Article
Chemistry, Physical
Huanhuan Xu, Peizhi Fan, Lan Xu
Summary: In this study, CuO/ZnO/carbon quantum dots (CQDs)@PAN nanocomposites with ternary heterostructures (CZC@PAN) were prepared and their application in degrading methylene blue (MB) was investigated. The synergistic effects of components in ternary heterostructures on the morphology, structure, and photocatalytic performance of CZC@PAN were analyzed, and their photocatalytic mechanism was discussed. The results showed that CZC@PAN exhibited excellent photocatalytic degradation performance, with a degradation rate of 99.56% for MB under natural sunlight for 4 hours.
Article
Chemistry, Multidisciplinary
Hong-Yan Wang, Wei-Hua Xie, Dong-Dong Wei, Rong Hu, Na Wang, Kai Chang, Shuang-Lei Lei, Bin Wang, Rui Cao
Summary: A hybrid photocatalytic assembly with efficient charge separation and great synergy was developed via thiophene immobilization, achieving a high syngas production rate and adjustable H-2/CO ratio under visible-light irradiation.
Article
Multidisciplinary Sciences
Yang Cheng, Egecan Cogulu, Rachel D. Resnick, Justin J. Michel, Nahuel N. Statuto, Andrew D. Kent, Fengyuan Yang
Summary: The authors demonstrate harmonic measurements in Pt/alpha-Fe2O3 bilayers, which provide insights into the current-induced magnetization dynamics in antiferromagnets. In contrast to ferromagnetic heterostructures, the damping-like torque and thermally-induced magnetoelastic effect contributions appear in the third harmonic voltage. This study facilitates further understanding and application of antiferromagnetic spintronic devices.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Suyan Liu, Xiaoran Qi, Zhanpeng Fan, Jianzheng Song, Quan Huo
Summary: A series of NCDs-decorated hematite@MIL-101(Cr) hybrids were developed for the efficient removal of carbamazepine. The successful preparation of the hybrid was confirmed by various characterization techniques. The as-prepared hybrids showed significantly improved removal performances for CBZ, and the hybrid 0.3HMC2 exhibited the best adsorption-photocatalysis coupling effects.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Physical
Jinglin Li, Hao Yuan, Jiaxin Li, Wenjie Zhang, Yanqi Liu, Na Liu, Haijie Cao, Zhengbo Jiao
Summary: Chemically bonded BiVO4/ZnO quantum dot heterostructures were fabricated using a simple solution dry-out method, forming chemically bonded interfaces (CBIs) that promote photoexcited electron transfer and serve as hole-blocking layers. The CBIs showed excellent performance in both UV and visible light regions, leading to significantly increased photocurrent density in BiVO4/ZnO QDs without a cocatalyst. Additionally, ethylene glycol was found to partially reduce Bi ions to elemental bismuth during the calcination process, contributing to improved water oxidation kinetics.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Hao Yuan, Haoran Sun, Yuxing Shi, Jiaxuan Wang, Ang Bian, Youyou Hu, Feng Guo, Weilong Shi, Xin Du, Zhenhui Kang
Summary: Researchers constructed a g-C3N4 system doped with carbon and loaded with carbon dots (CDs) to investigate the effect of trap states, revealing a 4-fold increase in H2 evolution efficiency compared to ordinary g-C3N4 during photocatalysis. The study provides insight into interfacial charge transfer and transport dynamics, which can guide the design and development of highly active carbon-based composite photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xuefeng Zhang, Jiayu Ouyang, Xinmiao Qi, Ze Li, Qiang Ma, Xin Guo, Shanshan Jia
Summary: A photocatalytic adsorbent, CCCZ, was synthesized for effective removal of hexavalent chromium contamination. CCCZ exhibited exceptional adsorption capacity for Cr(VI), surpassing that of original chitosan gel bead by a factor of 3.4. Additionally, CCCZ showed efficient regeneration capacity and long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Lingyun Hao, Yuanyuan Yu, Zhanming Liang, Hewei Hou, Xi Liu, Changzhou Chen, Douyong Min
Summary: In this study, nitrogen-doped carbon quantum dots (NCQDs) with different properties were prepared by using kraft lignin as the raw material and EDA as a nitrogen dopant. The amount of EDA added affected the carbonization reaction and surface state of NCQDs. The results showed that the surface defects of NCQDs increased, and the fluorescence intensity and stability improved. NCQDs also exhibited high photo-catalytic activity in degrading methylene blue under simulated sunlight irradiation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Nanoscience & Nanotechnology
J. A. Ramos Ramon, A. Alvarez Gallegos, S. Silva Martinez, V Agarwal
Summary: In this study, nitrogen-doped carbon dots-zinc oxide hybrid nanostructures were fabricated using simple chemical procedures. The introduction of NCDs modified the growth properties of ZnO and induced additional emission peaks, leading to improved efficiency in methylene blue dye degradation. The hybrid nanostructures showed excellent reusability and stability, making them promising for industrial-level wastewater treatment photocatalysis.
