A facile synthesis of hybrid nanocomposites of reduced graphene oxide/ZnO and its surface modification characteristics for ozone sensing

Jayachandiran, J.; Raja, A.; Arivanandhan, M.; Jayavel, R.; Nedumaran, D.

doi:10.1007/s10854-017-8239-x

Cited by 21 publications

(19 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Figure 2B, WO 3 nanorods are clearly observed. Choi et al demonstrated different morphologies of WO 3 such as nanowires, nanorods and nanosheets by varying the volume of water (%) and ethanol [20]. Marques et al have prepared different morphologies including nanoplates and nanoflowers by varying the initial precursor and the pH of the medium [21].…”

Section: Characterizationmentioning

confidence: 99%

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Hatel¹,

Baïtoul²

2021

Nanomechanics - Theory and Application

View full text Add to dashboard Cite

Trioxide Tungsten (WO3), an n-type semiconductor that exhibits a wide band gap of 2.5 to 3.6 eV, has attracted special attention from the scientific community. This attraction is due to its manifold properties, which not only follow the development of technologies, but accelerate it. There are several methods to synthesize WO3 nanostructures with various morphologies. In the present study, for the first time, a novel chemical method was developed for the preparation of WO3 nanostructures by using tungsten carbide (WC) as precursor. This novel approach has many advantages such as high yields, simple methodology and easy work up. Moreover, graphene oxide coated with WO3 nanostructured is prepared via in-situ and ex-situ chemical approaches followed by subsequent thermal treatment at 500°C. The obtained samples were characterized by different techniques to confirm the transformation of WC to WO3 nanostructures and the formation of their nanocomposites with graphene derivatives.

show abstract

Section: Characterizationmentioning

confidence: 99%

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Hatel¹,

Baïtoul²

2021

Nanomechanics - Theory and Application

View full text Add to dashboard Cite

show abstract

“…Finally, the remnant carbon content of the dye solution after degradation was evaluated by using a Shimadzu TOC-VCSH Total Organic Carbon (TOC) analyzer. [40][41][42].…”

Section: Photocatalysis Experimentsmentioning

confidence: 99%

Impregnation of ZnO onto a Vegetal Activated Carbon from Algerian Olive Waste: A Sustainable Photocatalyst for Degradation of Ethyl Violet Dye

Abdessemed

Rasalingam

Abdessemed³

et al. 2019

International Journal of Photoenergy

View full text Add to dashboard Cite

This study is aimed at developing a simple and low-cost method to fabricate ZnO-loaded porous activated carbon (AC-ZnO) prepared from the Algerian olive-waste cakes and utilize it as a photocatalyst for the degradation of Ethyl Violet dye. The synthesized AC-ZnO material was characterized using powder X-ray diffraction, BET surface area measurements, Raman microscopy, thermogravimetric analysis, UV-visible diffuse reflectance spectroscopy, and zeta potential measurements. The degradation efficiency was evaluated with Ethyl Violet (EV) dye in aqueous solution under UV irradiation supplied by a Xenon arc lamp through a Pyrex glass filter (cutoff 280 nm), and the degraded products were identified by using electrospray ionization mass spectroscopy. Additional experiments were carried out under N 2 flow and with isopropyl alcohol to examine the role of superoxide and hydroxyl radicals, respectively. The amount of • OH radical formed on irradiated AC-ZnO was tested with terephthalic acid which can act as a chemical trap for the • OH radicals. The results from this study indicate that the AC-ZnO is a potential catalyst for the pollutant removal and the • OH radicals are the key species for the degradation of EV. Further, this study opens up an opportunity to produce cheaper activated carbon support from olive wastes for environmental remediation applications.

show abstract

“…Entre os semicondutores óxidos metálicos do tipo n, o óxido de zinco (ZnO) é um dos materiais mais promissores para aplicação em sensores de gás. Isso deve-se a sua band gap direta, 3,37 eV, larga energia de ligação de excitação, 60 meV, alta estabilidade térmica e química e boa resistência a oxidação 13,14 . A temperatura de operação de sensores a base de ZnO é na faixa de 200 a 450°C 14 .…”

Section: Introductionunclassified

“…Para o gás ozônio, um gás oxidante, o ZnO apresentam alta sensibilidade e um longa estabilidade para uma baixa concentração de O3 em temperaturas de operação na faixa de 200 a 250°C. Contudo, é essencial melhorar a performance dos sensores de O3 para operar em temperatura ambiente devido as várias aplicações do gás ozônio na atualidade 13 .…”

Section: Introductionunclassified

“…Com base nos resultados mostrando uma melhoria no desempenho dos sensores baseado em nanocompósitos de rGO/ZnO, vários métodos químicos e físicos (CVD, DC magnetron sputtering, sínteses de grafeno, ZnO e nanocompósitos de rGO/ZnO entre outros) vem sendo estudado para sintetizar esse material. Porém, a alta temperatura e a instrumentação necessária para esses tipos de métodos restringem seu uso, pois o custo para a fabricação dos sensores de rGO/ZnO são altos 13 . Assim, este trabalho tem como objetivo o desenvolvimento de metodologias simples e de baixo custo para a produção de sensores de gás a base de nanocompósitos de rGO/ZnO.…”

Section: Introductionunclassified

See 1 more Smart Citation

Síntese e caracterização de óxido de grafeno reduzido (rGO) e nanocompósito de rGO/ZnO para aplicação em sensores de gás ozônio

Komorizono¹

View full text Add to dashboard Cite

show abstract

A facile synthesis of hybrid nanocomposites of reduced graphene oxide/ZnO and its surface modification characteristics for ozone sensing

Cited by 21 publications

References 75 publications

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Impregnation of ZnO onto a Vegetal Activated Carbon from Algerian Olive Waste: A Sustainable Photocatalyst for Degradation of Ethyl Violet Dye

Síntese e caracterização de óxido de grafeno reduzido (rGO) e nanocompósito de rGO/ZnO para aplicação em sensores de gás ozônio

Contact Info

Product

Resources

About

A facile synthesis of hybrid nanocomposites of reduced graphene oxide/ZnO and its surface modification characteristics for ozone sensing

Cited by 21 publications

References 75 publications

Synthesis of WO3 Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Synthesis of WO3 Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Impregnation of ZnO onto a Vegetal Activated Carbon from Algerian Olive Waste: A Sustainable Photocatalyst for Degradation of Ethyl Violet Dye

Síntese e caracterização de óxido de grafeno reduzido (rGO) e nanocompósito de rGO/ZnO para aplicação em sensores de gás ozônio

Contact Info

Product

Resources

About

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach

Synthesis of WO₃ Nanostructures and Their Nanocomposites with Graphene Derivatives via Novel Chemical Approach