Article
Engineering, Environmental
Wei Meng, Haiyan He, Lu Yang, Quanguo Jiang, Brian Yuliarto, Yusuke Yamauchi, Xingtao Xu, Huajie Huang
Summary: Researchers have successfully synthesized a heterojunction catalyst of Pt nanowires and MXene nanosheets with high methanol oxidation performance and long-term durability. The catalyst possesses structural advantages such as large accessible surface area, stable interconnected Pt networks, and numerous grain boundary sites. It exhibits higher activity and competitiveness compared to traditional Pt nanoparticle/carbon catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Hongjing Wang, Lin Cui, Shuli Yin, Hongjie Yu, Kai Deng, You Xu, Xin Wang, Ziqiang Wang, Liang Wang
Summary: In this study, core-shell structured rambutan-like Au@PdRu nanocatalysts were successfully synthesized, showing superior activity and durability for energy-saving hydrogen production coupled with methanol oxidation.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Anchu Ashok, Anand Kumar, Afdhal Yuda, Abdullah Al Ashraf
Summary: This study reports the preparation of a highly active catalyst, N,S-Co@CNT, which is derived from hierarchical Co9S8 nanowires trapped in Ndoped carbon nanotubes. Compared to traditional Co@CNT, N,S-Co@CNT exhibits higher current density and lower onset potential, attributed to its unique hierarchical structure and surface properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Multidisciplinary
Guoqiang Zhao, Jian Chen, Wenping Sun, Hongge Pan
Summary: This paper summarizes the current research status and challenges of non-platinum group metal electrocatalysts in the hydrogen oxidation reaction, with a focus on theoretical explanations of low HOR kinetics in alkaline media and the advantages and challenges of nickel-based catalysts under alkaline conditions. It also provides prospects for the future development of non-PGM HOR electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Guili Zhao, Caihong Fang, Jinwu Hu, Deliang Zhang
Summary: This article highlights the importance of Pt-based electrocatalysts in direct alcohol fuel cells, while addressing the challenges they face in commercial applications and proposing key measures to improve their activity and durability and reduce costs.
Article
Materials Science, Multidisciplinary
Xiangjie Guo, Qi Wang, Haiyan He, Huajie Huang
Summary: In this study, a controllable and scalable method was proposed to construct ultrafine Pt nanocrystals supported by boron and nitrogen codoped carbon nanohorns (Pt/BN-CNH) as electrocatalysts for methanol oxidation reaction. The resulting Pt/BN-CNH catalysts exhibited high catalytic activity, reliable long-term stability, and strong antipoisoning capacity, surpassing conventional catalysts and showing great potential for next-generation DMFC devices.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Jincheng Zhang, Qilun Wang, Chunyu Qiu, Liyong Gan, Jie Ding, Fuhua Li, Tian Wang, Yuhang Liu, Yucheng Wang, Huabing Tao, Sung-Fu Hung, Hongbin Yang, Bin Liu
Summary: In this study, we developed a low-cost and highly efficient oxygen reduction reaction (ORR) catalyst Fe1/NSG by anchoring single Fe atoms on N,S-codoped graphene. The Fe catalyst center with S atoms in the second coordination sphere regulates the electronic structure and stabilizes the *OOH intermediate in the ORR. Fe1/NSG exhibited high ORR activity with a half-wave potential of 0.90 V vs. RHE and excellent methanol tolerance. The DMFC with Fe1/NSG cathode achieved a peak power density of 198 mW cm-2, outperforming DMFCs assembled with non-precious-metal-based cathode catalysts.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Physical
Scott C. McGuire, Christopher Koenigsmann, Chun Chieh Chou, Xiao Tong, Stanislaus S. Wong
Summary: Perovskite oxides show high activity as support media for the methanol oxidation reaction, with Ni-containing perovskites being more favorable for MOR. The activity of MOR is enhanced as the size of perovskite increases, and one-dimensional morphology of nanorods exhibits greater activity compared to nanocubes of similar diameter.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hongsen Wang, Hector D. Abrun
Summary: This study investigated the electrooxidation process of ethanol on platinum electrodes using spectroscopy and isotopic labeling. It was discovered that the intermediate species produced during ethanol oxidation can degrade the surface of the platinum electrode, reducing its performance. These new mechanistic insights will facilitate the design of higher-performing and more durable electrocatalysts for direct ethanol fuel cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Amit Chaturvedi, Patit Paban Kundu
