Article
Chemistry, Multidisciplinary
Chenglong Li, Zhitao Han, Yuqing Hu, Tingjun Liu, Xinxiang Pan
Summary: In this study, a series of tungsten-zirconium mixed binary oxides were synthesized as supports for Ce-0.4/WmZrOx catalysts. The promoting effect of W doping on the SCR performance of Ce-0.4/ZrO2 catalysts was investigated. The results showed that proper W doping significantly enhanced the catalytic performance and SO2 tolerance of Ce-0.4/ZrO2 catalysts.
Article
Energy & Fuels
Xiaodi Li, Shan Ren, Lian Liu, Xiangdong Xing, Lin Chen, Jiangling Li, Jian Yang, Qingcai Liu
Summary: The deactivation of denitration catalysts by heavy metals is still a challenge in the practical application of selective catalytic reduction of NOx with NH3. In this study, a novel anti-poisoning strategy was proposed by designing a CeO2/ZrO2 catalyst supported by SO42-/ZrO2 superacid. The introduction of SO42-/ZrO2 significantly enhanced the catalytic performance, leading to high NOx removal efficiency throughout a wide temperature range.
Article
Energy & Fuels
Kaiwen Ni, Yuewang Peng, Yuting Wang, Zhiwei Huang, Huawang Zhao, Xiaomin Wu, Guohua Jing
Summary: The development of low-temperature SO2-tolerant catalysts for NOx reduction is a challenging task. In this study, a novel catalyst V2O5-MnO2/3D-CeO2 was successfully prepared and showed high resistance to SO2 in low-temperature SCR.
Article
Biotechnology & Applied Microbiology
Quanming Liang, Jian Li, Tao Yue
Summary: The addition of 3% CeO2 improved the performance and resistance of the V2O5-WO3/TiO2 catalyst by establishing a protective layer. The experiment showed that layered filling can slow down the catalyst's deactivation rate, and the deposition amounts of NH4+ and SO42- can be used as indicators for judging the degree of poisoning.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Yangfan Chen, Yuchen Zhang, Xin Feng, Jiangling Li, Weizao Liu, Shan Ren, Jian Yang, Qingcai Liu
Summary: In this study, Fe2O3-containing solid waste derived from Zn extraction process was used as the base material for catalyst preparation. The introduction of OD CeO2 quantum dots onto Fe2O3-containing solid waste nanorods significantly enhanced the NH3-SCR catalytic activity, N2 selectivity, and SO2 tolerance of the catalyst.
Article
Nanoscience & Nanotechnology
Jun Shen, Stefan Lauterbach, Christian Hess
Summary: Efficient nontoxic catalysts for low-temperature NH3 selective catalytic reduction (NH3-SCR) applications were prepared by depositing CuO-CeO2 on a mesoporous SBA-15 support. In situ spectroscopy revealed the decomposition mechanisms of nitrate and their influence on the catalytic activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tianyu Liu, Ruijie Yang, Guomeng Zhang, Weihong Wu, Zhengda Yang, Riyi Lin, Xinwei Wang, Ye Jiang
Summary: The reaction mechanism over CeO2-TiO2 catalyst involves both E-R and L-H mechanisms, with NH2NO species playing a key role as an intermediate. DFT calculations provide insights into the adsorption energy, activation energy barrier, and reaction heat for various steps in the process.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Zhitao Han, Yuqing Hu, Tingjun Liu, Chenglong Li, Song Zhou, Xinxiang Pan
Summary: In this study, Ce-Zr bimetal MOF derivatives were prepared by pre-annealing CexZr1_x/UiO-66 bimetal MOFs at different temperatures, and it was found that the pre-annealing temperature had a significant promoting effect on the catalytic performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Jinxiu Wang, Xianfang Yi, Qingfa Su, Jinsheng Chen, Zongli Xie
Summary: Researchers have developed novel FeCeVTi and MnCeVTi catalysts for low temperature selective catalytic reduction of NOx with NH3. The 7%FeCeVTi catalyst showed optimal performance with high NOx conversion, N-2 selectivity, and resistance to SO2, while the addition of MnOx improved catalytic activity but reduced N-2 selectivity and did not enhance resistance to SO2 and H2O. The NH3-SCR reaction on the CeVTi sample followed the E-R mechanism, while the FeCeVTi catalyst exhibited a combination of E-R and L-H mechanisms.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chenglong Li, Zhitao Han, Xinxin Wang, Yu Gao, Zhen Wang, Xinxiang Pan
