Article
Chemistry, Physical
De-Wen Sun, Cong-Cong Long, Jian-Hua Huang
Summary: To improve the utilization efficiency of noble metals as co-catalysts, Pt atoms are dispersed on S-doped g-C3N4 nanotubes through in situ pyrolysis of H2PtCl6. The Pt atoms are anchored by coordination with diatomic N and S of g-C3N4, resulting in a high dispersion and stabilization. The optimized H2 production rate and turnover frequency are significantly higher compared to Pt nanoparticle loaded g-C3N4 nanotube. This work provides a new approach to anchor noble metal on photocatalyst and enhance atomic utilization efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Xianke Sun, Jian Li, Yujie Wang, Yan Zhang, Honglei Yuan
Summary: This study investigates the influence of heterojunction and in-situ growth on the photocatalytic activity. The results show that the g-C3N4/Bi2Sn2O7@PAN photocatalyst has more efficient light absorption, separation and migration of photogenerated charge carriers, and higher hydrogen production rate.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Irshad Ahmad, Shazia Shukrullah, Muhammad Yasin Naz, Faisal Khalid Alsaif, Sager Alsulamy, Yasin Khan, N. R. Khalid, Waheed Qamar Khan
Summary: The rational design of S-scheme heterojunctions is a promising strategy for improving the spatial separation of photocarriers and enhancing the stability of heterosystems. In this study, a 2D-1D ZnO-CeO2-Ag plasmonic heterosystem was successfully designed, which showed a significantly higher photocatalytic H2 evolution rate compared to pure ZnO and CeO2. The enhanced photocatalytic efficiency of ZnO-CeO2-Ag is attributed to the design of plasmonic S-scheme heterosystem, which promotes visible light absorption and facilitates the separation and transfer of photocarriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Physical
Fang -Yuan Bai, Jing-Ru Han, Jun Chen, Yue Yuan, Ke Wei, Yuan-Sheng Shen, Yi-Fu Huang, Heng Zhao, Jing Liu, Zhi-Yi Hu, Yu Li, Bao-Lian Su
Summary: Glucose conversion assisted photocatalytic water splitting technology, using a 3DOM CTO-ZCS composite, shows great potential for simultaneously producing H2 and high value-added chemicals. The substitution of Zn for Cd in the ZCS QDs improves the separation and transmission of photogenerated carriers, resulting in significantly enhanced H2 production performance. The photocatalytic mechanism reveals the selective conversion of glucose to gluconic acid, with a high selectivity of 85.65% on the 3DOM CTO-ZCS composite.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Rui Li, Qiongke Shi, Luyang Zuo, Yingjun Chen, Wenqiang Li, Huitao Fan, Bo Li, Liya Wang
Summary: The shortage of fossil energy has led to increasing concerns globally. Utilizing solar energy and transforming it into sustainable and clean energy is crucial. The development of hydrogen energy has emerged as a feasible solution to address the energy shortage issue. This paper presents a novel approach by directly assembling 2D ZnIn2S4 nanosheets on the surface of CoTiO3, resulting in a CoTiO3/ZnIn2S4 photocatalyst featuring a direct Z-scheme charge transfer channel. This enhances the separation rate of photogenerated carriers and accelerates the photocatalytic H2 evolution rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Ceramics
Qingyao Wang, Yuhua Zhao, Zifeng Zhang, Shengwen Liao, Yadan Deng, Xiang Wang, Qilu Ye, Kesheng Wang
Summary: Efficient TiO2 NTs/Sn3O4 photocatalysts were synthesized by hydrothermal deposition of Sn3O4 on TiO2 nanotube arrays, with the morphology and photocatalytic properties adjusted by changing the alkali used. The TiO2 NTs/Sn3O4 prepared with NaOH showed outstanding photoelectric conversion and photocatalytic remediation/H2 evolution properties. The photocatalysts could remove methylene blue dye and Cr(VI) under visible light, with center dot O2- /center dot OH radicals identified as the main active species for MB degradation. The high photocatalytic H2 evolution rate reached 6.49 mu mol cm-2 h-1. The outstanding activity and stability of TiO2 NTs/Sn3O4 photocatalysts make them attractive for wastewater treatment and energy generation.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Beenish Tahir, Muhammad Tahir, Wasif Farooq, Mohammad Siraj, Amanullah Fatehmulla
