Article
Chemistry, Physical
Xiaobo He, Lijun Wang, Kuochih Chou
Summary: In this study, the interfacial element distribution and structure of CaO-SiO2-10%mass MnO slag were explored using gas-slag equilibrium experimental method and XPS detection method. The results showed that the interface sulfide capacity continuously decreases as the etching depth increases, possibly due to the d electron supplement from Mn. The structural units obtained by Raman spectroscopy are closer to the CaO-SiO2 system, while the interfacial structure tends towards the MnO-SiO2 system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hongxia Liu, Wendong Zhou, Ling Fu, Chaozheng He
Summary: By using density functional theory calculation, this study investigated the properties of Au and Au-C co-doping catalysts in CO and H2 syngas catalytic reactions. The calculations showed that the co-doping catalysts could reduce the reaction energy barrier and increase the reaction rate, indicating their potential application value in syngas catalytic reactions.
CHEMICAL PHYSICS LETTERS
(2023)
Editorial Material
Chemistry, Physical
Michael Claeys
Summary: Double-shelled hollow spheres comprised of various catalytic materials enhance the efficiency of catalytic processes for the selective conversion of hydrogen and carbon monoxide to gasoline.
Article
Chemistry, Physical
Erling Rytter, Christian Aaserud, Anne-Mette Hilmen, Edvard Bergene, Anders Holmen
Summary: The pretreatment and reduction time significantly influence the catalytic activity of cobalt foil catalysts, increasing the available surface area and cobalt site density, and enhancing the olefin hydrogenation reaction and selectivity to heavier components. However, prolonged reduction time leads to sintering of cobalt crystallites, while too short of a reduction time results in incomplete reduction.
Article
Chemistry, Multidisciplinary
Gaofeng Chen, Yunchao Feng, Zhiwei Wang, Guihua Yan, Zhihao Si, Yong Sun, Xing Tang, Shuhua Yang, Tingzhou Lei, Xianhai Zeng, Lu Lin
Summary: The study utilized a solvent coordination-assisted impregnation strategy to synthesize CuCo@M-SiO2 catalysts, which can enhance the yield of higher alcohol synthesis. Among the selected solvent ligands, the CuCo@M-SiO2 catalyst derived from 1,2-propanediol-assisted impregnation exhibited excellent catalytic performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Lesia Piliai, Peter Matvija, Thu Ngan Dinhova, Ivan Khalakhan, Tomas Skala, Zdenek Dolezal, Oleksii Bezkrovnyi, Leszek Kepinski, Mykhailo Vorokhta, Iva Matolinova
Summary: In this study, the metal-substrate interaction and species transformation during CO oxidation on CeO2(111) surface were investigated. It was found that the interaction between gold nanoparticles and peroxo oxygen species formed on ceria step edges resulted in the formation of ionic gold species. Moreover, the addition of O2 led to the rapid growth of Au particles and the formation of large particles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nuclear Science & Technology
Huan Zhang, Lei Xie, Zhao-Feng Liang, Chao-Qin Huang, Hong-Bing Wang, Jin-Ping Hu, Zheng Jiang, Fei Song
Summary: Bimetallic catalysts utilize synergistic effects between two metal species for their catalytic activity. Understanding CO oxidation on hybrid heterogeneous catalysts is crucial for catalyst design and environmental protection. In this study, a Bi-Au/SiO2 bimetallic catalyst was investigated for CO oxidation, and it was found that the introduction of Bi promoted the catalytic activity on the Au/SiO2 surface. The mechanism involves the dissociation of O2 molecules by Bi, leading to the spillover of O species to adjacent Au atoms and subsequent CO oxidation.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Chemistry, Multidisciplinary
Linpo Li, Yingchao Wang, Gang Jiang, Jing Li, Mingyu Wang, Yanli Niu, Enbo Shangguan
Summary: In this study, MnO nanoparticle cathode materials confined in porous nitrogen, sulfur co-doped porous carbon (MnO@NSC) were prepared. The MnO@NSC cathodes exhibited remarkable electrochemical performances with enhanced rate performance, long lifespan, and remarkable energy density, making them suitable for rechargeable aqueous zinc ion batteries.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Environmental Sciences
Shanmugasundaram Kamalakannan, K. Rudharachari Maiyelvaganan, Kandhan Palanisamy, Anoopa Thomas, Ridha Ben Said, Muthuramalingam Prakash, Majdi Hochlaf
Summary: The research reveals the adsorption and catalytic activation mechanism of CO2 on ionic liquids attached to a gold surface, showing efficient ways to activate and convert CO2 into value-added products. The study emphasizes that a suitable interface material is enough to activate CO2.
