Photocatalytic Efficacy and Degradation Kinetics of Chitosan-Loaded Ce-TiO2 Nanocomposite towards for Rhodamine B Dye

IF 3.8 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysts Pub Date : 2023-12-11 DOI:10.3390/catal13121506

Anish Clastin Indira, Jayarajan Muthaian, M. Pandi, Faruq Mohammad, H. Al-Lohedan, A. A. Soleiman

{"title":"Photocatalytic Efficacy and Degradation Kinetics of Chitosan-Loaded Ce-TiO2 Nanocomposite towards for Rhodamine B Dye","authors":"Anish Clastin Indira, Jayarajan Muthaian, M. Pandi, Faruq Mohammad, H. Al-Lohedan, A. A. Soleiman","doi":"10.3390/catal13121506","DOIUrl":null,"url":null,"abstract":"The recent advancement in the production of nanomaterials with novel architectures and functionality has allowed for the effective treatment of industrial wastewaters and contaminated soil and, in that view, the current study aimed to investigate the catalytic efficacy of biopolymer-loaded titanium nanocomposite. Therefore, Cerium (Ce)-titanium dioxide (TiO2) loaded chitosan nanocomposite was formed and studied its catalytic efficacy towards the degradation of an industrial dye pollutant. For the production of Ce-TiO2/chitosan nanocomposite, we followed the hydrothermal synthesis route and the formed nanocomposite was thoroughly analyzed for the crystallinity (using powdered X-ray diffraction, XRD), surface bonding, and nature (using Fourier transform infrared, FTIR spectroscopy), morphology (scanning electron microscopy, SEM), elemental composition (electron diffraction analysis by X-rays, EDAX), porosity (Brunauer–Emmett–Teller, BET), and particles size in powdered form (transmission electron microscopy, TEM). Then the efficiency of synthesized nanocomposite was tested towards the photocatalytic degradation of Rhodamine B (Rh B) dye by applying various parameters such as the irradiation time, solution pH, catalyst dosage, and the dye concentration. Further, the Langmuir–Hinshelwood model was employed to investigate the kinetics of RhB degradation and provided a conceivable photocatalytic mechanism. It was indicated based on the catalyst mechanism that the modification of TiO2 nanoparticles with Ce and loading onto chitosan biopolymer may have accelerated the photocurrent transport due to an increase in the number of electrons and holes generated by the photon’s irradiation. In this way, the study has witnessed the excellent photocatalytic performance of Ce-TiO2/chitosan with 95% Rh B degradation as against the pure TiO2 nanoparticles thus stressing the importance of developing novel composite photocatalysts.","PeriodicalId":9794,"journal":{"name":"Catalysts","volume":"35 3","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysts","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3390/catal13121506","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The recent advancement in the production of nanomaterials with novel architectures and functionality has allowed for the effective treatment of industrial wastewaters and contaminated soil and, in that view, the current study aimed to investigate the catalytic efficacy of biopolymer-loaded titanium nanocomposite. Therefore, Cerium (Ce)-titanium dioxide (TiO2) loaded chitosan nanocomposite was formed and studied its catalytic efficacy towards the degradation of an industrial dye pollutant. For the production of Ce-TiO2/chitosan nanocomposite, we followed the hydrothermal synthesis route and the formed nanocomposite was thoroughly analyzed for the crystallinity (using powdered X-ray diffraction, XRD), surface bonding, and nature (using Fourier transform infrared, FTIR spectroscopy), morphology (scanning electron microscopy, SEM), elemental composition (electron diffraction analysis by X-rays, EDAX), porosity (Brunauer–Emmett–Teller, BET), and particles size in powdered form (transmission electron microscopy, TEM). Then the efficiency of synthesized nanocomposite was tested towards the photocatalytic degradation of Rhodamine B (Rh B) dye by applying various parameters such as the irradiation time, solution pH, catalyst dosage, and the dye concentration. Further, the Langmuir–Hinshelwood model was employed to investigate the kinetics of RhB degradation and provided a conceivable photocatalytic mechanism. It was indicated based on the catalyst mechanism that the modification of TiO2 nanoparticles with Ce and loading onto chitosan biopolymer may have accelerated the photocurrent transport due to an increase in the number of electrons and holes generated by the photon’s irradiation. In this way, the study has witnessed the excellent photocatalytic performance of Ce-TiO2/chitosan with 95% Rh B degradation as against the pure TiO2 nanoparticles thus stressing the importance of developing novel composite photocatalysts.

查看原文本刊更多论文

壳聚糖负载型 Ce-TiO2 纳米复合材料对罗丹明 B 染料的光催化效率和降解动力学研究

最近在生产具有新型结构和功能的纳米材料方面取得的进展使得有效处理工业废水和受污染土壤成为可能，因此，本研究旨在调查负载生物聚合物的钛纳米复合材料的催化功效。因此，研究人员制备了负载壳聚糖的铈（Ce）-二氧化钛（TiO2）纳米复合材料，并研究了其对降解工业染料污染物的催化功效。为了制备 Ce-TiO2/ 壳聚糖纳米复合材料，我们采用了水热合成路线，并对所形成的纳米复合材料的结晶度（使用粉末 X 射线衍射，XRD）、表面键合和性质（使用傅立叶变换红外光谱，FTIR）进行了全面分析、傅立叶变换红外光谱）、形貌（扫描电子显微镜，SEM）、元素组成（X 射线电子衍射分析，EDAX）、孔隙率（布鲁纳-艾美特-泰勒，BET）和粉末状颗粒大小（透射电子显微镜，TEM）。然后，通过应用各种参数，如照射时间、溶液 pH 值、催化剂用量和染料浓度，测试了合成纳米复合材料光催化降解罗丹明 B（Rh B）染料的效率。此外，还采用 Langmuir-Hinshelwood 模型研究了 RhB 降解动力学，并提供了一种可想象的光催化机理。根据催化机理，研究表明，用 Ce 修饰 TiO2 纳米粒子并将其负载到壳聚糖生物聚合物上，可能会由于光子照射产生的电子和空穴数量增加而加速光电流传输。由此可见，与纯 TiO2 纳米粒子相比，Ce-TiO2/壳聚糖具有卓越的光催化性能，Rh B 降解率高达 95%，从而强调了开发新型复合光催化剂的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Catalysts CHEMISTRY, PHYSICAL-

CiteScore

6.80

自引率

7.70%

发文量

1330

审稿时长

3 months

期刊介绍： Catalysts (ISSN 2073-4344) is an international open access journal of catalysts and catalyzed reactions. Catalysts publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.