Surfactant- and Ligand-Free Synthesis of Platinum Nanoparticles in Aqueous Solution for Catalytic Applications

Charde, Rashmi P.; Devener, Brian Van; Nigra, Michael M.

doi:10.3390/catal13020246

Cited by 4 publications

(1 citation statement)

References 58 publications

(85 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Detailed analysis of XRD and XPS data can be found in Electronic Supplementary Materials. Absorbance spectra of studied nanoparticles were similar to previously reported (Aljurays et al, 2023;Charde et al, 2023;Singh et al, 2011;Stein et al, 2020) (Fig. S8).…”

Section: Properties Of Nanozymessupporting

confidence: 88%

Enhancing Nanozyme-Based Colorimetric Assays by Optimizing Substrate Composition

Khramtsov,

Valeev,

Eremina

et al. 2024

Preprint

View full text Add to dashboard Cite

Nanozymes, while promising alternatives to natural peroxidases in colorimetric assays, are often hindered by lower catalytic efficiencies. While various strategies exist to enhance signal intensity in nanozyme-based assays, substrate optimization remains largely underexplored. The vast majority of studies rely on standard sodium acetate buffers or commercially-sourced substrates optimized for horseradish peroxidase, neglecting the unique catalytic properties of different nanozymes. This work presents a systematic optimization of 3,3',5,5'-tetramethylbenzidine (TMB)-based substrate compositions for four common nanozymes: iron oxide, LaNiO3, Mn-doped CeO2, and platinum nanoparticles. Our findings reveal that while sodium acetate buffer is suitable for LaNiO3, alternative buffers significantly enhance signal intensity (41-68%) for the other nanozymes. Further optimization of ionic strength, organic co-solvent type and concentration, and TMB/H2O2 concentrations yielded improvements in signal intensity, analytical sensitivity, and assay time. This study also identifies common pitfalls encountered during substrate optimization and proposes potential solutions. We posit that substrate composition should be a standard optimization step in the development of nanozyme-based assays, and the use of commercially-sourced substrates with undisclosed compositions should be avoided.

show abstract

Section: Properties Of Nanozymessupporting

confidence: 88%

Enhancing Nanozyme-Based Colorimetric Assays by Optimizing Substrate Composition

Khramtsov,

Valeev,

Eremina

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Greener Synthesis of Copper Oxide Nano‐Particles Using Rivina Humilis L. Plant Extract, Characterization and Their Biological Evaluation for Anti‐Microbial and Anti‐Oxidant Activity

Sheikh,

Mungole,

Pandhurnekar

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Synthesis of nano‐particles using various greener approaches such as the use of plant extract, microbes, etc. is gaining a lot of popularity in the scientific community due to their advantages of being a cheaper protocol, reduction in the use of less hazardous chemicals, more environmentally benign method and good yield. It has been previously reported by many research groups that plant material provides reducing, capping as well as stabilizing agents and brings down biological and environmental risks in the green synthesis of nano‐particles. So it was thought worthwhile to synthesize copper oxide nano‐particles (CuO NPs) using some locally available medicinal plants. Rivina humilis L. plants which are available in our region of Vidarbha in Maharashtra State, India are considered to be the herbal plant for the treatment of respiratory‐related disorders mainly for asthma and cold by local tribal peoples. It has been found that it contains a variety of phytochemicals which can be employed for the synthesis of nanomaterials. With this aim it was thought worthwhile to present an efficient and greener approach for the synthesis of copper oxide nano‐particles using Rivina humilis L. (RH) whole plant extract. For characterization of bio‐synthesized CuO NPs, various spectral and analytical techniques such as UV‐Vis spectroscopy, FT‐IR, XRD, SEM, TEM, and EDS were employed. The newly synthesized CuO NPs were also tested for their potential biological activities against six different bacterial stains namely E. coli, P. aeruginosa, S. aureus, P. vulgaris, B. subtilis, and S. typhi using the well diffusion method. The antioxidant efficacy of the synthesized CuO NPs was undertaken through 1,1‐Diphenyl‐2‐picrylhydrazyl (DPPH) free radical scavenging activity. Their results have been presented and discussed in the present work.

show abstract

A Review of Bimetallic and Monometallic Nanoparticle Synthesis via Laser Ablation in Liquid

2023

View full text Add to dashboard Cite

Pulsed laser ablation in liquid (PLAL) is a physical and top-down approach used to fabricate nanoparticles (NPs). Herein, the research methods and current trends in PLAL literature are reviewed, including the recent uses of PLAL for fabricating bimetallic nanoparticles (BNPs) and composites. BNPs have gained attention owing to their advanced physicochemical properties over monometallic NPs. PLAL involves the irradiation of a solid target (usually a rod, plate, or thin film) under a liquid medium. The liquid collects the ejected NPs resulting from the laser processing, which produces a colloid that can be in various applications, including plasmon sensing, energy harvesting, and drug delivery. The most used fabrication techniques, including the use of microorganisms, do not have precise NP size control and require the separation of the microorganisms from the produced NPs. PLAL is quicker at producing NPs than bottom-up methods. The drawbacks of PLAL include the need to find the required laser processing parameters, which requires extensive experimentation, and the complex and non-linear relationships between the inputs and the outputs (e.g., NP size).

show abstract

Surfactant- and Ligand-Free Synthesis of Platinum Nanoparticles in Aqueous Solution for Catalytic Applications

Cited by 4 publications

References 58 publications

Enhancing Nanozyme-Based Colorimetric Assays by Optimizing Substrate Composition

Enhancing Nanozyme-Based Colorimetric Assays by Optimizing Substrate Composition

Greener Synthesis of Copper Oxide Nano‐Particles Using Rivina Humilis L. Plant Extract, Characterization and Their Biological Evaluation for Anti‐Microbial and Anti‐Oxidant Activity

A Review of Bimetallic and Monometallic Nanoparticle Synthesis via Laser Ablation in Liquid

Contact Info

Product

Resources

About