Synthesis and Characterization of ZnO Doped with Gold Nanoparticles for Improved Photocatalytic Activity

Yu, Juyoung; Kim, Jongsung

doi:10.1166/sam.2021.3980

Cited by 4 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the same time (100 min), nanocomposite caused maximum degradation of 90.3 ± 0.28 and 91.8 ± 0.27% for RR195 and RB, respectively. RB dye was degraded (78.6%) dye under solar light using ZnO doped Au NPs, this photocatalytic activity according to Yu and Kim (2021) perhaps due to the effect of the increment surface of Au NPs plasmon resonance. Au-metal oxide nanocomposites are characterized by a high surface-area-to-volume ratio besides their high stability when used as catalysts (Kauffman et al 2019).…”

Section: Resultsmentioning

confidence: 91%

Green biosynthesis of bimetallic ZnO@AuNPs with its formulation into cellulose derivative: biological and environmental applications

Al Abboud,

Mashraqi,

Qanash

et al. 2024

Bioresour. Bioprocess.

View full text Add to dashboard Cite

Nanoparticles (NPs) formulation in biopolymers is an attractive process for the researcher to decrease the disadvantages of NPs application alone. Bimetallic NPs are a promising formula of two NPs that usually act as synergetic phenomena. Zinc oxide and gold NPs (ZnO@AuNPs) biosynthesis as a bimetallic was prepared via the eco-friendly manner currently. Carboxymethylcellulose (CMC) was employed for the formulation of ZnO@AuNPs as a nanocomposite via a green method. Physicochemical and topographical characterization was assigned to ZnO@AuNPs and nanocomposite features. The nanostructure of bimetallic NPs and nanocomposite were affirmed with sizes around 15 and 25 nm, respectively. Indeed, the DLS measurements affirmed the more reasonable size and stability of the prepared samples as 27 and 93 nm for bimetallic NPs and nanocomposite, respectively. The inhibitory potential of nanocomposite was more than ZnO@AuNPs against Staphylococcus aureus, Escherichia coli, Salmonella typhi, Enterococcus faecalis, Mucor albicans, Aspergillus flavus, and Mucor circinelloid. ZnO@AuNPs and nanocomposite exhibited antioxidant activity via DPPH with IC50 of 71.38 and 32.4 µg/mL, correspondingly. Excellent anti-diabetic potential of nanocomposite with IC50 of 7.4 µg/mL, and ZnO@AuNPs with IC50 of 9.7 µg/mL was reported compared with the standard acarbose with the IC50 of 50.93 µg/mL for amylase inhibition (%). Photocatalytic degradation of RR195 and RB dyes was performed by ZnO@AuNPs and nanocomposite, where maximum degradation was 85.7 ± 1.53 and 88.7 ± 0.58%, respectively using ZnO@AuNPs, 90.3 ± 0.28 and 91.8 ± 0.27%, respectively using nanocomposite at 100 min. Graphical Abstract

show abstract

Section: Resultsmentioning

confidence: 91%

Green biosynthesis of bimetallic ZnO@AuNPs with its formulation into cellulose derivative: biological and environmental applications

Al Abboud,

Mashraqi,

Qanash

et al. 2024

Bioresour. Bioprocess.

View full text Add to dashboard Cite

show abstract

“…Among the different approaches, strategies based on the use of heterojunctions with 0D/2D or 2D/0D/2D dimensions are typically considered to be efficient methods for improving the performance of photocatalysts because they allow the uniform dispersion of 0D nanoscale particles on 2D materials [16][17][18][19][20][21][22][23][24][25][26][27]. Furthermore, the close contact between components of a 0D/2D composite accelerates charge transfer through the heterojunction interface and creates fast-moving channels from the interface to photoactive surface sites [28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of TiO2 Quantum Dots-Anchored g-C3N4 Nanosheets as 0D/2D Heterojunction Nanocomposite for Accelerating Solar-Driven Photocatalysis

