Antioxidant Activity of Gold Nanofilms Synthesized via Cyclic Voltammetry Technique DOI Open Access
Babay Asih Suliasih,

Dwi Giwang Kurniawan,

Marissa Angelina

et al.

Journal of Physics Conference Series, Journal Year: 2024, Volume and Issue: 2866(1), P. 012009 - 012009

Published: Oct. 1, 2024

Abstract Gold nanoparticles (AuNPs) have attracted much attention as one of the most effective agents with high catalytic activities for radical scavenging reactions. Many studies investigated its antioxidant activity using various in vitro methods and shown promising action. In this research, we demonstrated synthesis Au nanofilms (AuNFs) by cyclic voltammetry technique evaluated their activity. The application a range voltage levels was utilized AuNFs, potential subsequently assessed through 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. All AuNFs exhibited which increased upper reduced from 1,5 V to 0,75 V. increase gradually longer incubation times before DPPH assay, indicating significant impact on performance. obtained inhibition percentage ranging 8,26% 22,91%. highest could be achieved synthesizing 0,75V incubating it 90 minutes prior variations applied influenced morphological characteristics leading surface area, while duration found enhance efficacy reaction between DPPH. conclusion, successfully synthesize

Language: Английский

Square Wave Pulse Deposition of Gold Nanoparticles for Ethanol EOR Performance and Its Electrochemical Properties Investigation DOI Creative Commons

Amir Mahmud,

Bimo Tri Goutomo

Chemistry and Materials, Journal Year: 2024, Volume and Issue: 3(2), P. 45 - 49

Published: June 30, 2024

In this study, gold nanoparticles (Au NPs) were successfully synthesized using square wave pulse deposition. The synthesis process involved applying a lower potential of -0.1 V and an upper 0 for 25 minutes. Characterization the Au NPs was conducted X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive (EDX) spectroscopy, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV). XRD analysis confirmed formation phase on FTO substrate. SEM images revealed nanopyramid-like morphology, with average particle size ranging from 20 to 200 nm. EIS measurements indicated low resistance values NPs. During CV test ethanol electrooxidation, stable electric current 4.28 mA/cm² achieved, demonstrating good stability in process.

Language: Английский

Citations

2
Efficient stabilizing agent-free synthesis of gold nanoparticles via square-wave pulse deposition for enhanced catalytic performance in ethanol electrooxidation DOI Creative Commons
Setia Budi,

Aulia Siti Pathoni,

Annisa Auliya

et al.

Materials Reports Energy, Journal Year: 2024, Volume and Issue: unknown, P. 100294 - 100294

Published: Oct. 1, 2024

Language: Английский

Citations

1
Identifying Reactive Trends in Glycerol Electro-Oxidation Using an Automated Screening Approach: 28 Ways to Electrodeposit an Au Electrocatalyst DOI Creative Commons
Raghuram Gaddam, Zirui Wang,

Yichen Li

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 15(2), P. 639 - 652

Published: Dec. 23, 2024

Automated, rapid electrocatalyst discovery techniques that comprehensively address the exploration of chemical spaces, characterization catalyst robustness, reproducibility, and translation results to (flow) electrolysis operation are needed. Responding growing interest in biomass valorization, we studied glycerol electro-oxidation reaction (GEOR) on gold alkaline media as a model demonstrate efficacy such methodology introduced here. Our platform combines individually addressable electrode arrays with HardPotato, Python application programming interface for potentiostat control, automate electrochemical experiments data analysis operations. We systematically investigated effects reduction potential (E l) pulse width (PW) GEOR activity during electrodeposition (Edep) gold, evaluating 28 different conditions triplicate measurements great versatility. findings reveal direct correlation between E l activity. Upon CV cycling, recorded 52% increase peak current density -0.25 V shift varied from -0.2 -1.4 V. also identified an optimal PW ∼1.0 s, yielding maximum catalytic performance. The swift enabled by our allowed us correlate performance enhancements increased surface area preferential deposition Au(110) Au(111) sites, even disparate Edep conditions. validate scaling process larger electrodes correlating intrinsic product speciation via flow measurements. highlights opportunities automation pressing needs toward industrial decarbonization, valorization.

Language: Английский

Citations

1
Antioxidant Activity of Gold Nanofilms Synthesized via Cyclic Voltammetry Technique DOI Open Access
Babay Asih Suliasih,

Dwi Giwang Kurniawan,

Marissa Angelina

et al.

Journal of Physics Conference Series, Journal Year: 2024, Volume and Issue: 2866(1), P. 012009 - 012009

Published: Oct. 1, 2024

Abstract Gold nanoparticles (AuNPs) have attracted much attention as one of the most effective agents with high catalytic activities for radical scavenging reactions. Many studies investigated its antioxidant activity using various in vitro methods and shown promising action. In this research, we demonstrated synthesis Au nanofilms (AuNFs) by cyclic voltammetry technique evaluated their activity. The application a range voltage levels was utilized AuNFs, potential subsequently assessed through 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. All AuNFs exhibited which increased upper reduced from 1,5 V to 0,75 V. increase gradually longer incubation times before DPPH assay, indicating significant impact on performance. obtained inhibition percentage ranging 8,26% 22,91%. highest could be achieved synthesizing 0,75V incubating it 90 minutes prior variations applied influenced morphological characteristics leading surface area, while duration found enhance efficacy reaction between DPPH. conclusion, successfully synthesize

Language: Английский

Citations

0