Summary: This study investigated the synthesis of well-designed three-dimensional nanotextures of graphitic carbon nitride (g-C3N4) mediated with nickel for solar hydrogen production. The results showed that the 3D hierarchical carbon nitride (HCN) nanotexture had a higher H2 yield compared to bulk g-C3N4. The enhanced photoactivity was attributed to the special interlayer opening, improved light penetration, and suppressed charge carrier recombination. Lower viscosity, higher proton concentration, and reduced diffusion effects were found to contribute to higher H2 production.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Zhiyun Long, Xiaohang Yang, Xuyang Huo, Xuanze Li, Qiuju Qi, Xingbo Bian, Qiyao Wang, Fengjian Yang, Weilun Yu, Lei Jiang
Summary: Inspired by natural photosynthesis, the Z-scheme heterojunction fabrication has been developed to enhance the photocatalytic H2 evolution performance of g-C3N4. The researchers in this study fabricated the Z-scheme In2O3 nanorod/C3N4 heterojunction and adjusted the length of the In2O3 nanorod to regulate the behavior of carriers. Through simulation and characterization, they clarified the mechanism of length-dependent regulation for photoelectric conversion efficiency. The optimal length (53 nm) of In2O3 nanorod was found to maximize the photoelectric conversion efficiency and achieve a 12.9-fold increase in the H2 evolution rate compared to pristine g-C3N4. This work provides a direct guideline for designing optimal geometrical configurations of g-C3N4 based heterojunctions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Qiaona Liu, Xin Han, An Qian, Ying Chen, Jichang Liu, Renjie Li, Xin Pu, Lei Ye, Xin Jia, Rongjie Wang, Jiangbing Li, Jigang Zhao, Hui Sun, Hao Ling
Summary: Inexpensive and earth-rich cocatalysts, such as the CoNi alloy, have shown promising potential in improving the photocatalytic hydrogen production performance. A novel CoNi-TiO2 photocatalyst was prepared by hydrothermal and chemical reduction methods, and its enhanced performance was attributed to the accelerated charge transfer and inhibited carrier recombination facilitated by the CoNi alloy. The hydrogen production rate of the CoNi-TiO2 photocatalyst was 24 times higher than that of pristine TiO2, reaching 6580.9 mmol g-1 h-1, comparable to 0.5 wt% Pt-TiO2. This study provides valuable insights for the design of efficient non-precious metal TiO2-based photocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Pinglong Cai, Jingyi Zhang, Yunni Liu, Wang Yao, Jun Lin
Summary: Fluorinated g-C3N4 nanosheets were synthesized by calcinating dicyandiamide and a facile hydrothermal method in the presence of HF. The fluorinated g-C3N4 exhibited higher photocatalytic H2 evolution compared to pristine g-C3N4 under visible light irradiation. The effects of fluorination on the structure, morphology, composition, band structure, photogenerated charge separation, and H2 evolution were investigated in detail. The introduction of surface-adsorbed F- species by fluorination effectively suppressed the recombination of photogenerated charges, resulting in enhanced H2 evolution over fluorinated g-C3N4.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Xiaohang Yang, Weilun Yu, Wensi Wang, Da Wang, Qiyao Wang, Xuyang Huo
Summary: By tuning the size of In2O3 nanocube, the surface property of g-C3N4-In2O3 heterojunction can be changed to enhance its photocatalytic H2 production. The optimal size of In2O3 nanocube can result in the highest photocatalytic H2 evolution rate and apparent quantum efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Difu Zhan, Jiayi Tian, Qian Fu, Peng Liu, Yahao Zhao, Wen Liu, Daqing Li, Yizhong Huang, Changcun Han
Summary: The hydrogen generated through photocatalytic technology is crucial for environmental resources and energy supply. In this study, Cu and Ni(OH)2 were used as modified co-catalysts to enhance the hydrogen evolution efficiency of the g-C3N4 photocatalyst. The dual-loaded photocatalyst exhibited lower carrier recombination rate, faster carrier transfer rate, and higher photocatalytic driving force.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiaohang Yang, Xingbo Bian, Weilun Yu, Qiyao Wang, Xuyang Huo, Shiyong Teng
