Article
Chemistry, Multidisciplinary
Liqiong Liu, Weiliang Han, Fang Dong, Hua Feng, Zhicheng Tang
Summary: Two mesoporous catalysts were constructed for the catalytic combustion of propane, and it was found that the framework-confined Pt/Ti0.1AlOy-EISA catalyst showed better catalytic activity and thermal stability compared to the pore-confined Pt/Ti0.1AlOy-VI catalyst. The framework-confined catalyst had higher Pt dispersion, while the pore-confined catalyst exhibited better water and sulfur resistance due to the protection provided by the pores. In situ DRIFTS experiments suggested the Langmuir Hinshelwood (L-H) mechanism as the possible reaction mechanism.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Mahdi Ghamsari, Nafiseh Fahimi-Kashani, Mohammad Reza Hormozi-Nezhad
Summary: Engineering interparticle plasmon coupling through controlling the assembly of plasmonic nanoparticles on the surface of sacrificial substrates shows great potential for selective and sensitive detection of specific analytes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Xiaoyang Huang, Ouardia Akdim, Mark Douthwaite, Kai Wang, Liang Zhao, Richard J. Lewis, Samuel Pattisson, Isaac T. Daniel, Peter J. Miedziak, Greg Shaw, David J. Morgan, Sultan M. Althahban, Thomas E. Davies, Qian He, Fei Wang, Jile Fu, Donald Bethell, Steven McIntosh, Christopher J. Kiely, Graham J. Hutchings
Summary: This study demonstrates that the reaction rate can be almost doubled by separating the gold and palladium components in bimetallic carbon-supported catalysts. The enhancement is attributed to the coupling of separate redox processes occurring at isolated gold and palladium sites.
Article
Chemistry, Applied
Onur Bulut, M. Deniz Yilmaz
Summary: This study evaluated the catalytic activity of biocompatible chitosan-stabilized gold nanoparticles on the oxidation reaction, demonstrating high efficiency and long-term stability with low toxicity to cells. The nanoparticles showed positive correlation with concentrations of catalyst and oxidant, while negative correlation with substrate concentration. The results suggest the potential of CH-AuNPs as effective and reusable nanocatalysts for oxidation reactions.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Physical
Luong Xuan Dien, Toru Murayama, Nguyen Tuan Hung, Quang Duc Truong, Huynh Dang Chinh, Masamichi Yoshimura, Masatake Haruta, Tamao Ishida
Summary: Gold nanoparticles supported on titania catalysts were prepared using the solid grinding method, and the catalytic activity was improved by treatment with potassium tert-butoxide. The catalyst exhibited high catalytic activity and stability for CO oxidation.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Chao Sun, Guangfeng Wei, Huimin Liu, Zhen Huang, Feng Qin, Haitao Wang, Jing Zhao, Zhipan Liu, Linjuan Zhang, Haisheng Yu, Binghui Ge, Wei Shen, Hualong Xu
Summary: A TiO2-Pt-1-CeO2 ensemble with unprecedented reactivity was constructed using the phase junction confinement principle, enabling high efficiency in CO oxidation through weakened CO affinity, enhanced surface lattice oxygen reactivity, and lowered reaction barrier. This work demonstrates a plausible synthesis philosophy and reaction mechanism for SACs, creating a new frontier in reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Soichiro Okada, Yoshio Nakahara, Mitsuru Watanabe, Toshiyuki Tamai, Yasuyuki Kobayashi, Setsuko Yajima
Summary: This study reports a novel method to fabricate porous Pd structures by coalescing Pd nanoparticles at room temperature and pre-activating them with KOH, leading to increased catalytic activities.
Article
Chemistry, Physical
Wenjie Zhang, Huimin Kong, Zhennan Wu, Qaofeng Yao, Linan Wang, Liang Quo, Yanjie He, Xiaoguang Qiao, Xinchang Pang, Jianping Xie
Summary: The controlled synthesis of ultrasmall metal nanocluster (NC) assemblies with a specific size and number of NCs can be achieved using star-like diblock copolymer unimolecular micelles as a scaffold. The length of the P4VP block in the polymers can be adjusted to control the size of the NC assemblies. Thiolate ligands play a crucial role in determining the size of individual nanoclusters and enhancing the stability of the NC assemblies, which have promising applications in catalysis, optics, and biomedicine.
