Visible/near-IR-light-driven TNFePc/BiOCl organic-inorganic heterostructures with enhanced photocatalytic activity
Visible/near-IR-light-driven TNFePc/BiOCl organic-inorganic heterostructures with enhanced photocatalytic activity
复制标题
可见光/近红外光驱动的 TNFePc/BiOCl 有机-无机异质结构，具有增强的光催化活性
DOI：
10.1039/c6dt01091a
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发表时间：
2016
影响因子：
4
通讯作者：
Zhang Xitian
中科院分区：
文献类型：
--
作者：
Li Lu;Zhang Mingyi;Zhao Zhenyu;Sun Baodong;Zhang Xitian
虽然半导体光催化的研究已经有40多年的历史，但其光谱响应仍然集中在紫外-可见区域，很少扩展到600 nm以上。本文采用两步溶剂热法合成了可见光/近红外驱动的2,9,16,23-四硝基酞菁铁(FeTNPc)/氧化氯化铋（BiOCl）有机-无机异质结构。通过x射线衍射、傅里叶变换红外光谱、扫描电子和透射显微镜、能量色散x射线光谱仪、紫外-可见漫反射光谱、氮吸附-解吸和电化学测量对所得产物进行了表征。在可见光/近红外光照射下，甲基橙和双酚A溶液的光催化活性显著提高。通过捕获实验检测主要氧化物质，结果表明，空穴和˙O2−自由基分别对光降解起主要作用和次要作用。此外，FeTNPc/BiOCl复合光催化剂经过三次循环测试后仍保持了光催化活性。
Although semiconductor photocatalysis has been reported for more than 40 years, the spectral response is still focused on the region of UV-Visible and it is seldom extended to more than 600 nm. In this work, visible/near-IR-light-driven 2,9,16,23-tetranitrophthalocyanine iron (FeTNPc)/bismuth oxychloride (BiOCl) organic–inorganic heterostructures have been synthesized by a two-step solvothermal method. The obtained products were characterized by X-ray diffraction, Fourier transform infrared spectra, scanning electron and transmission microscopy, energy dispersive X-ray spectrometer, UV-vis diffuse reflectance spectroscopy, nitrogen adsorption–desorption, and electrochemical measurements. The photocatalytic activity for the decomposition of methyl orange and bisphenol A solution can be significantly improved under visible/near-IR-light irradiation. Through detecting the main oxidative species by trapping experiments, the results show holes and ˙O2− radicals are majorly and minorly responsible for photodegradation respectively. What's more, the FeTNPc/BiOCl composite photocatalyst still retained the photocatalytic activity after three cycle measurements.