Summary: Regulating surface wettability and doping heteroelements are effective strategies to enhance photocatalytic H2 evolution activity. This study presents a novel organosilica assisted method for synthesizing superhydrophilic oxygen-doped graphitic carbon nitride (O-CN). The presence of organosilica induces simultaneous grafting of oxygen-containing groups and oxygen doping within the carbon nitride substrate. The grafted oxygen-containing groups improve surface hydrophilicity and water adsorption, while the oxygen doping tailors the electronic structure and localized electron distribution, contributing to extended visible light harvesting and elevated photoelectric conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Jingkui Zhong, Peng Liu, Liwu Mo, Duyou Lu, Sanli Peng
Summary: Recycled magnesia was prepared by calcination of magnesium oxychloride cement-based waste at temperatures ranging from 600°C to 1000°C. The study investigated the effects of calcination temperature on the components, microstructures, and properties of recycled MgO, as well as its influence on the performance of MOC containing the recycled MgO. The results showed that the reactivity and content of active MgO in the recycled material were dependent on the calcination conditions, with the highest content achieved at 700°C-900°C. MOC paste prepared using MgO recycled at 800°C exhibited improved mechanical performance, denser microstructure, and more stable volume.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Jie Ren, Yuan Yu, Yanning Qu, Dongfeng Sun, Wenhui Chu, Qingmei Su, Linyin Huang, Bingshe Xu
Summary: A new dual Z-scheme MoO3/ZnIn2S4/black phosphorus quantum dots heterojunction (MZBP) was constructed for photocatalytic hydrogen evolution. The H2 generation efficiency of MZBP reached 5.45 mmol/g/h under visible light, which was 10 and 1.6 times higher than pure ZnIn2S4 and MoO3/ZnIn2S4 (MZ) material, respectively. The high-efficiency H2 evolution performance and significant dual Z-scheme mechanism make the MZBP heterojunction promising for applications in photoelectric fields.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Teng Li, Zhiliang Jin
Summary: The introduction of highly dispersed Ni2P derived from MOFs is an effective way to reduce the recombination rate of photogenerated electron-holes and enhance photocatalytic hydrogen production activity. Adjusting the ratio between Ni-MOF-74/Ni2P and MoSx can lead to the best hydrogen production activity of the composite catalyst 10%-NPMS.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Zhiliang Jin, Teng Li, Lijun Zhang, Xuanpu Wang, Guorong Wang, Xuqiang Hao
Summary: Graphdiyne (GDY), as a new two-dimensional carbon hybrid material, has garnered attention for its good conductivity, adjustable electronic structure, and unique electron transfer enhancement properties, showing great potential in the field of photocatalytic hydrogen evolution by water splitting. This study successfully prepared GDY using the cross-coupling method and obtained 0.05CIGCS-R with excellent photocatalytic performance through morphology modulation. The photocatalytic hydrogen evolution rates of 0.05CIGCS-R were significantly higher than those of pure GDY and CdS-R, showcasing the promising application of GDY in photocatalysis and the construction of a tandem S-scheme heterojunction.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Zhiliang Jin, Teng Li, Kai Wang, Xin Guo
Summary: Simple high-temperature calcination and hydrothermal methods were used to synthesize CeO2 and Mo-S. The hybrid catalyst 10%-CeO2/Mo-S exhibited the best photocatalytic hydrogen evolution activity, attributed to the Mo-O bonds promoting electron migration between the catalyst interfaces. The synergistic effect of S-scheme heterojunctions and Mo-O bonds accelerated the separation and migration of photo-induced carriers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Xuanpu Wang, Youji Li, Teng Li, Zhiliang Jin
Summary: This research demonstrates the excellent photocatalytic hydrogen evolution capability of a composite bimetallic sulfide ZnCo2S4 and CdS. The synergistic effect of zinc ions and cobalt ions enriches the redox-active sites, improving the hydrogen production efficiency of the catalyst. The experimental results show that the hydrogen evolution amount of the composite catalyst is 10 times that of single CdS, and the catalyst exhibits good stability. The apparent quantum efficiency of the composite catalyst with the best hydrogen evolution activity reaches 17.96%. This work provides a feasible method for expanding the application of CdS in the field of photocatalytic hydrogen evolution.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Teng Li, Youji Li, Zhiliang Jin
