Article
Chemistry, Applied
A. Zhukova, S. G. Chuklina, S. A. Maslenkova
Summary: In this study, the influence of the composition and synthesis conditions of Cu-modified (Zr+Ce)O-2-Al2O3 systems on their catalytic properties in ethanol conversion was investigated. It was found that the structure of the Al-Zr mixed oxide support plays a crucial role in forming Cu active sites for ethanol dehydrogenation to acetaldehyde.
Article
Energy & Fuels
Mingqiang Chen, Guowei Sun, Yishuang Wang, Defang Liang, Chang Li, Jun Wang, Quan Liu
Summary: The study focuses on improving the catalytic performance of methanol steam reforming (MSR) by supporting Cu-Zr components on AZ, which enhances the catalytic activity and promotes efficient hydrogen production.
Article
Materials Science, Ceramics
Christian Bechteler, Richard I. Todd
Summary: It has been found through experiments that electrochemical reduction occurs during flash sintering of YSZ, leading to the formation and disappearance of new phases. YSZ flash sintered in the absence of oxygen exhibits high electrical conductivity and forms a rocksalt structure Zr(O,N) with a metallic lustre. These findings are of great significance for understanding and applying flash sintering.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Energy & Fuels
Xu Dong, Zhengyu Wu, Yakun Guo, Yindong Tong, Xianhua Liu, Lihong Zhang, Yiren Lu
Summary: In this study, novel Cu@h-WO3/WO3·nH2O hierarchical microsphere composites were synthesized using a self-assembly method, showing enhanced photochromism and self-bleaching performance. Proper Cu content promoted carrier separation and prevented recombination of electron-hole pairs, improving efficiency in solar energy devices. Combining WO3 hybrids with Cu provided unobstructed channels and proton sources, showing potential for applications in solar energy devices.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Biochemistry & Molecular Biology
Steven van Terwingen, Ruimin Wang, Ulli Englert
Summary: The ditopic molecule HacacMePz combines two different Lewis basic sites and forms a crystalline adduct with TFDIB, showing additional short contacts.
Article
Engineering, Environmental
Guangming Jiang, Min Peng, Lin Hu, Jiayi Ouyang, Xiaoshu Lv, Zhehan Yang, Xinyuan Liang, Yuan Liu, Hong Liu
Summary: Electrocatalytic nitrate reduction is an important method for nutrient recycling and complete nitrogen elimination. The in-situ electroreduction of CuAl-mixed oxide can stabilize Cu delta+ and achieve good performance in electrocatalytic nitrate reduction. Furthermore, coupling ENRR with a breakpoint chlorination reaction enables complete conversion of nitrate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Jewel Kumer Saha, Arqum Ali, Ravindra Naik Bukke, Youn Goo Kim, Md Mobaidul Islam, Jin Jang
Summary: The study investigates the effect of fluorine doping on zinc oxide thin-film transistors, showing that F doping can reduce oxygen-related defects, improve mobility, and enhance stability, leading to superior performance of F-doped ZnO TFTs.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Physical
Jose D. Castro, Maria J. Lima, Isabel Carvalho, Mariana Henriques, S. Carvalho
Summary: Zirconium oxynitride (Zr(O)N) and Copper-Zirconium oxynitrides (Cu-Zr(O)N) were deposited on stainless steel substrates using DC reactive magnetron sputtering, with different oxygen contents achieved through a duty cycle controller. Chemical activation of the samples resulted in the antibacterial effect of CuZrON-DC100, where Cu reacted with O2- ions forming CuO. The multifunctionality of Cu-Zr (O)N coatings, combining aesthetic surface and antibacterial properties, was demonstrated.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Junjing Duan, Zhangyi Huang, Xunxiang Hu, Haomin Wang, Yutong Zhang, Yao Yang, Esra Y. Mertsoy, Di Wu, Jianqi Qi, Tiecheng Lu
Summary: This study investigates the microstructural and helium bubble evolution of Gd2Zr2O7 immobilized with trialkyl phosphide (TRPO waste) in an experimentally feasible time frame. Interestingly, large spherical helium bubbles with diameters ranging from 5 to 25 nm and a severely amorphous structure are observed below the He-irradiated surface. The enhanced migration rate of vacancies and the suppression of vacancy and interstitial atom recombination-annihilation may contribute to this novel phenomenon.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Rakesh Puttreddy, J. Mikko Rautiainen, Shilin Yu, Kari Rissanen
Summary: The N-X...O--N+ halogen-bonded systems formed by pyridine N-oxides (PyNOs) as halogen-bond acceptors and N-halosuccinimides, N-halophthalimides, and N-halosaccharins as donors are studied. A simple electrostatic model for predicting XB energies using only the properties of halogen donors and oxygen acceptors is developed. Data from in silico bond energies and single-crystal X-ray structures correlate, but data from solution do not.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Katarzyna Swirk, Ye Wang, Changwei Hu, Li Li, Patrick Da Costa, Gerard Delahay
Summary: ZrO2 catalysts promoted by copper and iron were prepared using one-pot synthesis with urea. Characterized by various methods, the Fe-Zr sample showed the most promising results in NH3-SCR, being active and highly selective to N-2, especially in the presence of SO2.
