Article
Energy & Fuels
Zijian Zhou, Lei Liu, Xiaowei Liu, Yue Zhou, Changqing Wang, Jingying Xu, Guozhang Chang, Minghou Xu
Summary: MnOx-based oxides are efficient catalysts for elemental mercury oxidation in flue gas, and combining with CeO2 or CeO2-ZrO2 enhances their catalytic activity. The new MnOx-CeO2-ZrO2 solid solution catalyst showed better Hg-0 oxidation performance compared to the MnOx/CeO2-ZrO2 supported catalyst. Mn4+ and surface active oxygen were identified as the active species in Hg-0 oxidation reactions, and SO2 significantly inhibited the activity of MnOx/CeO2-ZrO2 but had less impact on MnOx-CeO2-ZrO2 solid solution.
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
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
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
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, Chemical
Liping Liu, Xiaodong Wu, Yue Ma, Jinyi Wang, Rui Ran, Zhichun Si, Duan Weng
Summary: In this study, a V2O5-Sb2O3/TiO2 monolithic catalyst was modified with WO3, leading to enhanced catalytic activity in the temperature range of 175-320 degrees C. Characterization techniques such as UV-Vis spectroscopy, H-2-TPR, TPDC, TG analysis, TPD, isothermal SO2 oxidation, and TPSR were used to investigate the effects of WO3 modification on the sulfate tolerance of the catalyst.
Article
Chemistry, Multidisciplinary
Zhiyuan Zhou, Yongzhao Wang, Qunfu Yuan, Yanle Guo, Wenyao Guo, Zhiling Xin, Bingsen Zhang, Ruitang Guo
Summary: In this study, a series of CeO2/GO composite catalysts were prepared, and the 10 wt%CeO2/GO catalyst was found to exhibit better catalytic performance and higher SO2 resistance in SCR reactions. The catalyst possessed a larger specific surface area and enriched surface acidic sites.
Article
Engineering, Chemical
Jung Ho Park, Thi Phuong Thao Nguyen, Moon Hyeon Kim, Yongseok Hong
Summary: Simultaneous NO reduction and Hg-0 oxidation in the exhaust gas of a coal-fired power plant were studied using V2O5-WO3/TiO2. The increase in vanadia contents and temperature increased both NO reduction and Hg-0 oxidation. However, the increase in NH3 concentration increased NO reduction but decreased Hg-0 oxidation, while the increase in HCl concentration increased Hg-0 oxidation. Under certain conditions, more than 85% NO and Hg-0 can be removed using 2.0% vanadia content and a minimum HCl concentration of 10 ppm.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Hiroe Kubota, Yuan Jing, Li Wan, Jiahuan Tong, Ningqiang Zhang, Shinya Mine, Takashi Toyao, Ryo Toyoshima, Hiroshi Kondoh, Davide Ferri, Ken-ichi Shimizu
Summary: In this study, operando spectroscopies were used to investigate the selective catalytic reduction of NO with NH3 over WO(3)-loaded CeO2. The reduction/oxidation half-cycles were elucidated through in situ Ce and W L-3-edge X-ray absorption near-edge structure, UV-vis, and infrared spectroscopies. The Ce4+ species were reduced by NO + NH3 to yield N-2 and Ce3+ species in the reduction half-cycle, which were then reoxidized by O-2 in the oxidation half-cycle. The oxidation state of the W(6+) species remained unchanged under redox conditions. IR and theoretical results suggested that the reduction half-cycle started with the reaction of W6+-OH and adjacent Ce(4+)-O with NO to afford Ce3+ species and gaseous HONO, which was then converted to NO+ species on the catalyst. The NO+ species reacted with NH3 to generate N-2.
Article
Chemistry, Physical
Yan Wang, Tong Shi, Qi-Yuan Fan, Yang Liu, Aiai Zhang, Zhaoqiang Li, Yanheng Hao, Lin Chen, Fenrong Liu, Xiaojun Gu, Shanghong Zeng
Summary: In this study, advanced spectroscopic and computational techniques were used to investigate the surface structure and reaction mechanism of tricomponent cerium-tungsten-titanium catalysts. The introduction of graphene oxide improved the dispersion of W and Ce species and resulted in specific bonding structures. The high dispersion of Ce facilitated the generation of oxygen vacancies, enhancing the adsorption and activation of NO and NH3. Experimental and theoretical evidence supported the feasibility of adsorption at low temperatures and revealed the reaction intermediates and interactions. The findings are important for understanding catalyst performance and developing new catalysts.
