Nanocellulose encapsulated nZVI@UiO-66-NH2 aerogel for high-efficiency p-chloronitrobenzene removal with selective reduction

IF 12.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Journal of Hazardous Materials Pub Date : 2024-11-15 DOI:10.1016/j.jhazmat.2024.136520

Jie Zhou , Xiaolei Hu , Zhengkun Luo , Xiaodong Li , Wei-xian Zhang , Zilong Deng

{"title":"Nanocellulose encapsulated nZVI@UiO-66-NH2 aerogel for high-efficiency p-chloronitrobenzene removal with selective reduction","authors":"Jie Zhou , Xiaolei Hu , Zhengkun Luo , Xiaodong Li , Wei-xian Zhang , Zilong Deng","doi":"10.1016/j.jhazmat.2024.136520","DOIUrl":null,"url":null,"abstract":"<div><div>A poriferous nZVI aerogel (nZVI@UiO-66-NH<sub>2</sub>/TCNF) was elaborately constructed by in-situ deposition of nZVI on UiO-66-NH<sub>2</sub> and coupling with a bio-based TEMPO oxidized cellulose nanofiber (TCNF) substrate, followed by freeze-drying process for p-chloronitrobenzene (p-CNB) degradation. With degradation efficiency of above 85 % within 3 h under a wide pH range of 3–9, the nZVI@UiO-66-NH<sub>2</sub>/TCNF aerogel presented better p-CNB removal performance than other developed aerogels. Extended to 24 h, superior p-CNB removal performance (99.83 %) and 4-chloroaniline (p-CAN) selectivity (98.84 %) were successfully achieved. This could be attributed to 1) the facilitated mass transfer via concentration-gradient driving force with buffering and drag-reducing hydrated shear layer from porous channels of hydrophilic TCNF; 2) the enhanced adhesion of p-CNB onto UiO-66-NH<sub>2</sub> and accelerated electron transfer by Fe-O-Zr bonds, synergistically improving the nitro- reduction of p-CNB using nZVI. This work pioneered a unique paradigm, providing nZVI with both solid bio-based moldability and highly-selective removal for the treatment of chloronitrobenzene containing wastewater.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"481 ","pages":"Article 136520"},"PeriodicalIF":12.2000,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Hazardous Materials","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304389424030991","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}

引用次数: 0

Abstract

A poriferous nZVI aerogel (nZVI@UiO-66-NH₂/TCNF) was elaborately constructed by in-situ deposition of nZVI on UiO-66-NH₂ and coupling with a bio-based TEMPO oxidized cellulose nanofiber (TCNF) substrate, followed by freeze-drying process for p-chloronitrobenzene (p-CNB) degradation. With degradation efficiency of above 85 % within 3 h under a wide pH range of 3–9, the nZVI@UiO-66-NH₂/TCNF aerogel presented better p-CNB removal performance than other developed aerogels. Extended to 24 h, superior p-CNB removal performance (99.83 %) and 4-chloroaniline (p-CAN) selectivity (98.84 %) were successfully achieved. This could be attributed to 1) the facilitated mass transfer via concentration-gradient driving force with buffering and drag-reducing hydrated shear layer from porous channels of hydrophilic TCNF; 2) the enhanced adhesion of p-CNB onto UiO-66-NH₂ and accelerated electron transfer by Fe-O-Zr bonds, synergistically improving the nitro- reduction of p-CNB using nZVI. This work pioneered a unique paradigm, providing nZVI with both solid bio-based moldability and highly-selective removal for the treatment of chloronitrobenzene containing wastewater.

Abstract Image

查看原文本刊更多论文

纳米纤维素封装 nZVI@UiO-66-NH2 气凝胶用于选择性还原高效去除对氯硝基苯

通过在 UiO-66-NH2 上原位沉积 nZVI 并与生物基 TEMPO 氧化纤维素纳米纤维（TCNF）基底耦合，然后采用冷冻干燥工艺降解对氯硝基苯（p-CNB），精心构建了多孔 nZVI 气凝胶（nZVI@UiO-66-NH2/TCNF）。与其他开发的气凝胶相比，nZVI@UiO-66-NH2/TCNF 气凝胶在 3 小时内对对氯硝基苯（p-CNB）的降解效率超过 85%。延长至 24 小时后，成功实现了卓越的对 CNB 去除性能（99.83%）和 4-氯苯胺（p-CAN）选择性（98.84%）。这可能归功于：1）通过亲水性 TCNF 多孔通道的缓冲和减阻水合剪切层，浓度梯度驱动力促进了传质；2）UiO-66-NH2 增强了对 CNB 的附着力，Fe-O-Zr 键加速了电子转移，从而协同改善了使用 nZVI 对对 CNB 的硝基还原。这项工作开创了一种独特的模式，使 nZVI 既具有固体生物基成型性，又具有高选择性去除能力，可用于处理含氯硝基苯废水。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Hazardous Materials 工程技术-工程：环境

CiteScore

25.40

自引率

5.90%

发文量

3059

审稿时长

58 days

期刊介绍： The Journal of Hazardous Materials serves as a global platform for promoting cutting-edge research in the field of Environmental Science and Engineering. Our publication features a wide range of articles, including full-length research papers, review articles, and perspectives, with the aim of enhancing our understanding of the dangers and risks associated with various materials concerning public health and the environment. It is important to note that the term "environmental contaminants" refers specifically to substances that pose hazardous effects through contamination, while excluding those that do not have such impacts on the environment or human health. Moreover, we emphasize the distinction between wastes and hazardous materials in order to provide further clarity on the scope of the journal. We have a keen interest in exploring specific compounds and microbial agents that have adverse effects on the environment.