Metal-free graphitic carbon nitride as a promising nano-adsorbent for the efficient photocatalytic degradation of toxic dyes: Recent trends and future perspectives

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Research & Design Pub Date : 2025-08-10 DOI:10.1016/j.cherd.2025.08.016

Vandana Saraswat , Sahil Kohli , Nitish Kumar Sinha , Gunjan Purohit , Navjot Sandhu , Suman Swami , Garima Rathee , Manish Rawat , Neeraj Kumari

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Abstract

Discharging untreated industrial wastewater into water bodies undoubtedly multiplies the adverse effects on the environment and human health. Over time, numerous methods have been employed to address the carcinogenicity and toxicity of dye effluents for water remediation and deactivation. Amongst available methods, the metal-free graphitic carbon nitride has proven effective as a nano-adsorbent for the photodegradation of toxic dyes. The modified g-C₃N₄ photocatalyst overcomes setbacks such as restricted surface area, poor charge separation, and lower charge mobility simply by coupling it with semiconductors, forming heterostructures, morphological modifications, exfoliation to nanosheets, and doping with metal/non-metal, among others, thereby practically making it useful for the dye degradation process. The present review aims to discuss and explore the use of modified g-C₃N₄ photocatalysts for the photodegradation process, which is a sustainable, efficient, and effective treatment for wastewater remediation processes.

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无金属石墨氮化碳作为一种有前途的纳米吸附剂用于高效光催化降解有毒染料：最新趋势和未来展望

将未经处理的工业废水排入水体无疑会对环境和人类健康造成更大的不利影响。随着时间的推移，已经采用了许多方法来解决染料废水的致癌性和毒性，用于水的修复和失活。在现有的方法中，无金属石墨氮化碳已被证明是一种有效的纳米吸附剂，用于光降解有毒染料。改性后的g-C3N4光催化剂通过与半导体耦合、形成异质结构、形态修饰、剥落到纳米片、掺杂金属/非金属等，克服了诸如限制表面积、电荷分离差和电荷迁移率低等挫折，从而使其在染料降解过程中发挥实际作用。本文旨在探讨利用改性g-C3N4光催化剂进行光降解工艺，是一种可持续、高效、有效的废水修复工艺。

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来源期刊

Chemical Engineering Research & Design 工程技术-工程：化工

CiteScore

6.10

自引率

7.70%

发文量

623

审稿时长

42 days

期刊介绍： ChERD aims to be the principal international journal for publication of high quality, original papers in chemical engineering. Papers showing how research results can be used in chemical engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in plant or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of traditional chemical engineering.