Article
Multidisciplinary Sciences
A. G. Ramu, Dongjin Choi
Summary: Azo dyes and nitrophenols are widely used in industries but are highly toxic to aquatic organisms. In this study, a low-cost PdO-doped NiO hetero-mixture was synthesized and found to have excellent catalytic activity, high reduction rates, and stable performance in reducing toxic azo compounds. The PdO-NiO catalyst could be a promising solution for the degradation of azo compounds in the environment.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Hao Wang, Yi Zhang, Yali Zhang, Yunqing Li, Xiaoning Wang, Huifang Wang, Winston Duo Wu, Xiaoguang Bao, Zhangxiong Wu
Summary: This study proposes an aerosol drying impregnation method for the rapid and scalable synthesis of silica-supported bimetallic nanoparticles with homogeneous alloying. The method allows for control over the composition and size of the nanoparticles and avoids the use of expensive metal salts and complicated experimental procedures. The supported PdNi nanoparticles exhibit high activity and selectivity in the catalytic semihydrogenation of phenylacetylene.
Article
Chemistry, Multidisciplinary
Fei Wu, Yueying Wang, Shunxin Fei, Gang Zhu
Summary: In this study, a series of CoxNiy (x + y = 6) bimetallic catalysts were successfully prepared and the promotion effect of Co on the catalytic olefin hydrogenation reactions was investigated. The results showed that bimetallic catalysts generally exhibited superior catalytic performance compared to pure metals, and Co3Ni3 exhibited the highest catalytic activity in the hydrogenation of cyclohexene. The improvement of catalytic activity and stability was attributed to the charge transfer from Co to Ni and the refinement of CoNi grains through alloying. Therefore, tuning the metal/metal atomic ratio of bimetals could potentially enhance the catalytic performance.
Article
Chemistry, Physical
Karen S. Arias, Lichen Liu, Andrea Garcia-Ortiz, Maria J. Climent, Patricia Concepcion, Sara Iborra, Avelino Corma
Summary: Bimetallic CuFe nanoparticles covered by thin carbon layers have been developed as a potential substitute for noble metal catalysts for the chemoselective hydrogenation of HMF to BHMF. The spatial distribution of Cu and Fe in CuFe@C nanoparticles depends on the Cu/Fe ratio, and an optimized ratio has been found for the hydrogenation reaction. The presence of small Cu nanoparticles supported on Fe nanoparticles is proposed to be the key active sites for the catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Komal N. Patil, P. Manikanta, Puneethkumar M. Srinivasappa, Arvind H. Jadhav, Bhari Mallanna Nagaraja
Summary: In this study, Ni nanoparticles were anchored and confined in open end CNTs to obtain Ni@OCNT catalyst with enhanced catalytic performance for the selective hydrogenation of CAL. The catalyst showed high conversion, selectivity, and yield towards the desired product HCAL. It also exhibited excellent stability and reduced formation of by-products, resulting in minimal waste generation. The reaction conditions were moderate, reducing energy usage, and the interaction between metal nanoparticles and CNTs minimized the leaching of metal and potential environmental hazards. Overall, this study highlights the importance of utilizing confined space and high surface area of CNTs for improved catalytic performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jiajuan Li, Zizhu Wang, Yirui Ma, Caiyun Xu, Shenghu Zhou
Summary: In this study, mesoporous silica SBA-16-supported NiCo bimetallic nanocatalysts were synthesized and confirmed through various characterization techniques. The synthesized NiCo/SBA-16 showed enhanced catalytic performance for the hydrogenation of nitroaromatics. The improved catalytic performance was attributed to the formation of NiCo bimetallic nanostructures, where the synergistic effect between Ni and Co enhanced their catalytic activities.