Article
Engineering, Environmental
Yun Shi, Jiali Pu, Liwei Gao, Shengdao Shan
Summary: Selective catalytic reduction (SCR) using NH3 and CH4 over InCeOx/HBEA catalysts exhibited high activity and nearly 100% NOx conversion in the temperature range of 250 to 600 degrees Celsius. The catalyst also showed good tolerance to CO2, H2O, and SO2. These findings indicate In8CeOx/HBEA as a promising catalyst for NOx removal from natural gas fueled engines.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Yusuke Inomata, Shinichi Hata, Eiji Kiyonaga, Keiichiro Morita, Kazuhiro Yoshida, Masatake Haruta, Toru Murayama
Summary: Vanadium oxide catalysts synthesized using carboxylic acid have a large surface area, contributing to their low-temperature NH3-SCR activity.
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
Environmental Sciences
Lei Yi, Jinke Xie, Caiting Li, Jian Shan, Yingyun Liu, Junwen Lv, Mi Li, Lei Gao
Summary: A battery of LaOx modified MnOx activated carbon catalysts were prepared for simultaneous abatement of NO and Hg-0, with 15%LaMn/BAC exhibiting excellent removal efficiency at 180 degrees C. The inhibitory effect of NH3 on Hg-0 removal was found to be greater than the accelerative effect of NO and O-2.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Lingkui Zhao, Lu Jiang, Yan Huang, Junfeng Zhang, Jun Tang, Caiting Li
Summary: The study demonstrated that partial substitution of La with Co in LaFeO3 can induce structural distortion, promote specific surface area, enhance active site exposure, and produce more reactive oxygen species, leading to significantly improved catalytic activities. Additionally, NO and toluene have mutual promotion effects in the reaction system, while the presence of H2O inhibits the oxidation of NO and toluene by consuming active oxygen atoms.
APPLIED SURFACE SCIENCE
(2022)
Review
Environmental Sciences
Ya Zhu, Yunbo Zhai, Shanhong Li, Xiangmin Liu, Bei Wang, Xiaoping Liu, Yuwei Fan, Haoran Shi, Caiting Li, Yun Zhu
Summary: This paper reviews methods for recovering different forms of phosphorus from solid products obtained from different sludge thermal treatment methods, as well as the bioavailability of the recovered phosphorus products. Incineration of sewage sludge is currently the most established and effective method for recovering phosphorus, while one wet chemical method has been commercialized and is expected to be further developed for industrial applications in the future. Pyrolysis and hydrothermal carbonization still have research gaps, but both have the potential to recover phosphorus and should be further explored based on their principles and laboratory performance.
Article
Energy & Fuels
Lei Gao, Lei Yi, Jiajie Wang, Xiangyi Li, Zhi Feng, Jian Shan, Yingyun Liu, Wenfa Tan, Qiuhua He, Caiting Li
Summary: This study presents a facile strategy for designing novel carbon-based catalysts for efficient removal of HCHO, combining hierarchical porous carriers and promotional effects to enhance catalytic performance.
Article
Chemistry, Physical
Caixia Liang, Caiting Li, Youcai Zhu, Xueyu Du, Yifu Zeng, Yihui Zhou, Jungang Zhao, Shanhong Li, Xuan Liu, Qi Yu, Yunbo Zhai
Summary: This study investigated the removal of toluene pollution using CuO/TiO2 composites. The composites synthesized by the wet precipitation method showed better performance and durability, with higher light absorption and lower charge recombination. Under ultraviolet-visible light, the light-driven heat significantly increased the removal efficiency, and the addition of infrared light further improved the efficiency. The reduction of carbon deposition greatly improved the photocatalytic performance and stability of the materials.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Inorganic & Nuclear
Qi Yu, Caiting Li, Dengsheng Ma, Jungang Zhao, Xuan Liu, Caixia Liang, Youcai Zhu, Ziang Zhang, Kuang Yang
Summary: This paper reviews the recent advances of layered double hydroxides (LDHs)-based materials for the abatement of volatile organic compounds (VOCs), mainly focusing on photocatalytic oxidation and thermal catalytic oxidation. The catalytic performance and intensified mechanisms of various LDHs-based materials are summarized and compared, with a focus on the mechanistic details that lead to varying results. The effect of different gas components on the performance of LDHs-based materials is examined, and the applications of LDHs-based materials for VOCs adsorption, sensing, and steam reforming are discussed. Finally, the current challenges and development strategies for practical applications are outlined.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Thermodynamics
Xiangmin Liu, Yuwei Fan, Yunbo Zhai, Xiaoping Liu, Zhexian Wang, Ya Zhu, Haoran Shi, Caiting Li, Yun Zhu
Summary: This study conducted co-hydrothermal carbonization of rape straw and microalgae to obtain clean hydrochar. The effect of different feedwater pH values on co-HTC and the mechanism of enhanced N, S, and O removal were revealed. Acidic and alkaline conditions in the feedwater exacerbated the carbonization process. The hydrochar formed under acidic conditions had a higher heating value and deamination and deoxidation were the main methods for protein degradation and N, S, and O removal. The results provide insights into the production of hydrochar with improved properties.
