Advanced Materials Interfaces
·
2021
·Vol. 8
·期 9
·2100052
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IF 6.147
Lijuan Lai,Fangshu Xing,Chuchu Cheng,Caijin Huang
Hierarchical structure design and use of cocatalyst are effective strategies to improve the photocatalytic performance of semiconductor catalysts. Herein, 0D NiSe 2 nanoparticles decorated 2D ZnIn 2 S 4 ultrathin nanosheet-assembled microflowers using a facile solvothermal approach are synthesized. The as-obtained NiSe 2 /ZnIn 2 S 4 nanocomposites exhibit enhanced visible-light photocatalytic H 2 -evolution activity of 1487 µ mol (g h) –1 , three times higher than that of pure ZnIn 2 S 4 . The hierarchical structure of ZnIn 2 S 4 microflowers exposes more surface-active sites and enhances light harvesting. Meanwhile, the formation of heterojunctions between ZnIn 2 S 4 nanosheets and NiSe 2 nanoparticles creates a space-charge separation region that facilitates the transfer and separation of photoinduced electrons and holes, resulting in improved photocatalytic H 2 production. This work provides a promising strategy for designing and constructing 0D/2D heterojunctions for efficient solar-driven energy conversion.
研究领域:
材料科学
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纳米技术
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光催化
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能源转换
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产品关联
DOI
高影响因子
Catalysts
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2022
·Vol. 12
·期 4
·400
·
IF 4.501
Sujuan Hu,Li Jin,Wangyu Si,Baoling Wang,Mingshan Zhu
Vacancies engineering based on semiconductors is an effective method to enhance photoelectrochemical activity. Herein, we used a facile one-step solvothermal method to prepare sulfur vacancies modified ultrathin two-dimensional (2D) ZnIn2S4nanosheets. The photon-to-current efficiency of sulfur vacancies modified ultrathin 2D ZnIn2S4nanosheets is 1.82-fold than ZnIn2S4nanosheets without sulfur vacancies and 2.04-fold than multilayer ZnIn2S4. The better performances can be attributed to the introduced sulfur vacancies in ZnIn2S4, which influence the electronic structure of ZnIn2S4to absorb more visible light and act as the electrons trapping sites to suppress the recombination of photo-generated carriers. These results provide a new route to designing efficient photocatalyst by introducing sulfur vacancies.Keywords:ZnIn2S4nanosheets;sulfur vacancies;vacancies engineering;photoelectrocatalysts;photoelectrochemical performance
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 5
·118305
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IF 7.2
Qian Xie,Zhengxin Cai,Yuxuan Wang,Jiajia Cai,Jianmin Wang,Shineng Sun
Photoelectrochemical cathodic protection (PCP) driven by solar energy represents a promising alternative to conventional corrosion protection methods. However, severe photocarrier recombination within the photoanode remains a major obstacle limiting PCP efficiency. Herein, a Z-scheme heterojunction composed of 3D TiO 2 nanotube arrays (T) and 2D ZnIn 2 S 4 (ZIS) nanoflowers was rationally constructed for the controllable growth and effective application in the PCP of Q235 steel. Benefiting from the Z-scheme charge transfer pathway, intimated interfacial contact, and broad UV–visible light absorption capability, the T/ZIS heterojunction exhibited significantly enhanced charge separation and transport efficiency. In the optimized configuration, the open-circuit potential under illumination (OCP L ) of T/ZIS-5 coupled with Q235 reached −1.07 V vs. SCE, accompanied by a photocurrent density of 240 μA/cm 2 , over 6-fold higher than that of bare T and superior to other reported photoanodes under similar conditions. This work highlights the important role of electrode design and interface engineering in optimizing PCP performance and provides valuable insights for the development of high-performance heterojunction-based photoelectrodes for solar-driven corrosion protection in marine environments.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2023
·Vol. 106
·期 8
·4785-4793
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IF 3.9
Dafeng Zhang,Ruiqi Zhang,Junchang Liu,Xipeng Pu,Peiqing Cai
Photocatalytic H 2 evolution technique has been proved to be one of the promising approaches to overcome the present energy and environmental issues caused by the combustion of fossil fuel. Constructing heterojunction can realize the efficient separation and migration of charges and thus achieve enhanced H 2 evolution performance. Herein, we designed and prepared a ZnIn 2 S 4 /BiFeO 3 heterojunction photocatalyst with a 3D/2D structure via an ultrasonic self-assembly process. The typical 3D/2D structure with intimate interface was obtained, which not only provided more active sites but also boosted the migration of photogenerated charges. The optimal mass ratio of BiFeO 3 in ZnIn 2 S 4 /BiFeO 3 was determined to be 10%, and a 10.5-fold increase in H 2 evolution rate in comparison with of pure ZnIn 2 S 4 was achieved. Furthermore, the ZnIn 2 S 4 /BiFeO 3 composite exhibited excellent recyclability and structural stability based on cycling experiment. A S-scheme heterojunction mechanism was revealed according to the experimental results of photocatalytic H 2 evolution and electrochemical tests.
