In this study, g-CN was synthesized by thermal polycondensation of melamine and was characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, UV-visible diffuse reflection spectroscopy, and scanning electron microscopy. Results showed that g-CN degraded sulfadimidine (SMD) under visible light, in which the adsorption and photocatalytic degradation was influenced by pH. The maximum adsorption capacity was achieved at approximately pH 5. The highest degradation rate constant was obtained at strong acid and alkali. In addition, the degradation mechanism of g-CN was evaluated with the help of quencher agents. The intermediates, degradation pathways, and mineralization of SMD were also determined to evaluate the degradation and oxidation ability of g-CN.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11356-017-8448-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Isomer-Effects of Aminophenol Decorated Gold Nanoclusters for HO Photoproduction via Two-Step One-Electron Oxygen Reduction Reaction.
Small
January 2025
Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, P. R. China.
Gold (Au) nanoclustersare promising photocatalysts for biomedicine, sensing, and environmental remediation. However, the short carrier lifetime, inherent instability, and unclear charge transfer mechanism hinder their application. Herein, the Au nanoclusters decorated with three different isomers of o-Aminophenol, m-Aminophenol, and p-Aminophenol are synthesized, namely o-Au, m-Au, and p-Au, which achieve efficient hydrogen peroxide (HO) photoproduction through two-step one-electron oxygen reduction reaction (ORR).
View Article and Find Full Text PDFFe, N-CQDs triggered the fabrication of alginate encapsulated g-CN hydrogel for efficient photocatalytic activation of PMS and antibiotic degradation.
Carbohydr Polym
March 2025
School of Environmental and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China. Electronic address:
Carbon dots (CDs) mediated g-CN (CN) is a promising visible-light-driven semiconductor in catalyzing peroxymonosulfate (PMS) for aqueous contaminants remediation. However, the poor dispersibility of powered catalyst and its challenging recyclability impede their broader application. Herein, we embedded FeN bridge within the g-CN framework and immobilized g-CN gel beads (CA/FNCCN) through a 3D cross-linking process with sodium alginate.
View Article and Find Full Text PDFNitrogen-Bridged S-N-Cu Sites for CO2 Photoreduction to Ethanol with 99.5% Selectivity in Pure Water.
Angew Chem Int Ed Engl
January 2025
University of Science and Technology of China, Chemistry, Jinzhai Road 96, 230026, Hefei, CHINA.
Solar-driven CO2 reduction to ethanol is extremely challenging due to the limited efficiency of charge separation, sluggish kinetics of C-C coupling, and unfavorable formation of oxygenate intermediates. Here, we elaborately design a red polymer carbon nitride (RPCN) consisting of S-N and Cu-N4 dual active sites (Cu/S-RPCN) to address this challenge, which achieves an impressive ethanol evolution rate of 50.4 µmol g-1 h-1 with 99.
View Article and Find Full Text PDFHydrogen-localization Transfer Regulation in 3D COFs Enhances Photocatalytic Acetylene Semi-hydrogenation to Ethylene.
Angew Chem Int Ed Engl
January 2025
South China Normal University, school of chemistry, No. 378, Waihuan West Road, Panyu District, 510006, Guangzhou, CHINA.
In this work, a series of new crystalline three-dimensional covalent organic frameworks (3D COFs) based on [8+4] construction was designed and successfully realized efficient photocatalytic acetylene (C2H2) hydrogenation to ethylene (C2H4). By regulating the hydrogen-localization transfer effect in these 3D COFs，the Cz-Co-COF-H containing cobalt glyoximate active centers exhibited excellent C2H2-to-C2H4 performance, with an average C2H4 yield of 1755.33 μmol g-1 h-1 in pure C2H2, also showed near 100% conversion of C2H2 in 1% C2H2 contained crude C2H4 mixtures (industry-relevant conditions), and finally obtain polymer grade C2H4.
View Article and Find Full Text PDFSynergistic design of a graphene oxide-mediated polyaniline/α-FeO ternary heterostructure: advancing photocatalytic degradation and adsorption efficiency.
Nanoscale
January 2025
Department of Chemistry, Faculty of Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia.
With the growing threat of organic pollutants in water bodies, there is an urgent need for sustainable and efficient water decontamination methods. This research focused on synthesizing a novel Z-scheme ternary heterostructure composed of graphene oxide (GO)-mediated polyaniline (PANI) with α-FeO and investigated its potential in brilliant green (BrG) and ciprofloxacin (CIP) degradation tests under visible light. The ternary composite demonstrated exceptional photocatalytic activity, with the optimized 10%PANI/GO/α-FeO (10PGF) photocatalyst achieving 99.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!