Article
Materials Science, Multidisciplinary
Lina Zhou, Rong Wu, Youquan Jiang, Zhenjiang Li, Shunhang Wei
Summary: Broad-spectrum heterogeneous 1T/2H MoSe2 homojunction nanosheets were prepared with controlled ratios of 1T and 2H phases, increasing photocatalytic degradation activity, especially with the presence of 1T phase. The main active species for methylene blue degradation were identified as center ·OH and center ·O-2(-) radicals through radical trapping experiments. The proposed photocatalytic mechanism of 1T/2H MoSe2 was based on photocatalytic activity and band structure results.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Environmental Sciences
Rongrong Song, Ninghua Chen, Biao Han, Sishan Yu, Yue Wang, Kun Liu, Zhangfa Tong, Hanbing Zhang
Summary: Br/Bi2WO6 prepared by microwave hydrothermal method displayed superior photocatalytic activity due to increased specific surface area, wide UV-vis light absorption range, and high separation efficiency of photogenerated charge carriers originating from Br doping and microwave heating.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Zhiying Bai, He Zhang, Jiaqi He, Dawei He, Jiarong Wang, Guili Li, Jinxuan Bai, Kun Zhao, Xiaohui Yu, Yongsheng Wang, Xiaoxian Zhang
Summary: This study investigates the effect of pressure on the carrier transport performance and relaxation process of MoSe2 using a spatiotemporal resolved pump-probe setup. The results show that pressure can effectively tune the transport performance, enhancing the carrier mobility and shortening the carrier lifetimes. The combination of enhanced mobility and shortened lifetimes holds great potential for optoelectronic applications under extreme conditions.
Article
Chemistry, Physical
Jing Wang, Yanfei Hou, Xiangzhao Zhang, Ziwei Xu, Guiwu Liu, Shahid Hussain, Guanjun Qiao
Summary: This study investigates the application of 3d transition metal (TM) decorated MoSe2 monolayer as chemiresistive sensors using first-principles calculations. The results show that only Co and Ni elements can be stably decorated on the MoSe2 monolayer surface. The TMs with high d-band center location can enhance the adsorption energy of MoSe2 monolayer towards four gas molecules, making Co-MoSe2 and Ni-MoSe2 monolayers promising candidates for H2 and C2H2 detectors, respectively.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yi Wang, Xinyan Xiao, Tingting Ding, Mingli Lu
Summary: The study synthesized a flower-like mixed 1T-2H phase MoSe2 and fabricated a dual Z-scheme AgI/1T-2H MoSe2/Bi4O5Br2 composite with a 0D/3D hierarchical structure, which exhibited superior photocatalytic activity for degrading RhB and TC compared to other composites. The enhanced performance is attributed to better light absorption, abundant active sites, and superior charge carrier mobility and separation efficiency resulting from a synergistic effect of structural coupling and energy band matching.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Tong Liang, Zhiyan Feng, Dongbin Wang, Long Lin
Summary: Nowadays, it is increasingly important to detect more hazardous sulphur gases (H2S, SO2) and there is a need for a readily fabricated, low-cost, high-performance 2D material. This study investigated the selective detection of H2S and SO2 by MoSe2 monolayers and Pt-doped MoSe2 monolayers using first-principles calculations. The results show that the dopant enhances the activity of the material, creating solid interactions with the material surface, and Pt-doped MoSe2 monolayers have the potential to selectively detect these toxic gases due to their different conductive tendencies. This work provides insights into the potential application of unexplored TMDs as chemically resistant sensors for the detection of poisonous gases, which may be of importance for environmental monitoring and industrial manufacturing.
Article
Chemistry, Physical
Woo-Sung Jang, Yeongrok Jin, Young-Hoon Kim, Sang-Hyeok A. Yang, Seon Je Kim, Jung A. Hong, Jaeyoon Baik, Jaekwang Lee, Hangil Lee, Young-Min Kim
Summary: The addition of transition metal dopants into metal oxide nanoparticles is a universal strategy to engineer their electronic and chemical properties. This study directly resolves the site-selective doping behaviors of Cr and Fe in SnO2 at the atomic scale, revealing their different roles in photocatalytic activities.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Tiantian Zhang, Yifei Cai, Yongbing Lou, Jinxi Chen
Summary: The study successfully prepared 1T-2H MoSe2/MAPbI(3) composites with excellent photocatalytic hydrogen production performance and good long-term stability. 1T-2H MoSe2 as a cocatalyst can effectively enhance electron transfer and promote the separation of photogenerated charge.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Rui Li, Tongtong Chen, Jingwen Lu, Huiling Hu, Han Zheng, Pengfeng Zhu, Xiangliang Pan
Summary: Photocatalytic and photothermal disinfection using metal-ion-doped MOFs shows promising potential for tackling environmental microbial contamination. In this study, Co2+-doped ZIF-8 with a 5% doping concentration exhibits the highest sterilization efficiency against E. coli under simulated sunlight due to enhanced photothermal effect and generation of multiple ROS. The findings provide insights into the application of metal-ion-doped MOF photocatalysts for disinfection of environments with pathogenic microorganisms.
