Article
Nanoscience & Nanotechnology
Mariam Barawi, Miguel Gomez-Mendoza, Freddy E. Oropeza, Giulio Gorni, Ignacio J. Villar-Garcia, Sixto Gimenez, Victor A. . de la Pena O'shea, Miguel Garcia-Tecedor
Summary: This study proposes a laser irradiation method to superficially degrade BiVO4 photoelectrodes and enhance their water oxidation reaction performance. Through a combination of advanced characterization techniques, it was found that the reduction process is localized at the surface of the sample, resulting in effective n-type doping and a shift to more favorable energy band positions for water oxidation. Additionally, changes in sample morphology and improved charge extraction contribute to an increase in photocurrent density.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Ch Venkata Reddy, I. Neelakanta Reddy, K. Ravindranadh, Bhargav Akkinepally, Fernando Alonso-Marroquin, Kakarla Raghava Reddy, Bai Cheolho, Jaesool Shim
Summary: This study successfully synthesized Au-doped BiVO4 nanostructured catalysts with different concentrations of Au ions to exhibit excellent electrochemical behavior and PEC properties. The optimal doped electrode showed lower resistance to charge transfer, significant enhancement in photocurrent density, and higher electrochemical capacitance attributed to increased surface area and suitable band gap. The proper incorporation of Au ions significantly improved the solar PEC water splitting and supercapacitor performance of the optimal doped electrodes.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Physical
Lan Wu, Meng Wang, Tianxiang Han, Bin Yang, Lei Geng, Jun Jin
Summary: A composite photoanode Fe2O3/BiVO4 with excellent photoelectric properties is reported in this study, which was prepared by a simple doping method using BiVO4 photoanode as substrate. The heterojunction formation between BiVO4 and Fe2O3 promotes carrier separation and transfer, effectively increasing carrier density. Simultaneously, the Fe2O3 layer provides photocorrosion protection for BiVO4, enhancing its photoelectric performance and stability. At 1.23 V vs. RHE, the photocurrent density of the composite photoanode was 1.3 mA cm-2, 3.25 times higher than that of the pure BiVO4 electrode, with a negative shift of 230 mV in the initial potential. Fe2O3/BiVO4 photoanode exhibits satisfactory photocurrent density, providing a feasible scheme for the preparation of new heterogeneous photoanodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Agustin O. Alvarez, Miguel Garcia-Tecedor, Laura Montanes, Elena Mas-Marza, Sixto Gimenez, Francisco Fabregat-Santiago
Summary: Impedance spectroscopy, intensity-modulated photocurrent spectroscopy, and intensity-modulated photovoltage spectroscopy are powerful modulated techniques for characterizing optoelectronic devices. This study combines these techniques to investigate the photogeneration, diffusion, and recombination processes in a zircon-doped bismuth vanadate photoanode for the first time. The results provide detailed quantitative information about the carriers and identify separation efficiency as the main limitation of the device.
Article
Chemistry, Physical
Muhammad Shafa, Iqbal Ahmad, Shahid Hussain, Muhammad Asif, Yi Pan, Rustem Zairov, Asma A. Alothman, Mohamed Ouladsmane, Zahid Ullah, Nabi Ullah, Chen Lai, Uzma Jabeen
Summary: A nanoalloy-based electrochemical sensor for H2O2 detection has been fabricated using chemical reduction methodology. The prepared samples were characterized by X-ray diffraction and scanning electron microscopy. Among all the compositions, Ag-Cu (9:1) nanoalloys showed the best performance in detecting H2O2.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Hao Wu, Songying Qu, Zhirun Xie, Yun Hau Ng
Summary: This study presents a simple alkaline solution treatment method to enhance the photoelectrochemical water oxidation performance of bismuth vanadate photoanodes. The treatment increases the surface ratio of bismuth to vanadium, resulting in the formation of a bismuth-rich surface and a homojunction within the material. The treated bismuth vanadate photoanode shows significantly improved charge separation efficiency and photon-to-current conversion efficiency.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Franky E. Bedoya-Lora, Isaac Holmes-Gentle, Anna Hankin
Summary: Photoelectrodes improve performance by enabling simultaneous light absorption and catalysis of water splitting reactions, which are evaluated using various electrochemical characterization methods. When using advanced techniques, it is important to avoid interpreting data using overly simplified models, and it is recommended to corroborate key parameter values using multiple techniques.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2021)
