One-pot microwave-hydrothermally synthesized carbon nanotube-cerium oxide nanocomposites for enhanced visible photodegradation of acid orange 7

Heyun Jiang; Shengsong Ge; Yu Zhang; Mei Liu; Jiaoxia Zhang; Jing Lin; Mengyao Dong; Junxiang Wang; Zhanhu Guo

doi:10.1039/d0cp00431f

One-pot microwave-hydrothermally synthesized carbon nanotube-cerium oxide nanocomposites for enhanced visible photodegradation of acid orange 7

Phys Chem Chem Phys. 2020 Oct 28;22(41):23743-23753. doi: 10.1039/d0cp00431f.

Authors

Heyun Jiang¹, Shengsong Ge¹, Yu Zhang¹, Mei Liu¹, Jiaoxia Zhang², Jing Lin³, Mengyao Dong⁴, Junxiang Wang¹, Zhanhu Guo⁵

Affiliations

¹ College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China. geshengsong@126.com yezi3117@163.com wangjunxiang1018@sdust.edu.cn.
² School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China and Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA. zguo10@utk.edu nanomaterials2000@gmail.com.
³ School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, China. linjing@gzhu.edu.cn.
⁴ Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, China and Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA. zguo10@utk.edu nanomaterials2000@gmail.com.
⁵ Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA. zguo10@utk.edu nanomaterials2000@gmail.com.

PMID: 33057548
DOI: 10.1039/d0cp00431f

Abstract

Carbon nanotubes (CNT)-cerium oxide (CeO2) nanocomposites were fabricated successfully by one-pot microwave hydrothermal growth of regular CeO2 nanoparticles with a size of 8 nm on hydroxyl-functionalized multi-walled CNTs. These nanocomposite photocatalysts demonstrated an acid orange (AO7) photocatalytic degradation efficiency of above 90% under solar-simulated light irradiation for 3 h, which was much higher than that of the pure CeO2 nanoparticles. The enhanced photocatalytic activity was observed to mainly originate from the ˙O2- and hole traps, while the hydroxyl radical ˙OH played a secondary role.