Photocatalytic activities using a nanocomposite of mesoporous SiO2 and CdInSe-graphene nanoparticles under visible light irradiation

Oh, Won‐Chun; Cho, Kwang Youn; Jung, Chong‐Hun; Nguyen, Dinh Cung Tien

doi:10.1016/j.jphotochem.2018.11.025

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…In spite of very good activity of metal oxide nanoparticles under UV light irradiation, the wide‐bandgap and prompt recombination of photogenerated charges reduce the efficiency under sunlight (Cuerda‐Correa et al, 2020). Among the photocatalyst, silica has received considerable attention for its properties, such as easily synthesized by sol–gel process, high stability, nontoxic, biocompatibility, large surface area, mesoporous texture, and adjustable nano pore size (Bagheri et al, 2020; Didó et al, 2020; Made Joni et al, 2019; Narayan et al, 2018; Nemiwal & Kumar, 2021; Oh et al, 2019). Among the mentioned characteristics, the porosity nature of silica ensures the enhancement of contaminant adsorption on the catalyst surface thereby increasing the water decontamination efficiency (Cui et al, 2017, Jain, Dhali, et al, 2022, Malik et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination

Alizadeh,

Dorranian,

Sari

2023

Microscopy Res & Technique

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Photocatalytic disinfection of Escherichia coli suspension by silicon dioxide nanoparticles and silicon dioxide/gold nanocomposite in a batch reactor is investigated experimentally and results are compared. Silica nanoparticles were synthesized by Stöber method and pulsed laser ablation method was employed to prepare gold nanoparticles in distilled water. Composition of two nanoparticles species was carried out, using the second harmonic pulse of Nd:YAG laser, whose wavelength is in the absorption spectra of gold nanoparticles. Results confirm a decrease in the bandgap energy of silica nanoparticles after composition. Escherichia coli were selected as an indicator of the microbial water contamination. Disk diffusion method was used to evaluate the antimicrobial potential of SiO2 and Au@SiO2 nanostructures. Photocatalytic activities of both nanostructures were examined in dark, and under the irradiation of UV and visible light. In all conditions, the performance of Au@SiO2 nanocomposites was higher than SiO2 nanoparticles. In dark condition the higher biocidal nature and activity of Au nanoparticles and for the case of UV radiation, decreasing the bandgap energy and recombination rate of SiO2 nanoparticles after composition with Au increased the efficiency. For the case of visible light radiation, surface plasmon resonances effects, and local heat of Au nanoparticles were responsible for increasing the efficiency.Research Highlights Doping large bandgap semiconductors nanostructures, such as silica with metal nanoparticles, such as gold will improve their photocatalytic activity to work in visible light. In this mechanism, gold nanoparticles act as effective traps to prevent the recombination of photogenerated electron–hole pairs. Other mechanisms, such as Schottky barrier formation, surface plasmon resonance absorption of gold nanoparticles, and biocidal nature of the gold nanoparticles are effective in increasing the efficiency of Au doped silica nanostructures.

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Section: Introductionmentioning

confidence: 99%

Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination

Alizadeh,

Dorranian,

Sari

2023

Microscopy Res & Technique

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“…Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) possesses high conductivity and is known as an excellent hole-transporting material with high hole mobility in solar cells and organic light-emitting devices. − It is also used as an electrode material in organic/polymeric electronics and optoelectronics, including i OSCs, SCs, chemo/biosensors, and transistors. − Moreover, a modification of the PEDOT:PSS with carbon nanomaterials such as graphene oxide (GO) or CNTs can create a synergic effect with both components, resulting in better hole selection ability and conductivity properties, a larger active surface area, and higher capacitance-storage ability for SCs. − …”

Section: Introductionmentioning

confidence: 99%

Solar-Powered Supercapacitors Integrated with a Shared Electrode

Nguyen

Shin

Kim

et al. 2021

ACS Appl. Energy Mater.

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A solar-powered integrated supercapacitor (SPIS) with an inverted organic solar cell (iOSC) as the energy conversion unit and a supercapacitor (SC) as the energy-storage unit is a workable combination that yields a highly effective self-powered pack. However, the current designs of these elements are cumbersome and entail multistep fabricationtwo major application disadvantages. Herein, we report on a compact SPIS in series with a three-electrode configuration that uses modified graphene oxide-incorporated poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) as the common electrode, which is particularly important to integrate the iOSC with the SC and simultaneously play a role in the charge collection, transfer, and storage. The SPIS is successfully constructed through a solution process under mild conditions. Under 1-sun illumination, the iOSC features a weight-specific power density as high as 6.46 W g–1, enabling the SC to be fully charged by the iOSC within 33 s to create a fusion SPIS able to reach ∼0.6 V. The as-developed SPIS has a thickness of only ∼2.6 μm, and the substrate is a high-performance candidate for portable and wearable electronic devices in the future.

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Preparation of Coal-Based SiO2/GO-Loaded Ag Nanoparticle Composite Photocatalysts for Photocatalysis Nitrogen Fixation to Ammonia

et al. 2022

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Photocatalytic activities using a nanocomposite of mesoporous SiO2 and CdInSe-graphene nanoparticles under visible light irradiation

Cited by 7 publications

References 49 publications

Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination

Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination

Solar-Powered Supercapacitors Integrated with a Shared Electrode

Preparation of Coal-Based SiO2/GO-Loaded Ag Nanoparticle Composite Photocatalysts for Photocatalysis Nitrogen Fixation to Ammonia

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Photocatalytic activities using a nanocomposite of mesoporous SiO2 and CdInSe-graphene nanoparticles under visible light irradiation

Cited by 7 publications

References 49 publications

Comparison of the antimicrobial photocatalytic activities of SiO2 and Au@SiO2 nanostructures in water decontamination

Comparison of the antimicrobial photocatalytic activities of SiO2 and Au@SiO2 nanostructures in water decontamination

Solar-Powered Supercapacitors Integrated with a Shared Electrode

Preparation of Coal-Based SiO2/GO-Loaded Ag Nanoparticle Composite Photocatalysts for Photocatalysis Nitrogen Fixation to Ammonia

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Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination

Comparison of the antimicrobial photocatalytic activities of SiO₂ and Au@SiO₂ nanostructures in water decontamination