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        2D/2D WO3/Ag:ZnIn2S4 Z型異質結復合物的構筑及可見光催化性能
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        1.大連大學 環境與化學工程學院;2.沈陽化工大學 無機分子基遼寧省重點實驗

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        國家自然科學基金(51402198);遼寧省“興遼英才計劃”項目(XLYC2007166)


        Construction of 2D/2D WO3/Ag:ZnIn2S4 Z-scheme heterojunction composites for visible light catalysis
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        1.College of Environmental and Chemical Engineering,Dalian University;2.Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province,Shenyang University of Chemical Technology,Shenyang

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          摘要:

          構筑Z型異質結復合物是光催化領域解決電子-空穴對復合較快的常用方法,其獨特的雙光子體系能高效的提升光催化速率而備受關注。本文通過水熱法原位構筑二維/二維(2D/2D)WO3/Ag:ZnIn2S4 Z型異質結復合物,并且利用透射電子顯微鏡(TEM)、X射線衍射(XRD)、X射線光電子能譜(XPS)、紫外-可見漫反射光譜(UV-Vis DRS)、光電化學(PEC)和熒光光譜(PL)對其微觀形貌、物相結構、元素化學態和光電性能等進行表征分析,以及采用可見光(加λ>420 nm的濾光片)照射來評價2D/2D WO3/Ag:ZnIn2S4 Z型異質結復合物光解水制氫氣和光降解甲基橙(MO)的催化性能。結果表明,在2D/2D WO3/Ag:ZnIn2S4 Z型異質結復合物中,隨著Ag:ZnIn2S4的含量增加,光催化性能也顯著增強。當Ag:ZnIn2S4的質量分數為35.0%時,復合物表現出最佳的制氫速率(158.93 μmol.g-1.h-1)與降解速率(0.18 min-1),這為基于WO3納米片設計和構筑2D/2D Z型異質結復合物用于可見光催化制氫和污染物降解提供了新的見解。

          Abstract:

          The Z-Scheme heterojunction is extremely attractive in the field of photocatalysis to solve the electron-hole separation transport path because of its unique bi-photon system that can efficiently improve the photocatalytic rate. In this study, the hydrothermal method was used to in situ synthesize two-dimensional/two-dimensional (2D/2D) WO3/Ag:ZnIn2S4 Z-Scheme heterojunction composites. Meanwhile, the microstructure, phase structure, chemical environment and optoelectronic properties of 2D/2D WO3/Ag:ZnIn2S4 Z-Scheme heterojunction composites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflection spectroscopy (UV-Vis DRS), photoelectrochemical (PEC), and photoluminescence (PL) spectra, respectively. Furthermore, under visible light irradiation (using a filter with λ>420 nm), the performance of 2D/2D WO3/Ag:ZnIn2S4 Z-Scheme heterojunction composites for hydrogen production and photodegradation of methyl orange (MO) was assessed. The results show that the photocatalytic performance is also significantly enhanced with the addition of Ag:ZnIn2S4 content, in the 2D/2D WO3/Ag:ZnIn2S4 Z-Scheme heterojunction composites. When the mass fraction of Ag:ZnIn2S4 was 35.0%, it showed the best hydrogen production rate (158.93 μmol.g-1.h-1) and degradation rate (0.18 min-1). This work provides new insights into design and construction of Z-scheme heterojunction based on WO3 nanosheets for visible light catalytic hydrogen production and pollutant degradation.

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        顧登,明濤,張含煙,高雨,丁茯,徐振和,孫亞光.2D/2D WO3/Ag:ZnIn2S4 Z型異質結復合物的構筑及可見光催化性能[J].精細化工,2023,40(8):

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        • 收稿日期:2022-10-08
        • 最后修改日期:2022-12-19
        • 錄用日期:2022-12-26
        • 在線發布日期: 2023-06-12
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