Article
Chemistry, Physical
Yuan Chang, Panlong Zhai, Jungang Hou, Jijun Zhao, Junfeng Gao
Summary: The research shows that Se vacancies in PtSe2 can significantly enhance the efficiency of the hydrogen evolution reaction and also exhibit good catalytic properties for the oxygen evolution reaction. Defective PtSe2 produced via a chemical vapor deposition process is more efficient than Pt foils, indicating its potential for widespread applications.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Chaofeng Chang, Yuhua Xie, Fang Luo, Shaowei Zhou, Zehui Yang
Summary: In this work, tungsten atoms were introduced to metallic iridium to weaken the s-d hybridization of the Ir-Ir bond, resulting in electrophilic O* species that are favorable for nucleophilic attack by H2O. This leads to a significant decrease in the energy barrier for the formation of OOH* species and a 3.7-fold higher turnover frequency (TOF) for the iridium-tungsten (IrW) electrocatalyst compared to metallic Ir in acidic oxygen evolution reaction (OER) catalysis. Additionally, the IrW electrocatalyst exhibits a TOF of 10.1 s-1 at an overpotential of 100mV in acidic hydrogen evolution reaction (HER) test, which is 7.6 times higher than Pt/C and metallic Ir. The IrW electrocatalyst only requires 1.52V to achieve a current density of 10 mA cm-2 in acidic overall water splitting.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
M. P. Aparna, Raghu Chatanathodi
Summary: Two-dimensional rhenium disulfide (ReS2) has gained significant attention as a potential electro-catalyst. Surface modifications, including single-atom doping and creation of lower dimensional nanostructures, enhance its catalytic activity. In this study, two structurally distinct ReS2 nanoribbons showed enhanced catalytic activity for oxygen reduction and hydrogen evolution compared to monolayer ReS2. The edge activity of finite sized nanostructures, combined with stability in acidic media and methanol tolerance, make ReS2 nanoribbons promising for electrochemical applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Azhar Mahmood, Dequan He, Chuhao Liu, Shamraiz Hussain Talib, Bolin Zhao, Tianren Liu, Ying He, Zhongqian Song, Lijuan Chen, Dongxue Han, Li Niu
Summary: Defects in the crystal structure of nanomaterials greatly affect their catalytic activity. This study focuses on controlled synthesis of ultrathin porous Ir-Cu nanosheets with selectively iridium (Ir) rich defects to enhance their performance in the oxygen evolution reaction (OER). X-ray absorption spectroscopy reveals that the oxidized states of Ir in defects significantly impact the electronic structure and lower the energy barrier. As a result, the porous Ir-Cu nanosheets exhibit improved OER activity under acidic conditions.
Article
Engineering, Environmental
Chun-Lung Huang, Zi-Fan He, Jui-Yu Pai, Yu-Hsiang Yang, Wen-Yang Jao, Chi-Yu Lai, Yi-Ting Lu, Hao-Yu Ku, Chi-Chang Hu
Summary: A non-precious-metal medium entropy sulfide embedded in sulfur-doped polyacrylonitrile-derived carbon fiber has been designed to maximize the synergistic effects and exhibits superior trifunctional electrocatalytic performances. The catalyst achieves low overpotentials for both oxygen and hydrogen evolution reactions with a minor efficiency decay under continuous operation. Moreover, a zinc-air battery with the catalyst-coated air electrode demonstrates extraordinary energy efficiency for over 60 hours.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chun-Lung Huang, Kotaro Sasaki, Duraisamy Senthil Raja, Cheng-Ting Hsieh, Yen-Ju Wu, Jing-Ting Su, Chih-Chieh Cheng, Po-Yin Cheng, Shin-Hong Lin, YongMan Choi, Shih-Yuan Lu
Summary: Twin boundaries significantly enhance the performance of copper-based catalysts, reducing overpotentials for electrolytic water splitting and improving stability. The formation of active (CuO2-)-O-III at low overpotentials enhances the efficiency of the oxygen evolution reaction, while geometric and electronic effects induced by the twin boundaries lead to a remarkable improvement in hydrogen evolution reaction activity.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Lei Yang, Hongye Qin, Zihao Dong, Tongzhou Wang, Guichang Wang, Lifang Jiao
Summary: The study focuses on sulfur-doped nanorod cobalt telluride grown on carbon cloth for catalyzing OER, showing extraordinary catalytic activity. Sulfur doping can tailor the electronic structure of active species and optimize free energy, accelerating OER kinetics.