Article
Chemistry, Multidisciplinary
Jordi Volders, Ken Elen, Arno Raes, Rajeshreddy Ninakanti, An-Sofie Kelchtermans, Francesc Sastre, An Hardy, Pegie Cool, Sammy W. Verbruggen, Pascal Buskens, Marlies K. Van Bael
Summary: This study demonstrates the conversion of CO2 and H-2 to CO using plasmonic Au/TiO2 nanocatalysts and artificial sunlight as the energy source. The activity and selectivity of the catalyst are influenced by the size of Au nanoparticles and light intensity. The catalytic activity of Au/TiO2 increases exponentially with increasing light intensity.
Article
Chemistry, Inorganic & Nuclear
Xue Chen, Hongfei Yin, Xiaoyong Yang, Weining Zhang, Dongdong Xiao, Zhen Lu, Yongzheng Zhang, Ping Zhang
Summary: Compared with the Haber Bosch process, the electrochemical nitrogen reduction reaction (NRR) offers a more environmentally friendly and sustainable route for ammonia synthesis. This study developed Co-doped Fe3S4 nanoflowers as a catalyst for NRR, achieving high Faradaic efficiency and NH3 yield rate. The introduction of Co atoms promoted N-2 absorption and accelerated the catalytic process, providing a pathway for enhancing ammonia synthesis using morphology and doping engineering for Fe-based electrocatalysts.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kai Jeske, Thorsten Roesler, Maurice Belleflamme, Tania Rodenas, Nico Fischer, Michael Claeys, Walter Leitner, Andreas J. Vorholt, Gonzalo Prieto
Summary: We report a method that integrates solid cobalt Fischer-Tropsch and molecular hydroformylation catalysts in tandem for selective conversion of syngas to higher alcohols. Catalyst engineering enables efficient overall transformation by bridging gaps in operation temperature and intrinsic selectivity. The results demonstrate that controlled cooperation between solid and soluble catalysts is a promising approach for selective conversion processes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Jian Wang, Xingxing Gao, Yajun Wang, Shaoyan Wang, Zhiwen Xie, Binzheng Yang, Zhiguo Zhang, Zhuang Yang, Lei Kang, Wenqing Yao
Summary: In this study, C@MnO@TiO2 composites with integrated core-double-shell structures were designed and fabricated for efficient toluene oxidation through photothermal catalysis. The optimal Mn/Ti molar ratio of 0.4 showed higher photothermal catalytic activity, highlighting the importance of controlled coating thickness and surface properties in enhancing catalytic performance.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Sen Wang, Jing Liu, Jie Gong, Qishen Guo, Jinchuan Fan, Wei Huang
Summary: In this paper, CuZnAl@S-1, CuZn@S-1, ZnAl@S-1, and CuAl@S-1 catalysts were prepared and evaluated for their catalytic performance in the direct conversion of syngas to ethanol. The results showed that CuZnAI nanoparticles immobilized on S-1 showed enhanced conversion of ethanol with high selectivity. The core-shell structure of the catalyst promoted CO adsorption and dissociation, leading to C-C coupling.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Shuai Lyu, Yuhu Wang, Jieshu Qian, Sixu Liu, Zhe Li, Yuhua Zhang, Li Wang, Jinlin Li
Summary: The study demonstrates that CO molecules can enhance the acidity strength of zeolite, increase the ratio of acid sites, and stabilize the intermediate, leading to high selectivity towards desired products.