Article
Chemistry, Physical
Byeongju Song, Iljun Chung, Jeongmyeong Kim, Minji Yun, Yongju Yun
Summary: Capping agents play a crucial role in the colloidal synthesis of nanoparticles with controlled size and shape for catalysis. This study investigates the effect of residual capping agents on the performance of Pt/Al2O3 catalysts for the hydrogenation of acetophenone. The results demonstrate that partially exposed metal sites and steric hindrance with the aromatic ring of acetophenone contribute to the enhanced activity and selectivity of the catalysts.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Qichen Wang, Mingyi Wang, Xuehao Li, Peng Liu, Chuanmin Ding, Lian Wang, Junwen Wang, Kan Zhang, Ping Liu
Summary: In this study, Ni-Fe/AC catalysts were prepared with different proportions of Ni-Fe loading for vapor phase carbonylation of ethanol to produce propionic acid. The introduction of Fe into Ni/AC formed a Ni-Fe alloy, which inhibited the sintering of the metal and improved the dispersibility of the metal particles. The synergy between Ni and Fe reduced the reduction temperature of NiO and increased the content of active centers Ni-0 on the catalyst surface. The 1Ni-1Fe/AC catalyst exhibited the highest catalytic performance, with an increase in the co-selectivity of propionic acid and ethyl propionate by 11% and a doubled space-time yield compared to the Ni/AC catalyst.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Organic
Haitao Tian, Wenxuan Xue, Jingtao Wu, Ziguang Yang, Hongcheng Lu, Conghui Tang
Summary: A novel and highly-efficient N-heterocycle assembly methodology has been developed using a cobalt-N,N-bidentate complex as a catalyst. The cobalt complex, which is phosphine-free and easily-prepared, enables the synthesis of various N-heterocycles from readily available alcohols and amines through acceptorless dehydrogenation. The generality and practicability of this catalytic system are demonstrated by obtaining all N-heterocycles under nearly identical reaction conditions.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Hui-Ju Chen, Chien-Cheng Chiu, Tsui Wang, Dong-Sheng Lee, Ta-Jung Lu
Summary: The bis-NHC-Ag/Pd(OAc)(2) catalytic system is an intelligent catalyst that can efficiently reduce various functional groups to good to excellent yields, with high selectivity for different functional groups. In addition, the system can achieve stereoselective transformation of alkynes to alkenes in aqueous media, providing a simple operational protocol for reducing functional groups.
Review
Chemistry, Physical
Wasim U. Khan, Luqmanulhakim Baharudin, Jungkyu Choi, Alex C. K. Yip
Summary: Recent attention has been focused on converting carbon monoxide and hydrogen into higher alcohols, with efforts to improve catalysts for higher alcohol synthesis. The role of bimetallic catalysts with two active sites in promoting higher alcohol synthesis has been a recent focus. The recent development in bimetallic catalyst preparation and investigations into the reaction mechanism in CO hydrogenation have been reviewed.
Article
Chemistry, Physical
Zainulla M. Muldakhmetov, Aigul T. Ordabaeva, Majit G. Meiramov, Arstan M. Gazaliev, Sergey V. Kim
Summary: The catalytic activity of binary composite catalysts Fe2O3-CoO/CaA and Fe2O3-CoO/ZSM-5 were studied. The catalysts were obtained by impregnation of CaA and ZSM-5 zeolites with aqueous solutions of iron and cobalt sulfates. The phase composition of the catalysts was determined by X-ray diffraction analysis, and the surface morphology and elemental composition were investigated using electron microscopy and energy dispersive spectroscopy. The catalytic properties were evaluated through the hydrogenation of anthracene, and it was found that the obtained catalysts had slightly inferior activity compared to platinum and rhodium catalysts.
Article
Chemistry, Multidisciplinary
Priyanka Verma, Matthew E. Potter, Alice E. Oakley, Panashe M. Mhembere, Robert Raja
Summary: In this study, PdAu bimetallic nanostructures supported on hierarchically porous silicoaluminophosphates (SAPOs) show significantly enhanced catalytic activities, highlighting the benefits of introducing hierarchical porosity in the SAPO support matrix.
Article
Chemistry, Multidisciplinary
Neha Choudhary, Viresh Kumar, Shaikh M. Mobin
Summary: This study demonstrates the use of bimetallic CoNi nanoflowers as catalysts for the hydrogenation of terminal alkynes, showing high conversion and recyclability. Various analytical techniques were used to analyze the structure and morphology, proposing a transfer hydrogenation mechanism involving diimide formation.
Article
Polymer Science
Cheng Tang, Wenwen Yang, Zhijuan Zou, Fang Liao, Chunmei Zeng, Kunpeng Song
Summary: In this study, a facile and eco-friendly in situ assembly technique was used to produce a PdFe bimetallic hyper-crosslinked polymer catalyst for the Ullmann reaction. The catalyst exhibited a hierarchical pore structure, high specific surface area, and uniform distribution of active sites, which resulted in high catalytic activity and stability. The exceptional catalytic performance of the catalyst was attributed to its robust absorption capability, high dispersion, and strong interaction between Fe and Pd.
