Silver halide-induced catalyst poisoning of Ag-M bimetallic nanoparticles (biNPs) and their chemical regeneration

Ryu, Han-Jung; Lee, Won Kyu; Choi, Jong Yun; Lee, Jae Seung

doi:10.1016/j.jallcom.2021.163260

Cited by 4 publications

(2 citation statements)

References 44 publications

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“…Additionally, the Cl – ligands are released in the aqueous reaction media through ligand exchange with hydroxide ions, which is uncontrollable during the synthesis . The released Cl – ions can form undesirable byproducts that significantly degrade the purity of resultant nanomaterials and disturb the application of synthesized nanomaterials by blocking their surfaces . Cl – ions also reverse the electrostatic charge of Au 3+ ions from positive to negative, thereby limiting the electrostatic interaction-based utilization of Au 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

“… 17 The released Cl – ions can form undesirable byproducts that significantly degrade the purity of resultant nanomaterials and disturb the application of synthesized nanomaterials by blocking their surfaces. 18 Cl – ions also reverse the electrostatic charge of Au 3+ ions from positive to negative, thereby limiting the electrostatic interaction-based utilization of Au 3+ ions. As an alternative, the halogen-free positive Au precursor, Au(NH 3 ) 4 (NO 3 ) 3 , was recently adopted for the synthesis of Au-DNA nanoparticles based on their electrostatic interactions.…”

Section: Introductionmentioning

confidence: 99%

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Unveiling the Role of Precursors in the Byproduct Formation of AgCl-Replicated Bimetallic Nanostructures and Their Stability-Dependent Photothermal Properties

et al. 2023

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AgCl nanomaterials recently attracted scientific interest as useful structural building blocks for producing metallic nanomaterials owing to their facile synthesis, controllable morphology, and ease of removal under ambient conditions. However, their complex chemical reactivity has primarily been studied in association with water solubility or reducibility. This study investigates the pivotal role of precursor ligands in the photochemical synthesis of metallic cubic mesh nanostructures on the AgCl templates. The side reactions between AgCl and Au precursors with different ligands are thoroughly discussed along with their influence on the byproduct formation and the structural stability of the resulting metallic nanostructures. Importantly, we introduce for the first time the partial destruction of AgCl and the formation of undesirable byproducts caused by the presence of highly oxidizing and Cl-containing AuCl 4 − . In addition, a synthetic route for producing highly pure and stable metallic nanostructures using a halogen-free Au precursor or Pt-priming is proposed. Further, the photothermal properties of these replicated metallic nanostructures are presented as a new evaluation tool for analyzing their overall structural stability. Discovering the role of precursor ligands in the reaction system will prove useful as a guide for the synthesis of functional noble metal nanomaterials using silver halide templates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unveiling the Role of Precursors in the Byproduct Formation of AgCl-Replicated Bimetallic Nanostructures and Their Stability-Dependent Photothermal Properties

et al. 2023

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Preparation of high purity ruthenium nitrosyl nitrate from spent Ru-Zn/ZrO2 catalyst

Liu,

Qiu,

2024

J. Cent. South Univ.

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Facile Preparation of Silver Halide Nanoparticles for Biological Application and Waste Water Treatment

Moustafa,

Razek,

Omran

et al. 2023

ANP

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Highly efficient silver halide nanoparticles (AgX, X = Cl, Br NP's) were successfully synthesized by facile and template-free direct-precipitation method using potassium chloride, potassium bromide and silver nitrate as reactive sources. The as-prepared AgX NP's were characterized by FTIR, thermogravimetric analysis, XRD, EDX and HRTEM. The antimicrobial susceptibilities against two Gram-positive bacteria (Bacillus cereus, Staphylococcus aureus) and four Gram-negative bacteria (Salmonella typhi, Escherichia coli, P. aeruginosa and Klebsiella pneumoniae) in addition to five fungi (Aspergillus flavus, A. carbonarus, Penicillium verrucosum, Fusarium verticelloides and A. niger) were tested by the disk diffusion technique. The antibacterial and antifungal results suggest that the prepared AgX NP's show high activity against the tested organisms compared to tetracycline and Nystatin taken as standard drugs. As an application, the use of the prepared AgX NP's as photo catalyst for the decontamination of malathion as VX chemical warfare agent (CWA) stimulant from water sample was extensively studied.

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Silver halide-induced catalyst poisoning of Ag-M bimetallic nanoparticles (biNPs) and their chemical regeneration

Cited by 4 publications

References 44 publications

Unveiling the Role of Precursors in the Byproduct Formation of AgCl-Replicated Bimetallic Nanostructures and Their Stability-Dependent Photothermal Properties

Unveiling the Role of Precursors in the Byproduct Formation of AgCl-Replicated Bimetallic Nanostructures and Their Stability-Dependent Photothermal Properties

Preparation of high purity ruthenium nitrosyl nitrate from spent Ru-Zn/ZrO2 catalyst

Facile Preparation of Silver Halide Nanoparticles for Biological Application and Waste Water Treatment

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