Article
Chemistry, Physical
Yucong Liao, Jianwei He, Lei Yi, Yayun Tang, Xiang Li, Ning Lv, Yuexin Xu, Hanyang Li, Yadong Wang
Summary: The study investigates the electrochemical mechanisms and kinetics of a polyimide anode material for lithium-ion batteries using electrochemical impedance spectroscopy (EIS), focusing on Ohmic impedance, solid-electrolyte-interphase impedance, and charge-transfer resistance as key parameters. Results show that charge-transfer and SEI resistances are crucial factors affecting the electrochemical performance of the polyimide anode material. Increasing temperature enhances the total electrochemical kinetics of the material, improving its performance at elevated temperatures.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Applied
Zhiming Zhou, Jinjin Chen, Qinlong Wang, Xingxing Jiang, Yan Shen
Summary: This study investigates the improvement of photoelectrochemical (PEC) activity of bismuth vanadate (BiVO4) photoanode by decorating its surface with cobalt sulfide (CoS). The fabricated CoS/BiVO4 photoanode exhibits significantly enhanced photocurrent density, charge injection yield, and charge separation efficiency compared to pristine BiVO4.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Peixin Yang, Huihui Shi, Hangfei Wu, Duohuan Yu, Lu Huang, Yali Wu, Xiangnan Gong, Peng Xiao, Yunhuai Zhang
Summary: In this work, a novel electrochemical reduction strategy combined with co-catalyst modification is proposed to manipulate the surface states of BiVO4. The electrochemical reduction treatment forms an ultrathin amorphous structure on the surface of BiVO4, reducing the surface energy and passivating the recombined surface states. The FeOOH co-catalyst layer enhances the intermediate surface states of BiVO4, stabilizes the surface structure, and improves its photoelectrochemical performance.
Article
Chemistry, Multidisciplinary
Xin-Yu Yang, Zong-Wei Chen, Xin-Zheng Yue, Xin Du, Xing-Hui Hou, Li-Ying Zhang, De-Liang Chen, Sha-Sha Yi
Summary: A structural engineering strategy is used to coat a ultrathin CoFe bimetal-organic framework (CoFe MOF) layer over a BiVO4 photoanode, resulting in boosted charge separation and transfer. The optimized BiVO4/CoFe MOF(NA) photoanode exhibits a photocurrent density of 3.92 mA cm(-2) at 1.23 V versus reversible hydrogen electrode (RHE), which is 6.03 times higher than that of pristine BiVO4, due to improved efficiency of charge transfer and separation. The CoFe MOF(NA) prolongs charge recombination lifetime and shifts the onset potential negatively, enhancing the performance of the photoanode for solar H-2 production.
Article
Chemistry, Physical
Li Fu, Wei Lian, Yimin Lin, Wanqing Fang, Rongzi Xv, Xiaoying Shang
Summary: In this study, BiVO4/TiO2-N photoanodes were synthesized by nitrogen doping and BiVO4 modification of TiO2 nanotubes. The BiVO4/TiO2-N photoanodes exhibited improved light absorption ability, charge separation efficiency, and injection efficiency compared to traditional TiO2 photoanodes, resulting in increased photocurrent density for hydrogen and oxygen evolution.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Biochemistry & Molecular Biology
Christopher M. A. Brett
Summary: Electrochemical impedance spectroscopy is increasingly used in the characterization and quantitative determination of electrochemical sensors and biosensors. However, current research often fails to fully utilize the information obtained from full physical modeling and analysis of the impedance spectra, thus providing only superficial insights into the underlying processes. This article presents the fundamentals of electrochemical impedance for sensors and biosensors, with a focus on the necessary electrical circuit elements. Examples are provided to demonstrate the use of impedance spectroscopy in characterization and electroanalytical applications, emphasizing the importance of utilizing the complete information obtained from modeling and analysis. The future prospects of electrochemical impedance in the sensing field are also discussed.
Article
Environmental Sciences
Na Zhou, Ruiyao Yan, Xiuqing Wang, Jianyu Fu, Jianmin Zhang, Yanting Li, Xiuguo Sun
Summary: This study enhanced the photocatalytic efficiency of ZnO in the visible-light region by combining plasmonic noble metal nanoparticles with ZnO to form core-shell nanostructures. The photocurrent response of metal@ZnO core-shell nanocomposites was higher than pure ZnO, and it was related to the thickness of ZnO. Introducing an Ag shell was found to increase the photoelectrocatalytic efficiency compared to pure Au NPs core.