Article
Chemistry, Physical
Chenliang Ye, Mao Peng, Tingting Cui, Xinxin Tang, Dingsheng Wang, Miaolun Jiao, Jeffrey T. Miller, Yadong Li
Summary: Characterizing the surface structure of metal nanoparticles is challenging, but important for understanding their functionality. This study proposes a stepwise reduction-oxidation approach to determine the surface atomic arrangement of noble metal nanoparticles, and successfully applies it to Pt and Pd nanoparticles. It also characterizes the surface structure of a Pd-Sb bimetallic catalyst, demonstrating its potential in propane dehydrogenation.
Article
Chemistry, Multidisciplinary
Zhiwei Wang, Wenlong Wang, Jin Wang, Dingsheng Wang, Milan Liu, Qianyuan Wu, Hongying Hu
Summary: This study demonstrates a regulatory mechanism based on the electron filling and orbital energies of metal active centers and provides a rational catalyst design strategy for achieving ultrahigh H2O2-decomposition activity. Among the investigated platinum-group-metal active centers, Ir-N-4 with partially occupied d(x2-y2) and d(xz) orbitals and the highest d-band center shows the strongest interaction with H2O2 and the lowest energy barrier for its decomposition. The single-atom Ir catalyst (Ir-NC) exhibits an ultrahigh H2O2-decomposition capacity, which is 1614 times higher than that of natural catalase, and surface-adsorbed atomic oxygen is identified as the key intermediate for O2 generation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhenhui Liu, Yue Du, Ruohan Yu, Mingbo Zheng, Rui Hu, Jingsong Wu, Yongyao Xia, Zechao Zhuang, Dingsheng Wang
Summary: A nanoscale grade-separation strategy using ordered three-dimensional interconnected sub-5 nm pores is proposed to solve the blockage issue caused by fast generation of H-2 nanobubbles at atomic-scale interfaces. The results show that the 3d criss-crossing mesopores allow efficient diffusion of H-2 bubbles, and the addition of ultrafine ruthenium (Ru) further enhances the catalyst performance. This work provides a potential route for fine-tuning mass transport during water electrolysis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Zedong Zhang, Jiexin Zhu, Shenghua Chen, Wenming Sun, Dingsheng Wang
Summary: Downsizing the active center of the main group element gallium to the atomic level enables efficient CO2 reduction with high selectivity and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Zechao Zhuang, Lixue Xia, Jiazhao Huang, Peng Zhu, Yong Li, Chenliang Ye, Minggang Xia, Ruohan Yu, Zhiquan Lang, Jiexin Zhu, Lirong Zheng, Yu Wang, Tianyou Zhai, Yan Zhao, Shiqiang Wei, Jun Li, Dingsheng Wang, Yadong Li
Summary: This study successfully surpasses the activity limit of single-atom catalysts (SACs) by utilizing n-type semiconductor supports for p-type SACs and discovers that the activity of supported SACs can be continuously tuned through rectification strategy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Yongjun Ji, Shaomian Liu, Shaojia Song, Wenqing Xu, Liang Li, Yu Zhang, Wenxing Chen, Huifang Li, Jingang Jiang, Tingyu Zhu, Zhenxing Li, Ziyi Zhong, Dingsheng Wang, Guangwen Xu, Fabing Su
Summary: This study reports a novel Pt catalyst for CO-SCR, which consists of negatively charged single-atom Pt embedded on CuO squares supported on CoAlO nanosheets. This catalyst showed excellent performance in terms of NO conversion, N-2 selectivity, and tolerance toward SO2 poisoning, owing to the unique structure and electronic properties.
Article
Chemistry, Physical
Lilong Zhang, Ge Meng, Wei Zhang, Xiaoxian Li, Zedong Zhang, Mingde Yang, Yulong Wu, Dingsheng Wang, Yadong Li
Summary: A composite dual-site Ru single-atom/Ru nanoparticle catalyst was designed to efficiently catalyze the hydrogenation of levulinic acid (LA) and the oxidation of 5-hydroxymethyl furfural (HMF) in a specific solvent system, enabling easy separation of the products. This opens up new possibilities for the design of dual-site catalysts to promote the oriented conversion of complex substrates and facilitate product separation.
