Article
Engineering, Environmental
Sihyeon Jo, Hyejin Kim, Kyoung Eun Lee, Sukhwa Hong, Kangwoo Cho, Sanghoon Kim, Gun-hee Moon, Jonghun Lim
Summary: The selective control of reactive oxygen species (ROS) is crucial in abating aquatic organic pollutants in advanced oxidation processes (AOPs). Copper phosphide (CuxP) exhibits a Janus-like behavior, serving as a solid oxidative reagent under acidic and dark conditions and as a photosensitizer under neutral and light conditions. This dual nature of CuxP allows for the selective production of ROS and offers new possibilities for water treatment and the development of efficient AOP systems.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Lingwei Gao, Yang Guo, Juhong Zhan, Gang Yu, Yujue Wang
Summary: This study evaluated the effects of various quenchers on the mechanism of a cobalt mediated peroxymonosulfate (Co(II)/PMS) process and found that these quenchers not only quench target reactive species but also cause interference effects. Therefore, caution should be exercised when applying the quenching method to investigate the mechanism of the persulfate-based process.
Article
Engineering, Environmental
Qian Li, Jingjing Zhao, Huan Shang, Zhong Ma, Haiyan Cao, Yue Zhou, Guisheng Li, Dieqing Zhang, Hexing Li
Summary: Based on porphyrin-coupled titanium dioxide, a bionic photocatalytic system was designed for efficient removal of low-concentration indoor NOx gas. This system achieved high removal efficiency and long stability, and the synergistic effect between singlet oxygen and mobile hydroxyl radicals was found to be crucial for the removal process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yanni Jiang, Zhongjuan Wang, Jianbo Huang, Feng Yan, Ye Du, Chuanshu He, Yang Liu, Gang Yao, Bo Lai
Summary: This study developed an O-1(2)-dominated process for bacterial inactivation through visible light photocatalysis assisted by PMS. A novel CuS-modified MIL-101(Fe) photocatalyst was synthesized, which enhanced the photocatalytic performance. The results showed that O-1(2) attacked bacterial cell membranes and increased intracellular ROS levels, leading to irreversible cell death. Additionally, the developed system efficiently inactivated other bacteria in practical wastewater.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yelim Kim, Hongshin Lee, Hoon Oh, Zeeshan Haider, Jaemin Choi, Yong-Uk Shin, Hyoung-il Kim, Jaesang Lee
Summary: This study reexamined the mechanisms of oxidative organic degradation by the binary mixture of periodate and H2O2 (PI/H2O2). The findings showed that PI/H2O2 predominantly decomposes organics by ·OH at pH < 5, contradicting previous claims. The study also revealed a potential switch in the major oxidant under varying pH conditions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jaemin Choi, Hak-Hyeon Kim, Ki-Myeong Lee, Na Chen, Min Sik Kim, Jiwon Seo, Donghyun Lee, Haein Cho, Hyoung-il Kim, Jaesang Lee, Hongshin Lee, Changha Lee
Summary: The generation of hydroxyl radicals by visible light-illuminated tungsten oxide is significantly improved in the presence of hydrogen peroxide and bicarbonate ion. The ternary system shows synergistic enhancement in benzoic acid oxidation, with less consumption of hydrogen peroxide compared to the binary system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Mai Mersal, Gehad G. Mohamed, Abdallah F. Zedan
Summary: Alcohol oxidation is an important chemical reaction of interest in energy and industrial sectors. In this study, n-TiO2@WO3 heterojunction photocatalysts were prepared and their catalytic activity towards methanol oxidation under visible-light was investigated. The hybrid photocatalyst showed enhanced activity compared to pure counterparts.