Summary: This study developed a new strategy for catalyst synthesis by forming a stable bonding state on the catalyst surface through a one-step oxidation-phosphorus doping strategy. This bonding state effectively inhibits the recombination of photogenerated carriers and enhances the migration rate of photogenerated electrons, accelerating the process of photocatalytic hydrogen evolution. The research provides new insights and effective strategies for catalyst surface design and the development of photocatalytic hydrogen evolution.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Teng Li, Lijun Zhang, Youji Li, Xudong Jiang, Zhiliang Jin
Summary: This study demonstrates the creation of surface bonding states on NiCo-LDH nanoflowers through a one-step oxidation-phosphorus doping strategy. It is found that these bonding states can significantly enhance the photocatalytic activity and stability of NiCo2O4.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Teng Li, Zhiliang Jin
Summary: The formation of interfacial S-scheme heterojunctions between y-GY containing alkyne bonds and CuMoO4 improves the separation efficiency of photogenerated carriers and enhances the photoreduction ability of composite catalysts. In situ radiation XPS spectroscopy and Density Functional Theory (DFT) were used to determine the heterojunction type and electron migration path, providing a basis for the structural optimization of y-GY based on in situ and theoretical calculations. This work expands the application of mechanical preparation of y-GY in photocatalysis.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Zhiliang Jin, Xiaohong Li, Teng Li, Youji Li
Summary: Graphdiyne was successfully synthesized and used to prepare the GDY/CuI/MIL-53(Al) S-scheme heterojunction for photocatalytic hydrogen production from water. The final hydrogen evolution rate was significantly higher than that of MIL-53(Al) after optimization of experimental conditions. The mechanism of charge transfer was also demonstrated.
Article
Materials Science, Multidisciplinary
Xuanpu Wang, Teng Li, Xiangyi Wang, Zhiliang Jin
Summary: By combining a new preparation method of graphdiyne (GDY) with g-C3N4, a conjugated structure photocatalyst was constructed. The electron-donating effect of the amino group effectively promoted the separation rate of photogenerated electrons and holes in g-C3N4. The charge delocalization effect between GDY and g-C3N4 accelerated the surface migration rate of the photogenerated electrons. This work provides ideas for the design of photocatalyst systems and the application of carbon materials in photocatalysis.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Xingchao Dai, Teng Li, Bin Wang, Carsten Kreyenschulte, Stephan Bartling, Shujuan Liu, Dongcheng He, Hangkong Yuan, Angelika Brueckner, Feng Shi, Jabor Rabeah, Xinjiang Cui
Summary: Heterogeneously catalyzed N-formylation of amines to formamide with CO2/H2 is efficiently achieved using mixed valence catalysts containing Cu2O/Cu interface sites, which play a vital role in the excellent catalytic activity by assisting in the formation of O-inter-H moieties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Zhiliang Jin, Xuanpu Wang, Youlin Wu, Teng Li
Summary: In this study, a GDY/CuMoO4 (CMO)/CuO tandem S-scheme heterojunction was constructed using the cross-coupling method. The GDY was easily collected with the help of CuI as a coupling catalyst and precursor for more active composite catalysts. The highly conjugated system and excellent electrical conductivity of 2D GDY provided a unique system with strong charge distribution and transport, resulting in stronger reducing activity and carrier transfer capability in the constructed S-scheme heterojunctions. The intrinsic charge transfer mechanism of the catalyst was investigated, and a proposed mechanism for the photocatalytic hydrogen production reaction was proposed.
