Facile synthesis of a robust visible-light-driven AgCl/WO3 composite microrod photocatalyst

Facile synthesis of a robust visible-light-driven AgCl/WO3 composite microrod photocatalyst
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轻松合成可见光驱动的 AgCl/WO3 复合微棒光催化剂

DOI:
10.1016/j.jallcom.2019.151844
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发表时间:
2019-11
影响因子:
6.2
通讯作者:
Li Shaoyu
Li Shaoyu
中科院分区:
材料科学2区
文献类型:
--
作者:
Yu Changlin;Chen Fanyun;Liu Zhen;Yang Kai;Ji Hongbing;Li Dehao;Xie Wenyu;Li Shaoyu

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通过水热煅烧工艺合成了一系列具有不同Ag/W摩尔比(0.25、0.50、0.75、1.00、1.25)的坚固AgCl/WO3复合微棒(0.1–0.2μm)。通过 XRD、SEM、TEM、FT-IR、UV-vis DRS、PL、BET、Raman、瞬态 TPRT 和 EIS 对所得样品进行了表征。有机染料光催化降解实验表明,AgCl/WO3微棒比裸AgCl和WO3具有更高的光催化活性和稳定性。在最佳的 AgCl/WO3 摩尔比 (0.75∼1) 下,染料分解效率比 AgCl/WO3 微棒提高了 2∼5 倍。紧密的WO3/AgCl异质结(界面)的形成极大地提高了光生载流子的分离效率。这项研究表明 AgCl/WO3 微棒可能是一种有前途的环境修复光催化剂。
A series of robust AgCl/WO3composite microrods (0.1–0.2μm) with different Ag/W molar ratios (0.25, 0.50, 0.75, 1.00, 1.25) were synthesizedviahydrothermal-calcination process. The obtained samples were characterized by XRD, SEM, TEM, FT-IR, UV-vis DRS, PL, BET, Raman, transient TPRT and EIS. The photocatalytic test for organic dyes degradation showed that AgCl/WO3microrods possess much higher photocatalytic activities and stability than bare AgCl and WO3. With optimal AgCl/WO3molar ratio (0.75∼1), 2∼5 times increase in dye decomposition efficiency was obtained over AgCl/WO3microrods. The formation of intimate WO3/AgCl heterojuction (interface) largely enhanced the separation efficiency of photogenerated carriers. This investigation suggested that AgCl/WO3microrods could a promising photocatalyst for environmental remediation.
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