Article
Engineering, Environmental
Xuguang Li, Le Wang, Yanxiu Guo, Wen Song, Yanfei Li, Liangguo Yan
Summary: MoS2-based materials have shown potential as PMS activators for tetracycline removal. The goethite-MoS2 hybrids (G-MoS2) exhibited higher degradation rate than pure MoS2. The study also revealed that (OH)-O-center dot played a significant role in TC removal in the 0.1G-MoS2/PMS system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Zhiyuan Feng, Qingling Tian, Qianqian Yang, Yanbo Zhou, Hongying Zhao, Guohua Zhao
Summary: This study demonstrates the efficient treatment of coal water slurry gasification wastewater using a CuCN/photoelectrochemical system, reducing TOC levels with low energy consumption. The treated wastewater can be utilized for salt recovery and utilization, highlighting the potential of synergistic photo-electro-catalytic effects in wastewater remediation processes, especially for saline coal wastewater.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yi Zhou, Qionghua Li, Jin Zhang, Minghui Xiang, Yinghong Zhou, Zhiyue Chen, Yongbo Chen, Tiantian Yao
Summary: This study demonstrates the importance of the synergy between singlet oxygen and free radicals in driving the degradation of organic pollutants in water. The YBiO2_ x photocatalyst, prepared through a hydrothermal method with yttrium doping, is found to produce oxygen vacancies and possess up-conversion property. Superoxide radicals, singlet oxygen, hydroxyl radicals, and holes play crucial roles in the photocatalytic reaction process. The study also reveals that the degradation efficiency of tetracycline can be maintained in the presence of various anions and humic acid in wastewater, thanks to the synergy between singlet oxygen and free radicals.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mao Cai, Kaini Xu, Haoyuan Jia, Long Zhang, Xueling Mi, Sanzhong Luo
Summary: Highly effective and stereoselective enamine-singletoxygen coupling was achieved by synergistic chiral primary amine and photocatalysis in hexafluoroisopropanol. The current enamine catalysis enables alpha-hydroxylation of beta-ketocarbonyls with good yields and high enantioselectivity across a broad range of substrates. Mechanistic studies revealed a direct participation of solvents in the critical enamine coupling step, and a solvent-O-1(2) H-bonding mode was invoked to account for the dramatic solvent effect.
Review
Chemistry, Physical
Marcin Janczarek, Ewa Kowalska
Summary: This review explored the preparation, characterization, mechanisms, and activity testing of defective titania, suggesting that self-doped TiO2 could be a more cost-effective photocatalytic material. However, there are still uncertain research findings and unanswered questions that require further investigation and verification.
Article
Chemistry, Applied
Shubin Yang, Bunsho Ohtani
Summary: In this study, a Rh-TiO2 composite material was prepared by oxidizing Rh(III) species to Rh(IV) in an aqueous solution, which showed enhanced photocatalytic activity. XPS analysis confirmed the presence of Rh(IV) species in the composite, and the effect of Rh/Ti molar ratio on the photocatalytic activity was studied, demonstrating that Rh doping improved the visible-light absorption and overall performance of the composite.
Article
Engineering, Environmental
Yiyang Liu, Xuejiang Wang, Qiunan Sun, Liuyu Chen, Meng Yuan, Zhenhua Sun, Yanan Zhang, Siqing Xia, Jianfu Zhao
Summary: Transition metal-based photocatalysts are highly effective in the activation of Peroxymonosulfate (PMS). In this study, a novel floating catalyst Cu0-MoS2/C3N4-expanded graphite (CuMSCN-EG) was prepared and applied for the removal of tetracyclines (TCs) and inactivation of Escherichia coli under visible light irradiation. The loading of zero-valent copper in the CuMSCN-EG system significantly increased the reaction rate and the generation of reactive species, leading to high efficiency and durability in contaminants degradation and pathogen inactivation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xinyu Wang, Wangwang Tang, Longbo Jiang, Jing Feng, Jinjuan Yang, Shaoyu Zhou, Wenqin Li, Xingzhong Yuan, Hui Wang, Jiajia Wang, Yuanqing Bu
Summary: This study proposes a novel and efficient photocatalytic activation strategy using crystalline carbon nitride (CCN) and visible light (Vis) to activate PI for pollutant degradation. The CCN/PI/Vis system achieved 100% degradation of ciprofloxacin hydrochloride (CIP) within 10 minutes, which was much higher than the polymerized carbon nitride (PCN)/PI/Vis system. The CCN/PI/Vis system demonstrated outstanding CIP removal activity in various conditions, including different pH levels, anions, organic matter, and natural water environments.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Mate Nafradi, Tuende Alapi, Luca Farkas, Gabor Bencsik, Gabor Kozma, Klara Hernadi
Summary: This study compares the efficiency of commercially available photocatalysts, TiO2 and ZnO, in the removal of antibiotics under specific wavelength irradiation. The formation rate of (OH)-O-center dot and the contribution of photogenerated electrons to conversion were compared. The results show that TiO2 has higher efficiency in the removal of antibiotics, while ZnO performs better in certain cases.
Article
Polymer Science
Erika Nascimben Santos, Akos Fazekas, Cecilia Hodur, Zsuzsanna Laszlo, Sandor Beszedes, Daniele Scheres Firak, Tamas Gyulavari, Klara Hernadi, Gangasalam Arthanareeswaran, Gabor Vereb
Summary: This study utilized a central composite design to analyze how different fabrication conditions affect the pure water flux, pore size, and photocatalytic activity of polyvinylidene fluoride (PVDF) membranes. The results indicated that the concentration of PVDF and the use of polyvinylpyrrolidone (PVP) significantly influenced the performance of the membranes.
