Constructing hydrogen bond based melam/WO3 heterojunction with enhanced visible-light photocatalytic activity
Constructing hydrogen bond based melam/WO3 heterojunction with enhanced visible-light photocatalytic activity
复制标题
构建具有增强可见光催化活性的基于氢键的蜜白胺/WO3异质结
DOI：
10.1016/j.apcatb.2016.12.069
复制
发表时间：
2017-05-15
影响因子：
22.1
通讯作者：
Ohno, Teruhisa
中科院分区：
文献类型：
--
作者：
Jin, Zhengyuan;Zhang, Qitao;Ohno, Teruhisa
基于氢键的可见光响应异质结光催化剂Melam/WO3 (MW) 首次通过简便的行星研磨处理制备而成。傅里叶变换红外光谱（FTIR）和热重（TG）分析揭示了蜜白胺和WO3之间氢键（NH中心点中心点O点）的形成。与WO3相比，MW不仅可以完全分解乙醛，而且在可见光照射下光降解2-丙醇和光生成H2O2的光催化活性分别高出10倍和12倍。 X射线光电子能谱表明，异质结中N和O（NH中心点中心点O）之间的电势差为电荷从WO3转移到蜜白胺提供了驱动力。此外，氢键为异质结提供了超快电子路径。这项研究表明，基于氢键的异质结可能是开发具有高效可见光催化活性的新型光催化剂的有前途的方法。 (C) 2017 Elsevier B.V. 保留所有权利。
Hydrogen bond based visible-light-response heterojunction photocatalyst Melam/WO3 (MW) has been fabricated for the first time by facile planetary milling treatment. Fourier transform infrared spectroscopy (FTIR) and Thermogravimetric (TG) analysis reveal the formation of hydrogen bonds (NH center dot center dot center dot O) between melam and WO3. As compared to WO3, the MW not only complete decomposes acetaldehyde, but also shows 10 times and 12 times higher photocatalytic activity for photo-degradation of 2-propanol and photo-generation of H2O2, respectively, under the visible-light irradiation. X-ray photoelectron spectroscopy suggests that the potential difference between N and O (NH center dot center dot center dot O) in the heterojunction provides the driving force for the charge transfer from WO3 to melam. Furthermore, hydrogen bonds offer an ultrafast electron pathway for heterojunction. This study demonstrates that hydrogen bond based heterojunction could be a promising approach for developing a new photocatalyst with efficient visible-light photocatalytic activity. (C) 2017 Elsevier B.V. All rights reserved.