Article
Chemistry, Multidisciplinary
Guigao Liu, Wei Zhou, Yiru Ji, Bo Chen, Gengtao Fu, Qinbai Yun, Shuangming Chen, Yunxiang Lin, Peng-Fei Yin, Xiaoya Cui, Jiawei Liu, Fanqi Meng, Qinghua Zhang, Li Song, Lin Gu, Hua Zhang
Summary: Lattice engineering on specific facets of metal catalysts is crucial for enhancing catalytic performance, as shown by a two-step method developed to expand the lattice on Pt(100) and Pt(111) facets. This lattice expansion significantly promotes alcohol oxidation reactions on both Pt(100) and Pt(111) facets, with impressive mass-specific activities achieved on the Pt(111) facet. Density functional theory calculations suggest that enhanced OH adsorption is responsible for the improved catalytic performance. These findings pave the way for enhancing the electrocatalytic activity of nanomaterials and designing highly efficient catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Zezhou Li, Zhiheng Xie, Yao Zhang, Xilong Mu, Jisheng Xie, Hai-Jing Yin, Ya-Wen Zhang, Colin Ophus, Jihan Zhou
Summary: Deciphering the three-dimensional atomic structure of solid-solid interfaces in core-shell nanomaterials is key to understanding their catalytical, optical, and electronic properties. In this study, the authors used atomic resolution electron tomography to investigate the atomic structures of palladium-platinum core-shell nanoparticles at the single-atom level. They found that the core-shell interface is atomically diffuse with an average thickness of 4.2 angstrom, regardless of the particle's morphology or crystallographic texture. The high concentration of Pd in the diffusive interface is related to the dissolution of free Pd atoms from the Pd seeds, as confirmed by cryogenic electron microscopy.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yuyu Chen, Xiaobing Zeng, Yawen Liu, Rongkai Ye, Qianwei Liang, Jianqiang Hu
Summary: The study achieved structure transformation between Au-Pd alloy and core-shell icosahedral nanoparticles through a one-step aqueous-phase strategy, providing a way to modulate Pd's electronic structure and enhance its electrocatalytic ability towards the hydrogen evolution reaction.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Fei Gao, Yangping Zhang, Huaming You, Zhuolin Li, Bin Zou, Yukou Du
Summary: In this study, a one-pot, surfactant-free approach was developed to obtain a PdPtAu@Pd core@shell catalyst for the photocatalytic methanol oxidation reaction. The 0D@2D PdPtAu@Pd catalyst exhibited superior catalytic performance compared to Pt/C and Pd/C catalysts, with a mass activity 2.3- and 6.7-times higher, respectively.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Tiantian Zeng, Linwei Zheng, Haibo Chen, Yanrui Wang, Miao Ling, Shiwei Sun, Fan Zhang, Weiyong Yuan, Lian Ying Zhang
Summary: This study presents a one-pot controllable epitaxial growth method for Pd-based heterostructures, which allows for effective control of their composition and morphology, resulting in enhanced catalytic activity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Deok-Hye Park, Yo-Seob Kim, Sang-Beom Han, Woo-Jun Lee, Hak-Joo Lee, Yong-Soo Lee, Sang-Hyun Moon, Kyung-Won Park
Summary: A novel bi-metallic phosphide structure has been reported as an electrocatalyst with enhanced electrochemical activity compared to traditional catalysts, showing superior performance in OER, ORR, and MOR applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Ruihua Guo, Na An, Yarong Huang, Lili Guan, Guofang Zhang, Guofu Zhu, Zhaogang Liu
Summary: This study successfully prepared Pt nanocatalysts with high-index facets by adjusting the amount of PVP and glycine, and found that the electrocatalytic performance of the prepared catalyst was better than that of the commercial catalyst. The defects such as steps and kinks on the surface of the high-index facets increased the active sites, resulting in excellent electrocatalytic performance. This study provides a theoretical basis for the development and commercial application of high index facets nanocatalysts.