Summary: Microbial fuel cell technology utilizes organic substrates and oxygen to generate power, with the performance relying on the catalysts used for the oxygen reduction reaction. Various types of catalysts, including electrocatalysts, photo-electrocatalysts, and biocatalysts, have been evaluated for their electrochemical properties, catalytic effectiveness, stability, and power generation in MFCs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Chemistry, Physical
Yunqi Yu, Kangcheng Chen, Qin Wu, Yaoyuan Zhang, Daxin Shi, Hansheng Li
Summary: This paper reviews the modification strategies, advantages, and problems of Pt/rGO catalysts, and discusses the relevant mechanisms. Moreover, the challenges and future development directions of Pt/rGO modifications are summarized.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jia-Jun Han, Ming-yu Yin
Summary: In this paper, hollow NiPt/C nanocrystals were prepared using the sacrificial template method, and the influence of capping agent content on the electrocatalytic methanol oxidation reaction (MOR) performance of the synthetic materials was explored. The electrochemical tests showed that the hollow binary catalyst prepared with a capping agent content of 50 mg had the highest electrochemical active area, and exhibited enhanced stability in acidic solution. The improved catalytic activity was attributed to the hollow structure, higher specific electrochemical surface area, and more abundant active sites.
Article
Green & Sustainable Science & Technology
Bo-Qiang Miao, Ya-Chong Liu, Yu Ding, Pu-Jun Jin, Pei Chen, Yu Chen
Summary: In this study, high-quality chlorine-free Rh nanodendrites (Rh-NDs) were successfully synthesized by a simple one-step chemical-reduction method. Rh-NDs exhibited high electroactivity for methanol oxidation reaction (MOR) in alkaline direct methanol fuel cells. Under optimal experimental conditions, Rh-NDs showed a significant enhancement in electroactivity and durability for MOR compared to irregular Rh nanocrystals, thanks to their dendritic morphology that provides a large specific surface area, rich corner/edge atoms, and efficient aggregation inhibition.
SUSTAINABLE MATERIALS AND TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Zhuojie Xiao, Hao Wu, Huichi Zhong, Ali Abdelhafiz, Jianhuang Zeng
Summary: In this study, carbon supported PtCu catalysts were prepared by a simple polyol method, followed by an electrochemical de-alloying treatment to form PtCu/C catalysts with improved catalytic activity. The de-alloyed PtCu/C catalyst showed a significant enhancement in mass activity after cycling, outperforming state-of-the-art commercial Pt/C catalysts. This work provides insights for designing highly active and stable catalyst platforms for oxygen reduction reaction and proton exchange membrane fuel cell applications.
Article
Nanoscience & Nanotechnology
Yu-Chuan Jiang, Hui-Ying Sun, Ya-Nan Li, Jia-Wei He, Qi Xue, Xinlong Tian, Fu-Min Li, Shi-Bin Yin, Dong-Sheng Li, Yu Chen
Summary: The Pd@RhPd NDs synthesized exhibit high catalytic activity in methanol electrolysis, indicating great potential for efficient hydrogen production.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Ruili Gao, Kunpeng Wang, Fanghui Wang, Hui Wang, Xuyun Wang, Jianwei Ren, Rongfang Wang
Summary: In this study, an organic molecule of perylenequinone was anchored on the surface of carbon material through pi-pi interaction and applied as the cathode of lithium-sulfur batteries (LSBs). The pi-pi interaction overcame the solvation effect of the organic molecule in organic electrolytes, providing stable existence in the long-cycle process of LSBs. The interaction mechanism between the organic molecule and lithium in the cathode was revealed, and the prepared electrode exhibited good cycling stability with high capacity retention.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yucheng Dong, Xichun Zhang, Xuyun Wang, Fangfang Liu, Jianwei Ren, Hui Wang, Rongfang Wang
Summary: Efficient electrocatalysts for large-scale water electrolysis are crucial and challenging. In this study, researchers prepared a surface-engineered Co-Ni3N/NF heterostructure electrode with superhydrophilic and superaerophobic properties, optimized gas-liquid-solid three-phase contact area, and achieved high current densities. The results demonstrate that constructing a heterostructure with good wettability and gas repellency can enhance the efficiency of electrocatalysts for large-scale water electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Fangfang Liu, Yanli Fang, Jianwei Ren, Hui Wang