Article
Green & Sustainable Science & Technology
Youlin Wu, Teng Li, Zhiliang Jin
Summary: With the introduction of an appropriate amount of Ti3C2 MXene by hydrothermal method, the electrochemical performance of NiAl-LDH can be improved. NiAl-LDH@Ti3C2 is simply compounded with ZnCdS to obtain ZnCdS/NiAl-LDH@Ti3C2. The optimal ratio of hydrogen evolution activity is 27.10 mmol g(-1) h(-1) under alkaline solution, which is significantly higher than ZCS and ZnCdS/NiAl-LDH-20, while ZnCdS/NiAl-LDH@Ti3C2-20 is 1883 mu mol (37.66 mmol g(-1) h(-1)) in acidic solution, which is much higher than ZnCdS and ZnCdS/NiAl-LDH-20. This improvement is mainly attributed to the doping of Ti3C2 in the NiAl-LDH preparation, which enhances the electrochemical properties of NiAl-LDH.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Cheng Yang, Xuanpu Wang, Teng Li, Youlin Wu, Zhiliang Jin
Summary: In this study, graphdiyne/CuO and NiMoO4/GDY/CuO composite catalysts were prepared by cross coupling and high-temperature annealing methods. The introduction of CuI played a dual role as a catalytic coupling agent and a precursor for CuO. The addition of CuO improved the charge separation and acted as an acceptor for unwanted holes. The good conductivity and reduction ability of graphdiyne played crucial roles in enhancing the performance of the composite catalyst. The study established a reasonable charge transfer mode for hydrogen evolution using graphdiyne as the active site, leading to improved separation efficiency of photogenerated carriers. This clean and efficient multicomponent system has promising applications in photocatalytic hydrogen production.
Article
Engineering, Environmental
Teng Li, Xuanpu Wang, Zhiliang Jin, Noritatsu Tsubaki
Summary: The unique properties and structure of graphdiyne provide new opportunities for innovation in the field of photocatalysis. This study used in-situ high-temperature calcination to induce the formation of Co-C chemical bonds at the interface between the catalyst, organic graphdiyne, and inorganic perovskite CoTiO3, forming an S-scheme heterojunction with strong coupling of chemical bonds. This heterojunction plays an active role in promoting the separation and migration of photo-induced carriers, extending the lifetime of photogenerated electrons, and enhancing the photo-reduction ability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zhiliang Jin, Teng Li, Yuanpeng Wang
Summary: The designing of an appropriate interface is crucial for improving the performance of photocatalysts. In this study, a core-shell structure of ceria (CeO2)-cerium hydrocarbonate (CeCO3OH) was synthesized using ribbon-like CeO2 as the precursor. Simultaneously, amorphous CoSx ultrafine nanoparticles were grown in-situ on the surface of the core-shell structure, forming an S-scheme heterojunction with an appropriate interface. The heterojunction effectively inhibits the recombination of photogenerated electron-hole pairs, leading to enhanced photocatalytic hydrogen evolution performance. The results demonstrate the indispensability of CeCO3OH in constructing the heterojunction. This work provides methods and guidance for constructing S-scheme heterojunctions composed of multivariate photocatalysts using an in-situ approach.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Haojie Li, Bingke Yang, Zhen Yao, Xuetao Wang, Kaiming Shen, Mengjie Liu
Summary: This study systematically investigates the influence of metal and nonmetal element doping on the photochemical properties of g-C3N4 for efficient catalytic AB hydrogen production. It provides a design method for high performance bifunctional catalysts of photocatalysis and metal catalysis. The results show that both non-metals (B, P) and metals (Ru, Ni) have efficient regulatory effects on the band structure of g-C3N4, resulting in a reduced band gap and improved hydrogen production. The study offers a theoretical method for the coupling of metal catalysis/photocatalysis ammonia borane to produce hydrogen.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Shrouq Mujahed, Davide Gandolfo, Luigi Vaccaro, Evgueni Kirillov, Dmitri Gelman
