<br>BiVO4@N-生物炭纳米复合材料的新型组装用于三氯生的高效解毒,Chemosphere

当前位置： X-MOL 学术 › Chemosphere › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

BiVO4@N-生物炭纳米复合材料的新型组装用于三氯生的高效解毒
Chemosphere ( IF 8.1 ) Pub Date : 2022-03-10 , DOI: 10.1016/j.chemosphere.2022.134292
Xueyu Wei ₁ , Xiaoping Xu ₁ , Xiaofan Yang ₂ , Zhigang Liu ₃ , Saraschandra Naraginti ₂ , Lin Sen ₄ , Song Weidi ₁ , Li Buwei ₁

Affiliation

抗菌剂和抗真菌剂的广泛应用要求在不断增长的多功能材料中完全消除水中的这些有机污染物。BiVO4 （钒酸铋）在可见光下是一种优异的催化剂，但光电子-空穴对复合速率高，吸附能力差，限制了其效率。在 BiVO4 中添加具有大比表面积和高导电性的 N 掺杂生物炭（N-Biochar）有望克服该问题并促进催化性能。因此，本研究开发了一种简单的水热法来制备 BiVO4@N-Biochar 催化剂，用于高效解毒三氯生（TCS）。形态分析结果表明，BiVO4 颗粒均匀分布在 N-Biochar 基质中的碳表面。在可见光照射后 60 分钟内，BiVO4@N-生物炭（k = 0.02154 min -1）获得了近 94.6% 的 TCS 降解效率，而纯 BiVO4 仅达到 56.7% （k = 0.00637 min -1）。此外，利用 LC-MS/MS 技术测定光降解过程中 TCS 降解产物的产生，并提出了途径。此外，使用大肠杆菌（Escherichia coli）菌落形成单位测定法测定降解产物的生物毒性，其中实现了 72.3 ± 2.6% 的解毒效率，并表明光降解过程中的生物毒性显着降低。

"点击查看英文标题和摘要"

Novel assembly of BiVO4@N-Biochar nanocomposite for efficient detoxification of triclosan

The wide spread of antibacterial and antifungal agents demands in growing multifunctional materials to completely eliminate these organic contaminants in water. BiVO4 (Bismuth vanadate) is a superior catalyst under visible light but suffers with high photoelectron-hole pair recombination rate and poor adsorption capacity which limits its efficiency. Addition of N-doped Biochar (N-Biochar) to BiVO4 with large specific surface area and high conductivity are anticipated to overcome the problem and promote the catalytic performance. Thus, the present study developed a simple hydrothermal method to prepare BiVO4@N-Biochar catalyst for efficient detoxification of Triclosan (TCS). The morphological analysis results suggested that BiVO4 particles were evenly distributed on carbon surface amongst the N-Biochar matrix. Within 60 min of visible light irradiation, nearly 94.6% TCS degradation efficiency was attained by BiVO4@N-Biochar (k = 0.02154 min−1) while only 56.7% was attained with pure BiVO4 (k = 0.00637 min−1). In addition, LC-MS/MS technique was utilized to determine the TCS degradation products generation in the photodegradation process and pathway was proposed. Furthermore, the E. coli (Escherichia coli) colony forming unit assay was used to determine the biotoxicity of the degradation products in which 72.3 ± 2.6% of detoxification efficiency was achieved and suggested a substantial reduction in biotoxicity during the photodegradation.

更新日期：2022-03-10

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南