Preparation of iron selenide decorated 1T/2H molybdenum disulfide catalysts for peroxymonosulfate activation: Effect of phase transition

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-09-12 DOI:10.1016/j.seppur.2024.129612

Zihao Qi , Qiang Zhong , Chenmin Xu , Lei Huang , Yasheng Wang , Chengdu Qi , Yazi Liu , Huan He , Zhe Xu , Shaogui Yang

{"title":"Preparation of iron selenide decorated 1T/2H molybdenum disulfide catalysts for peroxymonosulfate activation: Effect of phase transition","authors":"Zihao Qi , Qiang Zhong , Chenmin Xu , Lei Huang , Yasheng Wang , Chengdu Qi , Yazi Liu , Huan He , Zhe Xu , Shaogui Yang","doi":"10.1016/j.seppur.2024.129612","DOIUrl":null,"url":null,"abstract":"<div>The sulfate radical-based advanced oxidation process is recognized as an effective approach for acetaminophen (ACT) degradation. Modification of MoS2 through phase engineering can contribute to enhancing peroxymonosulfate (PMS) activation performance. In this work, we decorated MoS2 with FeSe2, aiming to alter the 1T/2H phase ratio of MoS2. Experiments and calculations suggested that the incorporation of FeSe2 increases the activation pathway through the Fe(III)/Fe(II) cycle and prompts a phase transition from 2H to 1T, providing active sites and boosting charge transfer between FeSe2 and MoS2. The optimum catalyst (FeSe2@MoS2-10) showed high efficiency in PMS activation, achieving complete removal of ACT within 20 min. The pseudo-first-order rate constant (kapp) on this catalyst is 17.7 times higher than that of the MoS2/PMS system. This study provides a new direction for promoting phase transition and improving the catalytic reactivity of MoS2-based catalysts, expanding their potential applications in pharmaceutical wastewater treatment.</div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"355 ","pages":"Article 129612"},"PeriodicalIF":8.1000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586624033513","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The sulfate radical-based advanced oxidation process is recognized as an effective approach for acetaminophen (ACT) degradation. Modification of MoS₂ through phase engineering can contribute to enhancing peroxymonosulfate (PMS) activation performance. In this work, we decorated MoS₂ with FeSe₂, aiming to alter the 1T/2H phase ratio of MoS₂. Experiments and calculations suggested that the incorporation of FeSe₂ increases the activation pathway through the Fe(III)/Fe(II) cycle and prompts a phase transition from 2H to 1T, providing active sites and boosting charge transfer between FeSe₂ and MoS₂. The optimum catalyst (FeSe₂@MoS₂-10) showed high efficiency in PMS activation, achieving complete removal of ACT within 20 min. The pseudo-first-order rate constant (k_app) on this catalyst is 17.7 times higher than that of the MoS₂/PMS system. This study provides a new direction for promoting phase transition and improving the catalytic reactivity of MoS₂-based catalysts, expanding their potential applications in pharmaceutical wastewater treatment.

Abstract Image

查看原文本刊更多论文

制备用于过一硫酸盐活化的硒化铁装饰 1T/2H 二硫化钼催化剂：相变的影响

基于硫酸根的高级氧化工艺被认为是降解对乙酰氨基酚（ACT）的有效方法。通过相工程对 MoS2 进行修饰有助于提高过一硫酸盐（PMS）的活化性能。在这项工作中，我们用 FeSe2 装饰了 MoS2，旨在改变 MoS2 的 1T/2H 相比。实验和计算表明，FeSe2 的加入增加了铁(III)/铁(II)循环的活化途径，并促进了从 2H 到 1T 的相变，从而提供了活性位点并促进了 FeSe2 和 MoS2 之间的电荷转移。最佳催化剂（FeSe2@MoS2-10）在 PMS 活化方面表现出很高的效率，可在 20 分钟内完全去除 ACT。该催化剂的伪一阶速率常数 (kapp) 是 MoS2/PMS 系统的 17.7 倍。这项研究为促进相变和提高 MoS2 基催化剂的催化反应活性提供了新的方向，拓展了其在制药废水处理中的潜在应用。

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

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.