Article
Engineering, Environmental
Xingxu Lu, Wenxiang Tang, Meilin Li, Yanliu Dang, Norwyn Campbell, Zihao Li, Steven L. Suib, Pu-Xian Gao
Summary: Reducing the mass transfer resistance of catalyst is crucial for improving catalytic reaction kinetics and maximizing catalyst activity. Nanoarray catalysts have been developed as a promising alternative to washcoat catalysts, showing lower internal mass transfer resistance due to their high macroporosity and thin layers. This study contributes to understanding the enhanced mass transport properties of nanoarray monolithic catalysts through experimental measurements and theoretical modeling.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xinwei Chen, Liguo Wang, Chanjuan Zhang, Weixia Tu, Yan Cao, Peng He, Jiachen Li, Huiquan Li
Summary: In this study, the Cu-C@SiO2-R catalyst prepared by ammonia evaporation method showed excellent catalytic performance and stability in ethylene carbonate hydrogenation. The modification with graphite oxide helped maintain the stability of Cu particle size and copper valence balance, improving the catalytic activity of the catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Busha Assaba Fayisa, Yushan Xi, Youwei Yang, Yueqi Gao, Antai Li, Mei-Yan Wang, Jing Lv, Shouying Huang, Yue Wang, Xinbin Ma
Summary: In this study, a series of Pt-modulated Cu/SiO2 catalysts were fabricated and the optimal 0.2Pt-Cu/SiO2 catalyst exhibited the highest catalytic performance with high EC conversion, excellent selectivity to ethylene glycol and methanol, and good stability. The findings suggest that a proper amount of Pt can significantly improve the catalytic activity and stability of Cu-based catalysts in the hydrogenation of carbon-oxygen bonds.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Youwei Yang, Dawei Yao, Mengjiao Zhang, Antai Li, Yueqi Gao, Busha Assaba Fayisa, Mei-Yan Wang, Shouying Huang, Yue Wang, Xinbin Ma
Summary: A series of Mo-doped Cu/SiO2 catalysts were prepared and used for the hydrogenation of ethylene carbonate (EC), with the 0.5 wt% Mo-doped catalyst exhibiting the highest catalytic performance. The addition of Mo can enhance copper dispersion and prevent aggregation, leading to improved activation of EC. The insights gained from this study may help in designing more efficient copper-based catalysts for the hydrogenation of carbon-oxygen bonds.
Article
Engineering, Environmental
Kaixuan Fu, Yun Su, Lizhe Yang, Na Ji, Chunfeng Song, Degang Ma, Xuebin Lv, Rui Han, Qingling Liu
Summary: This study successfully improves the catalytic activity by coating MnO2 nanoarrays on honeycomb cordierite and loading Pt nanoparticles. It is found that increasing the dispersion of Pt further enhances the catalytic activity and exhibits good water-resistance stability. This work provides important theoretical and experimental basis for the construction and application of nanoarray structures in environmental engineering.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Youwei Yang, Jingyu Zhang, Yueqi Gao, Busha Assaba Fayisa, Antai Li, Shouying Huang, Jing Lv, Yue Wang, Xinbin Ma
Summary: In this study, a series of Ni-modified Cu/SiO2 catalysts were prepared to investigate the effects of different synthesis methods and Ni contents on catalytic performance under different H-2/EC molar ratios. The results showed that the addition of a small amount of Ni could enhance Cu dispersion and Cu+ species, as well as forming uniformly-dispersed CuNi alloy species to improve the adsorption and dissociation of H-2. However, excess Ni led to a drop in catalytic performance.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Runping Ye, Chong Zhang, Peng Zhang, Ling Lin, Long Huang, Yuanyuan Huang, Tianyou Li, Zhangfeng Zhou, Rongbin Zhang, Gang Feng, Yuan-Gen Yao
Summary: β-cyclodextrin (β-CD) was utilized to prepare copper-based catalysts, which showed enhanced conversion, selectivity, and lifetime for the hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG).