Summary: This study investigates the effect of sulfuric acid treatment on the Ca resistance of CeO2 catalysts supported by ZrO2. The results demonstrate that the CeO2/ZrO2-S catalyst displays significantly better SCR activity and Ca resistance compared to the CeO2/ZrO2 catalyst. Characterization techniques such as BET, XRD, Raman, XPS, H-2-TPR, NH3-TPD, and in situ DRIFTS were employed to analyze the changes in structure and properties of the catalysts before and after Ca deactivation tests. The results indicate that the Ca poisoning in CeO2/ZrO2 catalysts is mainly caused by the decrease in surface area and acidity, loss of reducibility, and enhanced stabilization of adsorbed nitrate/nitrite species. The treatment of ZrO2 with sulfuric acid leads to an increase in surface area, highly-dispersed Ce species, inhibition of tetragonal to monoclinic phase transformation, improved redox properties, Ce3+ species ratio, total surface acidity (especially Bronsted acid sites), and adsorption of NH3 species. Furthermore, the SCR reactions via both Langmuir-Hinshelwood (L-H) and Eley-Rideal (E-R) mechanisms can still proceed effectively even after Ca poisoning in the CeO2/ZrO2-S catalysts.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Yuhan Zhou, Shan Ren, Jie Yang, Weizao Liu, Zenghui Su, Zhichao Chen, Mingming Wang, Lin Chen
Summary: NH3 treatment significantly improves the De-NO efficiency of CeO2 nanorods catalyst, especially in the temperature range of 160-410 degrees C. NH3 treatment promotes the production of Ce3+ on the surface of CeO2 catalyst, leading to more oxygen vacancies and enhanced SCR reaction. Additionally, NH3 treatment disrupts the crystallinity of CeO2 catalyst, enhances its reducibility, and increases the content of active functional groups on the surface.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Physical
Martin Elsener, Rob Jeremiah G. Nuguid, Oliver Krocher, Davide Ferri
Summary: Research has shown that formaldehyde in exhaust gases can react with NH3 to produce HCN, leading to a parasitic consumption of NH3 and a decrease in NOx conversion rate by up to 15%. Additionally, the non-reducible TiO2 support also produces moderate levels of HCN, indicating that redox sites enhance the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Ningqiang Zhang, Jiahuan Tong, Shinta Miyazaki, Shirun Zhao, Hiroe Kubota, Yuan Jing, Shinya Mine, Takashi Toyao, Ken-ichi Shimizu
Summary: This study investigates the active sites and reaction mechanism for the selective catalytic reduction of NO by NH3 over phosphate-loaded ceria catalysts. The results reveal the presence of H3PO4 and H2P2O6 species on the catalysts, which interact with Ce4+(OH-) species and undergo reduction/oxidation half-cycles to produce N2, H2O, and Ce3+ species.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jun Cao, Zhuquan Lu, Liumei Teng, Xu Qiao, Weizao Liu, Hongli Wu, Lijun Jiang, Qirong Wu, Qingcai Liu
Summary: This study investigated the poisoning effects of K2O and PbO on the NH3-SCR performance of TiO2-CeO2 catalyst, and found a stronger toxicity when both were introduced simultaneously, hindering electron transfer and surface acidity. Furthermore, the combination of K and Pb reduced the activation performance of NOx species and did not alter the Langmuir-Hinshelwood mechanism of the catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Wei Li, Xuesen Du, Zhi Li, Yaqin Tao, Jingyu Xue, Yanrong Chen, Zhongqing Yang, Jingyu Ran, Vladislav Rac, Vesna Rakic
Summary: In this study, a catalyst embedded with electrothermal alloy was prepared to widen the operating temperature window of the V2O5-WO3/TiO2 catalyst. The experimental results showed that the electrothermal alloy embedded catalyst maintained superior NH3-SCR performance and high resistance to H2O in a wide temperature range. Additionally, the NH4HSO4 poisoned catalyst could be efficiently regenerated through electric heating.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Applied
Nils Ortner, Henrik Lund, Udo Armbruster, Sebastian Wohlrab, Evgenii Kondratenko
Summary: The effects of metal oxide promoter and InOx on catalyst activity and product selectivity in the CO2 hydrogenation to methanol reaction were investigated. The promoters influenced the rates of direct CO2 conversion and methanol decomposition by affecting the dispersion of CuOx and the strength of basic sites for CO2 adsorption.