Article
Chemistry, Physical
Qirun Wang, Xiaoqiang Du, Xiaoshuang Zhang
Summary: The study focused on the preparation and characterization of NiCoM (M = P, S, Se, O)-Ni3S2-MoS2 hybrid material for electrochemical reactions. The NiCoP-Ni3S2-MoS2 exhibited high activity for the hydrogen evolution reaction, and the NiCoSe-Ni3S2-MoS2 showed excellent performance for the oxygen evolution reaction. The findings provide insights into the development of efficient and cost-effective catalysts for water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Leyla Najafi, Reinier Oropesa-Nunez, Sebastiano Bellani, Beatriz Martin-Garcia, Lea Pasquale, Michele Serri, Filippo Drago, Jan Luxa, Zdenek Sofer, David Sedmidubsky, Rosaria Brescia, Simone Lauciello, Marilena Zappia, Dipak Shinde, Liberato Manna, Francesco Bonaccorso
Summary: The research focuses on synthesizing metallic rutile VO2 (VO2 (R)) nanosheets by topochemical transforming liquid-phase exfoliated VSe2, resulting in 2D non-layered materials with porous morphology and high catalytic activity for water splitting reactions in both acidic and alkaline media.
Review
Chemistry, Inorganic & Nuclear
Kayode Adesina Adegoke, Nobanathi Wendy Maxakato
Summary: This study presents recent advancements in the application of porous metal oxide electrocatalysts for energy conversion technologies. It discusses the evolution of porous material sciences, the importance of oxides in electrocatalysis, and the synthesis and analysis techniques for porous metal oxides. Additionally, it summarizes the fundamental concepts, mechanisms, performances, challenges, and prospects of different energy conversion technologies, emphasizing the critical role of oxygen defects.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Physical
Zhongsong Zhuo, Jiali Zhu, Aixiang Wei, Jun Liu, Ningqi Luo, Yu Zhao, Zhen Liu
Summary: In this study, two-dimensional layered rhenium disulfide nanosheets were grown on a carbon cloth substrate with varying precursor molar ratios. It was found that a molar ratio of CS(NH2)2 to NH4ReO4 of 10:1 resulted in the optimal HER activity with low overpotential and small Tafel slope. Active sites for the 2D ReS2 nanosheets were identified to exist on both the edge sites and basal planes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Seunghwan Jo, KeonBeom Lee, Jung Inn Sohn
Summary: This study presents metallic selenium as an electrocatalyst for water electrolysis for the first time, demonstrating its excellent electrocatalytic performance and stability in alkaline electrolyte.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Jie Wang, Haicheng Xuan, Lingxin Meng, Xiaohong Liang, Yuping Li, Jie Yang, Peide Han
Summary: In this study, N and S elements were doped on a core-shell structured Co3O4@NiMoO4 using chemical vapor deposition methods, resulting in a layered N, S-Co3O4@NiMoO4/NF400 nano-heterojunction electrocatalyst. The close contact between Co3O4 nanowires and N, S co-doped NiMoO4 cubic arrays facilitates electron transfer, leading to enhanced water splitting performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Shuangxiong Liao, Tieqi Huang, Weiying Wu, Ting Yang, Qianqian Hou, Shangbin Sang, Kaiyu Liu, Yahui Yang, Hongtao Liu
Summary: High-entropy oxides (HEOs), as a common type of high-entropy materials, have limited active sites due to their high crystallization. In this study, a surface activation strategy was proposed to enhance the electrocatalytic activity of HEOs by introducing abundant surface oxygen vacancies using resin templating and temperature regulation. The modulated (Fe0.27Ni0.35Co0.24Cr0.10Mn0.04)2O3-δ HEO exhibited a stable structure, large electrochemical surface area, and robust electrocatalytic activity towards both oxygen and hydrogen evolution reactions. The assembled water splitting cell achieved a low voltage of 1.55 V to achieve 10 mA cm-2 current density, outperforming commercial noble metal electrocatalysts. This work provides a new approach for designing structure-stable HEOs for efficient electrocatalytic applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhiyuan Zhang, Zhihong Zhu
Summary: Doping CoSe1.5S0.5 can achieve the lowest overpotentials for both HER and OER, demonstrating excellent catalytic performance. Modulating the HER and OER catalytic performances can be achieved by changing the d band center of Co and hybridized orbitals.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Zhaowu Wang, Haipeng Ji, Jian Xu, Xinghui Hou, Jumpei Ueda, Setsuhisa Tanabe, Shasha Yi, Ying Zhou, Deliang Chen
INORGANIC CHEMISTRY
(2020)
Article
Energy & Fuels
Keke Gao, Dengchao Xia, Haipeng Ji, Yunxiang Chen, Liying Zhang, Yu Wang, Shasha Yi, Ying Zhou, Zongtao Zhang, Deliang Chen, Yanfeng Gao
Summary: Hierarchical porous carbon nanonet flakes decorated with MoS2 effectively address the issues of LiPS dissolution and shuttling in lithium-sulfur batteries, providing high performance and stability.