Article
Chemistry, Physical
Nannan Chen, Jing Cao, Minna Guo, Chang Liu, Haili Lin, Shifu Chen
Summary: This study reported a NiO/RP composite that significantly improved the photocatalytic activity of red phosphorus for efficient hydrogen production. By utilizing a Z-scheme mechanism to facilitate photocarriers separation, it provides a potential strategy to enhance the photocatalytic activity of red phosphorus for hydrogen evolution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Pierre G. Ramos, Juan Espinoza, Luis A. Sanchez, Juan Rodriguez
Summary: This study investigates the use of transition metal-doped zinc oxide/reduced graphene oxide (ZnO/rGO) nanostructures for photocatalytic applications. A cost-effective electrospinning-assisted hydrothermal method is proposed to synthesize these nanostructures. The results show that the doping of transition metals and the presence of rGO improve the photocatalytic activity of ZnO, by enhancing the separation of photogenerated electron-hole pairs and inhibiting their recombination. Despite challenges in controlling the doping process, transition metal-doped ZnO/rGO nanostructures show promise for efficient and sustainable photocatalytic applications in the future.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Jiahui Li, Keyan Li, Jun Du, Hong Yang, Chunshan Song, Xinwen Guo
Summary: The incorporation of transition metals in polymeric carbon nitride is an effective strategy to enhance its photocatalytic CO2 reduction activity. By controlling the content of metal-organic frameworks during pyrolysis, the photocatalytic activity of metal-modified carbon nitride is optimized. The optimized materials show significantly enhanced CO evolution rates, which can be attributed to various factors such as increased specific surface area and visible light absorption.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
Yang Zheng, Xing Li, Mingli Zheng, Gang Cheng, Yunlong Zi, Shaobo Cheng, Hongzhi Cui, Xiaoyi Li
Summary: This study investigates the use of molybdenum selenide nanosheets as intermediate layers for improving droplet-based TENG performance. Precise energy analysis is carried out and an all-solid supercapacitor is integrated with the TENG. The study provides new insights into intermediate-layer materials' selection and action mechanisms, and fills a gap in the research on a precise model of theoretical energy conversion efficiency calculation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yiwen Xie, Wenjie Ding, Jianquan Zhao, Jiaying Luo, Rui Lu, Tian Shang, Yang Xu, Dongmei Jiang, Qingfeng Zhan
Summary: Manganese ion doping has potential in the field of photocatalysis, but its effect on simple structure semiconductor is not well understood. In this study, high-efficiency manganese doped AgBr photocatalysts were prepared via an ice bath deposition process and characterized. The optimized sample showed significantly improved degradation activity compared to pure AgBr, attributed to the lattice strain, charge distribution, and intermediate energy level induced by Mn ions. This study provides insightful significance for the general application of doping engineering.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
N. Siminel, K. Sushkevich, S. Aazou, A. Micu, A. Siminel, Z. Sekkat, L. Kulyuk
Summary: The temperature dependence of the luminescence spectra of MoSe2 crystals intercalated with I2 molecules has been investigated. The luminescence spectrum consists of a zero-phonon doublet and its phonon replicas, caused by the recombination of excitons bound on iodine molecules embedded in the van der Waals gap. The rate of radiative recombination of the B state is found to be 76 times higher than the A state.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Engineering, Environmental
Haoshan Nan, Shuhui Lv, Zijin Xu, Yu Feng, Yuxin Zhou, Miao Liu, Tianle Wang, Xiaojuan Liu, Xiaoying Hu, Hongwei Tian
Summary: The cocktail effect was induced through electronic structural design to optimize energy storage capability and oxygen reduction reaction in high-entropy perovskite oxides (HEPs). The yolk-shell La0.7Bi0.3Mn0.4Fe0.3Cu0.3O3 HEP exhibited the highest catalytic activity and specific capacity. A material design idea for HEPs regulating ions as electronic donors and acceptors was proposed.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Jinyu Bao, Wei Quan, Yunqi Ning, Hanbing Wang, Qun Wei, Lingzhi Huang, Weijin Zhang, Yongxiang Ma, Xiaoying Hu, Hongwei Tian