Article
Materials Science, Ceramics
Zsejke-Reka Toth, Alexandra Feraru, Diana Debreczeni, Milica Todea, Radu A. A. Popescu, Tamas Gyulavari, Alina Sesarman, Giorgiana Negrea, Dan C. C. Vodnar, Klara Hernadi, Zsolt Pap, Lucian Baia, Klara Magyari
Summary: The study investigates the influence of transformations of silver species in the human body on bioactivity and antibacterial activity. The results show that the high concentration of NaCl in the simulated body fluid leads to the formation of silver nanoparticles. The presence of Ag+ ions facilitates the transformation of silver compounds through the formation of AgCl crystals on the surface.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Applied
Nikita Sharma, Kata Saszet, Tamas Szabo, Daniel Karajz, Imre Miklos Szilagyi, Seema Garg, Zsolt Pap, Klara Hernadi
Summary: The use of plant extracts in photocatalysis for the removal of phenol under visible light has been explored. The plant extracts act as structural and shape-tailoring agents, leading to improved performance of the bismuth oxyhalides. BiOI with Azadirachta indica and BiOBr with Camellia sinensis extract show high phenol removal efficiency. The role of organics from the plant extracts and their correlation with the structural and optical properties are discussed.
Article
Chemistry, Physical
Gabor Vereb, Tamas Gyulavari, Orsolya Virag, Tunde Alapi, Klara Hernadi, Zsolt Pap
Summary: This study compared the photocatalytic performances of doped and non-doped TiO2 photocatalysts under solar and various types of artificial irradiation. The results showed that the non-doped TiO2 had higher photocatalytic efficiency than the highly visible-light-active TiO2 under natural solar irradiation. Further experiments revealed a lower photocatalytic efficiency in the visible range, even for the most visible-light-active TiO2.
Article
Chemistry, Physical
Elias Jigar Sisay, Szabolcs Kertesz, Akos Fazekas, Zoltan Jakoi, Endre Zsolt Kedves, Tamas Gyulavari, Aron Agoston, Gabor Vereb, Zsuzsanna Laszlo
Summary: This study explored the performance of composite photocatalytic membranes made from multiple nanoparticles (TiO2, carbon nanotubes, BiVO4) and polyvinylidene fluoride. These membranes exhibited excellent resistance to fouling, low filtration resistance, high flux, and good flux recovery ratio compared to the pristine membrane. Salinity, pH, and lactose concentration were found to be key factors affecting filtration resistance and rejection performance during the ultrafiltration of dairy wastewater. Lactose in the wastewater increased irreversible resistance and significantly reduced COD rejection during ultrafiltration. Regeneration of fouled photocatalytic membranes was achieved through visible light irradiation, with the membrane containing all constituents showing the best regeneration performance, surpassing the pristine membrane by 30%.
Article
Chemistry, Multidisciplinary
Mohammed Alktranee, Mohammed Ahmed Shehab, Zoltan Nemeth, Peter Bencs, Klara Hernadi
Summary: This study investigates the use of a novel TiO2-CuO hybrid nanofluid to reduce the temperature of PV cells, thus improving the energy and efficiency of PVT systems. The experiment shows that the hybrid nanofluid can reduce the temperature of the PV module by 39% and improve the electrical power and overall efficiency by 77.5% and 58.2% respectively, at a concentration of 0.3 vol%. The study also demonstrates the positive effects of the hybrid nanofluid cooling on the system's entropy generation and economic analysis.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Viktoria Marta, Zsolt Pap, Eniko Bardos, Tamas Gyulavari, Gabor Vereb, Klara Hernadi
Summary: Bismuth oxybromides with varying urea amounts were synthesized through a solvothermal method. The influence of urea ratio on the morpho-structural properties and photocatalytic activity of the samples was investigated. Characterization techniques such as X-ray diffraction, diffuse reflectance spectroscopy, infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, and surface tension measurements were employed. The urea ratio had a significant effect on the morphology, particle size distribution, and photoactivity of the samples, but a limited effect on the crystalline composition, primary crystallite size, and band gap of bismuth oxybromides. The formation of Bi-based complexes and degraded urea-based products were found to influence the band gap energies and, consequently, the photoactivity. Samples prepared at low urea ratios exhibited the highest degradation efficiency for both rhodamine B and ibuprofen under both UV and visible light irradiations.