Article
Materials Science, Multidisciplinary
Chenliang Ye, Mao Peng, Yang Li, Dingsheng Wang, Chen Chen, Yadong Li
Summary: In this study, a PtSnZn/Al2O3 catalyst was synthesized using a stepwise method and showed excellent catalytic performance in propane dehydrogenation. Experimental and theoretical results revealed that the structure of PtSnZn clusters and the metal pairings play a crucial role in the catalytic performance.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ge Meng, Wu Lan, Lilong Zhang, Shibin Wang, Tanhao Zhang, Shuo Zhang, Ming Xu, Yu Wang, Jian Zhang, Fengxia Yue, Yulong Wu, Dingsheng Wang
Summary: A synergistic catalyst (Mo1Al/MgO) combining atomically dispersed Mo centers and Al Lewis acid sites on a MgO substrate was designed for the depolymerization of Eucalyptus lignin. The Mo1Al/MgO achieved a near-theoretical monophenol yield of 46% and a high selectivity of 92% for coniferyl and sinapyl methyl ether, with good cycling durability, in an inert N-2 atmosphere. This study confirms the feasibility of designing better-performing catalysts with synergistic multiactive sites for the efficient and selective disassembly of complex renewable biopolymers into highly value-added products with lower cost and greater security.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zedong Zhang, Shenghua Chen, Jiexin Zhu, Chenliang Ye, Yu Mao, Bingqing Wang, Gang Zhou, Liqiang Mai, Ziyun Wang, Xiangwen Liu, Dingsheng Wang
Summary: In this work, a Pd delta--Cu3N catalyst containing charge-separated Pd delta--Cu delta+ atom pair is designed to stabilize the Cu delta+ sites and promote the CO dimerization process. The achieved 14-fold increase in C2 product Faradaic efficiency demonstrates the effectiveness of this strategy for enhancing CO2 RR.
Article
Chemistry, Multidisciplinary
Honghui Ou, Yuping Qian, Lintian Yuan, He Li, Ludan Zhang, Shenghua Chen, Min Zhou, Guidong Yang, Dingsheng Wang, Yuguang Wang
Summary: By adjusting the spatial position of a single-atom site on the nanoplatforms, the enzyme activity can be significantly improved, promoting photoinduced electron migration and O2 activation, resulting in the generation of reactive oxygen species (ROS) and achieving the same antibacterial effect as antibiotics.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Runze Li, Jie Zhao, Baozhong Liu, Dingsheng Wang
Summary: This review discusses the influence of atomic distance on the performance of metal catalysts. It summarizes the strategies for changing the atomic distance and their effects on catalytic reactivity. The bond length between metal and coordination atom, the distance between single-atom sites, and the arrangement spacing of metal atoms are all factors that affect catalytic performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hai-Tao Tang, He-Yang Zhou, Ying-Ming Pan, Jia-Lan Zhang, Fei-Hu Cui, Wen-Hao Li, Dingsheng Wang
Summary: This study demonstrates the use of a single-atom catalyst, Mn-SA@NC, to drive the oxygen evolution reaction (OER) and enable efficient silane oxidation. The synthesis approach presents a promising avenue for utilizing electrocatalytic OER and highlights the potential of single-atom catalysts as attractive platforms for organic electrosynthesis investigations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiarui Yang, Chenxi Zhu, Chang-Jie Yang, Wen-Hao Li, He-Yang Zhou, Shengdong Tan, Xiangwen Liu, Daping He, Dingsheng Wang
Summary: The design of catalysts in the field of electrocatalysis has received a lot of attention. A metallic compound supported by carbon nanotube was designed based on the interaction between different metal species. Among these compounds, R-RhFeP2CX-CNT was found to be beneficial for the hydrogen evolution reaction due to its rich-electron environment. R-RhFeP2CX-CNT exhibited a small overpotential and high mass activity, making it a potential alternative catalyst for practical production.
Article
Chemistry, Multidisciplinary
Qi Kang, Zechao Zhuang, Yijie Liu, Zhenhui Liu, Yong Li, Bin Sun, Fei Pei, Han Zhu, Hongfei Li, Pengli Li, Ying Lin, Kunming Shi, Yingke Zhu, Jie Chen, Chaoqun Shi, Yan Zhao, Pingkai Jiang, Yongyao Xia, Dingsheng Wang, Xingyi Huang
Summary: This study proposes a design method for fiber patterned gel polymer electrolytes with high ionic conductivity and superior mechanical toughness for durable and safe solid-state lithium metal batteries. The special patterned structure provides fast lithium ion transport channels and tailors the solvation structure, enabling uniform lithium ion flux, enhancing stability against lithium anodes, and achieving ultralong lithium plating/stripping.
ADVANCED MATERIALS
(2023)
