Sulfur adlayer on gold surface for attaining H2O2 reduction in alkaline medium: Catalysis, kinetics, and sensing activities

Ahsan, Mohebul; Dutta, Anim; Akermi, Mehdi; Alam, Mohammad Mahtab; Uddin, Sarir; Khatun, Nazia; Hasnat, Mohammad A.

doi:10.1016/j.jelechem.2023.117281

Cited by 5 publications

(4 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We also achieved spontaneous immobilization of sulfur atom nanoparticles monolayer on the same polycrystalline gold electrode. When the electrode is immersed in sodium sulfide solution, sulfur atoms self-assemble on the electrode surface via chemisorption mechanism [5]. Here, sulfur atoms receive charge from gold surface owing to their high polarizable character and induces positive charge on the gold electrode.…”

Section: Opinionmentioning

confidence: 99%

Spontaneous Growth of Nanoparticles for Utilization in Sensing Platforms

Hasnat¹

2023

J Miner Sci Materials

View full text Add to dashboard Cite

Section: Opinionmentioning

confidence: 99%

Spontaneous Growth of Nanoparticles for Utilization in Sensing Platforms

Hasnat¹

2023

J Miner Sci Materials

View full text Add to dashboard Cite

“…Techniques for detecting H 2 O 2 include colorimetry [19,20], spectrometry [21], chemiluminescence [22,23], titrimetry [24], spectrophotometry [25], fluorimetry [26][27][28][29][30][31][32], the use of fiberoptic devices [33] and chromatography [34], but most of these are time-consuming, use expensive reagents and suffer with interference from various species. As such, the use of electrochemical methods such as voltammetry and amperometry presents advantages, such as low detection limits and a rapid response time [35][36][37][38][39][40][41][42][43][44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Low-Cost Carbon Paste Cu(II)-Exchanged Zeolite Amperometric Sensor for Hydrogen Peroxide Detection

Gligor,

Maicaneanu,

Varodi

2024

Chemosensors

View full text Add to dashboard Cite

The aim of this work was to explore the possibility of using a Cu-exchanged zeolitic volcanic tuff (which is natural and easy to prepare and apply) for the preparation of a new low-cost carbon paste amperometric sensor for H2O2 detection. The properties of the zeolitic volcanic tuff were determined using chemical analysis, energy-dispersive X-ray spectroscopy, the specific surface area, electron microscopy, X-ray diffraction spectroscopy, and Fourier-transform infrared spectroscopy. The sensor was successfully built and operates at pH 7, at an applied potential of −150 mV Ag/AgCl/KClsat, presenting a sensitivity of 0.87 mA M−1, a detection limit of 10 µM and a linear domain up to 30 mM H2O2. These good electroanalytic parameters for H2O2 detection (a low detection limit and high sensitivity) support the possibility of using these sensors for the detection of many analytes in environmental, food and medical applications.

show abstract

“…Sulfide (S 2À ), like other anions (such as iodide and bromide), forms a compact and extremely stable adsorption layer of S on gold electrodes. [47][48][49][50][51] The AuÀ S bond may exist in a wide range of chemisorbed geometries and coordination, and it can even function through considerably weaker physiosorbed associates. [52] The fabrication of an S-adlayer on the surface of AuNPs/GCE was demonstrated in this research.…”

Section: Introductionmentioning

confidence: 99%

“…But a compact adsorption layer of stronger adsorbents onto AuNPs, may be an effective technique for blocking HP adsorption on the surface of the AuNPs and its decomposition products, resulting in an increase in electrode performance for HP reduction. Sulfide (S 2− ), like other anions (such as iodide and bromide), forms a compact and extremely stable adsorption layer of S on gold electrodes [47–51] . The Au−S bond may exist in a wide range of chemisorbed geometries and coordination, and it can even function through considerably weaker physiosorbed associates [52] …”

Section: Introductionmentioning

confidence: 99%

Electroless Deposition of Gold on a Glassy Carbon Electrode (GCE) Surface for Selective Detection of Hydrogen Peroxide

Imran Hossain,

Dutta,

Ahmed

et al. 2024

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

Electroless deposition technique was employed to coat the surface of a glassy carbon electrode (GCE) with nanoparticles of gold (AuNPs). Afterward, sulfur (S) components were immobilized onto this AuNPs/GC electrode via an in‐situ chemisorption approach that considerably enhanced the catalytic activity, conductivity, and persistent durability of the electrode. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X‐ray photoelectron spectroscopy (XPS) were used to characterize the modified electrode surface. The experimental results indicated that the S−AuNPs/GC electrode exhibits outstanding catalytic activity for the selective detection of H2O2 (HP). SWV measurements showed that the electrochemical sensor has a wide linear range of 10 to 2500 μM and a heightened sensitivity of 50.08 μA mM−1 cm−2. The proposed HP sensor demonstrated adequate repeatability and durability, as well as interference‐free quantitative analysis capability.

show abstract

Sulfur adlayer on gold surface for attaining H2O2 reduction in alkaline medium: Catalysis, kinetics, and sensing activities

Cited by 5 publications

References 57 publications

Spontaneous Growth of Nanoparticles for Utilization in Sensing Platforms

Spontaneous Growth of Nanoparticles for Utilization in Sensing Platforms

Low-Cost Carbon Paste Cu(II)-Exchanged Zeolite Amperometric Sensor for Hydrogen Peroxide Detection

Electroless Deposition of Gold on a Glassy Carbon Electrode (GCE) Surface for Selective Detection of Hydrogen Peroxide

Contact Info

Product

Resources

About