Summary: In this study, a high-valent Ru(IV) bifunctional catalyst was successfully applied for the hydrosilylation of various functional groups. The high-valent hydride complexes showed high chemoselectivity and affinity towards reducing polar bonds. The scope, limitations, and plausible mechanism of the reaction were described.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yongzhen Peng, Kongchen Xia, Qi Wu
Summary: In this study, we report an engineered cyclohexanone monooxygenase that can be used for the asymmetric synthesis of chiral alpha-deuterated carbonyl compounds via enantioselective reductive dehalogenation. The engineered enzyme exhibits good chemoselectivity, stereoselectivity, and d-incorporation, making it a promising method for the synthesis of deuterated drugs.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qi Yang, Ruixuan Xu, Hongqi Nie, Qilong Yan, Jun Liu, Jiuyu Chen, Yunlan Sun
Summary: The adsorption and decomposition processes of ammonium perchlorate (AP) on pure-Al and Al2O3/Al surfaces were investigated using density functional theory. The results showed that the pure-Al surface is more conducive to the decomposition of AP and the activation of NH3, while the Al2O3/Al surface promotes the disengagement of H and NH3 decomposition.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yudong Hu, Guochao Xu, Ye Ni
Summary: This study identified a novel phenylalanine dehydrogenase (QtPDH) with high catalytic efficiency and thermal stability, making it a promising biocatalyst for industrial production of bulky aromatic primary amines. QtPDH exhibited a broader substrate specificity and significantly longer half-life compared to BbPDH.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Weiling Zhao, Zhiling Huang, Hui Shen, Xianglong Li, Shaofen Zhao, Bo Xie, Shengjie Xia
Summary: This study investigated the effects of metal doping and crystal plane selection on the CO2 adsorption properties of MgO using density functional theory (DFT) methods. The results showed that the appropriate crystal plane and metal doping can improve the adsorption properties of MgO on CO2. The influence of different crystal planes and metal dopants on CO2 adsorption properties varied significantly. The research provides some references for experimental studies on CO2 adsorption by MgO by combining the dual modification of crystal plane and doped metal.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Jie Zhang, Jinwei Chen, Zongbo Shi, Junyu Zhao, Runsheng Zhuo, Ruilin Wang
Summary: In this study, a double-layered silicalite-1 support with high specific surface area was synthesized, and a magnesium modification strategy was adopted to improve the catalytic activity and stability of the zinc-based catalyst. The modified catalyst showed enhanced propylene selectivity and anti-coking property.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Pei-Sen Gao, Chang-Wang Pan, Cheng Liu, Wen -Tong Chen
Summary: Asymmetric electrocatalysis offers a unique approach to obtain enantioenriched molecules that are difficult to obtain through conventional methods. This study developed a novel bifunctional electrocatalyst, enabling the oxidative kinetic resolution of chiral 1,4-diols and gamma-lactones. The work demonstrates the potential of bifunctional electrocatalysis for asymmetric synthetic methods and its importance in the development of novel electrocatalytic methods.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qinzhe Lin, Xuanjin Lv, Xianming Zeng, Mengning Zhong, Qiyun Wu, Huilin Ren, Shenpeng Xu, Wentian Chen, Wenting Du, Jun Li
