JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
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IF 3.368
Chao Jin,Guanglei Liu,Lianhai Zu,Yao Qin,Jinhu Yang
In this article, we report a novel Ag@Ag 3 PO 4 @ZnO ternary heterostructures synthesized through a three-step approach. Firstly, single-crystalline Ag nanorods are fabricated and served as the templates for subsequent Ag 3 PO 4 deposition. Secondly, Ag 3 PO 4 crystals are grown around Ag core nanorods through a solution co-precipitation process, leading to the Ag@Ag 3 PO 4 binary heterostructures. Finally, ZnO nanorod arrays on the surface of the Ag@Ag 3 PO 4 heterostructures are realized via a seeded growth strategy, forming the typical Ag@Ag 3 PO 4 @ZnO ternary heterostructures. The photodegradation of rhodamine B under ultraviolet–visible light irradiation indicates that the Ag@Ag 3 PO 4 @ZnO ternary heterostructures exhibit much higher activities than pure Ag 3 PO 4 and binary heterostructures of Ag@Ag 3 PO 4 . The higher photocatalytic activity of the Ag@Ag 3 PO 4 @ZnO composites may be attributed to the effective photogenerated charge separation at heterointerfaces of Ag/Ag 3 PO 4 and Ag 3 PO 4 /ZnO, and the rapid electron transport along one-dimensional Ag and ZnO nanorods.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 42
·19876-19882
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IF 3.591
Ling Zhao,Hanping Fu,Lishan Jian,Yating Zeng,Liran Liu,Qingshuang Liang,Xiufeng Xiao
In this work, we report a novel phosphorus element heterostructure with a snowflake-like morphology consisting of 1D rod-like black phosphorus (BP) and 2D flake-like red phosphorus (RP). The content of black phosphorus in the heterostructure can be adjusted and the light absorption range and photocatalytic performance of the heterostructure increase with the proportion of black phosphorus. In this 1D/2D phosphorus element heterostructure, the photogenerated electrons in the conduction band of BP can be used for water decomposition to produce hydrogen, while the photogenerated holes in the valence band of RP can be used to produce oxygen, without using any sacrificial agents. The ratio of hydrogen and oxygen evolution rates is 2 : 1, and the rates are 2.0 and 1.1 μmol g−1 h−1, respectively. Therefore, we believe that this work demonstrates the potential of metal-free elemental photocatalysts with high efficiency, especially in overall pure-water splitting.
研究领域:
材料科学
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化学
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DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2021
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IF 3.247
Min Xiaobo,Li Xinyu,Zhao Jie,Hu Xiaoxian,Yang Weichun
Aiming at exploring an effective photocatalytic adsorbent for organic dye removal, a series of heterostructured TiO2@HKUST-1 photocatalysts, by incorporating HKUST-1 with different TiO2 nanoparticles loading, were prepared by single-step hydrothermal method. The morphology and surface characteristics of the as-prepared TiO2@HKUST-1were analyzed using SEM, HRTEM, XRD, FTIR, UV–vis DRS, and Photoluminescence techniques. The adsorption-photocatalytic degradation of the model dye methylene blue (MB) on the catalysts was investigated. It was indicated that the introduction of a certain amount of TiO2 on the surface of HKUST-1 could improve the transfer and separation of the photogenerated charge carriers, resulting in the enhanced photocatalytic activity. The optimal 0.02TiO2@HKUST-1 exhibited the highest MB removal rate with about 4.4 and 19.3 times as high MB removal efficiency as that of HKUST-1 and TiO2, respectively. Heterostructured TiO2@HKUST-1 materials for the removal of MB involved the integrated adsorption and visible light photocatalysis. Meanwhile, the composite exhibited good reusability in the process of cyclic experiments. Therefore, this work provides a potential MOF-based photocatalytic adsorbent for organic dye removal.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