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Gianfranco Giorgianni, Chalachew Mebrahtu, Siglinda Perathoner, Gabriele Centi, Salvatore Abate
Summary: Cu/SiO2 catalysts prepared by the deposition-decomposition (DD) method using ammonium hydroxide and pre-reduced in pure hydrogen show improved ethylene glycol (EG) yields and stability.
Article
Chemistry, Physical
Tongyang Song, Yuanyuan Qi, Aiping Jia, Na Ta, Jiqing Lu, Peng Wu, Xiaohong Li
Summary: In this study, a MoOx-promoted Cu/SiO2 catalyst prepared via a modified hydrothermal method exhibited superior catalytic performance and stability for the hydrogenation of CO2-derived ethylene carbonate to methanol and ethylene glycol. The modification of Cu species by MoOx improved the electronic properties, reduced activation energy, and enhanced Cu+/(Cu-0 + Cu+) ratios, ultimately leading to enhanced selectivity and stability of the catalyst. Additionally, MoOx decoration influenced the strength and quantity of surface acid sites, further improving the catalytic performance.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Yaxin Chen, Xiaohua Cai, Yuxia Sun, Minxing Du, Jiaojiao Zhao, Yuehui Li
Summary: Cerium and boron were doped into copper-based catalysts using the ammonia-evaporation method, resulting in different effects on the Cu+ content. Ce-doping increased Cu+ content, while B-doping decreased it. Ce-doping did not change the acidity of the catalyst, while B-doping increased the amount of medium-strong acid sites. Application in ethylene carbonate hydrogenation showed that Ce-doping promoted methanol production, while boron had negative effects. The difference in performance can be attributed to the distinctive acidic/basic properties of Ce/B dopants, which influence the interaction between Cu and Si in the precursors.
Article
Chemistry, Physical
Paola Riani, Ioannis Valsamakis, Tullio Cavattoni, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Ni-based catalysts with enhanced thermal stability and catalytic performance for CO2 methanation have been synthesized, and it was found that La2O3 plays a promoting role in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Deliang Yang, Ling Lin, Rong Guo, Peiyu Zhao, Wei Cheng, Wenpeng Yuan, Yeyan Qin, Yuangen Yao
Summary: The study shows that different silver promotion methods have significant effects on the activity, selectivity, and stability of Cu-Ag/SiO2 catalysts. Introducing silver promoter through impregnation method B can enhance the activity and selectivity of the catalyst, as well as improve the stability of the Cu/SiO2 catalyst.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Qinglei Wu, Chenyang Shen, Chang-jun Liu
Summary: The use of an amino acid modified Pd/SiO2 catalyst suppresses the excessive hydrogenation capacity of palladium, leading to improved selectivity for hydrogenation of acetylene.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xinyue Tang, Junchao Wang, Yonghui Ma, Jing Li, Xinglai Zhang, Baodan Liu
Summary: The newly developed Co3O4/TiO2 monolithic catalysts grown on Ti mesh show high efficiency and stability, capable of completely oxidizing CO at lower temperatures, demonstrating great potential for industrial applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Yeliang Sheng, Jinfei Peng, Lei Ma, Yunyi Zhang, Taotao Jiang, Xiaonian Li
Summary: Researchers have developed a series of nickel-embedded porous carbon coated monolithic catalysts using a novel method, showing enhanced stability and catalytic activity in the gas phase compared to traditional catalysts.
Article
Engineering, Chemical
Ke Yang, Shan Zhong, Hairong Yue, Siyang Tang, Kui Ma, Changjun Liu, Kai Qiao, Bin Liang
Summary: Pulsed chemical vapor deposition (P-CVD) was used to deposit SiO2 films onto TiO2 particles, resulting in enhanced weatherability and inhibited photocatalytic activity. The developed custom-designed rotary reactor and coating process proved to be feasible and convenient for scale-up production. Comparisons with traditional wet chemical deposition showed that P-CVD produced thinner but denser films with better photoactivity suppression performance.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Wentao Xu, Guoqiang Shu, Shihui Zhang, Lei Song, Kui Ma, Hairong Yue
Summary: In this study, a highly active visible-light photocatalytic system was designed by anchoring V2O5/TiO2 heterojunctions and graphited carbon layers derived from MXene. The system showed about 4.58 and 2.79 times higher degradation activity of methylene blue under visible light compared to pure V2O5 and TiO2-carbon. The formed heterojunction promoted the separation of photogenerated carriers and the graphitized carbon enhanced the absorption of visible light. The proposed mechanism model provides a feasible idea for the design of high-efficiency photocatalysts for environmental treatment.