Summary: The binder-free carbon cloth-based composites, with their porous structures and surface properties, have great potential as capacitor electrodes, offering larger capacities and low resistances. In this study, quinone-rich N-doped carbon spherical composites loaded on carbon cloth were used as electrodes for electric double-layer capacitors. The Q-NCS-CC electrode composite achieved a high area-specific capacitance of 1863 mF cm(-2) at 1 mA cm(-2), with surface capacitance contributing 53% at a scan rate of 50 mV s(-1). Further evaluation showed that the Q-NCS-CC composite-incorporated EDLC delivered a capacitor of 707.76 mF cm(-2) at 8 mA cm(-2). Long-term stability tests exhibited a cycling capacitance retention of 97% at 15 mA cm(-2) after 20,000 cycles.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Chemistry, Physical
Mingqi Jia, Xin Qin, Xinghao Zhang, Jiefei Wang, Susu Liu, Lei Wang, Zhen Zhang, Naiqian Miao, Guangshen Jiang, Yanyan Li, Hui Wang
Summary: A novel polymer network binder, composed of hydrogenated carboxyl nitrile rubber (HXNBR) and guar gum (GG) through chemical crosslinking, is developed to address the volume expansion issue of Si anode. The binder exhibits excellent electrochemical performance with high discharge capacity and ultrastable capacity, surpassing most of the reported polymer binders. This work provides a new approach for the commercialization of Si anodes.
JOURNAL OF POWER SOURCES
(2023)
Article
Biochemistry & Molecular Biology
Yanqi Ban, Hui Wang, Zixuan Xiao, Lishui Sun, Qingyan Pan, Yingjie Zhao
Summary: A carbon-carbon-linked, ultrathin, two-dimensional (2D) polymer film was successfully prepared at the air/water interface through photochemically induced [2 + 2] cycloaddition. The film exhibited continuity and free-standing properties with a large area. Characterization techniques including transmission electron microscopy (TEM) and atomic force microscopy (AFM) confirmed the ultrathin film morphology, while Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) verified the successful photo-induced [2 + 2] polymerization.
Article
Chemistry, Physical
Kaiyi Chen, Liang Zhang, Xin Huang, Fuchun Zhang, Gangqiang Zhu, Qizhao Wang
Summary: Zr-doped BiVO4 photoanodes modified with CoF2 co-catalyst were synthesized by a two-step hydrothermal and calcination method. The photocurrent density of the prepared Zr-CoF2/BiVO4 photoanode reached 3.6 mA/cm2 at 1.23 V vs. RHE (AM 1.5 G). The excellent performance is attributed to the loading of co-catalyst and the formation of heterojunction, which improve carrier transfer efficiency and water splitting yield. The Co2+ site in the CoF2 co-catalyst demonstrates exceptional water oxidation activity, while Zr doping enhances charge separation and conduction, reducing electron-hole recombination rate and enhancing photocurrent and oxygen release. This research provides an effective method for solar water decomposition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yang Zhang, Kuanshi He, Nan Han, Lei Wang, Jingwei Huang, Houde She, Yan Bai, Qizhao Wang
Summary: In this study, a CuMOF and graphite phase carbon nitride (g-C3N4) composite was synthesized and used for the degradation of tetracycline hydrochloride (TC) in water under simulated solar light irradiation with the assistance of peroxymonosulfate (PMS). The introduction of CuMOF into g-C3N4 improved the charge separation of g-C3N4 and accelerated the activation of PMS. The degradation performance of g-C3N4/CuMOF was studied through various factors, and the photocatalytic experiment demonstrated a TC degradation rate of 90% within 30 min in the presence of PMS. The study also investigated the reaction mechanism of the g-C3N4/CuMOF/PMS system using scavenging experiments and electron spin resonance (ESR) technology. This work provides a promising approach for the rational design of high-performance and low-cost photocatalysts for environmental remediation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Minghui Wang, Shan Ji, Hui Wang, Vladimir Linkov, Xuyun Wang, Rongfang Wang