Article
Chemistry, Applied
Jaroslav Aubrecht, Oleg Kikhtyanin, Violetta Pospelova, Iva Paterova, David Kubicka, Federica Zaccheria, Nicola Scotti, Nicoletta Ravasio
Summary: According to green chemistry principles, the ester hydrogenolysis process needs a new environmentally-friendly catalyst design due to the unsustainability and environmental risks brought by the current Adkins CuCr2O3 catalyst. We investigated eight catalysts prepared using different methods and supports, and found that the synthesis method significantly affects the dispersion and activity of the resulting copper phase. The ZrO2-based catalysts prepared by chemisorption-hydrolysis showed higher activity and selectivity compared to the SiO2-based catalysts prepared by incipient wetness impregnation.
Article
Chemistry, Applied
Barbara C. Miranda Morales, Braulio Andres Ortega Quesada
Summary: The conversion of glycerol to hydroxyacetone was studied using various catalysts, with the monometallic Cu/γ-Al2O3 and Cu/TiO2 catalysts showing higher conversion and selectivity. Additionally, high selectivity to lactic acid was achieved over the Cu/TiO2 catalyst.
Article
Materials Science, Ceramics
Y. H. Su, P. P. Jing, Y. X. Li, D. L. Ma, F. Y. Yue, Y. X. Leng
Summary: Cu doping is used to improve the lubrication and fracture toughness of zirconia-toughened alumina (ZTA) in total hip arthroplasty. The study investigates the effect of Cu doping on the biocompatibility of ZTA ceramics. Cu doping reduces the stability of tetragonal zirconia, resulting in a phase transition and pore formation on the ZTA surface. Cu doping enhances the adhesion and viability of osteoblasts, but influences the morphology and pro-inflammatory response of macrophages.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Samantha Carter, Wenjie Tao, Rajat Majumder, Alexander Yu. Sokolov, Shiyu Zhang
Summary: We investigate the spin switching behavior of dicopperoxo nitrosyl [Cu-2(O)(NO)](2+) complexes at different temperatures and its influence on hydrogen atom transfer (HAT) reactivity. Our findings indicate that the HAT reaction is predominantly mediated by the S = 1/2 isomer of [Cu-2(O)(NO)](2+) complexes at low temperatures (198 K). Moreover, the introduction of functional groups that create an unsymmetric secondary coordination environment enhances the HAT rates by perturbing the spin equilibria. These findings suggest that metalloenzymes in natural proteins may employ similar strategies to control HAT reactions due to their often unsymmetric coordination environments.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Applied
Yaxin Yu, Wei Tan, Dongqi An, Changjin Tang, Weixin Zou, Chengyan Ge, Qing Tong, Fei Gao, Jingfang Sun, Lin Dong
Summary: A series of WO3 modified iron-titanate mixed metal oxides catalysts with optimized activity for high efficiency NO conversion over a wide temperature range have been synthesized. These catalysts show excellent stability in the presence of water and SO2, making them suitable for stationary source deNO(x) applications.