Article
Materials Science, Multidisciplinary
Maria Heilmann, Carsten Prinz, Ralf Bienert, Robert Wendt, Benny Kunkel, Joerg Radnik, Armin Hoell, Sebastian Wohlrab, Ana Guilherme Buzanich, Franziska Emmerling
Summary: A facile and efficient method is described for the synthesis of size-tunable, stable, and uniform NiCu core-shell nanoparticles for catalysis. The nanoparticles exhibit a core-shell-shell structure with high selectivity for CO in the catalytic reduction of CO2 to CO. Transmission electron microscopy and other analytical techniques were used for structural characterization and elucidation of chemical composition.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Physics, Condensed Matter
Benjamen P. Reed, Joerg Radnik, Alexander G. Shard
Summary: In this study, X-ray photoelectron spectroscopy was used to analyze the surface composition of an ionic liquid droplet. High-resolution spectra of various elements and a survey spectrum were presented.
SURFACE SCIENCE SPECTRA
(2022)
Article
Chemistry, Multidisciplinary
Ievgeniia Topolniak, Anna Maria Elert, Xenia Knigge, Goksu Cinar Ciftci, Joerg Radnik, Heinz Sturm
Summary: This study demonstrates a PDA deposition method based on multiphoton lithography, which enables full control over spatial and temporal aspects, and allows for flexible pattern design. 2D microstructures with complex designs are achieved with high pattern precision, and the morphology and thickness of the fabricated microstructure can be adjusted within one deposition step, providing tunability of material properties. This work introduces a new method for high-precision and complete control of PDA deposition, enabling its incorporation in applications that require fine and precise local surface functionalization.
ADVANCED MATERIALS
(2022)
Review
Biochemical Research Methods
Jorg Radnik, Xenia Knigge, Elina Andresen, Ute Resch-Genger, David J. H. Cant, Alex G. Shard, Charles A. Clifford
Summary: This review discusses the possibilities, limits, and challenges of using X-ray photoelectron spectroscopy (XPS) to study the composition, thickness, and homogeneity of nanoparticle coatings. Different approaches for calculating the coating thickness are presented, and the use of XPS background modeling and measuring with varying excitation energies or hard-energy X-ray sources are also discussed.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Quan Luu Manh Ha, Hanan Atia, Carsten Kreyenschulte, Henrik Lund, Stephan Bartling, Grzegorz Lisak, Sebastian Wohlrab, Udo Armbruster
Summary: This study achieved efficient reforming of biogas using low Ni loading catalysts modified with Gd, Sc, or La. Sc and Gd modifications showed enhanced stability and resistance to coking in DRM reactions with methane-rich gases. Gd-modified catalysts demonstrated minimal increase in coke deposition even after extended operation time.
Article
Biochemistry & Molecular Biology
Joerg Radnik, Vasile-Dan Hodoroaba, Harald Jungnickel, Jutta Tentschert, Andreas Luch, Vanessa Sogne, Florian Meier, Loic Burr, David Schmid, Christoph Schlager, Tae Hyun Yoon, Ruud Peters, Sophie M. Briffa, Eugenia Valsami-Jones
Summary: While the characterization of nanomaterials using analytical techniques is well-automated, the manual sample preparation process poses a bottleneck in nanomaterial analysis. This article discusses solutions to address this issue in nano-analytics and presents two case studies on automation in sample introduction and analysis of biological samples. The results demonstrate that standardization and automation of sample preparation setups, combined with appropriate measurement processes and data reduction, are crucial for obtaining reliable and reproducible data.