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IF 7.139
Ying Wang,Jiaru Peng,Yangfan Xu,Ruiyang Zhao,Jishu Han,Lei Wang
Photocatalytic water splitting to produce hydrogen has attracted extensive attention and exhibited broad development prospects. In this work, CuInS 2 microflowers were fabricated through the solvothermal method , and decorated with CdSe quantum dots on the surface. As-prepared CdSe/CuInS 2 microflowers exhibited high photocatalytic hydrogen production activity (10610.37 μmol g −1 h −1 ) and high AQE of 48.97% at 420 nm. The enhanced photocatalytic hydrogen production activity owing to the construction of p-n heterostructure improved light absorption ability, increased electrons transfer efficiency and reduced recombination of photo-induced electrons and holes. Moreover, high stability and cyclic utilization of CdSe/CuInS 2 microflowers were beneficial to photocatalytic hydrogen production application.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2019
·Vol. 14
·期 7
·1013-1020
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IF 3.698
Shuo Geng,Weiwei Yang,Yongsheng Yu
Graphical Non-precious potential : Developing noble-metal-free, earth-abundant, highly active, and stable electrocatalysts with high efficiency for both hydrogen and oxygen evolution reactions in the same electrolyte is of great importance for the development of overall water-splitting devices. Heterostructured NiC/MoC/NiMoO 4 electrocatalysts have been synthesized through a facile method and the influence of anions with same morphology on water splitting has also been studied. Developing noble-metal-free, earth-abundant, highly active, and stable electrocatalysts with high efficiency for both hydrogen and oxygen evolution reactions is of great importance for the development of overall water-splitting devices, but still remains a challenging issue. Herein, a 3D heterostructured NiC/MoC/NiMoO 4 electrocatalyst was prepared through a facile synthetic procedure. The electrocatalyst shows a superior catalytic activity and stability toward the hydrogen and oxygen evolution reactions. The optimized NiC/MoC/NiMoO 4 catalyst presents low overpotentials of 68 and 280 mV to reach a current density of 10 mA cm −2 in 1.0 m KOH for the hydrogen and oxygen evolution reactions, respectively. Assembled as an electrolyzer for overall water splitting, such a heterostructure shows quite a low cell voltage of 1.52 V at 10 mA cm −2 and remarkable stability for more than 20 h. This work provides a facile but efficient approach for the design and preparation of highly efficient bifunctional and self-supported heterostructured electrocatalysts that can serve as promising candidates in electrochemical energy storage and conversion.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2020
·Vol. 14
·期 4
·1900679
·
IF 2.291
Xi Chen,Fanggong Cai,Chuanrong Liu,Rong Dong,Lanxin Qiu,Lili Jiang,Guocai Yuan,Qinyong Zhang
Decoupling the electric conductivity, Seebeck coefficient, and thermal conductivity is a core issue to improve the properties of thermoelectric materials by tuning the electron and phonon transport properties. Herein, Bi 2 Te 2.7 Se 0.3 /Bi 2 S 3 heterostructure is successfully synthesized by a simple anion exchange method with Bi 2 Te 2.7 Se 0.3 as the starting material. The Bi 2 Te 2.7 Se 0.3 /Bi 2 S 3 heterointerfaces can achieve an effective phonon scattering and significant decrease in thermal conductivity, while maintaining a high power factor, resulting in an enhanced figure of merit ( ZT ). By controlling the concentration of Bi 2 Te 2.7 Se 0.3 /Bi 2 S 3 heterointerfaces, the carrier-transporting and phonon-scattering behaviors can be simultaneously optimized. A maximum ZT of 0.7 is obtained at 473 K, which is 23% higher than that of pure Bi 2 Te 2.7 Se 0.3 . In addition, the average ZT at 300–548 K increases from 0.49 to 0.61, which is 25% higher than that of pure Bi 2 Te 2.7 Se 0.3 .