Article
Energy & Fuels
Jie Zhang, Caiting Li, Xueyu Du, Shanhong Li, Le Huang
Summary: Recycled desulfurized activated coke can effectively recover Hg0 from coal-fired flue gas with superior removal performance. The generation of surface active oxygen species on activated coke after thermal treatment can enhance the adsorption of Hg0. The deposition of SO42-, oxygen addition, and specific surface area play important roles in the removal of Hg0 by activated coke during regeneration.
Review
Chemistry, Multidisciplinary
Jungang Zhao, Caiting Li, Xueyu Du, Youcai Zhu, Shanhong Li, Xuan Liu, Caixia Liang, Qi Yu, Le Huang, Kuang Yang
Summary: Rapid industrialization has caused serious air pollution problems, highlighting the need for the development of detection and treatment technologies for efficient removal of harmful pollutants. Functional nanomaterials, specifically carbon dots (CDs), show great potential in sensing and photocatalytic technologies. CDs offer superior properties such as controllable structures, easy surface modification, adjustable energy band, and excellent electron-transfer capacities, making them an environmentally friendly and sustainable option for addressing environmental issues. This article highlights recent advances in CDs-based sensors and photocatalysts, discussing their applications in air pollutants detection and photocatalytic removal, as well as the diverse sensing and photocatalytic mechanisms of CDs. It emphasizes the importance of investigating synthetic mechanisms and designing structures.
Article
Chemistry, Multidisciplinary
Xiaoping Liu, Yunbo Zhai, Yun Zhu, Zhixiang Xu, Liming Liu, Wanying Ren, Yu Xie, Caiting Li, Min Xu
Summary: By using natural deep eutectic solvents (NADESs) and low-temperature pretreatment, the dewaterability and resource recovery of waste-activated sludge (WAS) can be significantly improved.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Review
Engineering, Environmental
Ziang Zhang, Caiting Li, Xueyu Du, Youcai Zhu, Le Huang, Kuang Yang, Jungang Zhao, Caixia Liang, Qi Yu, Shanghong Li, Xuan Liu, Yunbo Zhai
Summary: The synergistic system of non-intense electric field incorporated in semiconductor catalysts has gained attention as an advanced method to enhance cryogenic catalytic activity and meet specific reaction requirements. However, the lack of a comprehensive review on the process and mechanism in this research field is addressed in this study. A critical discussion on the classification of exogenous electric field promoting catalysis is provided, along with the construction of a shared mechanism framework. Further research suggestions are also proposed to contribute to the development and commercialization of this technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xueyu Du, Caiting Li, Jie Zhang, Youcai Zhu, Caixia Liang, Le Huang, Kuang Yang, Chaoliang Yao, Ying Ma
Summary: In this paper, the authors investigated the removal of Hg-0 using modified AC samples with abundant active oxygen species (AOS). The results showed that the treatment with (NH4)2S2O8 increased the microporosity and oxygen-containing functional groups, providing more anchoring sites for the dispersion of MnOx-FeOx. The optimized MnFe/NAC exhibited excellent efficiency for Hg-0 removal, as well as simultaneous removal of Hg-0 and NO.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Jungang Zhao, Caiting Li, Qi Yu, Youcai Zhu, Xuan Liu, Shanhong Li, Caixia Liang, Ying Zhang, Le Huang, Kuang Yang, Ziang Zhang, Yunbo Zhai
Summary: Mn3O4/Co3O4 composites with S-scheme heterojunctions were fabricated for photothermal catalytic degradation of toluene under UV-Vis light irradiation. The hetero-interface of Mn3O4/Co3O4 effectively increases the specific surface area and promotes the generation of reactive oxygen species. The presence of a built-in electric field and energy band bending optimizes the photogenerated carriers' transfer path and enhances the removal efficiency of toluene.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Youcai Zhu, Caiting Li, Xuan Liu, Ying Zhang, Kuang Yang, Le Huang, Jungang Zhao, Ziang Zhang
Summary: CoCeOx nanoparticles with different Co/Ce molar ratios were prepared and applied to toluene oxidation. The Co-doped CeO2 improved the catalytic activity through interfacial synergistic effects. CoCeOx-2-NP exhibited the highest toluene conversion activity and CO2 selectivity. Various characterizations were performed to analyze the relationship between the catalysts' structure and performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Xiangmin Liu, Yunbo Zhai, Shanhong Li, Qiuya Niu, Xiaoping Liu, Zhexian Wang, Yali Liu, Zhenzi Qiu, Caiting Li, Yun Zhu, Min Xu
Summary: This study investigates the properties and conversion processes of petrochemical sludge under different hydrothermal carbonization temperatures. The results show that higher temperatures lead to higher organic-dissolved oil content and lower water-soluble oil content. Carbon is mainly preserved in hydrochar and organic-dissolved oil, while nitrogen and sulfur are removed through migration into water-soluble oil.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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)