Article
Engineering, Chemical
Ke Yang, Shan Zhong, Siyang Tang, Xuemei Zhou, Ruoyu Wang, Kui Ma, Lei Song, Hairong Yue, Bin Liang
Summary: This study successfully deposited a SiO2/Al2O3 composite film onto TiO2 particles using pulsed chemical vapor deposition. The coated TiO2 particles showed inhibited photoactivity and excellent pigmentary properties, making them promising for improving the weatherability of polyvinyl chloride and waterborne paints.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Lei Song, Yanhong Liu, Shihui Zhang, Changan Zhou, Kui Ma, Hairong Yue
Summary: This study investigates the relationship between oxygen vacancies and catalytic properties of Co3O4 catalyst by synthesizing different oxygen vacancies in Co3O4-xET samples. The results show that increasing ethanol concentration significantly improves the catalytic activity and stability of Co3O4 catalyst.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Chang -An Zhou, Shenghong Wang, Kui Ma, Lei Song, Lirong Zheng, Hairong Yue
Summary: In this study, a novel strategy of Ru modification to improve kinetics and reduce overpotential was demonstrated. The Ru-1-Pt3Ni/NiF alloy exhibited high selectivity in ethanol oxidation, and the constructed cell achieved high-purity hydrogen production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Multidisciplinary
Lei Song, Ronghao Zhang, Changan Zhou, Guoqiang Shu, Kui Ma, Hairong Yue
Summary: A novel photocatalytic system of Cu/TiO2 for activation of the C-H bond in ethane dehydrogenation to ethylene at room temperature is proposed. The optimized 1%-Cu/TiO2 catalyst showed high conversion and selectivity, as well as excellent stability. The reaction mechanism involves C-H bond activation, generation of ethyl radicals, and conversion to ethylene.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Rong Li, Liwen Yang, Lei Song, Changan Zhou, Jiayu Zhou, Ting Chen, Chen Wu, Yujia Zeng, Kui Ma, Hairong Yue
Summary: A very thin, low-resistance, low-reactivity LiGa alloy layer was fabricated on the Li metal surface using an in-situ electrochemical reduction method. This layer suppressed side reactions with sulfides and dendrites. Lithium-sulfur batteries with the LiGa layer exhibited excellent electrochemical kinetics, high specific capacity, and high stability. The alloy layer-based cells showed long cycle lifespan and high capacity under high sulfur-loading, low Electrolyte/Sulfur ratio (5.0 muL mg-1), and thin lithium flakes (50 mu m).
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Shenghong Wang, Changan Zhou, Yongda Cao, Lei Song, Lirong Zheng, Kui Ma, Hairong Yue
Summary: The 2.5Pt-2Cu/Fe2O3 catalyst synthesized by the complexation precipitation method showed superior activity and durability in the electrochemical water-gas shift reaction, with low onset potential, high specific activity, and excellent mass activity. It can be used for hydrogen production under different concentrations of CO and purification of CO in a hydrogen-rich atmosphere.