Summary: A series of LaNi1-xFexO3/g-C3N4 heterojunction photocatalysts were prepared by a simple wet chemical method and their structural, morphological, optical, electrochemical properties, as well as their photocatalytic degradation performance for tetracycline and Cr(VI), were investigated. The LaNi0.8Fe0.2O3/g-C3N4 composite photocatalysts exhibited excellent photocatalytic performance due to the synergy of doping and constructing heterojunctions. Doping of Fe ions increased the concentration of oxygen vacancies, favoring the formation of electron traps, while the type-II heterojunction formed between LaNi0.8Fe0.2O3 and g-C3N4 effectively enhanced the separation and transfer of photoinduced carriers, thereby promoting photocatalytic activity. The LaNi0.8Fe0.2O3/g-C3N4 photocatalyst showed long-term stability after three cycles of use, and a photocatalytic mechanism was proposed.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Xucong Sun, Zeshuo Meng, Zeyu Hao, Zhengyan Du, Jian Xu, Haoshan Nan, Wei Shi, Fanda Zeng, Xiaoying Hu, Hongwei Tian
Summary: This study successfully develops a novel electrode material LaMnO3@NiCo2O4/carbon cloth, which achieves excellent supercapacitor performance through its unique nanostructure and synergistic effect, expanding the application value of energy density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Wei Shi, Zeshuo Meng, Zijin Xu, Jian Xu, Xucong Sun, Haoshan Nan, Chenxu Zhang, Shansheng Yu, Xiaoying Hu, Hongwei Tian
Summary: A new strategy for controllable modulation of vacancy content by regulating the number of hydrogen bonds is proposed in this study, enabling the controlled introduction of abundant vacancies. Hydrogen bonds are formed through micro-design of the carbon chain structure to stabilize F ions during the synthesis process, and their breakage leads to the generation of vacancies. The carbon chain length can effectively control the number of hydrogen bonds, thereby microregulating the number of vacancies. The unique microstructural design results in a reconstructed nickel fluoride alkoxide electrode with an ultra-high specific capacitance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Wei Quan, Jinyu Bao, Xiangjun Meng, Yunqi Ning, Yanan Cui, Xiaoying Hu, Shansheng Yu, Hongwei Tian
Summary: In this study, a novel photocatalyst g-C3N4/Bi@Bi2WO6 composite was prepared by a simple wet chemical method, showing excellent photocatalytic performance. The separation pathway of photoinduced charges through the interface was investigated, and it was confirmed that a Z-scheme charge transfer route was followed. The optimized composite photocatalyst exhibited a photocatalytic hydrogen production rate 2.29 times higher than that of pure g-C3N4, and the photocatalytic degradation rates of RhB and TC were 7.55 times and 1.92 times that of pure Bi2WO6, respectively. The enhanced photocatalytic performances were attributed to the synergistic effect of the 2D/2D coupling interface and the deposited metal Bi, which facilitated efficient charge separation, fast charge migration, and provided a large reaction surface area. Additionally, the surface plasmon resonance effect of metal Bi enhanced visible light absorption and broadened the light absorption range to the full spectrum. This study provides a new idea for the design of high-performance Z-scheme photocatalysts for highly efficient utilization of solar energy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jiayi Zhang, Zhengyan Du, Tingyu Yan, Fanda Zeng, Zijin Xu, Jian Xu, Zeshuo Meng, Xiaoying Hu, Jingxiang Zhao, Hongwei Tian
Summary: The energy density of supercapacitors can be improved by rapidly reconstructing the electrode materials' surface in an alkaline medium. Transition metal sulfides (TMSs), such as Co9S8, have excellent structural characteristics and are widely used as energy storage electrode materials. However, the enhancement of Co9S8 reconstruction ability induced by Se doping has not been well studied.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haoshan Nan, Kexin Song, Jian Xu, Shuhui Lv, Shansheng Yu, Xiaoying Hu, Hongwei Tian
Summary: High-entropy perovskite oxides (HEPOs) have unstable energy storage in high-power battery-supercapacitor hybrid devices. This study reveals the dual-ion energy storage mechanism of La0.7Bi0.3Mn0.4Fe0.3Cu0.3O3 nano-HEPO in aqueous alkaline BSH devices. The deintercalation of hydrogen cations is hindered during discharge due to surface filling with oxygen vacancies, causing irreversible phase transition and capacity deterioration.