Article
Nanoscience & Nanotechnology
Changbao Zhao, Chao Wang, Hui Xin, Hao Li, Rongtan Li, Bin Wang, Wei Wei, Yi Cui, Qiang Fu
Summary: Transition metal nitrides (TMNx) exhibit high catalytic activity in various reactions. In this study, MoN and Mo2N nanosheets were prepared and subjected to in situ surface characterization in the presence of oxidative and reductive gases. The results revealed the formation of different oxide surface layers on MoN and Mo2N, and highlighted the role of O and H atoms in the formation of active structures.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hui Xin, Le Lin, Rongtan Li, Dan Li, Tongyuan Song, Rentao Mu, Qiang Fu, Xinhe Bao
Summary: This study demonstrates the construction of SMSI state in Ru-MoO3 catalysts using CO2 hydrogenation reaction gas at low temperatures. The encapsulated structure formed during the reaction shows excellent selectivity and long-term stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Zhiyu Yi, Le Lin, Yuan Chang, Xuda Luo, Junfeng Gao, Rentao Mu, Yanxiao Ning, Qiang Fu, Xinhe Bao
Summary: Dynamic control of oxide nanostructures is crucial for the design and understanding of oxide catalysts. This study demonstrates reversible conversion between Cr oxide nanoislands and clusters, highlighting the influence of redox treatments and environment.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Yijing Liu, Rankun Zhang, Le Lin, Yichao Wang, Changping Liu, Rentao Mu, Qiang Fu
Summary: In this study, stripe-like MnO(001) and grid-like Mn3O4(001) monolayers were constructed on Pt(111) substrate to investigate hydrogen spillover. The experimental results showed that hydrogen diffused unidirectionally along the stripes on MnO(001), while it had an isotropic pathway on Mn3O4(001). The dynamic surface imaging in H-2 atmosphere revealed that hydrogen diffused 4 times faster on MnO than on Mn3O4, which was attributed to the one-dimensional surface-lattice-confinement effect. Theoretical calculations indicated that a uniform and medium O-O distance favored hydrogen diffusion while low-coordinate surface O atom inhibited it. This work illustrated the surface-lattice-confinement effect of oxide catalysts on hydrogen spillover and provided a promising route to improve the hydrogen spillover efficiency.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yamei Fan, Fei Wang, Rongtan Li, Conghui Liu, Qiang Fu
Summary: In this study, gamma-alumina supports with different hydroxyl (OH) contents were prepared by calcinating pseudo-boehmite at different temperatures. The effect of surface OH on the oxidative redispersion process of supported Ag nanoparticles was investigated. The results show that the dispersion capacity of Ag species is thermodynamically determined by the surface OH contents, while the dispersion rate is kinetically limited by the OH densities. Both OH contents and OH densities play critical roles in the redispersion of metal particles and can be utilized to manipulate CO oxidation reactions catalyzed by Ag.
Article
Chemistry, Physical
Zhiyu Yi, Le Lin, Xuda Luo, Yanxiao Ning, Qiang Fu
Summary: Interfacial interaction between supported catalysts and the underlying substrate is crucial in catalysis. This study demonstrates that the interaction between Cr2O7 and Au can be weakened by applying an electric field, allowing for manipulation of the individual clusters. However, surface alloying with Cu enhances the interaction and makes the manipulation difficult.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Applied
Chao Wang, Xianjin Li, Guiming Zhong, Caixia Meng, Shiwen Li, Guohui Zhang, Yanxiao Ning, Xianfeng Li, Qiang Fu
Summary: In-depth understanding of the electrolyte-dependent intercalation chemistry in batteries is crucial for high-performance battery development. This study investigated the effect of electrolyte coordination structure on intercalation processes in the Al/graphite battery using operando XPS and X-ray diffraction. The weaker anion-cation interaction in the HMI-based electrolyte led to a lower atomic ratio of co-intercalated N to intercalated Al, resulting in lower ionic diffusion rate, capacity, and cycling performance. These findings emphasize the critical role of electrolyte coordination structure in (co-)intercalation chemistry.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Youwen Rong, Tianfu Liu, Jiaqi Sang, Rongtan Li, Pengfei Wei, Hefei Li, Aiyi Dong, Li Che, Qiang Fu, Dunfeng Gao, Guoxiong Wang
Summary: This study presents a strategy for highly selective production of acetate from CO electrolysis by constructing metal-organic interfaces. The Cu-organic interfaces constructed by in situ reconstruction of Cu complexes demonstrate impressive acetate selectivity, with high Faradaic efficiency and carbon selectivity. The study provides insights into the mechanism of selective acetate production.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Xuda Luo, Zhiyu Yi, Yanxiao Ning, Qiang Fu