Article
Materials Science, Multidisciplinary
Dhiyaa A. Hussein Al-Timimi, Qusay F. Alsalhy, Adnan A. AbdulRazak, Mohammed Ahmed Shehab, Zoltan Nemeth, Klara Hernadi
Summary: This study aims to optimize operating parameters of mixed matrix membranes (MMMs) fabricated from polyethersulfone (PES) and silica nanoparticles (SiO2 NPs) or modified silica NPs with polyethylenimine (PEI) (SiO2-g-PEI NPs) for pharmaceutical wastewater treatment. The results showed that SiO2 MMMs had a permeate flux of 38.27 LMH and 81.26% MBV rejection, while SiO2-g-PEI MMMs had a permeate flux of 104.11 LMH and 99.00% MBV rejection. The optimal parameters for SiO2 MMMs were SiO2 wt % of 0.8447%, MBV concentration of 98.18 ppm, and pH of 4, while the optimal parameters for SiO2-g-PEI MMMs were SiO2-g-PEI wt% of 0.93%, MBV concentration of 22.7 ppm, and pH of 4.79.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biochemistry & Molecular Biology
Laura Fekete, Akos Ferenc Fazekas, Cecilia Hodur, Zsuzsanna Laszlo, Aron Agoston, Laszlo Janovak, Tamas Gyulavari, Zsolt Pap, Klara Hernadi, Gabor Vereb
Summary: Membrane filtration is an effective technique for separating micro- and nano-sized oil droplets from oil-contaminated waters. The flux reduction is a challenge for its extensive application, thus the development of antifouling membranes is necessary. The modification of PVDF membranes with TiO2/CNT nanocomposites (2% CNT) showed the highest reduction in filtration resistance and the highest fluxes compared to unmodified membranes, resulting in improved flux recovery ratio and purification efficiency.
Article
Biochemistry & Molecular Biology
Raghad M. Al-Maliki, Qusay F. Alsalhy, Sama Al-Jubouri, Adnan A. AbdulRazak, Mohammed Ahmed Shehab, Zoltan Nemeth, Klara Hernadi, Hasan Sh. Majdi
Summary: In this study, tungsten oxide and graphene oxide (GO-WO2.89) were combined using the ultra-sonication method and embedded with polyphenylsulfone (PPSU) to prepare low-fouling membranes for ultrafiltration. The modified PPSU membrane with 0.1 wt.% GO-WO2.89 exhibited the best characteristics, including a contact angle of 40.82 degrees and a porosity of 92.94%. It also had the highest permeation flux and BSA rejection rate. Additionally, the GO-WO2.89 composite showed positive antibacterial performance at different concentrations.
Article
Chemistry, Physical
Mahitha Udayakumar, Nikita Sharma, Klara Hernadi, Matjaz Finsgar, Blaz Likozar, Kocserha Istvan, Mate Lesko, Daniel Attila Karajz, Imre Miklos Szilagyi, Zoltan Nemeth
Summary: Multicomponent nanocomposites of bismuth oxychloride (BiOCl) with porous carbon foam (CF) derived from waste polyurethane (PU) elastomers were prepared by a simple hydrothermal method and their photocatalytic performance was investigated. The composites exhibited excellent photocatalytic activity for the degradation of methylene blue (MB) under UV-A irradiation, with a high overall removal efficiency of 99.0% in 100 min of irradiation. The enhanced activity of the composites was attributed to the well-connected heterojunction interface, improved hydrophilicity, more reactive sites, and effective separation of photogenerated charges.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Energy & Fuels
Mohammed Alktranee, Mohammed Ahmed Shehab, Zoltan Nemeth, Peter Bencs, Klara Hernadi
Summary: Recently, the use of nanofluids as coolants for photovoltaic modules has gained attention due to the ability to enhance the performance of the modules. This study investigates the use of zirconium oxide nanofluid at different volume concentrations as a coolant for reducing the temperature of photovoltaic cells. The results show that using zirconium oxide nanofluid at a volume concentration of 0.0275% in deionized water effectively reduces the temperature of the PV module and improves system energy and exergy efficiency.
Article
Multidisciplinary Sciences
Kadhum M. Shabeeb, Wallaa A. Noori, Ali A. Abdulridha, Hasan Sh Majdi, Mohammad N. Al-Baiati, Ali A. Yahya, Khalid T. Rashid, Zoltan Nemeth, Klara Hernadi, Qusay F. Alsalhy
Summary: A newly developed water-soluble polymeric nano-additive called PCLNPG has been used as a pore former to modify a polyethersulfone ultrafiltration membrane for dye removal. The study found that the content of PCLNPG in the membrane affected its surface characteristics, morphological structure, and overall performance. Increasing the PCLNPG content improved the hydrophilicity and porosity of the membrane. Additionally, the increased porosity of the membrane was the main reason for the reduced contact angle. The prepared membrane with 3% PCLNPG showed significantly improved water flux and dye rejection, making it a potential option for treating textile wastewater.
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
