Eco-friendly fabrication of rGO-Pr6O11 nanocomposites: Enhanced photocatalysis and smoke gas sensing performance

IF 3.4 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2025-09-09 DOI:10.1016/j.jics.2025.102084

S. Priyanka Chakradhar , B.R. Radha Krushna , S.C. Sharma , S. Sasidharan , R. Anitha , K. Manjunatha , Sheng Yun Wu , H. Nagabhushana

{"title":"Eco-friendly fabrication of rGO-Pr6O11 nanocomposites: Enhanced photocatalysis and smoke gas sensing performance","authors":"S. Priyanka Chakradhar , B.R. Radha Krushna , S.C. Sharma , S. Sasidharan , R. Anitha , K. Manjunatha , Sheng Yun Wu , H. Nagabhushana","doi":"10.1016/j.jics.2025.102084","DOIUrl":null,"url":null,"abstract":"<div><div>This study introduces a novel approach to the sonochemical synthesis and characterization of a multifunctional nanocomposites (NCs) composed of reduced graphene oxide (rGO) functionalized with praseodymium oxide (Pr6O11) nanoparticles (NPs). A green synthesis route was employed, utilizing Citrus sinensis and Syzygium samarangense fruit extracts as capping and reducing agents for the fabrication of Pr6O11 NPs and the reduction of graphene oxide (GO) respectively. Comprehensive characterizations, including TG-DTA, XRD, FT-IR, FE-SEM, EDX, TEM and XPS, were conducted to analyze the structural, morphological, and optical properties of rGO, Pr6O11, and the resulting rGO@Pr6O11 NCs. Morphological assessments confirmed the successful decoration of rGO surfaces with Pr6O11 NPs. The average crystallite size of the NCs, as determined from X-ray diffraction patterns, ranged between 22 and 23 nm. UV–Vis absorbance studies estimated the band gap of the NCs to be 2.65 eV. Photocatalytic performance was evaluated through the degradation of Congo red dye under sunlight. The results demonstrated a significant enhancement in photocatalytic efficiency, with Pr6O11 NPs achieving 70.98 % degradation and the rGO@Pr6O11 NCs facilitating complete degradation (100 %) within 100 min. The environmental impact of the synthesized NCs was further assessed by using treated dye wastewater for plant growth, resulting in healthy development of Macrotyloma uniflorum (horse gram) plants within one week, outperforming untreated dye solutions and normal water. Additionally, the rGO@Pr6O11 NCs exhibited excellent gas oxidation properties when exposed to smoke, significantly reducing CO levels by 98.93 % and achieving complete removal of NOx and SO2 gases, demonstrating its potential as a smoke sensor. The green synthesis approach highlights the biocompatibility and cost-effectiveness of the NCs, underscoring its potential in environmental remediation through applications in photocatalysis and air purification.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"102 11","pages":"Article 102084"},"PeriodicalIF":3.4000,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Indian Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0019452225005199","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study introduces a novel approach to the sonochemical synthesis and characterization of a multifunctional nanocomposites (NCs) composed of reduced graphene oxide (rGO) functionalized with praseodymium oxide (Pr₆O₁₁) nanoparticles (NPs). A green synthesis route was employed, utilizing Citrus sinensis and Syzygium samarangense fruit extracts as capping and reducing agents for the fabrication of Pr₆O₁₁ NPs and the reduction of graphene oxide (GO) respectively. Comprehensive characterizations, including TG-DTA, XRD, FT-IR, FE-SEM, EDX, TEM and XPS, were conducted to analyze the structural, morphological, and optical properties of rGO, Pr₆O₁₁, and the resulting rGO@Pr₆O₁₁ NCs. Morphological assessments confirmed the successful decoration of rGO surfaces with Pr₆O₁₁ NPs. The average crystallite size of the NCs, as determined from X-ray diffraction patterns, ranged between 22 and 23 nm. UV–Vis absorbance studies estimated the band gap of the NCs to be 2.65 eV. Photocatalytic performance was evaluated through the degradation of Congo red dye under sunlight. The results demonstrated a significant enhancement in photocatalytic efficiency, with Pr₆O₁₁ NPs achieving 70.98 % degradation and the rGO@Pr₆O₁₁ NCs facilitating complete degradation (100 %) within 100 min. The environmental impact of the synthesized NCs was further assessed by using treated dye wastewater for plant growth, resulting in healthy development of Macrotyloma uniflorum (horse gram) plants within one week, outperforming untreated dye solutions and normal water. Additionally, the rGO@Pr₆O₁₁ NCs exhibited excellent gas oxidation properties when exposed to smoke, significantly reducing CO levels by 98.93 % and achieving complete removal of NO_x and SO₂ gases, demonstrating its potential as a smoke sensor. The green synthesis approach highlights the biocompatibility and cost-effectiveness of the NCs, underscoring its potential in environmental remediation through applications in photocatalysis and air purification.

Abstract Image

查看原文本刊更多论文

rGO-Pr6O11纳米复合材料的环保制备：增强光催化和烟雾传感性能

本研究介绍了一种由氧化镨（Pr6O11）纳米粒子（NPs）功能化的还原氧化石墨烯（rGO）组成的多功能纳米复合材料（NCs）的声化学合成和表征的新方法。采用绿色合成路线，分别以柑桔和沙马根果实提取物为封盖剂和还原剂制备Pr6O11 NPs，还原氧化石墨烯（GO）。通过TG-DTA、XRD、FT-IR、FE-SEM、EDX、TEM和XPS等综合表征，分析了rGO、Pr6O11及其rGO@Pr6O11 NCs的结构、形态和光学性质。形态学评估证实了Pr6O11 NPs成功修饰氧化石墨烯表面。根据x射线衍射图测定的nc的平均晶粒尺寸在22至23 nm之间。紫外可见吸收研究估计NCs的带隙为2.65 eV。通过对刚果红染料在日光下的降解，评价了光催化性能。结果表明，光催化效率显著提高，pr6011 NPs的降解率达到70.98%，rGO@Pr6O11 NCs可在100分钟内完全降解（100%）。通过处理后的染料废水对植物生长的环境影响进行进一步评估，结果表明，Macrotyloma uniflorum（马克）植物在一周内健康发育，优于未经处理的染料溶液和正常水。此外，rGO@Pr6O11 NCs在暴露于烟雾中时表现出优异的气体氧化性能，显著降低了98.93%的CO水平，并实现了NOx和SO2气体的完全去除，显示了其作为烟雾传感器的潜力。绿色合成方法强调了纳米碳的生物相容性和成本效益，强调了其在光催化和空气净化方面的应用在环境修复方面的潜力。

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

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.