无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (8): 131-138.doi: 10.19964/j.issn.1006-4990.2024-0032

• 催化材料 • 上一篇    下一篇

甘蔗渣碳气凝胶负载纳米氧化锌的制备及其光催化性能研究

张国强1,2(), 戎西林1,2(), 肖振芳1,2, 薛自然1,2, 程昊1,2, 冯军1,2, 刘泉1, 陆瑶1, 黄文艺1,2()   

  1. 1.广西糖资源绿色加工重点实验室/生物与化学工程学院, 广西科技大学, 广西 柳州 545006
    2.蔗糖产业省部共建协同创新中心, 广西 南宁 530004
  • 收稿日期:2024-01-17 出版日期:2024-08-10 发布日期:2024-09-26
  • 通讯作者: 黄文艺(1975— ),男,博士,正高级实验师,主要从事纳米材料方向的研究;E-mail:hwylz18@163.com
  • 作者简介:张国强(1997— ),男,硕士研究生,主要研究方向为碳复合材料研究;E-mail:2722903434@qq.com
    戎西林(1998— ),男,硕士研究生,主要研究方向为碳复合材料研究;E-mail:1219402831@qq.com
  • 基金资助:
    广西糖资源绿色加工重点实验室开放课题(GXTZY202006)

Study on preparation and photocatalytic properties of bagasse carbon aerogels loaded with zinc oxide nanoparticles

ZHANG Guoqiang1,2(), RONG Xilin1,2(), XIAO Zhenfang1,2, XUE Ziran1,2, CHENG Hao1,2, FENG Jun1,2, LIU Quan1, LU Yao1, HUANG Wenyi1,2()   

  1. 1.Guangxi Key Laboratory of Green Processing of Sugar Resources,College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China
    2.Province and Ministry Co?operation;Collaborative Innovation Centre of Sugarcane and Sugar Industry,Nanning 530004,China
  • Received:2024-01-17 Published:2024-08-10 Online:2024-09-26

摘要:

通过浸渍-煅烧法成功制备出一系列甘蔗渣纤维素基碳气凝胶(BCCA)负载纳米氧化锌复合材料(BCCA/ZnO),并用于降解甲基橙染料(MO)。采用场发射扫描电镜(FE-SEM)、傅里叶变换红外光谱(FT-IR)、X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外-可见光漫反射(UV-Vis DRS)、N2吸附-脱附等测试方法对制备的BCCA/ZnO进行表征测试。研究结果表明,BCCA具有三维多孔网络状结构,经醋酸锌溶液浸泡、高温碳化后,在其表面原位生成球状纳米ZnO颗粒。在模拟紫外光条件下,BCCA/ZnO具有良好的催化活性,当pH=11时BCCA/ZnO-3可以在80 min内对MO的降解率为99%。重复使用4次后,BCCA/ZnO-3在80 min内对MO的降解率为99%,仍然具有优异的催化效果,表明BCCA/ZnO-3具有较好的稳定性和重复使用性。同时,探究了光催化降解机理,发现·OH起主要作用,h+起次要作用,而·O2-不起作用。

关键词: 光催化, ZnO, 碳气凝胶, 甘蔗渣纤维素

Abstract:

A series of bagasse cellulose⁃based carbon aerogel⁃loaded zinc oxide nanocomposite(BCCA/ZnO) catalysts were successfully prepared by immersion⁃calcination method for the degradation of Methyl Orange(MO) dye.The prepared BCCA/ZnO was characterised by field emission scanning electron microscopy(FE-SEM),Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflection(UV-visible DRS) and specific surface area,etc.The study revealed that BCCA possessed a three⁃dimensional porous network structure.After being soaked in a zinc acetate solution and undergoing high⁃temperature carbonisation,spherical ZnO nanoparticles were generated in situ on the surface of BCCA.Excellent catalytic activity of BCCA/ZnO was demonstrated by simulating the UV environment,in which BCCA/ZnO-3 could degrade the MO solution in 80 min for 99% under the optimal conditions of pH=11.After 4 repeated use,the degradation efficiency of BCCA/ZnO-3 for MO was 99% in 80 min,which still showed excellent catalytic effect,indicating that it had good stability and reusability.While,the photocatalytic degradation mechanism was investigated.It was found that ·OH played a major role,h+ played a minor role,and ·O2- did not play a role.

Key words: photocatalysis, ZnO, carbon aerogel, bagasse cellulose

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