CHEMISTRY OF MATERIALS
(2021)
Article
Multidisciplinary Sciences
Jinxing Chen, Qian Ma, Minghua Li, Daiyong Chao, Liang Huang, Weiwei Wu, Youxing Fang, Shaojun Dong
Summary: Gold nanoparticles exhibit enzyme-like activities and can mimic the catalytic process of glucose oxidation enzyme, producing H2O2; other noble metal nanoparticles can also catalyze glucose oxidation reaction, where oxygen is preferably reduced to water.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Analytical
Xiang-Yu Xiao, Zong-Yin Song, Pei-Hua Li, Shi-Hua Chen, Li-Na Li, Meng Yang, Chu-Hong Lin, Xing-Jiu Huang
Summary: The study successfully stabilizes Au-25 nanoclusters on Fe2O3 nanoplates, forming Au-25/OV-Fe2O3 with superhigh electrochemical reduction catalytic activity, breaking sensitivity records and offering promising applications in the analysis of organic and bioactive substances. The Au-Fe bond and S atoms in Au-25 nanoclusters play important roles in the reduction of As(III). The fantastic stability and catalytic ability of Au-25/OV-Fe2O3 provide guidelines for stabilizing Au nanoclusters on metal oxides.
ANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Nicholas Langer, Mason LeGrand, Ofer Kedem
Summary: It has been found that cationic polyelectrolyte coatings can increase the catalytic activity of partially embedded gold nanoislands towards transfer hydrogenation and oxidation reactions with anionic substrates compared to uncoated ones. The potential steric hindrance caused by the coating is countered by a decrease in the activation energy of the reaction by half, resulting in overall enhancement. Direct comparison to uncoated nanoparticles isolates the role of the coating and provides conclusive evidence of enhancement.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Xiaoxia Zhou, Heng Zhang, Yuanyuan Sun, Zhe Gao, Hangrong Chen
Summary: A facile self-assembly strategy was developed to synthesize Pt@TS-1 catalyst with ultra-low Pt loading, which exhibits super catalytic activity and stability in CO conversion and soot oxidation. The confinement effect of zeolite leads to rich and smaller Pt nanoparticles, contributing to excellent CO conversion. The Pt@TS-1 catalyst also shows good resistance to water and sulfur, suggesting its potential for industrial applications.
Article
Engineering, Environmental
Wei Liu, Weilong Liao, Yang Ning, Xianming Zheng, Yu Ji, Zhao Dai, Zhaohui Meng, Jingwen Zhang, Junfu Wei, Huan Zhang
Summary: A novel composite fiber membrane (Au/mPVB) is proposed for continuous removal of low-concentration formaldehyde gas in indoor environments at room temperature. The Au/mPVB possesses a microreactor-like structure with a homogeneous macroporous fiber and uniform loading of Au NPs on the inner wall. The mPVB fiber can adsorb formaldehyde through amino groups and the catalytic performance is effectively improved. In performance tests, 1 wt% Au/mPVB exhibited a high removal efficiency of 97.5% for 0.8 ppm formaldehyde, 25% higher than mPVB, and maintained catalytic activity after continuous formaldehyde-releasing experiment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Guanghui Sun, Fang Wang, Yuekang Jin, Xuanye Chen, Peng Chai, Longxia Wu, Bo-Tao Teng, Weixin Huang
Summary: Research has shown that molecularly adsorbed oxygen species on Au(997) surface can efficiently catalyze the oxidative coupling of methanol with oxygen at low temperatures, resulting in the production of methyl formate and dioxymethylene. This novel reaction mechanism involving molecularly adsorbed O-2 species differs from the traditional mechanism which relies on surface atomic oxygen species, demonstrating the unique reactivity of O-2 species on Au surfaces for low-temperature oxidation reactions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Applied
Parimal Pandit, Pranita Rananaware, Aviva D'Souza, Mahaveer D. Kurkuri, Varsha Brahmkhatri
Summary: Diatoms are unicellular photosynthetic algae found in all water territories, with potential applications in catalysis, drug delivery systems, adsorbents, and bio-photonics. Functionalized diatoms with thiol groups and decorated with silver or gold nanoparticles were synthesized for oxidation reactions and environmental applications
JOURNAL OF POROUS MATERIALS
(2022)
Article
Chemistry, Physical
Nan Lu, Xiaoqing Yan, Hisayoshi Kobayashi, Wen Liu, Shuang Chen, Shipan Liang, Jiemei Zhang, Renhong Li