Article
Chemistry, Multidisciplinary
Yongping Luo, Wei Zhong, Ping Huang, Hui Ou, Haiyan Fu, Chen Liu, Zonghu Xiao, Shunjian Xu
Summary: Utilizing core-shell CMs@NiO as the support material, the enhancement of electrocatalytic oxidation of methanol by Pt catalyst was achieved, showing improved activity and stability, which has potential applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Junfang Hao, Bin Liu, Shinya Maenosono, Jianhui Yang
Summary: In this study, Au-M@SiO2 core-shell nanoparticles were synthesized and found to exhibit excellent catalytic activity in the reduction of p-nitrophenol, surpassing most reported catalysts.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Chiranjita Goswami, Biraj Jyoti Borah, Ruprekha Das, Kohei Tada, Shingo Tanaka, Igor P. Prosvirin, Ilyas Z. Ismagilov, Ekaterina Matus, Mikhail Kerzhentsev, Pankaj Bharali
Summary: Engineering metal/oxide interface and controlling composition are important strategies for efficient Pd-based electrocatalysts. In this study, Pd3M alloy nano-particles anchored on C-CeO2 (Pd3M/C-CeO2, M = Cu, Ni, Co) demonstrated significant performance in formic acid oxidation. The improved activity can be attributed to the electronic and synergistic effects between Pd and the alloyed metal, resulting in lattice contraction and downshift of d-band center. The presence of oxygen vacancies in CeO2 and strong Pd/CeO2 interactions also contribute to the overall electrocatalytic behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yao-Yin Lou, Chi Xiao, Jiayi Fang, Tian Sheng, Lifei Ji, Qizheng Zheng, Bin-Bin Xu, Na Tian, Shi-Gang Sun
Summary: The study found that Pd nanocatalysts with abundant step sites exhibit higher catalytic performance in the electrocatalytic dechlorination reaction; the adsorbed C=O bond and generated H-ads* on the step sites can lower the C-Cl bond splitting barrier, leading to improved reaction efficiency.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Linfang Lu, Bing Wang, Di Wu, Shihui Zou, Baizeng Fang
Summary: By controlling the molar ratio of Pd precursor to Cu2O, a series of Pd-Cu nanocrystals with both porous and dendritic features were successfully synthesized, showing superior electrocatalytic activity towards formic acid oxidation. The outstanding performance is attributed to surface steps, defects, three-dimensional architecture, and electronic/strain effects between Cu and Pd.
Article
Chemistry, Physical
Jingyun Zhang, Yajun Zhong, Chunyan Zhang, Junyu Zhang, Zhenjing Zhuang
Summary: Mesoporous Pt-Pd bimetallic core-shell nanospheres with palladium-rich cores and platinum-rich shells were synthesized via a simple wet chemical strategy mediated by nitrogen-doped carbon dots. These nanospheres showed superhigh oxidase activity and excellent oxidase-like catalytic efficiency due to their large active surface area.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Xichen Zhou, Yangbo Ma, Yiyao Ge, Shangqian Zhu, Yu Cui, Bo Chen, Lingwen Liao, Qinbai Yun, Zhen He, Huiwu Long, Lujiang Li, Biao Huang, Qinxin Luo, Li Zhai, Xixi Wang, Licheng Bai, Gang Wang, Zhiqiang Guan, Ye Chen, Chun-Sing Lee, Jinlan Wang, Chongyi Ling, Minhua Shao, Zhanxi Fan, Hua Zhang
Summary: The Au@Pd core-shell nanorods with a unique fcc-2H-fcc heterophase exhibit superior electrocatalytic ethanol oxidation performance, contributing to insights into the catalytic mechanism. The exceptional performance of the heterophase Au@Pd nanorods is attributed to the unconventional 2H phase, the 2H/fcc phase boundary, and the lattice expansion of the Pd shell.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Yan Dong, Zhenlan Li, Guocheng Zheng, Jiawei Zhang, Jiawei Zhou, Yuki Orikasa, Yoshiharu Uchimoto, Xiaoming Wang
Summary: The use of a quasi-monolayer Pt shell (Pt-qms) on a Pd core (Pd-c) can achieve cost and activity targets for the electrocatalytic oxygen-reduction reaction (ORR). In situ X-ray absorption spectroscopy was used to monitor the structural evolution of Pd(c)Pt(qms) during ORR, revealing that Pt-qms undergoes restructuring to form Pt clusters and holes while Pd-c remains stable. Protecting the structure of Pd-c is crucial in the development of high-performance Pd(c)Pt(qms) electrocatalysts.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Fang Yang, JinYu Ye, Qiang Yuan, Xiaotong Yang, Zixuan Xie, Fengling Zhao, Zhiyou Zhou, Lin Gu, Xun Wang
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Physical
Guorong Chen, Xiaotong Yang, Zixuan Xie, Fengling Zhao, Zhiyou Zhou, Qiang Yuan
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Chemistry, Physical
Zixuan Xie, Hu Cheng, Zhuo Chen, Xiaotong Yang, Zhiyou Zhou, Qiang Yuan
Summary: Research focuses on the development of multimetallic Pt-based nanostructures as high-performance cathodic electrocatalysts for hydrogen generation. A new family of hierarchical architectures shows promising results in alkaline electrolyte, with the PtFeRuRh nanoalloy exhibiting the highest performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Xiaotong Yang, Ke Xin Yao, Jin Yu Ye, Qiang Yuan, Fengling Zhao, Yongfei Li, Zhiyou Zhou
Summary: This study introduces a novel 3D PtBiAu intermetallics as high-performance anode electrocatalysts for application in alcohol fuel cells, which exhibit superior activity and long-term durability.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Fengling Zhao, Lirong Zheng, Qiang Yuan, Xiaotong Yang, Qinghua Zhang, Han Xu, Yuanlong Guo, Song Yang, Zhiyou Zhou, Lin Gu, Xun Wang
Summary: A new visible-light-induced template technique has been developed to produce PdAuBiTe alloyed 2D ultrathin nanosheets, showing excellent oxygen reduction reaction activity and anti-CO poisoning properties. As cathode electrocatalysts in direct methanol fuel cells, the PdAuBiTe nanosheets can significantly improve power density and durability. In O-2/air, the power density can be increased to 235.7/173.5 mW cm(-2), higher than previous reports, and is 2.32/3.59 times higher than Pt/C.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Xin Li, Ke Xin Yao, Fengling Zhao, Xiaotong Yang, Jingwei Li, Yongfei Li, Qiang Yuan
Summary: In this study, interface-rich Au-doped PdBi (PdBiAu) nanochains with high ORR activity, durability, and methanol tolerance were prepared. In actual DMFC device tests, PdBiAu nanochains outperformed PdBi nanochains and Pt/C catalysts.
