固态热解制备Co_3O_4纳米材料及其在水处理中的应用
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- 英文论文题名：One-step Solid-state synthesis of porous CO_3O_4 nanoparticles and its application in wastewater treatment
- 论文作者：刘欣欣 ; 高文齐 ; 耿红帅 ; 王连英 ; 何静
- 英文论文作者：Xinxin Liu ; Wenqi Gao ; Hongshuai Geng ; Lianying Wang ; Jing He ; State Key Laboratory of Chemical Resource Engineering ; Beijing University of Chemical Technology
- 年：2016
- 作者机构：北京化工大学化工资源有效利用国家重点实验室;
- 论文关键词：Co_3O_4 ; PMS ; 高级氧化 ; 橙黄Ⅱ
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十七分会：纳米催化
- 语种：中文
- 分类号：X703;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：200k
- 原文格式：D
- 会议级别：全国
摘要
工业染料废水已成为影响水环境质量的主要有机污染源,高级氧化技术利用KHSO_5(PMS)在Co_3O_4的催化作用下产生的高活性自由基(·SO_4~-)可以有效的降解持久性有机污染物,因此合成高催化性能、低成本的Co_3O_4在环境治理方面具有重要意义。本文以层状氢氧化钴为前驱体,通过一步固态热解合成了高质量的Co_3O_4纳米材料。XRD、SEM、TEM、FTIR、和N_2吸脱附等表征结果显示:单分散的Co_3O_4纳米粒子(<8nm)具有高的纯度和结晶度;该材料具有丰富的孔结构和大的比表面积。将制备的Co_3O_4作为催化剂,PMS作为氧化剂,难降解的有机染料橙黄Ⅱ(OrangeⅡ)作为目标污染物进行催化性能评价。研究发现,该方法制备的Co_3O_4纳米颗粒降解OrangeⅡ的效率是商业化Co_3O_4催化剂的8倍,循环使用5次后催化降解效率仍高达95%。
Advanced oxidation processes(AOPs) are generally recognized as one of the excellent wastewater treatment technologies for degradation of organic pollutants owing to the creation of highly reactive radicals,such as sulfate radical(·SO_4~-) and hydroxyl radical(·OH~-).Here,we develop a facial,green and low-cost solid-state pyrolysis strategy to synthesize Co_3O_4 using a layered cobalt hydroxide precursor.A serious of characterizations demonstrate that porous Co_3O_4 nanoparticles(NPs) with high purity and crystallinity have been prepared successfully.Furthermore,the as-prepared porous Co_3O_4 NPs exhibit much better catalytic activity and stability than commercial Co_3O_4 catalysts towards Orange II degradation using PMS under the same conditions.
Advanced oxidation processes(AOPs) are generally recognized as one of the excellent wastewater treatment technologies for degradation of organic pollutants owing to the creation of highly reactive radicals,such as sulfate radical(·SO_4~-) and hydroxyl radical(·OH~-).Here,we develop a facial,green and low-cost solid-state pyrolysis strategy to synthesize Co_3O_4 using a layered cobalt hydroxide precursor.A serious of characterizations demonstrate that porous Co_3O_4 nanoparticles(NPs) with high purity and crystallinity have been prepared successfully.Furthermore,the as-prepared porous Co_3O_4 NPs exhibit much better catalytic activity and stability than commercial Co_3O_4 catalysts towards Orange II degradation using PMS under the same conditions.
引文
[1]Wang,L.;Lu,S.;Zhou,Y.;Guo,X.Chem.Commun.,2011,47:11002.
[2]Wang,C.;Shi,P.;Cai,X.;Xu.Q.J.Pys.Chem.C,2016,120:336.
[2]Wang,C.;Shi,P.;Cai,X.;Xu.Q.J.Pys.Chem.C,2016,120:336.