Efficient removal of toxic dyes and nitrophenol using Graphene Oxide-ZrO2 hybrid catalysts

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-06-28 DOI:10.1016/j.mseb.2025.118555

A. Amudha , K. Mahendra , I. Yashodhara , Jayadev Pattar , H.N. Anil Rao , H.D. Shashikala , S. Nagaraja Hosakoppa

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Abstract

In the current study, efficient removal of industrial dyes and nitrophenol by ZrO₂–GO catalyst has been reported. ZrO₂–GO nanoparticles were prepared using the hydrothermal technique and are characterized using X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Transmission Electron Microscopy (TEM), Photoluminescence (PL), Raman, and UV–visible spectroscopy techniques. The ability of the nanoparticles to degrade Methylene Blue (MB), Crystal Violet (CV), and Nitrophenol (NP) was examined for their photocatalytic activities. Results revealed that there is an increase in the crystallite size and pore size increased almost 2 times after adding 2 % GO in ZrO₂. The addition of GO into ZrO₂ also caused a decrease in the PL intensity and energy gap indicating an increase in the charge carriers. ZrO₂–GO nanoparticles showed photocatalytic degradation of 90 % (70 min), 98 % (90 min), and 70 % (120 min) for MB, CV, and NP respectively.

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使用氧化石墨烯- zro2杂化催化剂高效去除有毒染料和硝基苯酚

在目前的研究中，已经报道了ZrO2-GO催化剂对工业染料和硝基酚的高效去除。采用水热法制备了ZrO2-GO纳米颗粒，并利用x射线衍射（XRD）、布鲁诺尔-埃米特-泰勒（BET）、透射电子显微镜（TEM）、光致发光（PL）、拉曼和紫外可见光谱技术对其进行了表征。考察了纳米颗粒对亚甲基蓝（MB）、结晶紫（CV）和硝基酚（NP）的光催化活性。结果表明，在ZrO2中加入2%氧化石墨烯后，晶粒尺寸增大，孔径增大近2倍。在ZrO2中加入GO也导致了PL强度和能隙的降低，表明载流子的增加。ZrO2-GO纳米颗粒对MB、CV和NP的光催化降解率分别为90% （70 min）、98% （90 min）和70% （120 min）。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.