研究领域:
材料科学
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能源与环境科学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·
IF 3.5
Hanbing Wang,Yunqi Ning,Qi Tang,Xueyang Li,Mengdi Hao,Qun Wei,Tingting Zhao,Daqi Lv,Hongwei Tian
The layered perovskite lanthanum titanate (La2Ti2O7) is a good photocatalytic material owing to its high stability, strong redox ability, and non-toxicity. However, its inherent wide bandgap limits its application in photocatalytic hydrogen evolution. Therefore, combining La2Ti2O7 with two-dimensional (2D) narrow-bandgap semiconductors to form a 2D/2D layered structures is the preferred strategy to improve its photocatalytic performance. In this study, a novel 2D/2D ZnIn2S4/La2Ti2O7 Z-scheme heterojunction was prepared through the solvothermal method. The experimental results show that when the molar ratio of La2Ti2O7 to ZnIn2S4 is 1:4, the hydrogen evolution rate of the composite under ultraviolet-visible light reaches 6.97 mmol·g1·h1, which is 3.5 times higher than that of the pure ZnIn2S4. The results of the morphological characterization of the samples and the photoelectrochemical measurements show that channels for the rapid transfer of carriers are generated by the unique 2D/2D structure of these samples, and the separation and migration efficiency of the photogenerated carriers gets significantly improved due to the formation of the Z-scheme heterojunction. This study provides useful insight into the modulation of wide-bandgap semiconductors and the research on solar energy conversion.
研究领域:
材料科学
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纳米技术
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光催化
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能源转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2023
·Vol. 332
·期 7
·2759-2770
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IF 1.6
Li Xiuxin,Ouyang Jiafeng,Zhang Pengcheng,Wang Degao,Zhang Lei,Yuan Liyong,Liang Tongxiang,Chai Zhifang,Shi Weiqun,Wang Lin
Novel sandwich-like ZnIn 2 S 4 /Ti 3 C 2 composites with strong interfacial coupling were prepared by a facile solvothermal approach for U(VI) photocatalytic reduction immobilization. The integration of Ti 3 C 2 nanosheets into ZnIn 2 S 4 hierarchical structures endowed the composite outstanding photocatalytic performance through improving the utilization of solar energy and boosting the separation of photogenerated electrons and holes, evidenced by a fast reaction rate of 0.0247 min −1 , which was 3.20 times of that for pristine ZnIn 2 S 4 . The corresponding U(VI) removal efficiency of 50 ppm U(VI) solution reached 96.1% under visible light irradiation without sacrificial agents. In addition, the excellent stability and reusability of ZnIn 2 S 4 /Ti 3 C 2 has been demonstrated. Graphical Abstract Sandwich-like 2D/2D ZnIn 2 S 4 /Ti 3 C 2 composite for highly efficient photocatalytic reduction of U(VI)
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 9
·2770-2777
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IF 4.029
Qingyong Tian,Wei Wu,Jun Liu,Zhaohui Wu,Weijing Yao,Jin Ding,Changzhong Jiang
