Preparation of core-shell Ag3PO4@GOQDs and degradation of ciprofloxacin under visible light

Yi Wang; Mengya Wu; Weiyan Lei; Yi Shen; Fengfeng Li

doi:10.1016/j.matlet.2021.131451

Preparation of core-shell Ag₃PO₄@GOQDs and degradation of ciprofloxacin under visible light

Yi Wang
, Mengya Wu
, Weiyan Lei
, Yi Shen^*
, Fengfeng Li

^*Corresponding author for this work

North China University of Science and Technology

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

To solve the problem of photocorrosion of Ag₃PO₄, a chemical deposition method was used to prepare a visible-light-active core-shell composite (Ag₃PO₄@GOQDs) photocatalyst containing silver phosphate (Ag₃PO₄), graphene oxide (GO), and graphene oxide quantum dots (GOQDs). The degradation efficiency of 2.5 wt% Ag₃PO₄@GOQDs for ciprofloxacin was 98.7% within 18 min through the synergistic effect of adsorption and photocatalysis. Even after 6 repeated cycles, Ag₃PO₄@GOQDs exhibited excellent stability. GOQDs improved the adsorption performance and promoted the transmission of photogenerated electrons, whereas the coating of Ag₃PO₄ slowed down the photocorrosion and enhanced the stability and photocatalytic activity of the interface. Free radical capture experiments confirmed that h⁺ and •O^2– were the main active species during the photocatalytic degradation of ciprofloxacin.

Original language	English
Article number	131451
Journal	Materials Letters
Volume	309
DOIs	https://doi.org/10.1016/j.matlet.2021.131451
Publication status	Published - 15 Feb 2022
Externally published	Yes

Keywords

AgPO
Composite materials
Core-shell nanoparticles
Graphene oxide quantum dots
Optical properties

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10.1016/j.matlet.2021.131451

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@article{7a7e35dc0d8f4a779b1d5917e63b102d,

title = "Preparation of core-shell Ag3PO4@GOQDs and degradation of ciprofloxacin under visible light",

abstract = "To solve the problem of photocorrosion of Ag3PO4, a chemical deposition method was used to prepare a visible-light-active core-shell composite (Ag3PO4@GOQDs) photocatalyst containing silver phosphate (Ag3PO4), graphene oxide (GO), and graphene oxide quantum dots (GOQDs). The degradation efficiency of 2.5 wt\% Ag3PO4@GOQDs for ciprofloxacin was 98.7\% within 18 min through the synergistic effect of adsorption and photocatalysis. Even after 6 repeated cycles, Ag3PO4@GOQDs exhibited excellent stability. GOQDs improved the adsorption performance and promoted the transmission of photogenerated electrons, whereas the coating of Ag3PO4 slowed down the photocorrosion and enhanced the stability and photocatalytic activity of the interface. Free radical capture experiments confirmed that h+ and •O2– were the main active species during the photocatalytic degradation of ciprofloxacin.",

keywords = "AgPO, Composite materials, Core-shell nanoparticles, Graphene oxide quantum dots, Optical properties",

author = "Yi Wang and Mengya Wu and Weiyan Lei and Yi Shen and Fengfeng Li",

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year = "2022",

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day = "15",

doi = "10.1016/j.matlet.2021.131451",

language = "English",

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journal = "Materials Letters",

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TY - JOUR

T1 - Preparation of core-shell Ag3PO4@GOQDs and degradation of ciprofloxacin under visible light

AU - Wang, Yi

AU - Wu, Mengya

AU - Lei, Weiyan

AU - Shen, Yi

AU - Li, Fengfeng

PY - 2022/2/15

Y1 - 2022/2/15

N2 - To solve the problem of photocorrosion of Ag3PO4, a chemical deposition method was used to prepare a visible-light-active core-shell composite (Ag3PO4@GOQDs) photocatalyst containing silver phosphate (Ag3PO4), graphene oxide (GO), and graphene oxide quantum dots (GOQDs). The degradation efficiency of 2.5 wt% Ag3PO4@GOQDs for ciprofloxacin was 98.7% within 18 min through the synergistic effect of adsorption and photocatalysis. Even after 6 repeated cycles, Ag3PO4@GOQDs exhibited excellent stability. GOQDs improved the adsorption performance and promoted the transmission of photogenerated electrons, whereas the coating of Ag3PO4 slowed down the photocorrosion and enhanced the stability and photocatalytic activity of the interface. Free radical capture experiments confirmed that h+ and •O2– were the main active species during the photocatalytic degradation of ciprofloxacin.

AB - To solve the problem of photocorrosion of Ag3PO4, a chemical deposition method was used to prepare a visible-light-active core-shell composite (Ag3PO4@GOQDs) photocatalyst containing silver phosphate (Ag3PO4), graphene oxide (GO), and graphene oxide quantum dots (GOQDs). The degradation efficiency of 2.5 wt% Ag3PO4@GOQDs for ciprofloxacin was 98.7% within 18 min through the synergistic effect of adsorption and photocatalysis. Even after 6 repeated cycles, Ag3PO4@GOQDs exhibited excellent stability. GOQDs improved the adsorption performance and promoted the transmission of photogenerated electrons, whereas the coating of Ag3PO4 slowed down the photocorrosion and enhanced the stability and photocatalytic activity of the interface. Free radical capture experiments confirmed that h+ and •O2– were the main active species during the photocatalytic degradation of ciprofloxacin.

KW - AgPO

KW - Composite materials

KW - Core-shell nanoparticles

KW - Graphene oxide quantum dots

KW - Optical properties

UR - https://www.scopus.com/pages/publications/85120859855

U2 - 10.1016/j.matlet.2021.131451

DO - 10.1016/j.matlet.2021.131451

M3 - Article

AN - SCOPUS:85120859855

SN - 0167-577X

VL - 309

JO - Materials Letters

JF - Materials Letters

M1 - 131451

ER -

Preparation of core-shell Ag₃PO₄@GOQDs and degradation of ciprofloxacin under visible light

Abstract

Keywords

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