Visible-light photocatalytic activity of ZnO enhanced by single-walled carbon nanotubes

LU Yanhong; XU Yanhong; ZHANG Suling; BAI Xiaojie; HUANG Yi; CHEN Yongsheng

doi:10.3969/j.issn.0438-1157.2014.07.048

您当前的位置：

首页 >

文章列表页 >

Visible-light photocatalytic activity of ZnO enhanced by single-walled carbon nanotubes

更新时间：2025-12-10

- Visible-light photocatalytic activity of ZnO enhanced by single-walled carbon nanotubes
- CIESC Journal Issue 7, Pages: 2855-2860(2014)
- 作者机构：
  
  1. 廊坊师范学院化学与材料科学学院,河北,廊坊,065000
  2. 南开大学化学学院高分子所, 天津化学化工协同创新中心,天津,300071
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.07.048
  CLC： 643X703
- Online First：05 July 2014，
  
  Published：05 July 2014
- 稿件说明：
移动端阅览
LU Yanhong, XU Yanhong, ZHANG Suling, et al. Visible-light photocatalytic activity of ZnO enhanced by single-walled carbon nanotubes[J]. CIESC Journal, 2014, (7): 2855-2860.
DOI：

LU Yanhong, XU Yanhong, ZHANG Suling, et al. Visible-light photocatalytic activity of ZnO enhanced by single-walled carbon nanotubes[J]. CIESC Journal, 2014, (7): 2855-2860. DOI： 10.3969/j.issn.0438-1157.2014.07.048.

摘要

利用醋酸锌为原料，采用溶胶-凝胶法制备了单壁碳纳米管（SWMTs）和氧化锌的纳米复合物（ZnO/SWNTs）。用X射线衍射光谱（XRD）、拉曼光谱、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、热重分析（TGA）、傅里叶变换红外光谱（FT-IR）以及紫外-可见吸收光谱（UV-Vis）对复合物进行了表征。结果显示，粒径为10～20 nm的ZnO粒子均匀地负载在SWNTs表面，且在可见光区具有很好的光吸收性能。研究了ZnO/SWNTs光催化剂在太阳光照射下对甲基橙和亚甲基蓝的光催化降解情况。结果表明，复合物的催化活性明显高于ZnO。对于甲基橙，光照200 min后，降解率为99.8%，是纯ZnO（4.8%）的20倍；对于亚甲基蓝，仅光照20 min，降解率就达到了98.4%，是纯ZnO（4.0%）的25倍。

Abstract

Nanocomposite ZnO/SWNTs of zinc oxide (ZnO) and single-walled carbon nanotubes (SWNTs) were fabricated by a sol-gel method using Zn(CH3COO)2·2H2O as raw material. The samples were characterized by X-ray diffraction spectroscopy

Raman spectroscopy

scanning electron microscopy

transmission electron microscopy

thermogravimetric analysis

Fourier transformed infrared spectroscopy and ultraviolet-visible spectroscopy. The results show that ZnO nanoparticles with the size of about 10 — 20 nm are closely deposited on the sidewalls of SWNTs and the nanocomposite presents enhanced absorption ability in the visible region. The composite exhibits a dramatically improved photocatalytic activity to decompose methyl orange and methylene blue in aqueous solutions under natural light. The photodegradation rate for methyl orange is 99.8% after 200 min

which is about 20 times that of pure ZnO (4.8%). For methylene blue

the degradation rate reaches 98.4% after 20 min

which is about 25 times that of pure ZnO (4.0%).

关键词

Keywords

references

Views

463

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Chloride-enhanced activation of peroxymonosulfate via ferrous iron for degradation of PBTC and simultaneous recovery of phosphorus

CNT-Co/Bi2O3 catalyst photocatalytic synergistic activation of persulfate for efficient degradation of tetracycline

Research of enhanced carbon nanotubes activated peroxymonosulfate by cerium doping

Degradation of bisphenol A by peroxymonosulfate activated by MnFe2O4 prepared by salt-assisted solution combustion synthesis

Synthesis and photocatalytic activity of RGO-BiOCl/Bi2WO6 heterojunction photocatalyst by microwave etching method

Related Author

WEN Shuozhao

LIU Xueyu

LI Jiaxi

WU Xiangyang

GUO Zhenjie

LING Yu

LI Yibing

ZHANG Juanjuan

Related Institution

Institute of Water Ecological Environment, Chinese Research Academy of Environmental Sciences

School of Civil and Transportation Engineering, Hebei University of Technology

National Joint Research Center for Ecological Conservation and High Quality Development of the Yellow River Basin

State Key Laboratory of Heavy Oil Processing, College of New Energy and Materials， China University of Petroleum

Organic Chemical Plant of Sinopec Beijing Yanshan Company

⁰