Article
Engineering, Environmental
Zhengyan Du, Zeshuo Meng, Zeyu Hao, Shansheng Yu, Xiaoying Hu, Hongwei Tian
Summary: This study proposes a novel concept of internal potential engineering, which aims to optimize the internal potential by directly adjusting the electronic structure of the host material. As a proof of concept, the charge distribution of Fe5Ni4S8 is modulated, resulting in the optimization of its internal potential and enhanced surface reconstruction reaction. The optimized material shows high specific capacitance and energy density, providing a promising pathway for the design of high-performance electrode materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiaoying Hu, Encai Tian, Bo Wang, Xiaotong Zhou, Liang Qiao, Shujie Liu, Zeshuo Meng, Hongwei Tian
Summary: In this study, flower-like heterogeneous La2CoMnO6@NiCo2O4 materials were synthesized on a nickel foam via interface and morphological engineering. The as-constructed material exhibited excellent supercapacitor performance with a high specific capacitance, making it suitable for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Wei Shi, Chao Jiang, Zeshuo Meng, Jian Xu, Shulong Wang, Haoshan Nan, Yutong Zhao, Shansheng Yu, Xiaoying Hu, Hongwei Tian
Summary: Transition metal electrode materials play a crucial role in high-energy and power-density rechargeable energy devices. In this study, a series of Co-doped nickel hydroxyfluorides (Co-Ni(OH)F) were developed as novel electrode materials with improved charge storage ability at different current densities. The introduction of Co not only regulated the electronic structure and surface morphology but also enhanced the electrochemical activities through abundant redox processes. The optimized Co-Ni(OH)F (Co=20%) electrode exhibited an ultrahigh specific capacity and superior capacity retention rate, making it a promising candidate for advanced energy devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Le Li, Yucheng Chen, Can Zhang, Ziqi Yuan, Ping Wang, Haoshan Gao, Xiaoying Hu, Yafei Zhao
Summary: In this study, the adsorption properties of Hg0 on nonmetal-doped monolayer MoS2 were investigated using first principles study. Acceptor-doped MoS2 showed strong adsorption capacity for Hg0, while the same group and donor-doped systems did not. The adsorption strength of Hg0 in acceptor-doped system decreased with the increase of valence electrons, with 6 valence electrons being the critical value.
Article
Chemistry, Applied
Zhengyan Du, Zeshuo Meng, Chao Jiang, Chenxu Zhang, Yanan Cui, Yaxin Li, Chong Wang, Xiaoying Hu, Shansheng Yu, Hongwei Tian
Summary: The reconstruction of pentlandite by promoting pyrrolidone was investigated, leading to the formation of highly active NiOOH. The reconstructed surface exhibited more delocalized electronic structures, promoting the kinetics of the oxygen evolution reaction. This study provides insights into improving the catalytic activity of bimetallic Fe-Ni-based catalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Fanda Zeng, Xiliang Gong, Zijin Xu, Zhengyan Du, Jian Xu, Ting Deng, Dong Wang, Yi Zeng, Shansheng Yu, Zeshuo Meng, Xiaoying Hu, Hongwei Tian
Summary: This study investigates the protective effect of by-products deposited on the surface structure of cathode material in aqueous zinc-ion hybrid supercapacitors (ZHSs), and proposes the criterion of selecting voltage window based on whether the by-product layer is broken or not. A flat pouch cell with a wide voltage window is fabricated, achieving high energy density and good cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Zeyu Hao, Zhengyan Du, Ting Deng, Dong Wang, Yi Zeng, Shansheng Yu, Zeshuo Meng, Xiaoying Hu, Xiufeng Hao, Hongwei Tian
Summary: A novel strategy was developed to modify high-entropy perovskite fluorides using pyrrolidone, which resulted in improved catalytic activity. The modified electrocatalyst showed lower energy barrier and enhanced conductivity, leading to superior catalytic activity.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Zeyu Hao, Zhengyan Du, Ting Deng, Dong Wang, Yi Zeng, Shansheng Yu, Zeshuo Meng, Xiaoying Hu, Xiufeng Hao, Hongwei Tian
Summary: A novel strategy was developed to enhance the catalytic activity of high-entropy perovskite fluorides for the oxygen evolution reaction. Surface modification with pyrrolidone effectively reduced the energy barrier and improved the catalytic activity. The optimized electrocatalyst showed superior performance at lower potentials, making it a promising candidate for future OER catalyst syntheses.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
