Preparation of Ni(OH)2/CuO heterostructures for improved photocatalytic degradation of organic pollutants and microorganism

Er-Chieh Cho; Cai-Wan Chang-Jian; Jen-Hsien Huang; Tzu-Yen Huang; Nian-Jheng Wu; Man-Tzu Li; Yi-Lun Chen; Shih-Chieh Hsu; Huei Chu Weng; Kuen-Chan Lee

doi:10.1016/j.chemosphere.2022.134484

Preparation of Ni(OH)₂/CuO heterostructures for improved photocatalytic degradation of organic pollutants and microorganism

Chemosphere. 2022 Aug:300:134484. doi: 10.1016/j.chemosphere.2022.134484. Epub 2022 Apr 5.

Authors

Er-Chieh Cho¹, Cai-Wan Chang-Jian², Jen-Hsien Huang³, Tzu-Yen Huang⁴, Nian-Jheng Wu⁵, Man-Tzu Li⁶, Yi-Lun Chen⁷, Shih-Chieh Hsu⁸, Huei Chu Weng⁹, Kuen-Chan Lee¹⁰

Affiliations

¹ School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei City, 110, Taiwan; Cancer Center, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan.
² Department of Mechanical and Automation Engineering, I-Shou University, No.1, Sec. 1, Syuecheng Rd., Dashu District, Kaohsiung City, 84001, Taiwan.
³ Department of Green Material Technology, Green Technology Research Institute, CPC Corporation, No.2, Zuonan Rd., Nanzi District, Kaohsiung City, 81126, Taiwan.
⁴ National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu Science Park, Hsinchu, 30076, Taiwan.
⁵ Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires D'Orsay, 91405, Orsay, France.
⁶ School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wuxing Street, Taipei City, 110, Taiwan.
⁷ Department of Science Education, National Taipei University of Education, No. 134, Sec. 2, Heping E. Road, Da-an District, Taipei City, 106, Taiwan.
⁸ Department of Chemical and Materials Engineering, Tamkang University, No. 151, Yingzhuan Road, Tamsui District, New Taipei City, 25137, Taiwan. Electronic address: [email protected].
⁹ Department of Mechanical Engineering, Chung Yuan Christian University, No. 200, Chungpei Rd, Chungli District, Taoyuan City, 32023, Taiwan. Electronic address: [email protected].
¹⁰ Department of Science Education, National Taipei University of Education, No. 134, Sec. 2, Heping E. Road, Da-an District, Taipei City, 106, Taiwan; PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, 250 Wuxing Street, Taipei City, 110, Taiwan. Electronic address: [email protected].

PMID: 35395258
DOI: 10.1016/j.chemosphere.2022.134484

Abstract

In this study, the Ni(OH)₂/CuO heterostructured photocatalysts have been prepared via microwave (MW) hydrothermal method. The results indicate that the Ni(OH)₂/CuO heterostructured composite exhibits a strong absorption in the UV and Vis regions. The construction of the heterojunction also improves the photogenerated carrier transport and inhibits the electron-hole separation due to the enhanced absorbance and the well alignment of the energy band at the Ni(OH)₂/CuO interface. The photocatalytic capability of the heterostructured composites with different Ni(OH)₂/CuO molar ratios is evaluated by the photodegradation of methylene blue under visible light illumination. The results reveal that the Ni(OH)₂/CuO (1:1) heterostructures show the best photocatalytic efficiency, which is 2.18 and 6.13 times higher than that of pure Ni(OH)₂ and CuO, respectively. Besides, the Ni(OH)₂/CuO composites also reveal remarkable biocompatibility and strong photocatalytic activity in the degradation of antibiotics such as ciprofloxacin (CIP) and tetracycline (TC) and inactivation of Escherichia coli (E. coli).

Keywords: CuO; Heterojunction; Microorganism; Ni(OH)(2); Photocatalyst.

MeSH terms

Anti-Bacterial Agents
Catalysis
Copper / chemistry
Environmental Pollutants*
Escherichia coli

Substances

Anti-Bacterial Agents
Environmental Pollutants
Copper
cupric oxide