Quang Dinh Ho , Van Duy Lai , Quynh Anh Nguyen , Dinh Ngo Vu , Thi Khanh Lam Dang , Duc D. La
{"title":"Green synthesis of g-C3N4/CeO2 nanocomposites for enhanced photocatalytic degradation of organic dye under simulated sunlight","authors":"Quang Dinh Ho , Van Duy Lai , Quynh Anh Nguyen , Dinh Ngo Vu , Thi Khanh Lam Dang , Duc D. La","doi":"10.1016/j.diamond.2025.112484","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the synthesis and photocatalytic efficiency of g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> nanocomposites for Methylene Blue (MB) degradation under simulated sunlight. Using Cleistocalyx operculatus leaf extract as a green reducing agent, the nanocomposites were successfully synthesized. The g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> (1:4) composite demonstrated a high surface area (130.54 m<sup>2</sup>/g) and a band gap of 2.49 eV, enhancing light absorption. Photocatalytic tests revealed that it achieved 95.70 % MB degradation, surpassing pure g-C<sub>3</sub>N<sub>4</sub> (68.90 %) and CeO<sub>2</sub> (72.12 %). The degradation followed pseudo-first-order kinetics, with a rate constant 6.08 times higher than CeO<sub>2</sub> and 4.57 times higher than g-C<sub>3</sub>N<sub>4</sub>. This remarkable efficiency is attributed to the composite's large surface area, improved charge separation, and synergistic interaction between g-C<sub>3</sub>N<sub>4</sub> and CeO<sub>2</sub>. These findings highlight the potential of g-C<sub>3</sub>N<sub>4</sub>/CeO<sub>2</sub> nanocomposites as efficient, sustainable photocatalysts for organic dye degradation in wastewater treatment.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"157 ","pages":"Article 112484"},"PeriodicalIF":4.3000,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diamond and Related Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925963525005412","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
引用次数: 0
Abstract
This study investigates the synthesis and photocatalytic efficiency of g-C3N4/CeO2 nanocomposites for Methylene Blue (MB) degradation under simulated sunlight. Using Cleistocalyx operculatus leaf extract as a green reducing agent, the nanocomposites were successfully synthesized. The g-C3N4/CeO2 (1:4) composite demonstrated a high surface area (130.54 m2/g) and a band gap of 2.49 eV, enhancing light absorption. Photocatalytic tests revealed that it achieved 95.70 % MB degradation, surpassing pure g-C3N4 (68.90 %) and CeO2 (72.12 %). The degradation followed pseudo-first-order kinetics, with a rate constant 6.08 times higher than CeO2 and 4.57 times higher than g-C3N4. This remarkable efficiency is attributed to the composite's large surface area, improved charge separation, and synergistic interaction between g-C3N4 and CeO2. These findings highlight the potential of g-C3N4/CeO2 nanocomposites as efficient, sustainable photocatalysts for organic dye degradation in wastewater treatment.
期刊介绍:
DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices.
The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.