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Multidisciplinary
Renhong Li, Zhiqi Liu, Quang Thang Trinh, Ziqiang Miao, Shuang Chen, Kaicheng Qian, Roong Jien Wong, Shibo Xi, Yong Yan, Armando Borgna, Shipan Liang, Tong Wei, Yihu Dai, Peng Wang, Yu Tang, Xiaoqing Yan, Tej S. Choksi, Wen Liu
Summary: In the study of strong metal-support interaction (SMSI) between noble metal and 2D TiB2 supports, direct evidence of encapsulating metal nanoparticles with TiB2 overlayers to form sintering-resistant core-shell structures is reported. This newly created TiB2-based SMSI promotes catalytic activity and stability simultaneously, optimizing hydrogen production and selectivity. The theoretical and experimental results suggest that the interaction between transition metals and TiB2 overlayers plays a crucial role in creating thermally stable and catalytically active metal/support interfaces for scalable chemical and energy applications.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kaicheng Qian, Yong Yan, Shibo Xi, Tong Wei, Yihu Dai, Xiaoqing Yan, Hisayoshi Kobayashi, Sheng Wang, Wen Liu, Renhong Li
Summary: Lattice strain modulation and vacancy engineering were found to be effective in controlling the catalytic properties of Co@CoO heterointerface catalysts. The bifunctional nature of oxygen-vacancy-rich Co-CoO interfaces was elucidated, with Co and CoO sites responsible for different catalytic reactions. The study also demonstrated that the sample reduced at 350 degrees C, Co@CoO-350, exhibited optimal catalytic activity with the highest turnover frequency for the aqueous phase reforming of formaldehyde to produce hydrogen.
Article
Chemistry, Multidisciplinary
Xiangbowen Du, Tong Wei, Mingwu Tan, Hisayoshi Kobayashi, Zhengxin Peng, Hongliang Zhu, Zhikang Jin, Junjie Song, Wen Liu, Renhong Li
Summary: This study demonstrates the efficient upgrading of formaldehyde to formate using a trimetallic carbide catalyst, without the generation of CO2 or O-2. The catalyst, Co3Fe3W6C, shows high stability and enables a significant boost in the energy efficiency of electrochemical H-2 production from water. The results provide a new strategy for enhancing the cost competitiveness of green hydrogen production and the electrochemical upgrading of organic feedstocks.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Nan Lu, Xiaoqing Yan, Hui Ling Tan, Hisayoshi Kobayashi, Xuehan Yu, Yuezhou Li, Jiemei Zhang, Zhengxin Peng, Jing Sui, Ziying Zhang, Wen Liu, Renhong Li, Benxia Li
Summary: We report an efficient process for dehydrogenating formaldehyde in alkaline solution using carbon nanotubes as catalysts with the involvement of molecular O-2 in a unique reaction mechanism. The superior catalytic performance of carbon nanotubes is attributed to their sp(2)-carbon-rich surface, hydrophilicity, and abundant surface defects, which serve as the most plausible active sites. The activation of adsorbed molecular oxygen on carbon nanotubes leading to peroxide species is found to be crucial for C-H activation and efficient hydrogen production. The cost-effective carbon-based dehydrogenation catalysts provide new opportunities for the development of novel liquid organic hydrogen carrier technologies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Xiangbowen Du, Mingwu Tan, Tong Wei, Hisayoshi Kobayashi, Junjie Song, Zhengxin Peng, Hongliang Zhu, Zhikang Jin, Renhong Li, Wen Liu
Summary: In this study, a bifunctional catalyst based on NiFe2O4 spinel was used to couple the hydrogen evolution reaction (HER) with selective methanol oxidation reaction (SMOR) for formate production. The results showed that the system exhibited high current density and Faradaic efficiencies, as well as excellent stability during continuous operation. Mechanistic investigation revealed the CO-free pathway for the SMOR reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Huang Ming-Hao, Li Zhuo, Du Lei-Lei, Jin Zhi-Kang, Li Ren-Hong
Summary: The composite catalyst of CuPd alloy nanoparticles supported on MgO (CuPd/MgO) showed excellent catalytic performance in formaldehyde reforming for hydrogen production at room temperature in the air. It exhibited a high turnover frequency (TOF) which was significantly higher than that of Cu/MgO and Pd/MgO under the same reaction conditions. The strong metal support interaction (SMSI) between CuPd alloy nanoparticles and MgO support was responsible for the enhanced catalytic activity.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jin Zhi-Kang, Wei Tong, Xu Chao, Jia Hong-Bo, Song Jun-Jie, Zhu Hong-Liang, Du Xiang-Bo-Wen, Peng Zheng-Xin, Wang Gang, Liu Jun, Ding Hong-Yun, He Fan, Wang Min, Li Ren-Hong
