Photocatalytic Removal of Antibiotics on g-C3N4 Using Amorphous CuO as Cocatalysts

Abstract

Amorphous CuO is considered as an excellent cocatalyst, owing to its large surface area and superior conductivity compared with its crystalline counterpart. The current work demonstrates a facile method to prepare amorphous CuO, which is grown on the surface of graphitic carbon nitride (g-C3N4) and is then applied for the photocatalytic degradation of tetracycline hydrochloride. The prepared CuO/g-C3N4 composite shows higher photocatalytic activities compared with bare g-C3N4. Efficient charge transfer between g-C3N4 and CuO is confirmed by the photocurrent response spectra and photoluminescence spectra. This work provides a facile approach to prepare low-cost composites for the photocatalytic degradation of antibiotics to safeguard the environment.

Fe3O4@MIL-100(Fe) modified ZnS nanoparticles with enhanced sonocatalytic degradation of tetracycline antibiotic in water

“…Photoluminescence (PL) provides effective information about charge separation and recombination in semiconductor materials [36] . As shown in Fig.…”

Photocatalytic degradation of tetracycline hydrochloride with g-C3N4/Ag/AgBr composites

“…Figure 5B shows that the N1s spectrum can be divided into three peaks with a binding energy of 398.50, 399.25, and 400.80 eV respectively. The peak with a binding energy of 398.50 eV corresponds to the C-N=C bond of the 3-s-triazine ring, and the peaks at 399.25 as well as 400.80 eV belong to the C-(N) 3 and N-H structure respectively ( Zhao et al, 2021 ). Figure 5C shows the high-resolution energy spectrum of Ag 3d, and four peaks with different positions can be obtained through further fitting.…”

Graphitic carbon nitride (g-C3N4)-based photocatalytic materials for hydrogen evolution

“…To overcome the g-C 3 N 4 absorption edge of a band gap of 2.7 eV, organic dyes were employed as a driver to improve the visible-light photoactivity ( Bard and Fax., 1995 ; Kudo and Miseki., 2009 ; Kim et al, 2015 ), which were considered to dramatically extend the visible-light region of the band-gap of semiconductor ( Zhuang et al, 2019 ). However, the researches about H 2 production based on dye-sensitized carbon nitride were still insufficient, only few organic dyes such as metal-porphyrins ( Yu et al, 2014 ; Chen et al, 2015 ; Zhang et al, 2015 ; Zhuang et al, 2019 ; Liu et al, 2020 ), poly (3-hexylthiophene) ( Zhang et al, 2015 ), eosin Y (EY) ( Min and Liu., 2012 ; Wang et al, 2018 ; Qi et al, 2019 ; Xu et al, 2019 ; Nagaraja et al, 2020 ; Zhao et al, 2021 ) and erythrosin B (ErB) ( Wang et al, 2013 ; Zhang et al, 2017 ; Zhang et al, 2017 ) have been successfully applied to enhance the photocatalytic activity with improvement of the utilization efficiency of visible-light. In the process of H 2 generation, the organic dyes were damaged in oxidation reactions, and its stabilization could be realized with a porous support, which accelerates the transfer of electrons from the excited dye molecule to the active site in definition of a cocatalyst, in general use of noble metals (especially Pt).…”