Review
Chemistry, Multidisciplinary
Yue Yu, Qingsen Zeng, Songyuan Tao, Chunlei Xia, Chongming Liu, Pengyuan Liu, Bai Yang
Summary: Seeking clean energy as an alternative to traditional fossil fuels is necessary for sustainable development. Carbon dots, a type of carbon nanomaterials, are being extensively researched for their potential as metal-free photocatalysts due to their strong UV-vis absorption, tunable energy levels, excellent charge transfer ability, stability, and low toxicity. This review systematically summarizes the classification, microstructures, synthetic methods, optical and photoelectrical properties of carbon dots. The recent advances in carbon dots-based photoinduced reactions, including photodegradation, photocatalytic hydrogen generation, CO2 conversion, N-2 fixation, and photochemical synthesis, are also highlighted, providing deep insights into their roles in various systems.
Review
Chemistry, Multidisciplinary
Lin Cui, Xin Ren, Mengtao Sun, Haiyan Liu, Lixin Xia
Summary: Carbon dots (CDs) are emerging as a promising carbon-based nanomaterial with unique electronic and optical properties, making them attractive for biomedical and photocatalytic applications. The CDs possess low toxicity, good biocompatibility, excellent photostability, tunable fluorescence, outstanding efficient up-converted photoluminescence behavior, and photo-induced electron transfer ability, which enhances their potential in various fields.
Article
Chemistry, Multidisciplinary
Beatrice Bartolomei, Vasco Corti, Maurizio Prato
Summary: In this study, a microwave synthesis method was used to produce a new type of chiral Carbon Nanodots (CNDs), which showed interesting absorption and emission properties and exhibited enantioselective organocatalytic reactions. The CNDs also displayed redox and light-absorbing properties suitable for driving photochemical processes. The CNDs were used as catalysts to promote cross-dehydrogenative coupling, demonstrating their potential to replace molecular catalysts in multiple reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jinpeng Bai, Nan Xiao, Yuwei Wang, Hongqiang Li, Chang Liu, Jian Xiao, Yibo Wei, Zhen Guo, Jieshan Qiu
Summary: Carbon dots (CDs) with tunable size were synthesized from coal tar pitch using a hydrothermal method with NaOH as additive. The obtained CDs demonstrated high crystallinity and the size could be regulated by adjusting the amount of NaOH added. Increasing the size of the CDs from 1.9 to 5.8 nm resulted in a 70% improvement in the solar-to-hydrogen efficiency when Pt was supported on the CDs.
Review
Chemistry, Multidisciplinary
Lin Ai, Run Shi, Jie Yang, Kan Zhang, Tierui Zhang, Siyu Lu
Summary: This review focuses on the potential applications of heterogeneous photocatalysts composed of g-C3N4 and CDs in resolving tough energy and environmental issues through an ecologically sustainable manner. It discusses various synthetic methods, strategies for enhanced performance, and applications in hydrogen generation, carbon dioxide reduction, and organic pollutants degradation, providing guidance for further powerful combination of g-C3N4 and CDs in photocatalysis.
