Ag/HNb3O8纳米片的合成及其光催化性能
Synthesis of Ag/HNb3O8 Nanosheets and Its Photocatalytic Performance
DOI: 10.12677/JAPC.2023.122013, PDF,   
作者: 李欣欣, 李鑫月, 邓 磊, 杨新丽：河南工业大学化学化工学院，河南 郑州
关键词: HNb3O8纳米片；Ag；光催化；氢气；HNb3O8 Nanosheets； Ag； Photocatalysis； Hydrogen
摘要: 以商业NbCl5为铌源，通过水热法合成HNb3O8纳米片，然后分别采用光沉积和浸渍的方法制备了Ag/HNb3O8-pp (光沉积)和Ag/HNb3O8 (浸渍方法)光催化剂，对合成的两种催化剂进行了详细的表征，并研究其光催化析氢活性。XRD、FT-IR、SEM和TEM的表征结果说明我们成功合成了负载Ag的HNb3O8纳米片催化剂。UV-vis-NIR分析了各催化剂的能带结构。结果表明：由于Ag的引入，Ag/HNb3O8催化剂表现出了较强的LSPR效应，对可见光和近红外光的吸收得到了增强。光催化测试的结果与表征结果一致，浸渍方法制备的Ag/HNb3O8表现出了较强的析氢速率(889.7 μmol∙g−1∙h−1)，是纯HNb3O8的31.3倍(28.4 μmol∙g−1∙h−1)。
Abstract: HNb3O8 nanosheets composites were synthesized by a one-step hydrothermal method using commercial NbCl5 as niobium source. Ag/HNb3O8-PP and Ag/HNb3O8 photocatalysts were prepared by means of photo-deposition and dipping with a certain proportion of Ag on HNb3O8 nanosheets. Besides, the results of XRD, FT-IR, SEM and TEM show that the Ag loaded HNb3O8 nanosheets were successfully synthesized. The band structures of photocatalyst were determined by UV-vis-NIR. Because of loading Ag atom, the more absorption might be associated with LSPR. The photocatalytic tests are consistent with the characterization. The optimal Ag/HNb3O8 displays the highest hydrogen evolution rate (889.7 μmol∙g−1∙h−1), which is 31.3 times of that for pure HNb3O8 (28.4 μmol∙g−1∙h−1).
文章引用：李欣欣, 李鑫月, 邓磊, 杨新丽. Ag/HNb3O8纳米片的合成及其光催化性能[J]. 物理化学进展, 2023, 12(2): 112-121. https://doi.org/10.12677/JAPC.2023.122013

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