Article
Chemistry, Physical
Ze-Yuan Wang, Hua-Min Li, Sha-Sha Yi, Ming-Zhu You, Hui-Juan Jing, Xin-Zheng Yue, Zong-Tao Zhang, De-Liang Chen
Summary: This study presents a high-performance Fe2O3-based photoanode achieved by coating FeCo-MOF nanolayers on Fe2O3 nanoarrays, which effectively enhances the surface states of the photoanode and boosts the water oxidation kinetics.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Shiyu Hu, Guohao Yan, Liying Zhang, Shasha Yi, Zongtao Zhang, Yu Wang, Deliang Chen
Summary: In this study, ChlCu-modified ZnO nanorods were prepared and treated with EDTA to improve their photoactivity and adsorption selectivity to Cu2+. The optimal E-ChlCu/ZnO sample showed excellent colorimetric detection performance for Cu2+.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Xin-Yu Yang, Zong-Wei Chen, Xin-Zheng Yue, Xin Du, Xing-Hui Hou, Li-Ying Zhang, De-Liang Chen, Sha-Sha Yi
Summary: A structural engineering strategy is used to coat a ultrathin CoFe bimetal-organic framework (CoFe MOF) layer over a BiVO4 photoanode, resulting in boosted charge separation and transfer. The optimized BiVO4/CoFe MOF(NA) photoanode exhibits a photocurrent density of 3.92 mA cm(-2) at 1.23 V versus reversible hydrogen electrode (RHE), which is 6.03 times higher than that of pristine BiVO4, due to improved efficiency of charge transfer and separation. The CoFe MOF(NA) prolongs charge recombination lifetime and shifts the onset potential negatively, enhancing the performance of the photoanode for solar H-2 production.
Article
Nanoscience & Nanotechnology
Xin-Zheng Yue, Ping Tang, Xin Du, Wen-Jing Yi, Zhong-Yi Liu, Shu-Juan Wang, Sha-Sha Yi
Summary: By using a facile hydrothermal strategy, ultrathin Al-incorporated Co LDH nanosheets were constructed on carbon cloth (CC). Compared to Co LDH/CC, the optimized Co2Al1 LDH/CC displayed significantly improved OER performance, with low overpotentials of only 171 and 200 mV to reach current densities of 10 mA cm-2 in alkaline and neutral media, respectively, as well as good stability over an extended period. The introduced Al3+ and CC support synergistically steered the morphology of Co2Al1 LDH/CC while increasing the electrochemical active sites.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Zaiba Zafar, Sha-Sha Yi, Jin-Peng Li, Chuan-Qi Li, Yong-Fa Zhu, Amir Zada, Wei-Jing Yao, Zhong-Yi Liu, Xin-Zheng Yue
Summary: This review discusses the impact of defect architecture on photocatalytic activity and emphasizes the importance of defect engineering in the design of modern photocatalysts. By tuning the electronic microstructure and surface morphologies of semiconductors, efficiency of photocatalysts can be improved.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Qianqian Tian, Shasha Yi, Chuanqi Li, Yan Liu, Zhulin Niu, Xinzheng Yue, Zhongyi Liu
Summary: The study successfully integrated a defective TiO2/MoP heterojunction with highly conductive carbon cloth to construct a panel reactor with charge transfer channels, effectively boosting H-2 generation rate and photocatalytic activity. This work paves the way for optimizing photocatalytic performance by developing novel non-powder-based photocatalyst systems.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Mingzhu You, Shasha Yi, Dengchao Xia, Huijuan Jing, Haipeng Ji, Liying Zhang, Yu Wang, Zongtao Zhang, Deliang Chen
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Chuan-Qi Li, Sha-Sha Yi, De-liang Chen, Yan Liu, Ya-Jie Li, Si-Yu Lu, Xin-Zheng Yue, Zhong-Yi Liu
JOURNAL OF MATERIALS CHEMISTRY A
(2019)