Review
Chemistry, Physical
Selina Niess, Udo Armbruster, Sebastian Dietrich, Marco Klemm
Summary: Direct biogas methanation faces challenges regarding the influence of high methane content on the reaction and overall efficiency, as well as improving the resistance of catalysts to sulfur-containing compounds. Materials with two active metals and binary oxide support seem to offer technically applicable solutions for these challenges.
Article
Chemistry, Multidisciplinary
Max Rautenberg, Marius Gernhard, Joerg Radnik, Julia Witt, Christina Roth, Franziska Emmerling
Summary: Catalysts derived from pyrolysis of MOFs are potential alternatives to expensive and scarce platinum-based electrocatalysts in polymer electrolyte membrane fuel cells. By pyrolyzing MOFs, metal and nitrogen-doped carbons can be obtained, which show electrocatalytic activity towards ORR. In addition, metal-free heteroatom-doped carbons also exhibit activity. Therefore, carbon materials with Co-N-F doping may be more promising as ORR electrocatalysts.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Ronald Hesse, Reinhard Denecke, Joerg Radnik
Summary: Recent developments in X-ray photoelectron spectroscopy require more flexible approaches to determine the transmission function, with the refinement of the quantified peak areas method allowing for a more precise estimation of the transmission function.
SURFACE AND INTERFACE ANALYSIS
(2022)
Article
Chemistry, Physical
Annica Wetzel, Marcus von der Au, Paul M. Dietrich, Joerg Radnik, Ozlem Ozcan, Julia Witt
Summary: This study investigated the corrosion characteristics of CrCoNi and CrMnFeCoNi alloys in different solutions, and found that CrCoNi exhibited better corrosion resistance.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Kristian Melin, Jan Ole Struven, Patrick Eidam, Jorn Appelt, Christin Hummel, Udo Armbruster, Yann Chapelliere, Claude Mirodatos, Yves Schuurman, Anja Oasmaa
Summary: A new route for upgrading black liquor from the kraft process to hybrid gasoline is presented. The process involves hydrothermal liquefaction, removal of alkaline metal salts, hydro-deoxygenation, and coprocessing with vacuum gas oil. High deoxygenation is beneficial for cracking the refined crude oil into gasoline fractions. By limiting the percentage of added pretreated biocrude, high naphtha yields can be maintained.
Article
Nanoscience & Nanotechnology
Ievgen S. Donskyi, Xin Huang, Natalie Wichmann, Obida Bawadkji, Rameez Ahmed, Philip Nickl, Svenja Herziger, Joerg Radnik, Katharina Achazi, Haishi Qiao, Mohsen Adeli
Summary: In this research, the authors developed a straightforward method for covalently functionalizing black phosphorous nanosheets with biopolymers. The functionalized nanosheets showed excellent stability, water solubility, and loading capacity for drug delivery. The authors also demonstrated the potential of the functionalized nanosheets for targeted drug delivery and bioimaging.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biochemical Research Methods
Robert Jungnickel, Francesca Mirabella, Joerg Manfred Stockmann, Joerg Radnik, Kannan Balasubramanian
Summary: This study presents an optimized preparation strategy for graphene-coated surface plasmon resonance chips, allowing them to be annealed at high temperatures without deterioration of surface morphology. The annealing process improves spectral response and refractive index sensitivity. The sensors demonstrate applicability in studying binding kinetics and can be reused multiple times.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Romy Breitenbach, Ruben Gerrits, Polina Dementyeva, Nicole Knabe, Julia Schumacher, Ines Feldmann, Jorg Radnik, Masahiro Ryo, Anna A. Gorbushina
Summary: The roles of extracellular polymeric substances (EPS) in mineral attachment and weathering were investigated using genetically modified biofilms of Knufia petricola strain A95. Mutants deficient in melanin and/or carotenoid synthesis were grown as air-exposed biofilms. The presence of melanin affected the quantity and composition of EPS, with melanin-producing strains showing stronger attachment to the mineral olivine and faster dissolution rates. The pullulan-related glycosidic linkages in EPS enable fungal attachment and weathering, while phenolic intermediates released by melanin synthesis may enhance olivine dissolution. These findings highlight the importance of compositional and quantitative analyses of biofilm microenvironments.
NPJ MATERIALS DEGRADATION
(2022)
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)