Summary: Ni/Co diatomic clusters supported on nitrogen-doped carbon foams were prepared to enhance zinc-air battery catalysts by increasing surface active sites. The effect of Co and Ni atoms on the structure of carbon foams was investigated, and the presence of metal atoms in N-doped carbon foams was confirmed. The introduction of Ni atoms promoted graphitization, while Co doping resulted in an increase in interlayer spacing. Ni-Co co-doped carbons exhibited superior electrocatalytic performance for oxygen reduction and oxygen evolution reactions. The developed material as a catalyst exhibited a high discharge power density of 138 mW cm(-2) in a zinc-air battery cell.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Minhui Li, Xiao Xu, Hui Wang, Xuyun Wang, Xianguo Ma, Jianwei Ren, Rongfang Wang
Summary: Using polysulfide electrocatalysts can improve the durability of lithium-sulfur batteries by controlling the precipitation and dissolution of lithium sulfide. In this study, a FeCoP quantum dot-decorated nitrogen-doped carbon nanosheet composite was prepared as a sulfur host for lithium-sulfur batteries. The optimal sulfur host showed bidirectional catalytic effects, greatly enhancing sulfur reduction during discharge and Li2S oxidation during charging. The assembled batteries exhibited high capacity and excellent cycling performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Inorganic & Nuclear
Yanli Fang, Xianguo Ma, Jianwei Ren, Hui Wang
Summary: The rational design and controllable synthesis of high-performance energy storage materials are important measures to address the growing demand for energy storage devices. This work involves the growth of a fishnet-like Fe2O3 nanorod@oxygen-rich carbon layer structure directly onto carbon fiber cloth as a binder-free electrode for symmetric capacitors.
DALTON TRANSACTIONS
(2023)
Article
Nanoscience & Nanotechnology
Ruili Gao, Shan Ji, Fanghui Wang, Kunpeng Wang, Hui Wang, Xianguo Ma, Vladimir Linkov, Xuyun Wang, Rongfang Wang
Summary: In this study, perylenequinone was used to enhance polysulfide chemisorption and conversion on cobalt-containing Li-S battery cathodes. The newly prepared cathode material exhibited excellent rate and cycling performances.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Minghui Wang, Jianwei Ren, Hui Wang, Xuyun Wang, Rongfang Wang
Summary: Rational selection and tuning of catalytic components can lead to the development of low-cost and high-performance bifunctional electrocatalysts. In this study, CeO2 was composited with Fe/N-doped carbon foam to improve the electrocatalytic performance for the oxygen evolution reaction (OER). The excitation of oxygen vacancies in CeO2 accelerated the migration of oxygen species and enhanced the oxygen storage/release capacity of the catalyst. The size effect of CeO2 particles enabled the timely discharge of gas bubbles from the reaction system, improving the OER kinetics. The CeO2-Fe2N/NFC-2 catalyst exhibited good OER performance and ORR electrocatalytic activity.
Article
Chemistry, Inorganic & Nuclear
Guoxu Zhou, Denghe Gao, Yucheng Dong, Lan Wang, Hui Wang, Xuyun Wang, Vladimir Linkov, Rongfang Wang
Summary: In this study, Fe/Ni NWs/NF catalysts with abundant active surface sites were prepared by hydrothermal and electrochemical deposition. The synthesized electrode possessed a 3D layered heterostructure and crystalline-amorphous interfaces, containing amorphous Fe nanosheets, which demonstrated excellent activity in OER.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Qing Dong, Haoran Wang, Fangfang Liu, Jianwei Ren, Hui Wang, Xuyun Wang, Rongfang Wang
Summary: In this work, a Mott-Schottky Cu-NCs-Co-NCs/NPCF catalyst with a built-in electric field was prepared by anchoring Cu/Co bimetallic ensembles on three-dimensional nitrogen-doped porous carbon nanosheet frameworks. The optimized Cu-NCs-Co-NCs/NPCF catalyst exhibited a low Tafel slope and promising potential in the oxygen reduction electrocatalytic and oxygen evolution electrocatalytic reactions under alkaline conditions, with a high onset potential and improved reaction kinetics. Moreover, the nitrogen-doped carbon nanosheet framework with a hierarchical porous structure and high specific surface area accelerated mass transport.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Xiaojuan Zhao, Yifan Rui, Yan Bai, Jingwei Huang, Houde She, Jianhong Peng, Qizhao Wang
Summary: BiVO4 is a promising material for water oxidation, but its film has limitations that affect its performance. In this study, a simple electrodeposition method was used to modify the BiVO4 film under light assistance, resulting in improved photoelectrochemical performance and photocurrent density. This research opens up new research pathways for applications in photovoltaics and photoelectrochemical water splitting.