Article
Engineering, Environmental
Ozlem Tuna, Esra Bilgin Simsek
Summary: In this study, a novel ferrite perovskite material CeFeO3 was designed with nitrogen-doped carbon quantum dots (NCQDs) for efficient degradation of ciprofloxacin (CPX) in a peroxymonosulfate (PMS) activated photocatalytic system. The effect of NCQDs addition in the PMS-activated system was examined through characterization and photocatalytic tests. The CeFeO3 @NCQDs heterojunction showed superior catalytic performance (92.5%) compared to bare CeFeO3 (32.0%). XPS analysis revealed the formation of new oxygen-rich bonds in the CeFeO3 @NCQDs sample, providing new reaction sites. PL technique showed higher carrier separation efficiency in the composite due to excellent electron transfer property of NCQDs. The change in band energy potentials improved the oxidation ability, resulting in increased degradation rate. The CeFeO3 @NCQDs/Vis/PMS system showed promise for practical wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Aline A. S. Oliveira, Amanda R. Martins, Roberta V. Ferreira, Igor T. Cunha, Philippe Serp, Joao Paulo de Mesquita, Flavia C. C. Moura
Article
Chemistry, Physical
Alessandra Pires Passos Zattar, Gabriela Ladeira Fajardo, Joao Paulo de Mesquita, Fabiano Vargas Pereira
Summary: In this study, carbon dots (CDs) were prepared from a nitrogen-rich precursor, chitosan, using two different methods with the aim of studying their characteristics. Functionalization was also applied to enhance the optical properties of the CDs, resulting in narrow size distribution with diameters ranging from 1.0-3.6 nm. CDs obtained from hydrothermal carbonization method showed more nitrogen functional groups and achieved a quantum yield of 15.3%.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2021)
Article
Chemistry, Analytical
Izabela Campos Sena, Davi de Oliveira Sales, Tatiana Santos Andrade, Mariandry Rodriguez, Adilson Candido da Silva, Francisco Guilherme Esteves Nogueira, Jairo Lisboa Rodrigues, Joao Paulo de Mesquita, Marcio Cesar Pereira
Summary: An all-inorganic PFC with a heterostructured W-BiVO4/V2O5 photoanode and platinum cathode has been developed, utilizing sulfite ions as the anolyte and Fe3+ as the catholyte. Under optimized conditions, the PFC exhibits high short-circuit current, open-circuit potential, and power density, showcasing efficient charge separation and hole transport.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Wanessa L. Oliveira, Meiriele Antunes Ferreira, Henrique A. J. L. Mourao, Manoel J. M. Pires, Vinicius Ferreira, Honoria F. Gorgulho, Daniel F. Cipriano, Jair C. C. Freitas, Valmor R. Mastelaro, Otaciro R. Nascimento, Dalva E. C. Ferreira, Frederico Ramos Fioravante, Marcio C. Pereira, Joao P. de Mesquita
Summary: This study demonstrates that oxygenated graphitic carbon nitride (g-C3N4) prepared at different temperatures can degrade indigo carmine with hydrogen peroxide in the dark by a reaction similar to a conventional Fenton's reaction. The Fenton-like activity is directly related to the oxygenated functional groups on g-C3N4 structure, mainly -OH functional groups, suggesting a potential alternative to traditional metal catalysts in Fenton-like reactions for advanced oxidation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Polymer Science
Natalia Maria Borges Ladeira, Claudio Luis Donnici, Joao Paulo de Mesquita, Fabiano Vargas Pereira
Summary: Chitosan and carboxymethyl chitosan-based hydrogels were prepared in this study by crosslinking biobased polymers with hexamethylene diisocyanate. The comparison between the two hydrogels showed significant differences in water absorption capacity, with the carboxymethyl chitosan-based hydrogel exhibiting a higher swelling ratio. Furthermore, the morphologies of the two hydrogels were considerably different.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Himad Alcamand, Henrique Oliveira, Jose Gabriel, Carlos Bruziquesi, Luiz Oliveira, Bruno Goncalves, Henrique Victoria, Klaus Krambrock, Manuel Houmard, Eduardo Nunes
Summary: Perovskite-type LaMnO3 obtained by the sol-gel method was used as a catalyst for imine synthesis in a continuous flow system. The increase in temperature was found to improve the catalytic activity and selectivity of LaMnO3. The use of no organic solvent in the catalytic reactions is an important advantage in terms of simplicity and safety.
Article
Materials Science, Multidisciplinary
Alessandra Pires Passos Zattar, Joao Paulo de Mesquita, Fabiano Vargas Pereira
Summary: Carbon dots were prepared from cellulose using hydrothermal carbonization and functionalized to enhance quantum yield. The obtained carbon dots showed narrow size distribution and exhibited significant selectivity and sensitivity towards Fe3+ ions.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Himad Ahmed Alcamand, Henrique dos Santos Oliveira, Jose Gabriel Balena, Luiz Carlos de Oliveira, Pedro L. Gastelois, Manuel Houmard, Eduardo H. M. Nunes
Summary: A green methodology for synthesizing imine has been developed using a gas-phase oxidative coupling reaction in a continuous-flow system. LaMNO3 perovskites were used as heterogeneous catalysts, achieving a catalytic performance of 98% and remained stable for 8 hours. The catalysts were successfully regenerated and reused in five consecutive cycles. This solvent-free process offers advantages in terms of environmental friendliness, simplicity, and safety, while reducing the need for subsequent extraction and purification steps.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Plinio C. De Carvalho Pinto, Thais Batista, Gabriel De Rezende Ferreira, Geison P. Voga, Luiz C. A. Oliveira, Henrique S. Oliveira, Leonardo A. De Souza, Jadson C. Belchior
Summary: This study demonstrates that alcohols mixed with aqueous alkaline hydroxides can effectively capture CO2 under high basicity conditions. Short-chain alcohols and alkaline metals of greater molar mass show better CO2 absorption performance, and alcohols can act as catalysts to provide enhanced basicity and solvent properties.