et al. 2023

View full text Add to dashboard Cite

TiO₂ semiconductors exhibit a low catalytic activity level under visible light because of their large band gap and fast recombination of electron–hole pairs. This paper reports the simple fabrication of a 0D/2D heterojunction photocatalyst by anchoring TiO₂ quantum dots (QDs) on graphite-like C₃N₄ (g-C₃N₄) nanosheets (NSs); the photocatalyst is denoted as TiO₂ QDs@g-C₃N₄. The nanocomposite was characterized via analytical instruments, such as powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, t orange (MO) under solar light were compared. The TiO₂ QDs@g-C₃N₄ photocatalyst exhibited 95.57% MO degradation efficiency and ~3.3-fold and 5.7-fold higher activity level than those of TiO₂ QDs and g-C₃N₄ NSs, respectively. Zero-dimensional/two-dimensional heterojunction formation with a staggered electronic structure leads to the efficient separation of photogenerated charge carriers via a Z-scheme pathway, which significantly accelerates photocatalysis under solar light. This study provides a facile synthetic method for the rational design of 0D/2D heterojunction nanocomposites with enhanced solar-driven catalytic activity.

show abstract

“…Commonly, many wide bandgap semiconductors have been used as photoanodes for DSSC devices, such as zinc oxide (ZnO), niobium pentoxide (Nb 2 O 5 ), tin dioxide (SnO 2 ), and titanium dioxide (TiO 2 ) nanoparticles [5][6][7][8][9][10][11][12][13]. Among these semiconducting nanomaterials, ZnO is considered as an efficient photoanode because of its high ability to endure constant electron transfer under sun light irradiation in the visible to ultraviolet range [5][6][7][8]. ZnO shows high mobility of the order of 100 cm 2 /V s and is considered a potential substitute for the TiO 2 due to their similar band gaps and electron affinities [8][9][10][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhancement in the Performance of Dye Sensitized Solar Cells (DSSCs) by Incorporation of Reduced Graphene Oxide (RGO) and Carbon Nanotubes (CNTs) in ZnO Nanostructures

et al. 2022

View full text Add to dashboard Cite

In this work, a fast, environment-friendly and economic route was used to prepare ZnO and their nanocomposites containing reduced graphene oxide (RGO) and carbon nanotubes (CNTs) for the fabrication of dye-sensitized solar cells (DSSCs). The prepared nanostructures were well-characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Raman measurements. The XRD, Raman and TEM results confirmed that the ZnO nanostructures were crystallized into the hexagonal phase, and the nanocomposites containing RGO and CNTs. Morphological studies performed by using FESEM and TEM images showed that the ZnO possessed tube-like morphology with length and diameter in the range of ~1 micron and 90–200 nm, respectively, which were uniform and densely covered on the surface of the carbon materials. The DSSCs were fabricated using prepared nanostructures as a working electrode and platinum as a counter electrode with ruthenium-based dyes and iodide electrolytes. To further improve the efficiency of fabricated solar cells, nanocomposites of prepared nanostructures of ZnO with RGO and CNTs were synthesized, and their results were compared with the pristine samples. The results showed that the ZnO/CNTs (0.5 wt%) nanocomposites electrode exhibited the highest power conversion efficiency (PCE) of DSSCs with a maximum value of 0.612% compared to 0.326% of DSSC with pure ZnO, and 0.574% of DSSC with ZnO/RGO. Significantly, this technique could be used for large-scale production using the existing economical and highly effective DSSC fabrication technique.

show abstract

Synthesis and Characterization of ZnO Doped with Gold Nanoparticles for Improved Photocatalytic Activity

Cited by 4 publications

References 15 publications

Green biosynthesis of bimetallic ZnO@AuNPs with its formulation into cellulose derivative: biological and environmental applications

Green biosynthesis of bimetallic ZnO@AuNPs with its formulation into cellulose derivative: biological and environmental applications

Facile Fabrication of TiO2 Quantum Dots-Anchored g-C3N4 Nanosheets as 0D/2D Heterojunction Nanocomposite for Accelerating Solar-Driven Photocatalysis

Enhancement in the Performance of Dye Sensitized Solar Cells (DSSCs) by Incorporation of Reduced Graphene Oxide (RGO) and Carbon Nanotubes (CNTs) in ZnO Nanostructures

Contact Info

Product

Resources

About