Summary: The catalytic efficiency of engineered IRED M5 was found to be relatively low when tasked with a bulky amine substrate. Rational design led to the mutants M203V and F260A, with F260A exhibiting a substantial improvement in conversion and stereoselectivity. The study revealed the potential molecular mechanisms underlying the effect of F260A and M203V on catalytic performance.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhishuai Wang, Fengyun Su, Hailong Cao, Mengzhen Tian, Xiang Li, Haiquan Xie, Xiaoli Jin, Zhengdao Li, Xin Ying Kong
Summary: In this study, the efficiency of photocatalytic CO2 reduction was significantly enhanced by incorporating nickel oxide onto niobium pentoxide. The resulting catalyst showed remarkable methane and carbon monoxide production improvements.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
A. Yu. Sidorenko, Yu. M. Kurban, T. V. Khalimonyuk, I. V. Il'ina, N. S. Li-Zhulanov, O. S. Patrusheva, V. V. Goltsova, M. P. Bei, Zh. V. Ihnatovich, J. Warna, K. P. Volcho, N. F. Salakhutdinov, D. Yu. Murzin, V. E. Agabekov
Summary: This study provides a comprehensive investigation into the catalytic condensation of renewable 3-carene with formaldehyde for the one-step preparation of terpenoid trans-4-hydroxymethyl-2-carene. Various acids and alumino-silicates were found to catalyze the reaction, but the selectivity to the desired product was limited. Phosphoric acid showed the highest selectivity, and an excess of formaldehyde or catalyst loading significantly increased the yield of the target product. Water presence also led to increased selectivity. Additionally, a detailed mechanism for the 3-carene condensation with formaldehyde was proposed and confirmed through kinetic modeling.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Meng-Yu Rong, Jing Nie, Shen Li, Jun-An Ma
Summary: We synthesized a new class of chiral quaternary ammonium salts and used them as catalysts in phase-transfer catalytic asymmetric alkylation. By employing these catalysts, we obtained a series of chiral fluorinated aromatic alpha-amino acid derivatives with high yields and enantioselectivities.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhaozhou Wei, Guangtao Wei, Huixian Che, Deyuan Xiong, Linye Zhang, Ruihua Xue, Yalin Tang, Xuanli Lu
Summary: This study demonstrates that small-sized graphite crystallite and highly defective carbon-based catalysts can increase the -SO3H density of the catalysts and modulate their surface electronic properties, leading to improved efficiency in the alpha-pinene hydration reaction. The reduction of graphite crystallite size is considered a critical step in enhancing the selectivity of alpha-terpineol.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Kempanna S. Kanakikodi, Nagendra Kulal, K. S. Subramanya, M. S. Puneethkumar, Bhavana B. Kulkarni, Ganapati Shanbhag, Sanjeev P. Maradur
Summary: An effective and highly selective protocol for synthesizing asymmetric organic carbonates using dimethyl carbonate (DMC) as a reactant and solvent has been developed. The performance of CeO2 nanostructures with different morphologies in the carbonate interchange reaction (CIR) of alcohols was investigated, and the CeO2 nano-catalyst with rod morphology exhibited the highest oxygen vacancy and remarkable enhancement in conversion. The CeO2 characterization data revealed that the exposed active sites, defect density, coordination state of surface atoms, and reducibility of the catalytic materials are the contributing factors to its high catalytic activity. CeO2 can be easily recovered and reused for multiple cycles.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yanzhao Gao, Xianglei Meng, Shiqi Huang, Hui Wu, Liantao Jiang, Yu Zhou, Yuting Song, Yanyan Diao
Summary: Gamma alumina modified with alkaline earth metal shows improved catalytic performance for hydrogenation reactions. Pd catalysts supported by Al2O3 and Mg-modified Al2O3 were synthesized and their structure, composition, and surface acidity were investigated. The results showed that Pd/MgO-Al2O3-2 catalyst exhibited the best catalytic performance due to its metallic state palladium and weak acid sites.
MOLECULAR CATALYSIS
(2024)