Article
Chemistry, Physical
Tarciane da Silva Pinto, Everton Luiz de Paula, Joao Paulo de Mesquita, Fabiano Vargas Pereira
Summary: In this work, different carbon dots (CDs) were prepared using various bottom-up methods and low molar mass precursors. Characterization techniques such as TEM, potentiometric titration, FTIR, fluorescence, and UV-vis spectroscopy were used to analyze the nanoparticles. CDs obtained through conventional hydrothermal carbonization exhibited the highest quantum yield, while those obtained through heating reflux reaction had the lowest quantum yield due to incomplete polymerization and/or carbonization reactions. Furthermore, one of the samples showed high selectivity and sensitivity towards Fe3+ as a nanosensor, with a detection limit of 0.89 µM. The environmentally friendly synthesis strategy of the nanoparticles using CDs as sensors is simple, has a short response time, and is cost-effective.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Wanessa Lima de Oliveira, Eduarda Ferreira de Oliveira, Tais dos Santos da Cruz, Walker Vinicius Ferreira do Carmo Batista, Carlos Moraes, Fabiano Vargas Pereira, Moacir Rossi Forim, Gabriel Ali Atta Diab, Ivo Freitas Teixeira, Marcio Cesar Pereira, Joao Paulo de Mesquita
Summary: We present a novel coordination polymer based on iron(III)-cyamelurate. The material was synthesized in aqueous medium and characterized using various techniques such as TGA, FTIR, XRD, HRTEM, and STEM. Due to its high structural stability in aqueous media, the heterogeneous Fenton-like catalytic activity of the complex was evaluated using a model molecule. The results demonstrated significantly enhanced catalytic activity in both acidic and basic conditions, with pseudofirst-order rate constants normalized by iron(III) concentrations approximately 1000 times higher compared to traditional heterogeneous catalysts based on iron(III) oxyhydr-oxides. The observed superior catalytic performance was attributed to the increased binding sites of Fe3+ ions and the enhanced exposure of catalytic sites, resulting in higher atomic efficiency of the reaction.
Article
Materials Science, Multidisciplinary
A. P. de Souza, K. R. de Souza, D. L. Santos, D. A. G. R. Michel, P. R. Barroso, K. C. Kato, H. R. Martins, A. P. Rodrigues, J. M. Resende, J. P. de Mesquita, R. M. Verly
Summary: The study reports the synthesis of nanobiostructures comprising carbon dots covalently bound to an antimicrobial peptide. Functionalization of the nanoparticles was achieved through pre-activation of oxygenated functional groups using a specific chemical reaction. The functionalized nanobiostructures retained the optical properties of carbon dots and the active conformation and lytic activity of the peptide. These nanobiostructures exhibited similar activity against both Gram-positive and Gram-negative bacterial strains compared to the free peptide.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Wanessa L. Oliveira, Eduarda Ferreira de Oliveira, Walker Vinicius Ferreira do Carmo Batista, Henrique A. J. L. Moura, Manoel Jose Mendes Pires, Rafael Mendes Coelho, Gabriel Ali Atta Diab, Ivo Freitas Teixeira, Gleison Marques, Valmor Roberto Mastelaro, Otaciro Rangel Nascimento, Carlos Eduardo Valdes, Ernesto A. Urquieta-Gonzalez, Dalva E. C. Ferreira, Marico C. Pereira, Joao Paulo de Mesquita
Summary: We prepared and evaluated functionalized fragments of polymeric g-C3N4 sheets, and proposed a reaction mechanism for the formation of hydroxyl radicals on the material's surface in the presence of H2O2. The performance of the catalysts was found to depend on the functional groups and structure of the polymeric g-C3N4 sheets. The results may contribute to the development of strategies for studying and elucidating the reaction mechanisms involving metal-free catalysts.
Correction
Nanoscience & Nanotechnology
Henrique S. Oliveira, Laura M. Araujo, Plinio C. C. Pinto, Geison V. Pereira, Patricia S. O. Patricio, Jadson C. Belchior, Luiz C. A. Oliveira
INTERNATIONAL NANO LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Andre L. D. Lima, Humberto Fajardo, Andre E. Nogueira, Marcio C. Pereira, Luiz C. A. Oliveira, Joao Paulo de Mesquita, Adilson C. Silva
NEW JOURNAL OF CHEMISTRY
(2020)
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)