研究领域:
材料科学
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物理学
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Pinghua Chen,Yirou Wu,Xuan Guo,Mengxue Wang,Cong Yu,Hualin Jiang,Weiqiang Zhou,Guanghui Wu,Jianan Yan
The rational design of nonnoble-metal-based catalysts with high electroactivity and long-term stability, featuring controllable active sites, remains a significant challenge for achieving effective water electrolysis. Herein, a heterogeneous catalyst with a FeCo-S and Ni2P heterostructure (denoted FeCo-S/Ni2P/NF) grown on nickel foam (NF) was synthesized by a solvothermal method and low-temperature phosphorization. The FeCo-S/Ni2P/NF catalyst shows excellent electrocatalytic performance and stability in alkaline solution. The FeCo-S/Ni2P/NF catalyst demonstrates low overpotentials (η) for both the hydrogen evolution reaction (HER) (49 mV@10 mA cm–2) and the oxygen evolution reaction (OER) (279 mV@100 mA cm–2). Assembling the FeCo-S/Ni2P/NF catalyst as both cathode and anode in an electrolytic cell for overall water splitting (OWS) needs an ultralow cell voltage of 1.57 V to attain a current density (CD) of 300 mA cm–2. Furthermore, it demonstrates excellent durability, significantly outperforming the commercial Pt/C∥IrO2 system. The results of experiments indicate that the heterostructure and synergistic effect of FeCo-S and Ni2P can significantly enhance conductivity, facilitate mass/ion transport and gas evolution, and expose more active sites, thereby improving the catalytic activity of the electrocatalyst for the OWS. This study provides a rational approach for the development of commercially promising dual-functional electrocatalysts.
研究领域:
材料科学
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电化学
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可再生能源
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DOI
PubMed
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 24
·6018
·
IF 4.2
Qianqian Dong,Qijun Zhong,Jie Zhou,Yuhao Li,Yujing Wang,Jiayang Cai,Shuangwei Yu,Xiong He,Shaohui Zhang
The oxygen evolution reaction (OER), which involves a four-electron transfer and slow kinetics, requires an efficient catalyst to overcome the high energy barrier for high-performance water electrolysis. In this paper, a novel Ni3S2@V-NiFe(III) LDH/NF catalyst was prepared via a facile two-step hydrothermal method. The constructed heterostructure of Ni3S2@V-NiFe(III) LDH increases the specific surface area and regulates the electronic structure. Furthermore, the introduction of the V element forms an electron transport chain of Ni-O-Fe-O-V-O-Ni, which optimizes the binding energy between metal active sites and oxygen evolution reaction intermediates, accelerates electron transfer, and improves self-reconstruction. With this dual regulation strategy, Ni3S2@V-NiFe(III) LDH/NF exhibits exceptional OER performance with an overpotential of 280 mV at 100 mA/cm2and a Tafel slope of 45.4 mV/dec. This work develops a dual regulation strategy combining heterostructure formation and the doping effect, which are beneficial in the design of efficient OER catalysts.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Luping Feng,Jianghong Wang,Lixiang Zhang,Jiadong Li,Yifan Zhang,Minghong Xu,Peisong Tang,Hua Wang
Tubular Co 9 S 8 /CdS heterostructures have been successfully synthesized by in-situ growing CdS onto Co 9 S 8 nanotubes through a simultaneous immobilization and in-situ reduction strategy. It turned out that the so-obtained heterostructure with Co 9 S 8 /CdS molar ratio of 1/10 can display a broad light absorption edge and especially much enhanced capacity for photocatalytic reduction of Cr(VI) under visible light . The characterization analysis and experimental results suggested that an interfacial electrostatic field between Co 9 S 8 and CdS elements in the heterostructure could be constructed due to their different Fermi levels , allowing for more quantities of highly reductive electrons to participate in the photocatalytic reaction. Therefore, the so-obtained Co 9 S 8 /CdS (1/10) heterostructures could achieve the photocatalytic reduction efficiency of 100% within 20 min, which was more than two and four times larger than that of pristine CdS and Co 9 S 8 , respectively. Moreover, the possible photocatalytic reaction mechanism for reducing Cr(VI) was investigated and found to follow the direct Z-scheme charge transfer pathway. This novel fabrication route for composite photocatalysts with tubular heterostructures could lead to the widespread implementations for the elimination of various harmful pollutants in the process of environmental governance.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