Article
Energy & Fuels
Annalisa Polo, Maria Vittoria Dozzi, Ivan Grigioni, Charles Lhermitte, Nukorn Plainpan, Luca Moretti, Giulio Cerullo, Kevin Sivula, Elena Selli
Summary: Mo6+ doping enhances the photoelectrochemical performance of BiVO4 photoanodes in water oxidation. The mechanisms behind this improvement are revealed through transient absorption spectroscopy and impedance spectroscopy, showing that Mo6+ ions improve electron transport and surface properties of BiVO4 photoanodes.
Article
Nanoscience & Nanotechnology
Hilmar Guzman, Fabio Salomone, Samir Bensaid, Micaela Castellino, Nunzio Russo, Simelys Hernandez
Summary: The study focuses on converting CO2 into valuable chemicals and fuels through electrocatalytic processes using Cu/ZnO catalysts. The addition of ZnO stabilizes the Cu1+/Cu-0 interface on the catalyst surface, potentially enhancing the surface properties and increasing the productivity of CO2 conversion products by optimizing the ZnO loading.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Giancosimo Sanghez de Luna, Adriano Sacco, Simelys Hernandez, Francesca Ospitali, Stefania Albonetti, Giuseppe Fornasari, Patricia Benito
Summary: In this study, a highly selective electrochemical reduction of 5-hydroxymethylfurfural to 2,5-bishydroxymethylfuran was achieved using an AgCu foam electrocatalyst. The selectivity depended on the current density and reaction time, with optimal conditions resulting in high BHMF selectivity and production, albeit with co-generation of hydrogen gas.
Article
Chemistry, Physical
Arianna Massaro, Adriana Pecoraro, Simelys Hernandez, Giovanni Talarico, Ana B. Munoz-Garcia, Michele Pavone
Summary: The first-principles investigation of Mo/W-doped BiVO4 materials reveals the beneficial effect of Mo/W doping on surface re-organizations, forming a stabilizing Biopp site for hydration and catalytic capabilities, ultimately significantly enhancing catalytic performances for OER.
MOLECULAR CATALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Geetanjali Deokar, Abdeldjalil Reguig, Manoj Tripathi, Ulrich Buttner, Alberto Fina, Alan B. Dalton, Pedro M. F. J. Costa
Summary: This study presents a flexible and efficient heater based on a nanoscale-thick graphite film. The heater exhibits stable performance in a wide temperature range and has a fast response time, achieving high temperatures at low power.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Giacomo Damonte, Lorenza Maddalena, Alberto Fina, Dario Cavallo, Alejandro J. Mueller, Maria Rosaria Caputo, Alberto Mariani, Orietta Monticelli
Summary: The mechanical properties of PHEA-based hydrogels were improved by synthesizing a star-shaped polymer with PCL arms to act as a crosslinker, resulting in hydrogels with enhanced mechanical strength. The presence of the star polymer promoted crosslinking and compatibility between the polymers, leading to hydrogels with outstanding modulus and structural stability under compression loadings.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Energy & Fuels
Natalia Mazur, Sergio Salviati, Henk Huinink, Alberto Fina, Federico Carosio, Hartmut Fischer, Olaf Adan
Summary: This paper investigates the interaction between strontium bromide hexahydrate (SBH) and polydiallyldimethylammonium chloride (PDAC) as well as other additives in thermochemical heat storage (TCHS) composites. The study explores the effects of these additives on reaction temperature and speed and finds that PDAC can both inhibit and enhance hydration depending on its content in the composite.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Multidisciplinary
Francesco Cantamessa, Giacomo Damonte, Orietta Monticelli, Rossella Arrigo, Alberto Fina
Summary: In this study, a covalent adaptable network based on the thermoreversible cross-linking of an ethylene-propylene rubber through Diels-Alder reaction was prepared through melt blending. The research shows that this rubber has the potential to compete with conventionally cross-linked elastomers and can be recycled through a simple melt processing step. Furthermore, the addition of reduced graphene oxide to the thermoreversible rubber significantly improves its stiffness and thermal conductivity.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Applied
Maddalena Zoli, Daniela Roldan, Hilmar Guzman, Micaela Castellino, Angelica Chiodoni, Katarzyna Bejtka, Nunzio Russo, Simelys Hernandez
Summary: Conversion of CO2 into high-value-added products is attracting increasing attention as a substitute for fossil-based resources and in addressing the environmental crisis. In this study, a noble and scalable Cu2O-SnO2 photo-electrocatalyst was successfully synthesized and characterized, which effectively protected unstable Cu+1 species from photo-corrosion. The role of SnO2 as a stabilizer was confirmed through chronoamperometry tests and XPS analysis. CO2 photo-electroreduction tests using an optimized catalytic ink demonstrated the prevalent production of CO and formate, with high Faradaic efficiencies and good system stability. Sunlight illumination was found to play a crucial role in hindering H2 evolution and promoting the formation of >=C1+ products.