Article
Engineering, Environmental
Wei Tan, Shaohua Xie, Yandi Cai, Meiyu Wang, Shuohan Yu, Ke-Bin Low, Yuejin Li, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: This study explores the engineering of surface defects on CeO2 supports through ZrO2 doping to enhance the catalytic performance of Pt/CZO catalysts. Activation by H-2 reduction significantly boosts the catalytic oxidation performance of Pt/CZO catalyst and improves thermal stability, making it superior to Pt/CeO2 in vehicle emission control applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Mingxuan Li, Yandi Cai, Jinjin Zhang, Haixiao Sun, Zhi Li, Yujie Liu, Xin Zhang, Xiaoping Dai, Fei Gao, Weiyu Song
Summary: The study successfully enhanced the specific activity of ethanol oxidation reaction by synthesizing Pt3Ni nanowires with tailored structure, improving catalyst stability, and providing a promising pathway for the design and development of durable alloy nanocatalysts for direct ethanol fuel cell applications.
Article
Chemistry, Physical
Shuna Li, Yao Wang, Yunrui Li, Xu Fang, Yujie Liu, Mingxuan Li, Zhen Wang, Yufeng Gao, Haixiao Sun, Fei Gao, Xin Zhang, Xiaoping Dai
Summary: This study presents a simple method to synthesize e-PtNiCu NWs with high proportions of (110) and (100) facets, which exhibit remarkable performance in ethanol electrooxidation reaction. The improved performance of e-PtNiCu NWs is attributed to the synergistic catalytic effect between (110) and (100) facets. The thermodynamics and kinetic studies suggest that the synergistic effect of both facets can decrease the activation energy barrier and facilitate the charge transfer during the reaction.
Article
Chemistry, Physical
Shaohua Xie, Wei Tan, Yuejin Li, Lu Ma, Steven N. Ehrlich, Jiguang Deng, Peng Xu, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient NbCuCe oxide catalyst for reducing NOx emissions in cold-start diesel engines is reported. The catalyst exhibits higher DeNO(x) activity below 200 degrees C compared to the Cu-CHA zeolite catalyst, along with superior sulfur resistance, faster response, and lower NH3 slip. Atomically dispersed Cu species facilitate strong interaction between Cu and the Nb/Ce base catalyst, leading to improved low-temperature redox properties and NH3 adsorption/activation. The developed NbCuCe catalyst shows promising potential for efficient DeNO(x) in cold-start diesel engines and can be combined with Cu-CHA for a broader temperature range of operation.
Article
Chemistry, Physical
Shuna Li, Haixiao Sun, Jiaai Zhang, Longjiao Zheng, Yunrui Li, Xu Fang, Yujie Liu, Qi Song, Zhen Wang, Yufeng Gao, Xin Zhang, Xiaoping Dai, Yandi Cai, Fei Gao
Summary: Strengthening the oxide-metal interfacial synergistic interaction in nanocatalysts is an effective strategy to enhance the intrinsic activities and availability of active sites. In this study, SnO2/PtNi concave nanocubes enclosed by high-index facets were successfully fabricated and exhibited significantly improved catalytic performance for electrooxidation reactions. The strong interfacial interaction between SnO2 and PtNi not only reduces the activation energy barrier but also enhances the catalyst's CO-resistance and long-term stability.
Article
Chemistry, Physical
Zhonghui Cui, Song Song, Huibin Liu, Yingtian Zhang, Fei Gao, Tong Ding, Ye Tian, Xiaobin Fan, Xingang Li
Summary: By constructing dual-site copper catalysts with Cu+ single atoms and Cu nanoparticles, this study successfully enhances the water-gas shift reaction, increasing CO adsorption and catalytic activity, especially performing better at low temperatures.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Wei Tan, Shaohua Xie, Xin Wang, Juntian Xu, Yong Yan, Kaili Ma, Yandi Cai, Kailong Ye, Fei Gao, Lin Dong, Fudong Liu
Summary: In this study, an efficient CuO catalyst supported on a CeO2-Al2O3 support (CA-T) prepared by two-step incipient wetness impregnation (T-IWI) method was successfully developed. The Cu/CA-T catalyst exhibited better catalytic performance in CO oxidation and NO reduction by CO (NO + CO reaction) as well as higher thermal stability compared to the CuO catalyst loaded on conventional CeO2-Al2O3 support (Cu/CA). The microstructure of CuO-CeO2-Al2O3 catalysts, especially the state of Cu species, was systematically investigated using various characterization techniques. The mechanisms of CO oxidation and NO + CO reactions on Cu/CA and Cu/CA-T catalysts were collaboratively revealed.
