Mechanism insight into rapid photocatalytic disinfection of Salmonella based on vanadate QDs-interspersed g-C3N4 heterostructures

Wang, Rong; Kong, Xiangyu; Zhang, Wentao; Zhu, Wenxin; Huang, Lunjie; Wang, Jing; Zhang, Xu; Liu, Xinnan; Hu, Na; Suo, Yourui; Wang, Jianlong

doi:10.1016/j.apcatb.2017.11.060

Cited by 182 publications

(64 citation statements)

References 53 publications

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“…[ 26 ] Importantly, the photocatalytic strategy can eliminate the carcinogenic byproducts of traditional antimicrobial means, and has been identified as one of the most sustainable, convenient environmental operations, and cost‐effective antibacterial methods. [ 27 ] Yet the photocatalytic performance of BPNs is mainly constrained from their fast photoinduced electron–hole recombination, and is partially impaired by their weak and narrow photoabsorptions. These limitations could be facilely solved by doping BPNs with metallic nanostructures, which can suppress the recombination of free charges via the accelerated separation and transportation of photogenerated electrons–holes.…”

Section: Introductionmentioning

confidence: 99%

Silver‐Laden Black Phosphorus Nanosheets for an Efficient In Vivo Antimicrobial Application

Liang

Zhang

et al. 2020

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Nanobactericides represent one of the most efficient and promising strategies for eliminating bacterial infection considering the increasing resistance threats of conventional antibiotics. Black phosphorus (BP) is the most exciting postgraphene layered 2D nanomaterial with convincing physiochemical properties, yet the study of BP‐based antibiotics is still in its infancy. Here, a compact silver nanoparticle (AgNP)–doped black phosphorus nanosheet (BPN) is constructed to synergistically enhance solar disinfection through the promoted reactive oxygen species (ROS) photogeneration, which is attributed to the improved electron–hole separation and recombination of BPNs as revealed from the systematic experimental studies. An in‐depth density functional theory (DFT) calculation confirms that the integrated AgNPs provide a preferred site for facilitating the adsorption and activation of O2, thus promoting the more efficient and robust ROS generation on BPN–AgNP nanohybrids. Besides the enhanced photoinduced ROS, the anchored AgNPs simultaneously lead to a dramatically increased affinity toward bacteria, which facilitates a synergetic pathogen inactivation. Significantly, the convincing antimicrobial BPN–AgNP contributes to the prominent wound healing and antimicrobial ability in vivo with minimized biological burden. This sophisticated design of new 2D nanohybrids opens a new avenue for further exploiting BP‐based nanohybrids in portable bandage and broad‐spectrum disinfection applications.

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Section: Introductionmentioning

confidence: 99%

Silver‐Laden Black Phosphorus Nanosheets for an Efficient In Vivo Antimicrobial Application

Liang

Zhang

et al. 2020

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“…Vanadate quantum dots (QDs) (AgVO 3 and BiVO 3 , separately) were also embedded into the tri-triazine units of g-C 3 N 4 by a sonication-assisted solvothermal method. 92 The bactericidal efficiency of AgVO 3 QDs-g-C 3 N 4 was as high as 96.4% in only 10 min towards Gram-negative Salmonella. The structure of the AgVO 3 QDs-g-C 3 N 4 remained unchanged after repetitive reactions although it suffered from a decreased efficiency due to mass loss during recycling.…”

Section: Graphitic Carbon Nitride (G-c 3 N 4 )-Based Photocatalysts Fmentioning

confidence: 94%

“…132 It is worth noting that photocatalytic reduction by photo-induced electrons is a vital disinfection pathway in many examples, particularly under anaerobic conditions. 87,92 In contrast, Liang et al 105 found a negligible effect of e − and h + in an anaerobic solution, which suggested e − could only disinfect cells via reacting with oxygen. The contradictory results might be attributed to insufficient attachment of bacterial walls to some nanomaterials 128 since both e − and h + could only stay on the surface of photocatalysts.…”

Section: Generation and Roles Of Rssmentioning

confidence: 98%

“…The g‐C 3 N 4 nanosheets wrapped spherical TiO 2 showed an efficient decomposition of bacteria, in which 10 7 CFU mL ‐1 of E. coli was removed entirely within 180 min under visible light, compared with the negligible decomposition by pure TiO 2 and g‐C 3 N 4 . Vanadate quantum dots (QDs) (AgVO 3 and BiVO 3 , separately) were also embedded into the tri‐triazine units of g‐C 3 N 4 by a sonication‐assisted solvothermal method . The bactericidal efficiency of AgVO 3 QDs‐g‐C 3 N 4 was as high as 96.4% in only 10 min towards Gram‐negative Salmonella .…”

Section: Graphitic Carbon Nitride (G‐c3n4)‐based Photocatalysts For Wmentioning

confidence: 99%

“…Besides converting into RSs, such as H 2 O 2 and •O 2 − , e − is capable of directly attacking the cell membrane by degrading fatty acids with the help of Co‐enzyme . It is worth noting that photocatalytic reduction by photo‐induced electrons is a vital disinfection pathway in many examples, particularly under anaerobic conditions . In contrast, Liang et al .…”

Section: Generation and Roles Of Rssmentioning

confidence: 99%

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Two‐dimensional nanomaterials for photocatalytic water disinfection: recent progress and future challenges

Liu

Zeng

et al. 2018

J of Chemical Tech & Biotech

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Photocatalysis has received ever‐growing attention as a promising alternative to traditional water treatment technologies for waterborne biohazard inactivation. Due to unique optical, electronic, physicochemical properties and feasibility of functional architecture assembly, two‐dimensional (2D) nanomaterials have become important in developing novel photocatalysts. This review summarizes the recent progress in configuring nanostructures with 2D materials as building blocks for photocatalytic water disinfection. In this review, five categories of 2D nanomaterials, that is, graphene, graphitic carbon nitride, 2D metal oxides and metallates, metal oxyhalides and transition metal dichalcogenides, for photocatalytic pathogen inactivation are introduced. First, the synthesis process, nanostructure engineering and disinfection performance of 2D‐based photocatalysts are reviewed in categories. In the following section, the bacteria destruction mechanism based on the generation and roles of reactive species (RSs) is presented. Moreover, the effects of the chemical characteristics of the water matrix on photocatalytic bactericidal performance are discussed. Finally, the challenges regarding the development and application of 2D‐based photocatalysts for highly efficient water sterilization are highlighted. © 2018 Society of Chemical Industry

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Photocatalytic Water Disinfection

Upadhyay¹,

Chakma²

2021

Applied Water Science

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Mechanism insight into rapid photocatalytic disinfection of Salmonella based on vanadate QDs-interspersed g-C3N4 heterostructures

Cited by 182 publications

References 53 publications

Silver‐Laden Black Phosphorus Nanosheets for an Efficient In Vivo Antimicrobial Application

Silver‐Laden Black Phosphorus Nanosheets for an Efficient In Vivo Antimicrobial Application

Two‐dimensional nanomaterials for photocatalytic water disinfection: recent progress and future challenges

Photocatalytic Water Disinfection

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