Summary: In this study, nanocrystalline cobalt boride (CoB) was synthesized using a simple calcination process and applied as a catalyst for the hydrolysis of ammonia borane solution at room temperature. The CoB catalyst exhibited high performance, surpassing platinum, and maintained excellent catalytic hydrogen production after multiple tests. The study also revealed the possible catalytic active site and the mechanism of synergistic catalytic hydrogen production.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Song Jun-Jie, Wei Tong, Xu Chao, Jia Hong-Bo, Liu Jun, Ding Hong-Yun, He Fan, Wang Min, Jin Zhi-Kang, Du Xiang-Bo-Wen, Wang Gang, Li Ren-Hong
Summary: TiB2 support and Co/TiB2 magnetic recyclable nano-catalyst were prepared for catalytic hydrogen evolution and synergistic degradation of pollutants. The catalyst showed excellent catalytic activity and recyclability without the need for external energy sources or additives.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Hongliang Zhu, Roong Jien Wong, Xiangbowen Du, Leilei Du, Zhikang Jin, KaiCheng Qian, Junjie Song, Renhong Li, Wen Liu
Summary: Low-cost and highly active PtNi alloy nanoparticles supported on TiB2 were found to exhibit a strong metal-support interaction (SMSI) and catalyze formic acid dehydrogenation at room temperature. The Pt3Ni8/TiB2 catalyst showed high catalytic activity and stability and may improve thermal stability and catalytic performance by partially replacing noble metals with magnetic Ni metal.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Physical
Xuehan Yu, Kaicheng Qian, Leilei Du, Jiemei Zhang, Nan Lu, Ziqiang Miao, Yuezhou Li, Hisayoshi Kobayashi, Xiaoqing Yan, Renhong Li
Summary: This study reports a strong Jahn-Teller distortion at Mn3O4-MnO heterointerfaces, which can regulate the electronic and lattice structures of the composite support, enhancing the catalytic activity of hydrogen production from formaldehyde.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Physical
Shuang Chen, Xueyan Pan, Leilei Du, Xiaoqing Yan, Sha Li, Renhong Li
Summary: Direct splitting of liquid organic fuels using a particulate catalyst is an effective way to produce hydrogen on a large scale. The Cu/MgO catalyst demonstrated exceptional turnover frequencies (TOF, 320.71 h(-1)) and improved stability under aerobic conditions in neutral media. This work provides opportunities for the efficient conversion of liquid organic fuels into hydrogen under ambient conditions.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Chemistry, Physical
Leilei Du, Gang Wang, Xiaoqing Yan, Hisayoshi Kobayashi, Sha Li, Renhong Li, Wenxing Chen
Summary: This study presents the catalytic activity of biomimetic polydopamine (PDA) nanoparticles for formaldehyde (HCHO) reforming into hydrogen (H-2) with O-2 acting as a co-catalyst. The catechol in PDA activates O-2 molecules to facilitate water dissociation and HCHO decomposition, leading to efficient H-2 production. This work contributes new insights into the design of organic catalysts for aqueous-phase hydrogen evolution reactions.
SUSTAINABLE ENERGY & FUELS
(2021)
Review
Chemistry, Physical
Tong Wei, Bo Liu, Lichao Jia, Renhong Li
Summary: Solid oxide fuel cells (SOFCs) are considered efficient green energy technology in the 21st century, but carbon deposition on Ni-based anodes is a common issue when hydrocarbons are used as fuel. On-cell reforming of hydrocarbons, also known as fuel pre reforming, is a promising solution for alleviating carbon deposition, by finding an efficient and stable fuel reforming catalyst such as perovskite oxides.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Zhu Xiao-Hui, Guo Zi-Wei, Liu Xiang-Dong, Li Ren-Hong, Wei Tong
Summary: Transition metal supported catalysts, especially Ag/MgO, showed high catalytic activity in degradation of azo dyes. The synergistic effect of reductive hydrogen radical and oxidizing superoxide radical assists in breaking down chromogenic group in dye molecules, enhancing the reaction efficiency. Using aldehyde promoter achieves the dual treatment of pollutants, demonstrating a potential method for pollutant degradation.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2021)