Article
Chemistry, Applied
Yandi Cai, Peng Yang, Qinglong Liu, Kaili Ma, Wenxin Ma, Wang Song, Qiuhui Qian, Fei Gao, Wei Tan, Lin Dong
Summary: Sulfation treatment with different durations was performed on PrOx, and it was found that the catalytic performance of sulfated PrOx in the NH3-SCR of NO is highly dependent on the sulfation time. This study provides new insights into tuning the interaction between the PrOx surface and reactants (NO, NH3) via sulfation treatment, which can guide the design and application of PrOx-based catalysts for NH3-SCR of NO in the future.
JOURNAL OF RARE EARTHS
(2023)
Article
Multidisciplinary Sciences
Wei Tan, Shaohua Xie, Duy Le, Weijian Diao, Meiyu Wang, Ke-Bin Low, Dave Austin, Sampyo Hong, Fei Gao, Lin Dong, Lu Ma, Steven N. Ehrlich, Talat S. Rahman, Fudong Liu
Summary: Constructing single atom catalysts with fine-tuned coordination environments can lead to satisfactory catalytic performance. By controlling the calcination temperature, CeO2 supported Pt single atom catalysts with precisely controlled coordination environments were successfully synthesized. The different Pt-CeO2 coordination environments have an impact on reactant adsorption/activation and product desorption, thus resulting in different catalytic performance.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Lipeng Ding, Shaoxiong Zhang, Qinglong Liu, Peng Yang, Yandi Cai, Wei Tan, Wang Song, Fei Gao, Lin Dong
Summary: Catalysts for Nb/CeSi2 with different loadings of niobium were synthesized and evaluated for NH3-SCR performance over a broad temperature range. The 20Nb/CeSi2 catalyst exhibited the best low-temperature NH3-SCR performance while maintaining excellent SO2/H2O resistance. The addition of niobium resulted in variations in the surface structure, specific surface area, and acidity of the catalyst, which facilitated the SCR reaction. The interaction between niobium and ceria was found to enhance the activation of inert surface nitrate, contributing to the improvement of the catalyst performance at low temperature.
CHEMICAL PHYSICS IMPACT
(2023)
Article
Engineering, Environmental
Wei Tan, Shaohua Xie, Yandi Cai, Haowei Yu, Kailong Ye, Meiyu Wang, Weijian Diao, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: A highly efficient Pt single-atom catalyst was constructed for the catalytic oxidation of C3H8 by calcination of Pt catalysts on pre-stabilized Ce0.9Zr0.1O2 support. The Pt single atoms with different strengths of Pt-CeO2 interaction and coordination environment were successfully achieved by controlling the calcination temperatures. The Pt/CZO-750 catalyst exhibited higher C3H8 oxidation activity than Pt/CZO-550, attributed to the higher concentration of surface Ce3+ species/oxygen vacancies and stronger Pt-CeO2 interaction.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Wei Tan, Yandi Cai, Haowei Yu, Shaohua Xie, Meiyu Wang, Kailong Ye, Lu Ma, Steven N. Ehrlich, Fei Gao, Lin Dong, Fudong Liu
Summary: This study proposes a facile ZrO2 doping strategy to construct Pt-1/CexZr1-xO2 catalysts for eliminating harmful NH3 slip from stationary flue gas denitrification and diesel exhaust aftertreatment systems. The study finds that Pt/Ce0.9Zr0.1O2 catalyst exhibits the strongest Pt-CeO2 interaction and highest Pt-O-Ce coordination number, resulting in superior NH3 oxidation activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Peng Yang, Juntian Xu, Wei Tan, Qinglong Liu, Yandi Cai, Shaohua Xie, Song Hong, Fei Gao, Fudong Liu, Lin Dong
Summary: The catalytic oxidation performance of the Pt-1/CeO2 catalyst was greatly improved with the introduction of potassium species. Potassium ions acted as structural and electronic promoters, forming Pt-O-K interactions with Pt to directly regulate the coordination environment and electronic state of Pt, as well as the metal-support interaction between Pt and CeO2.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Fei Gao, Annai Liu, Wei Tan, Bing Hu, Ruihan Gong, Xing Cheng, Fudong Liu, Ge Chen, Lin Dong
Summary: A Ti3+-rich rutile TiO2 with a surface lattice expansion structure was prepared by H-2 treatment. The supported Pt single atoms on this surface were stabilized in a highly oxidized state and had a weaker affinity for CO, resulting in robust catalytic performance.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