The development of photocatalysts with superior photoactivity and stability for the degradation of organic dyes is very important for environmental remediation. In this study, we have presented a multidimensional (1D and 2D) structured CdS/ZnIn2S4/RGO photocatalyst with superior photocatalytic performance. The CdS/ZnIn2S4 helical dimensional heterostructures (DHS) were prepared via a facile solvothermal synthesis method to facilitate the epitaxial growth of 2D ZnIn2S4 nanosheets on 1D CdS nanowires. Ultrathin 2D ZnIn2S4 nanosheets have grown uniformly and perpendicular to the surface of 1D CdS nanowires. The as-obtained 1D/2D CdS/ZnIn2S4 helical DHS show good photocatalytic properties for malachite green (MG). Subsequently, 2D reduced graphene oxide (RGO) was introduced into the 1D/2D CdS/ZnIn2S4 helical DHS as a co-catalyst. The photoactivity and stability of the CdS/ZnIn2S4/RGO composites are significantly improved after 6 cycles. The enhanced photoactivity can be attributed to the high surface area of RGO, the improved adsorption of organic dyes and the efficient spatial separation of photo-induced charge carriers. The transfer of photo-generated electrons from the interface of CdS and ZnIn2S4 to RGO also restricted the photocorrosion of metal sulfide, suggesting an improved stability of the reused CdS/ZnIn2S4/RGO composited photocatalyst.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Qiang Gao,Junxi Li,Bin Liu,Chenguang Liu
The rationally designed semiconductor photocatalytic materials have attracted significant attention because of their huge advantages in the use of solar light. Herein, a series of direct Z-scheme heterojunction nanocomposites were synthesized via in situ growth of zinc indium sulfide nanosheets on ceria nanosheets (ZnIn 2 S 4 @CeO 2 ) and employed for effective photodegradation and Cr(VI) reduction. Advanced characterizations such as XPS , EPR spectra, and DFT calculations verified that the formation of direct Z-scheme charges transfer mechanism promoted rapid charge separation and retained strong redox capacity. As a result, the optimized ZnIn 2 S 4 @CeO 2 sample showed significantly promoted photocatalytic removal rates for tetracycline (TC) and Cr(VI) at a 3.7 and 4.5 times enhancement by comparison with the pristine ZnIn 2 S 4 , respectively. Additionally, after four consecutive cyclic tests, the as-synthesized nanocomposite exhibited remarkable photocatalytic activity and stability. The present work provides an integrated engineering strategy for Z-scheme photocatalyst systems with high photocatalytic efficiency and extensive applications.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Chao Peng,Yiming Chen,Xingyue Gao,Ping Wei,Yihao Lin,Li Fu,Bingpu Zhou,Mengchen Zhang,Jianbo Jia,Tiangang Luan
In this study, leveraging the tunable surface groups of MXene , the two-dimensional (2D) Nb 2 C T x with OH terminal (NC) was synthesized. 2D ZnIn 2 S 4 (ZIS) nanosheets were prepared with the aid of sodium citrate, enhancing the exposure ratio of active (1 1 0) facet. On this basis, 2D/2D ZnIn 2 S 4 /Nb 2 C T x heterojunctions were fabricated to improve photocatalytic hydrogen evolution reaction (HER) performance. The optimized 6 wt%Nb 2 C T x /ZnIn 2 S 4 -450 (6NC/ZIS-450) photocatalyt exhibits a remarkable HER rate of 3603 μmol g −1 h −1 , which is 10 times superior to that of the original ZnIn 2 S 4 . Its apparent quantum efficiency (AQE) at 380 nm reaches 14.9 %. Meanwhile, even after 5 rounds of HER, the activity of 2D/2D ZnIn 2 S 4 /Nb 2 C T x heterojunction remained at 90 %, far superior to that of pure ZnIn 2 S 4 (34 % and 31 %). Energy band structure analysis and density functional theory (DFT) calculation indicate that Nb 2 C T x adsorbed with OH exhibit a low work function . By serving as a hole cocatalyst, it effectively boosts the photocatalytic HER rate of ZnIn 2 S 4 /Nb 2 C T x heterojunction and inhibits the photocorrosion of ZnIn 2 S 4 . This unique insight, via hole transport highways and increased exposure of active facets, effectively enhances the activity and stability of sulfides photocatalysts .
