Facile synthesis of broom stick like FeOCl/g-C3N5 nanocomposite as novel Z-scheme photocatalysts for rapid degradation of pollutants
Facile synthesis of broom stick like FeOCl/g-C3N5 nanocomposite as novel Z-scheme photocatalysts for rapid degradation of pollutants
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DOI：
10.1016/j.chemosphere.2022.135716
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发表时间：
2022-08-03
期刊：
影响因子：
8.8
通讯作者：
Rajendran, Saravanan
中科院分区：
文献类型：
--
作者：
Vadivel, Sethumathavan;Fujii, Manabu;Rajendran, Saravanan
采用一种简单、经济的方法制备了一种新型层状结构FeOCl/g-C3N5纳米复合材料作为Z-scheme光催化剂。该制备方法在常温条件下进行，无任何危险化学品。采用XRD、FESEM、TEM、FT-IR、UV-Vis、DRS、PL等表征技术对所制备的FeOCl/g-C3N5纳米复合材料进行了表征，以确定其为FeOCl/g-C3N5纳米复合材料。以四环素（T-C）为目标污染物，评价其对可见光的降解性能。在g-C3N5掺杂FeOCl二元纳米复合材料的最佳负载中，g-C3N5/FeOCl对T-C抗生素污染物的降解性能最好。结果证实，在光降解机制下，95%的T-C在40 min内被降解。g-C3N5的掺入降低了T-C的电子-空穴复合，扩大了光吸收，缩短了降解时间，从而提高了T-C的降解性能。此外，羟基和超氧自由基在光降解过程中起主要作用，并对其可能的机制进行了阐述和提出。本研究暗示了一种新的、可持续的、高效的Z-scheme系统，它可能提供一种方便的环境修复方法。
A simple and cost-effective route has been utilized for the preparation of a novel lamellar structured FeOCl/g-C3N5 nanocomposite as Z-scheme photocatalyst. The preparation method was performed under the ambient temperature conditions without any hazardous chemicals. Various characterization techniques, namely XRD, FESEM, TEM, FT-IR, UV-Vis, DRS, and PL were carried out to analyse the nanocomposite for confirmation of FeOCl/g-C3N5 nanocomposite. To evaluate its and visible light degradation performances tetracycline (T-C) was used as target pollutant. Among the optimum loading for the g-C3N5 incorporated FeOCl binary nanocomposites, the g-C3N5/FeOCl exhibited a superlative degradation performance toward the T-C antibiotic pollutant. The results confirmed that 95% of T-C was degraded within 40 min under photodegradation mechanism. The improved photodegradation performance in degradation of T-C was mainly due to the reduction in electron-hole recombination, broadening in the light absorption by g-C3N5 incorporation, which leads to shortening the degradation time. Furthermore, the hydroxyl and superoxide radicals played a major role in the photodegradation process and the possible mechanism was elucidated and proposed. The present work implies a novel, sustainable, and efficient Z-scheme system that may deliver a convenient method for environment remediation.