Self-supported Ag/AgCl nanoparticles incorporated polymeric multilayer films for reusable electrophotocatalyst

Shah, Md. Selim Arif Sher; Kim, Young Hun; Park, A. Reum; Rauf, Ali; Yoo, Pil J.

doi:10.1166/mex.2015.1258

Cited by 7 publications

(4 citation statements)

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“…Silver halides (AgX, X=Cl, Br, I) are highly photosensitive semiconductors and widely used in various applications such as photographic materials [1,2], photocatalyst [3][4][5][6][7], superionic conductor in the case of AgI [8], etc. Among the different silver halides, AgCl is thermally the most stable, it retains its structure up to the melting temperature 455 °C and decomposes only above 870 ° C, whereas AgBr decomposes at 700°C and AgI at 552 °C [9,10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Nehal

Bouzidi

Nakrela

et al. 2020

Optik

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Nehal

Bouzidi

Nakrela

et al. 2020

Optik

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“…In photocatalytic applications, degradation of organic compounds and dyes has been the focus of significant research efforts, including works by our group. − Likewise, photocatalytic applications targeting on the removal of heavy metal ions (Cr(VI), Ni(II), Fe(III), Hg(II)) represent a promising area of research. Among these heavy metal ions, hexavalent chromium is highly carcinogenic and poses serious environmental concerns.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23][24] Likewise, photocatalytic applications targeting on the removal of heavy metal ions (Cr(VI), Ni(II), Fe(III), Hg(II)) represent a promising area of research. Among these heavy metal ions, hexavalent chromium is highly carcinogenic and poses serious environmental concerns.…”

mentioning

confidence: 99%

Facile Synthesis of Hierarchically Structured Bi₂S₃/Bi₂WO₆ Photocatalysts for Highly Efficient Reduction of Cr(VI)

Rauf

Shah

Choi

et al. 2015

ACS Sustainable Chem. Eng.

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148

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Varied morphologies and compositions of bismuth tungstate nanocomposites have been investigated as promising materials for photocatalytic applications. Among these nanocomposites, hierarchically structured bismuth sulphide (Bi 2 S 3 )/bismuth tungstate (Bi 2 WO 6 ) hybrids have significant photocatalytic efficiency toward heavy metal ions. In order to simplify the synthetic procedure for this desirable composite, we developed a robust single-step hydrothermal synthesis for the formation of hierarchically structured hetero-catalysts of Bi 2 S 3 /Bi 2 WO 6 with a high yield (>95%). The synthesized heterostructures were characterized by various spectroscopic, microscopic, and surface area analysis techniques, which confirmed the successful incorporation of Bi 2 S 3 into the Bi 2 WO 6 matrix and were used to optimize pore size for enhanced catalytic activity. The resulting Bi 2 S 3 /Bi 2 WO 6 heterocatalysts were used to remove toxic Cr(VI) ions via reduction to water insoluble Cr(III) utilizing visible-light irradiation. We also investigated the role of citric acid as a hole scavenger in the reduction of Cr(VI) with minimizing the rate of electron-hole recombination during photocatalysis. Likewise, the observed catalytic activity was significantly enhanced under a condition of an appropriate balance between hierarchical structure of catalysts and the amount of hole scavenger. ASSOCIATED CONTENT Supporting informationAdditional information about FESEM images of Bi 2 WO 6 synthesized under different conditions, comparative XPS of Bi 4f and W 4f, BET surface area and BJH pore size distribution, digital photograph of Cr(VI) reduction to Cr(III) along with effect of CA on Cr(VI) reduction in dark, energy level diagram of composite. This material is available free of charge via internet at

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“…The peaks of Ag 3d 5/2 are at 367.2 and 368.7 eV, and the peaks of Ag 3d 3/2 are at 373.2 and 374.9 eV. The two peaks at 367.2 and 373.2 eV can be attributed to the Ag + oxidation state, and the peaks at 368.7 and 374.9 eV belong to the Ag 0 oxidation state. − The higher area in Ag + indicates that the majority of the Ag is in the form of AgCl. The presence of Ag 0 points to the formation of a trace amount of metallic Ag during the synthesis.…”

Section: Resultsmentioning

confidence: 98%

Synergistic Effect of Oxygen Vacancy-Rich SnO₂ and AgCl in the Augmentation of Sustained Oxygen Reduction Reaction

2023

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Developing a stable and methanol-tolerant electrocatalyst for a sustained oxygen reduction reaction (ORR) is of great importance for advancing direct methanol fuel cell applications. The silver-based electrocatalysts are particularly interesting among the promising non-Pt-based electrocatalysts for ORR. Herein, we report a single-step synthesis of a composite of AgCl and SnO2 with oxygen vacancy (AgCl–SnO2(VO)), which exhibits sustained and selective catalytic activity for the ORR along with excellent durability. Hydrothermal synthesis generates oxygen vacancies within the material and facilitates a strong interaction between AgCl and SnO2(VO), which effectively augments the ORR activity and the long-term stability of the composite. The composite exhibits remarkable methanol tolerance, as evidenced by a meager shift of only 0.002 V in the half-wave potential. Furthermore, the composite demonstrates excellent durability, with no noticeable changes in onset and half-wave potential even after 2500 cycles. The cost-effectiveness, durability, and ORR selectivity of this composite hold great promise toward contributing to the advancement of clean energy technology.

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Self-supported Ag/AgCl nanoparticles incorporated polymeric multilayer films for reusable electrophotocatalyst

Cited by 7 publications

References 0 publications

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Facile Synthesis of Hierarchically Structured Bi₂S₃/Bi₂WO₆ Photocatalysts for Highly Efficient Reduction of Cr(VI)

Synergistic Effect of Oxygen Vacancy-Rich SnO₂ and AgCl in the Augmentation of Sustained Oxygen Reduction Reaction

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Self-supported Ag/AgCl nanoparticles incorporated polymeric multilayer films for reusable electrophotocatalyst

Cited by 7 publications

References 0 publications

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Synthesis and characterization of antireflective Ag@AgCl nanocomposite thin films

Facile Synthesis of Hierarchically Structured Bi2S3/Bi2WO6 Photocatalysts for Highly Efficient Reduction of Cr(VI)

Synergistic Effect of Oxygen Vacancy-Rich SnO2 and AgCl in the Augmentation of Sustained Oxygen Reduction Reaction

Contact Info

Product

Resources

About

Facile Synthesis of Hierarchically Structured Bi₂S₃/Bi₂WO₆ Photocatalysts for Highly Efficient Reduction of Cr(VI)

Synergistic Effect of Oxygen Vacancy-Rich SnO₂ and AgCl in the Augmentation of Sustained Oxygen Reduction Reaction