Article
Chemistry, Physical
Xiaoling Wang, Jingwei Li, Xiaotong Yang, Fengling Zhao, Yongfei Li, Daliang Zhang, Li-Yong Gan, Ke Xin Yao, Qiang Yuan
Summary: This study reports a novel Pd tetrahedron electrocatalyst with low-coordinated surface sites and lattice distortions for oxygen reduction reaction (ORR) in power generation devices. The catalyst exhibits remarkable activity and stability in alkaline electrolyte, outperforming commercial Pd/C and Pt/C. The low-coordinated surface sites are found to contribute significantly to the enhancement of ORR activity.
Article
Chemistry, Physical
Rui Chen, Tie Shu, Fengling Zhao, Yongfei Li, Xiaotong Yang, Jingwei Li, Daliang Zhang, Li-Yong Gan, Ke Xin Yao, Qiang Yuan
Summary: This study successfully constructed novel PtCu3@PWOx nanocomposites with excellent mass activity for ORR, which shows great potential for practical applications.
Article
Chemistry, Physical
Fengling Zhao, Lirong Zheng, Qiang Yuan, Qinghua Zhang, Tian Sheng, Xiaotong Yang, Lin Gu, Xun Wang
Summary: A new class of metal catalyst, Pt-rich PtCu heteroatom subnanoclusters, grown on an octahedral PtCu alloy/Pt skin matrix, exhibits enhanced mass activity for the oxygen reduction reaction (ORR). The unique structure derived from the matrix and epitaxial growth pattern provides stability and prevents the agglomeration of clusters and loss of active sites. The catalyst shows improved performance and durability in room-temperature polymer electrolyte membrane fuel cells.
Article
Chemistry, Multidisciplinary
Shanshan Chen, Qiang Yuan, Xun Wang
Summary: This study reports a new class of three-dimensional PdCr MNR assembly with high-density low-coordinated Pd sites and abundant defects. The 3D PdCr MNR/C exhibited significantly enhanced catalytic performance and durability in oxygen reduction and formic acid oxidation reactions compared to commercial Pt/C and Pd/C. This novel material introduces a new member to the metallene family and shows promise as a bifunctional electrocatalyst for practical fuel cell devices.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Xiaotong Yang, Qiang Yuan, Jingwei Li, Tian Sheng, Ke Xin Yao, Xun Wang
Summary: A crystalline PdPtCu@amorphous subnanometer Pd-Pt dual site layer core-shell structure was developed for efficient oxygen reduction and alcohol oxidation reactions in direct alcohol fuel cells. The catalyst showed significantly improved activity, stability, and CO tolerance compared to commercial Pt/C or Pd/C catalysts.
Article
Chemistry, Physical
Mingxiu Duan, Tie Shu, Jingwei Li, Daliang Zhang, Li-Yong Gan, Ke Xin Yao, Qiang Yuan
Summary: Efficient and durable electrocatalysts with highly dispersed Ru clusters anchored on Na+, K+-decorated porous carbon have been successfully prepared through hydrothermal and annealing treatment. The resulting Ru/Na+, K+-PC exhibits ultralow overpotential, high mass activity, and long-term durability, surpassing commercial Pt/C benchmark. Density functional theory calculations suggest that the presence of Na and K ions efficiently decreases the energy barrier for H-OH bond breaking, favoring the Volmer step.
Article
Chemistry, Inorganic & Nuclear
Fengling Zhao, Qiang Yuan
Summary: In this study, three-dimensional porous PdPtBiTe dumbbells (DBs) were prepared using a visible photoassisted method. These DBs exhibited outstanding catalytic performance for alcohol oxidation reactions and demonstrated excellent C-C bond cleavage ability. The mass activities of the 3D PdPtBiTe DBs surpassed those of commercial Pt/C and Pd/C, making them a promising multifunctional anode electrocatalyst for direct alcohol fuel cells.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Fengling Zhao, Lirong Zheng, Qiang Yuan, Qinghua Zhang, Tian Sheng, Xiaotong Yang, Lin Gu, Xun Wang
Summary: A new class of metal catalyst, Pt-rich PtCu heteroatom subnanoclusters epitaxially grown on an octahedral PtCu alloy/Pt skin matrix (PtCu1.60), exhibits enhanced mass activity and durability in the oxygen reduction reaction (ORR). The unique structure and epitaxial growth pattern prevent cluster agglomeration and loss of near-surface active sites, resulting in improved performance and durability in polymer electrolyte membrane fuel cells.
Article
Chemistry, Physical
Fengling Zhao, JinYu Ye, Qiang Yuan, Xiaotong Yang, Zhiyou Zhou
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
