Effect of rGO nanosheet loading in SiO2/rGO hybrid nanocomposites for enhancing optoelectrical, physical, and electrochemical properties

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials Pub Date : 2025-04-11 DOI:10.1016/j.diamond.2025.112330

Sunisar Khammahong , Chaiwat Phrompet , Chesta Ruttanapun , Chaval Sriwong

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Abstract

In this study, silicon dioxide nanoparticles (SiO₂NPs) mixed with reduced graphene oxide nanosheets (rGONS) and hybrid nanocomposites (S/rGOHNCs) were synthesized to study the opto-electrical, physical and electrochemical properties. S/rGOx%HNCs samples with rGONS at various loadings (10, 30, 50, and 70 wt%) were prepared SiO₂NPs and rGONS suspensions in ultrasonication process by conventional heating. The SiO₂NPs, rGONS and S/rGOx%HNCs were characterized and properties confirmed by XRD, Raman spectroscopy, FT-IR spectra, UV–Vis, SEM, EDX and TGA techniques. The electrical conductivity carrier concentration, energy gap, and dielectric constant increased with rGONS loading. The S/rGO30HNCs exhibited the highest thermal conductivity, 0.7 W/m·K, and Vickers microhardness, 41.0 HV. The value of electrochemical capacity of S/rGO70HNCs, 66.95 F/g, was due to the appropriate ratio of rGONS and SiO₂NPs which significantly contributed to increasing redox reaction. The findings offered SiO₂NPs mixed rGONS hybrid nanocomposites with enhanced optoelectrical (electrical, optical, dielectric), physical (mechanical, thermal) and electrochemical properties.

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负载氧化石墨烯纳米片对SiO2/氧化石墨烯杂化纳米复合材料光电、物理和电化学性能的影响

本研究合成了二氧化硅纳米颗粒（SiO2NPs）与还原氧化石墨烯纳米片（rGONS）的混合纳米复合材料（S/rGOHNCs），以研究其光电、物理和电化学性能。在超声波处理过程中，通过常规加热制备了含有不同负载量（10、30、50 和 70 wt%）rGONS 的 SiO2NPs 和 rGONS 悬浮液的 S/rGOx%HNCs 样品。通过 XRD、拉曼光谱、傅立叶变换红外光谱、紫外可见光、扫描电镜、EDX 和 TGA 技术对 SiO2NPs、rGONS 和 S/rGOx%HNCs 进行了表征并确认了其性质。导电载流子浓度、能隙和介电常数随着 rGONS 负载的增加而增加。S/rGO30HNCs 具有最高的热导率（0.7 W/m-K）和维氏显微硬度（41.0 HV）。S/rGO70HNCs 的电化学容量值为 66.95 F/g，这是由于 rGONS 和 SiO2NPs 的比例适当，大大促进了氧化还原反应。研究结果表明，SiO2NPs 与 rGONS 混合纳米复合材料具有更强的光电（电学、光学、介电）、物理（机械、热学）和电化学性能。

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来源期刊

Diamond and Related Materials 工程技术-材料科学：综合

CiteScore

6.00

自引率

14.60%

发文量

702

审稿时长

2.1 months

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.