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Fabrication of Amorphous BiOCl/TiO2‐C3N4 Heterostructure for Efficient Water Oxidation
ChemistrySelect ( IF 1.9 ) Pub Date : 2019-07-29 , DOI: 10.1002/slct.201901703 Muhammad Shakeel 1 , Xiaorong Zhang 1 , Ghulam Yasin 1 , Muhammad Arif 1 , Zaheer Abbas 1 , Umber Zaman 2 , Baoshan Li 1
ChemistrySelect ( IF 1.9 ) Pub Date : 2019-07-29 , DOI: 10.1002/slct.201901703 Muhammad Shakeel 1 , Xiaorong Zhang 1 , Ghulam Yasin 1 , Muhammad Arif 1 , Zaheer Abbas 1 , Umber Zaman 2 , Baoshan Li 1
Affiliation
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The photo‐/electrocatalysis has gained much attention in the recent decades by acquainting variety of catalysts to deal with the energy crises. Keeping in mind the water splitting efficiency of TiO2, we coupled with bismuth oxychlorides (BiOCl) and graphitic carbon nitride (g‐C3N4) by low temperature calcination treatment and built an amorphous BiOCl/TiO2‐g‐C3N4 heterostructure for water oxidation. This material was characterized by the state of art spectroscopic and electrochemical techniques such as X‐rays diffractions, UV‐vis. diffused reflectance spectroscopy, scanning electron microscopy, high‐resolution transmission electron microscopy and photoelectron spectroscopic measurements. The resulting nanocomposite considered as good electrocatalyst with Tafel slope 81 mVdec−1and produces current density JOER=10 mA cm−2 at overpotential of 376 mV while on illuminations condition it further decreases to 366 mV without compromising the current density with Tafel slope 70 mVdec−1 prevailing the influence of light. The efficient activity was attributed to the synergistic coupling and the visible light responses of the nanocomposite. This investigation not only prospered to enhance the catalytic activity of BiOCl/TiO2 by the incorporation of g‐C3N4 nanosheets, also give perceptions to the relationship between amorphous structure and photo‐/electrochemical catalytic activity.
中文翻译：
用于高效水氧化的非晶态BiOCl / TiO2-C3N4异质结构的制备
近几十年来，光/电催化通过熟悉各种应对能源危机的催化剂而备受关注。考虑到TiO 2的水分解效率，我们通过低温煅烧处理将三氯氧化铋（BiOCl）和石墨氮化碳（g‐C 3 N 4）偶联在一起，构建了无定形的BiOCl / TiO 2 ‐g‐C 3 N 4水氧化的异质结构。这种材料的特征在于最先进的光谱和电化学技术，例如X射线衍射，UV可见光。漫反射光谱，扫描电子显微镜，高分辨率透射电子显微镜和光电子光谱测量。所得的纳米复合材料被认为是具有良好的Tafel斜率81 mVdec -1的电催化剂，并在376 mV的超电势下产生电流密度J OER = 10 mA cm -2，而在光照条件下，其进一步降低至366 mV，而不会损害Tafel斜率70 mVdec -1盛行光的影响。有效活性归因于纳米复合材料的协同偶联和可见光响应。这项研究不仅促进了通过掺入g‐C 3 N 4纳米片增强BiOCl / TiO 2的催化活性，还使人们认识到非晶结构与光/电化学催化活性之间的关系。
更新日期：2019-07-29
中文翻译：
用于高效水氧化的非晶态BiOCl / TiO2-C3N4异质结构的制备
近几十年来，光/电催化通过熟悉各种应对能源危机的催化剂而备受关注。考虑到TiO 2的水分解效率，我们通过低温煅烧处理将三氯氧化铋（BiOCl）和石墨氮化碳（g‐C 3 N 4）偶联在一起，构建了无定形的BiOCl / TiO 2 ‐g‐C 3 N 4水氧化的异质结构。这种材料的特征在于最先进的光谱和电化学技术，例如X射线衍射，UV可见光。漫反射光谱，扫描电子显微镜，高分辨率透射电子显微镜和光电子光谱测量。所得的纳米复合材料被认为是具有良好的Tafel斜率81 mVdec -1的电催化剂，并在376 mV的超电势下产生电流密度J OER = 10 mA cm -2，而在光照条件下，其进一步降低至366 mV，而不会损害Tafel斜率70 mVdec -1盛行光的影响。有效活性归因于纳米复合材料的协同偶联和可见光响应。这项研究不仅促进了通过掺入g‐C 3 N 4纳米片增强BiOCl / TiO 2的催化活性，还使人们认识到非晶结构与光/电化学催化活性之间的关系。
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