Article
Polymer Science
Luciano Fabrizio, Rossella Arrigo, Maria Teresa Scrivani, Marco Monti, Alberto Fina
Summary: In this study, end-of-life PET trays were chemically modified into a covalent associative network, upcycling tPET and improving its performance. The modified tPET exhibited enhanced thermomechanical resistance, tensile strength, and elongation at break, making it suitable for applications beyond bottles, such as textiles.
Article
Chemistry, Multidisciplinary
Alessandro Sanginario, Simelys Hernandez
Summary: The demand for new electrochemical reaction technologies and related engineering aspects is increasing due to the shift towards green technologies and the use of renewable electricity sources. Research on new electro-catalytic pathways to improve efficiency and reduce costs is crucial. Electrochemical impedance spectroscopy (EIS) is extensively used in the study of electrocatalysts and electrochemical systems, particularly for diagnostics in the field of electrocatalysis. Its application is more prevalent in mature technologies like batteries, fuel cells, and biosensors.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Chemistry, Applied
Giacomo Damonte, Francesco Cantamessa, Alberto Fina, Orietta Monticelli
Summary: The aim of this study was to improve the dispersibility of graphite nanoplatelets (GNP) in poly (epsilon-caprolactone) (PCL) films by synthesizing a star-shaped PCL with furoate-like end groups (PCL-Fur) that can interact with GNP. The reactivity of GNP with furoate groups was demonstrated, and the dispersion of graphite in PCL-Fur solution was studied. The composite films prepared with PCL-L/PCL-Fur/GNP showed well-dispersed GNP and high electrical conductivity.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Engineering, Chemical
Giulia Cuatto, Maddalena Zoli, Mario Gallone, Hilmar Guzman, Micaela Castellino, Simelys Hernandez
Summary: A facile, reproducible, and scalable wet precipitation method was optimized to synthesize Cu2O nanocubes with tuneable morphology and photocatalytic properties. The size of Cu2O crystallites was controlled by adjusting the flow rate of the reducing agent, resulting in enhanced photo-electrocatalytic activity.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Polymer Science
Valentina Cavallo, Sebastien Pruvost, Jean-Francois Gerard, Alberto Fina
Summary: Poly(methylmethacrylate-co-methacrylic acid) (PMMA-co-MAA) polymers were synthesized with a high conversion rate of 98.5% and a final ratio of MMA/MAA equal to 63:37 mol%. These polymers were then used as a matrix for cellulose-based nanocomposites, with cellulose nanofibers (CNFs) dispersed using a solution with a mixture of solvents. The resulting transparent films of PMMA-co-MAA + CNF showed good dispersion of CNF in the matrix, leading to reinforced polymethacrylate matrix with increased tensile strength and optical transparency.
Article
Chemistry, Physical
Roger Miro, Hilmar Guzman, Cyril Godard, Aitor Gual, Federica Zammillo, Thomas J. S. Schubert, Boyan Iliev, Angelica Chiodoni, Simelys Hernandez, Miriam Diaz de los Bernardos
Summary: Photoelectrochemical carbon dioxide reduction was successfully performed at ambient temperature and pressure using molecular chromophores and catalyst assemblies on CuGaO2-based electrodes in an ionic liquid organic solution. A series of molecular and supramolecular hybrid photocathodes were prepared by a simple and versatile methodology. The most promising conditions for CO2 reduction were determined and the results showed that the presence of the ionic liquid enhanced the conversion of CO2 to formic acid while suppressing hydrogen production. Anchoring supramolecular complexes on semiconductor photoelectrocatalysts boosted both carrier transport and catalytic activity, achieving a high faradaic efficiency of up to 81%.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Noemi Pirrone, Federico Bella, Simelys Hernandez
Summary: This article critically outlines the recent developments in solar-driven water splitting for hydrogen production. It describes the three fundamental types of devices (photocatalytic, photoelectrochemical, and photovoltaic-electrolyzer) in terms of working principles and highlights the progress in materials optimization and device engineering, emphasizing the limitations of large-scale application. The article also considers the feasibility of sun-driven hydrogen production from an economic perspective and explores the potential integration of this technology in the world energy supply scenario.
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)