IONICS
·
2024
·
IF 2.4
Dong Yangtao,Murugesan Balaji,Lin Weidi,Wang Chao,Dai Junjie,Li Wenwen,Ma Quangui,Yang Xiaogang,Cai Yurong
In this study, a rod-like heterogeneous Bi 2 S 3 /Sb 2 S 3 was systematically engineered through a simple one-step hydrothermal method and subsequently used as an anode active material for sodium-ion batteries (SIBs). The Bi 2 S 3 /Sb 2 S 3 heterostructure electrode exhibits a high initial discharge capacity of 972.2 mAh g −1 and maintains a reversible capacity of 369.4 mAh g −1 after 500 cycles at a current density of 1 A g −1 . The outstanding electrochemical performance of the Bi 2 S 3 /Sb 2 S 3 electrode can be attributed to the synergistic contributions of the high capacity of Sb 2 S 3 and the excellent stability of Bi 2 S 3 . Simultaneously, the abundant heterogeneous phase boundaries formed by Bi 2 S 3 and Sb 2 S 3 provide stable reaction interfaces, better structural integrity, and enhanced Na + reaction kinetics. This work presents an opportunity to develop heterogeneous Bi 2 S 3 /Sb 2 S 3 anode materials with excellent properties, holding promise for potential applications in SIBs.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Xianyu Chu,Yanan Wang,Li Jing,Wei Jiang,Yuanyuan Wu,Ming Lu,Bo Liu,Chunbo Liu,Yantao Sun,Guangbo Che
Constructing heterostructures to regulate the electronic structure is an effective strategy for enhancing the oxygen evolution reaction (OER) electrocatalytic activity. Herein, we prepared heterostructured Co 4 S 3 /CoP 3 (CoPS/NFF) electrocatalysts through a one-step phosphorization and sulfuration process. The synthesized electrode drives an overpotential of 190, 272, and 331 mV at 20, 50, and 100 mA cm −2 for OER in 1 M KOH alkaline media, respectively. These values outperformed those of monophase Co 4 S 3 and CoP 3 as well as the majority of transition metal-based catalysts previously reported. Furthermore, the Density Functional Theory (DFT) calculation results show that charge redistribution occurs at CoPS/NFF heterogeneous interfaces, which facilitates charge transfer and improves catalytic activity. The CoPS/NFF with heterostructure optimizes the adsorption strength of oxygen-containing intermediates (*O, *OH, and *OOH) by appropriately adjusting the d-band center energy level, thereby reducing the energy barrier of OER. This work provides a new perspective on rational design strategies for efficient transition metal-based electrocatalysts by inducing d-band center regulation through the construction of heterostructures.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Shuai Liu,Fumin Wang,Jiawei Wang,Zheng Wang,Xinyuan He,Tongxue Zhang,Zhiwei Zhang,Qian Liu,Xijun Liu,Xubin Zhang
Efficient and cost-effective catalysts are essential to drive the oxygen evolution reaction (OER) in sustainable hydrogen production through water splitting. In this study, we introduce an innovative strategy aimed at constructing heterogeneous structure that form abundant Fe 2 O 3 /NiSe 2 interfaces on the FeOOH surface. The resulting catalyst exhibits extraordinary performance with an excellently low overpotential of 169 mV at 10 mA cm −2 . Notably, this catalyst also demonstrates impressive long-term stability in alkaline seawater . Compared to traditional heterogeneous catalysts with core-shell structures, Fe 2 O 3 /NiSe 2 possesses a closely heterogeneous interface, which plays a role in modulating the interface electron. Supported by complementary spectroscopy and theoretical calculations, it has been further demonstrated that the distinctive Fe-O-Ni-Se structure can effectively modulate the electronic state of Ni, thereby enhancing the adsorption of oxygen-containing intermediates and facilitating oxygen desorption. Overall, this research presents a promising avenue for enhancing the electrocatalytic performance by amplifying active sites at interfaces.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
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