Efficient degradation of levofloxacin using a g-CN@glucose-derived carbon catalyst with adjustable N content via peroxymonosulfate activation.

Metal-free carbon-based catalysts hold great promise for the degradation of organic pollutants by peroxymonosulfate (PMS) activation because they avoid the negative effects of metal catalysts such as harmful metal ions leaching. However, these carbon-based catalysts are limited by their high cost and complex synthesis, and the mechanisms for the activation of PMS are unclear. Herein, the N-rich carbon catalysts (GCN-x) derived from glucose and g-CN were facilely synthesized by hydrothermal treatment and carbonization to explore the mechanism of PMS activation.

Efficient removal of antibiotic-resistant bacteria and intracellular antibiotic resistance genes by heterogeneous activation of peroxymonosulfate on hierarchical macro-mesoporous CoO-SiO with enhanced photogenerated charges.

Antibiotic resistance genes (ARGs) and their host antibiotic-resistant bacteria (ARB) are widely detected in the environment and pose a threat to human health. Traditional disinfection in water treatment plants cannot effectively remove ARGs and ARB. This study explored the potential of a heterogeneous photo-Fenton-like process utilizing a hierarchical macro-mesoporous CoO-SiO (MM CS) catalyst for activation of peroxymonosulfate (PMS) to inactivate ARB and degrade the intracellular ARGs.

Photo-Fenton-like degradation of antibiotics by inverse opal WO co-catalytic Fe/PMS, Fe/HO and Fe/PDS processes: A comparative study.

Advanced oxidation processes (AOPs) such as Fenton and Fenton-like process for pollutant removal have been widely reported. However, most papers choose one of the popular oxidants (HO, peroxymonosulfate (PMS) or peroxydisulfate (PDS)) as the oxidant via AOPs for pollutant degradation. The purpose of this work is to compare the degradation rates of the Fe/PMS, Fe/HO and Fe/PDS processes.

0D/3D coupling of g-CN QDs/hierarchical macro-mesoporous CuO-SiO for high-efficiency norfloxacin removal in photo-Fenton-like processes.

Photo-Fenton process is an advanced oxidation technology, which is used to eliminate organic pollutants in environmental pollution. In this paper, g-CN quantum dots incorporated hierarchical macro-mesoporous CuO-SiO (MM SC-QDs) composite was successfully fabricated by a dual-template method combined with polystyrene sphere (PS) crystal and copolymer F127. With the presence of HO, MM SC-QDs exhibited excellent degradation performance against the antibiotic pollutant norfloxacin (NOR) under visible-light assisted heterogeneous Fenton process at neutral condition, which was 27 times higher than that of the Bulk CuO-SiO.

Hierarchical macro-mesoporous g-CN with an inverse opal structure and vacancies for high-efficiency solar energy conversion and environmental remediation.

Hierarchical macro-mesoporous structures with an efficient mass transfer and light harvesting offer great advantages for photocatalysis. Nitrogen vacancy modified ordered hierarchical macro-mesoporous g-CN (Nv MM CN) was fabricated by a dual-templating method combining an ordered SiO colloidal crystal and NHCl. The as-prepared Nv MM CN was applied for photocatalytic degradation of antibiotics and production of hydrogen.

Z-scheme inverse opal CN/BiOBr photocatalysts for highly efficient degradation of antibiotics.

Optimizing the heterojunction structure of semiconductor photocatalysts is vital for utilizing their abilities in organic matter degradation. Herein, a novel fabrication of a Z-scheme system with inverse opal g-CN and BiOBr via a reflux process is developed. On the one hand, the unique inverse opal construction, formed by using silica (SiO) photonic crystals as the template, not only provides a larger surface area for adsorption of antibiotics but also improves the separation and transfer efficiency of photogenerated electrons and holes as well as visible light absorption ability.