JOURNAL OF CATALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Yidan Peng, Kui Ma, Tianzhu Xie, Jiaqi Du, Lirong Zheng, Fengbao Zhang, Xiaobin Fan, Wenchao Peng, Junyi Ji, Yang Li
Summary: In this study, novel electrocatalysts with individually dispersed Pt active sites and tunable Pt-Ni interaction were developed. The Pt/Ni-DA catalyst exhibited superior performance for the hydrogen evolution reaction (HER), with an ultralow overpotential of 18 mV at 10 mA cm(-2) and an ultrahigh mass activity of 2.13 A mg(Pt) (-1) at an overpotential of 50 mV, which is about four times higher than that of commercial Pt/C. X-ray absorption fine structure (XAFS) confirmed the diffusion of Pt from the Ni surface to the Ni bulk phase. Mechanistic research and density functional theory (DFT) calculations revealed that the dispersibility and distribution of Pt atoms in Ni regulate the electronic configuration of Pt sites, optimizing the binding energy of reaction intermediates and facilitating electron transfer during the HER process. This work highlights the importance of electronic structure alteration through the accommodation effect for enhanced catalytic performance in HER.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Guoqiang Shu, Yaqi Lin, Rui Zhong, Xiaofan Su, Shanhong Guo, Chao Wang, Changan Zhou, Lei Song, Li Xie, Kui Ma, Hairong Yue
Summary: In this paper, Ag NWs@BaTiO3 core-shell composites with good biocompatibility, low cytotoxicity, and high antibacterial efficiency under harsh conditions were presented. The continuous co-disturbances induced by ultrasound and light disrupted the electrostatic balance and saturation effects of the triple internal electric field on the composites, increasing its affinity and adhesion to bacterial cells. The antibacterial efficiency of the composites against S. aureus and E. coli reached 92.5% within 60 min and close to 100% within 30 min under low-power visible light irradiation and ultrasonic vibration, respectively.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Siru Lu, Lei Song, Changan Zhou, Ziyu Su, Guoqiang Shu, Kui Ma, Hairong Yue
Summary: Ce-PO43- catalyst shows superior hydrothermal stability and has the potential to replace commercial Cu-SSZ-13, providing a strategy to improve the hydrothermal stability of metal oxide SCR catalysts for the removal of NOx from vehicle emissions.
Article
Chemistry, Multidisciplinary
Yi Zhang, Guoqiang Shu, Zhongtao Shang, Kui Ma, Lei Song, Chao Wang, Chang-An Zhou, Hairong Yue
Summary: PtPd nanoflower alloys uniformly anchored on carbon paper were synthesized by electrodeposition, and exhibited high methanol oxidation reaction (MOR) activity and tolerance. The Pt1Pd1-N NFs/CP showed a mass activity of 9.25 A mg(Pt+Pd) (-1) and a specific activity of 13.2 mA cm(ECSA) (-2) of MOR in the alkaline electrolyte, with 87.8% of the initial activity retained after 500 cycles. The complete oxidation of methanol without producing CO was achieved by the Pt1Pd1-N NFs/CP. The synergistic effect between Pt and Pd greatly improved the MOR electrocatalytic performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Zhifeng Qin, Yuyi Liao, Zhenghao Wang, Shenghong Wang, Lei Song, Kui Ma, Dongmei Luo, Hairong Yue
Summary: In this study, a new and highly efficient method of preparing amidoxime nanofiber membranes (AOPAN NFs) was developed using electrostatic spinning technology for Ga(III) adsorption from Ga-containing wastewater. The results showed that AOPAN NFs exhibited remarkable adsorption capacity for Ga(III) and followed the Langmuir isotherm. The adsorption process was controlled by a chemical reaction and the oxime group played an essential role in the adsorption mechanism.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Hongwei He, Kui Ma, Huibin Liu, Jing Li, Lirong Zheng, Fengbao Zhang, Xiaobin Fan, Wenchao Peng, Junyi Ji, Yang Li
Summary: Heteroatom doping is an effective strategy for modulating the electronic structure and intrinsic activity of catalysts. In this study, a controllable self-assembly strategy was used to prepare atomically dispersed Fe-N-4-O-1 anchored N-doped porous carbon, which exhibited superior catalytic activity compared to Fe-N-4 sites. The oxygen atoms on Fe-N-4-O-1 sites were found to modulate the adsorption free energy of benzylamine and directly participate in the oxidation reaction, thus promoting the oxidative coupling process.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Lei Song, Yan He, Changan Zhou, Guoqiang Shu, Kui Ma, Hairong Yue
Summary: A Ru/NH2-MCM-41 catalyst was prepared using a coordination-assisted strategy and showed high selectivity in the hydrogenation of dimethyl oxalate, resulting in high yields of methyl glycolate and ethylene glycol under specific reaction temperatures.
CHEMICAL COMMUNICATIONS
(2022)