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
PubMed
高影响因子
CHEMOSPHERE
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2019
·
IF 5.108
Runren Jiang,Donghai Wu,Guanghua Lu,Zhenhua Yan,Jianchao Liu
Broadening the range of light absorption and inhibiting charge carrier's recombination are vital to improving photocatalytic activity. In this study, a novel full spectrum light-driven carbon quantum dots (CQDs) modified 2D-2D ZnIn 2 S 4 /BiOCl van der Waals (VDW) heterostructures were prepared by a facile hydrothermal method. It exhibits remarkable degradation efficiency for removing various antibiotics from water (i.e. tetracycline (TC), ciprofloxacin (CIP) and oxytetracycline (OTC) under visible and near-infrared (NIR) light. The enhancement of photocatalytic performance is due to the 2D-2D VDW heterostructures and CQDs not only accelerate the interfacial charge separation and transfer but also provide massive reactive canters to facilitate degradation reaction. Besides, the optical absorption capacity of CQDs modified 2D-2D ZnIn 2 S 4 /BiOCl VDW heterostructures are obviously enhanced because of the up-conversion photoluminescence (UC-PL) properties of CQDs. Furthermore, the degradation process of TC is assessed by three-dimensional excitation-emission matrix (3D-EEMs) and liquid chromatography-tandem mass (LC-MS/MS) spectrometry analysis. Active species trapping experiments and electron spin resonance (ESR) testify that O 2 − , OH, and holes play a crucial part in the photocatalytic degradation process. This work affords a new promising approach for CQDs modified 2D/2D VDW heterojunction with enhanced photoactivity in organic pollutant degradation for full spectrum light utilization.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
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2024
·
IF 3.3
Yu Xia,Guofang Huang,Yan Fan,Xiaolong Zhao,Lei Wang,Jingwei Huang,Houde She,Qizhao Wang
Semiconductor heterojunctions could accelerate carrier separation and transfer for improving light-to-hydrogen (LTH) conversion efficiency. However, the lack of tight and efficient interfacial charge cross in three-dimensional semiconductor-based heterojunctions limits their practical application and the relevant profound understanding of the interfacial charge delivery. In this work, porphyrin (Cu)-based COF with a highly conjugated structure was deposited onto three-dimensional (3D) ZnIn2S4 by a facile solvothermal method to prepare a 3D/2D ZnIn2S4@CuP–Ph COF heterojunction. The content-optimized ZnIn2S4@CuP–Ph COF composite showed an excellent LTH conversion rate of up to 2667.94 μmol g–1 h–1, about 13.5 times higher than that of pristine ZnIn2S4. The significantly meliorated photocatalytic performance is attributed to the synergistically functioning contributors, that is, the fast interfacial charge transfer and the augmented light capturing capability after integration. Also, the work function results by DFT calculation reveals that the electrons of CuP–Ph COF (Φ = 4.41 eV) transfer from the interface electron delivery channels of the two components to ZIS (Φ = 7.03 eV) until the Fermi level of the two components reaches equilibrium. This moment, the work function of ZnIn2S4@CuP–Ph COF (Φ = 6.50 eV) lies between the two components, and an electron accumulation region is formed on the side of ZIS. Additionally, the free-energy barriers of hydrogen evolution dominated by ZnIn2S4@CuP–Ph COF (0.0955 eV) is much lower than that of ZnIn2S4 (0.1256 eV). This study possesses certain guiding significance for the design of organic–inorganic heterojunction photocatalysts for efficient LTH conversion.
研究领域:
材料科学
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能源科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）