Summary: This study investigates the structural evolution of supported metal catalysts under different treatment conditions. They construct model systems and use scanning tunneling microscopy and X-ray photoelectron spectroscopy to characterize the structural changes of supported Cu nanostructures. The results provide important insights for understanding the activity and stability of catalysts.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Yijing Liu, Le Lin, Liang Yu, Rentao Mu, Qiang Fu
Summary: The search for efficient non-noble-metal catalysts for selective oxidation reactions is important but often hampered due to controversial origin of the selectivity, especially for oxide-catalyzed reactions. In this study, high-pressure surface imaging techniques and theoretical calculations were used to identify spatially separated active sites for O-2 activation and H-2 adsorption on an ultrathin Mn3O4 surface, enabling selective oxidation of CO over H-2. The study sheds light on the atomic-level understanding of surface structure-dependent selective oxidation reactions on oxide catalysts.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Cui Dong, Rentao Mu, Rongtan Li, Jianyang Wang, Tongyuan Song, Zhenping Qu, Qiang Fu, Xinhe Bao
Summary: The interaction between oxide catalyst and oxide support is crucial in catalytic reactions. The construction of chemically bonded oxide-oxide interface by deposition of Co3O4 onto ZnO powder inhibits the complete reduction of Co3O4 and maintains a metastable CoOx state, resulting in high selectivity towards CO in CO2 hydrogenation reaction. On the other hand, physically contacted oxide-oxide interface formed by mechanical mixing promotes the reduction of Co3O4 and enhances CO2 conversion and selectivity towards CH4 through the remote spillover of dissociated hydrogen species.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Changping Liu, Le Lin, Hao Wu, Yijing Liu, Rentao Mu, Qiang Fu
Summary: Tuning the oxide/metal interface is crucial for enhancing the performance of many catalytic reactions. However, catalytic oxidation at the interface between non-reducible oxide and metal is challenging due to the reluctance of non-reducible oxides to lose oxygen. This study investigates CO oxidation at the ZnO/Au(111) interface using a ZnO monolayer film as an inverse catalyst and demonstrates that oxygen intercalation underneath the ZnO film significantly enhances the oxidation reaction.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Rongtan Li, Conghui Liu, Yamei Fan, Qiang Fu, Xinhe Bao
Summary: The activity of active oxygen species on supported Ag atoms can be effectively modulated by metal-support interactions using different oxide supports. The strong interaction between Ag and Al2O3 leads to the formation of more Ag-O-2(-) (superoxide) species, responsible for the selective oxidation of ethylene to ethylene oxide. The relatively weak interaction between Ag and SiO2 induces the generation of Ag-O (atomic oxygen) and Ag-O-2(2-) (peroxide) species, which are more active for complete oxidation of CO and ethylene to CO2. This work is of significance for deep understanding of active surface species in atomically dispersed metal catalysts.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yamei Fan, Fei Wang, Rongtan Li, Conghui Liu, Qiang Fu
Summary: In this study, gamma-alumina supports with different OH contents were prepared by calcinating pseudo-boehmite at different temperatures. The role of surface OH groups in the oxidative redispersion of supported Ag nanoparticles was investigated. It was found that the dispersion capacity and rate of Ag species were determined by the surface OH contents and densities, respectively. These findings provide insights into the manipulation of Ag-catalyzed CO oxidation reaction.
Article
Chemistry, Multidisciplinary
Xuda Luo, Xiaoyuan Sun, Zhiyu Yi, Le Lin, Yanxiao Ning, Qiang Fu, Xinhe Bao
Summary: The rational design of highly stable and active metal catalysts requires a deep understanding of metal-support interactions at the atomic scale. Ultrathin films of FeO and FeO2-x grown on Pt(111) were used as templates for the construction of well-defined metal nanoclusters. The selective nucleation and formation of Cu clusters were driven by different interactions with the Fe oxide domains, which were validated by density functional theory calculations. The study reveals that the reactivity descriptor of surface O atoms determines the interaction between metal adatoms and Fe oxides, providing guidance for the rational design of supported single-atom and nanocluster catalysts.