Fabrication of bacterial cellulose with TiO2-ZnO nanocomposites as a multifunctional membrane for water remediation

Wahid, Fazli; Zhao, Xueqing; Cui, Ji-Xiao; Wang, Yun-Ya; Wang, Fengping; Jia, Shiru; Zhong, Cheng

doi:10.1016/j.jcis.2022.03.108

Cited by 29 publications

(10 citation statements)

References 65 publications

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“…The XRD pattern of the pristine BC revealed that the diffraction peaks observed at 2 θ degrees of 14.8°, 16.7°, and 22.6° correspond to the (100), (010), and (110) I α crystal planes of the triclinic system (Figure 1B). [ 17 ] The crystalline structure of BCS composite membrane became less evident owing to the amorphous nature of SG. [ 7 ] An extra peak was observed at 2 θ = 10.27° in the XRD pattern of the BCS@UA n composite membrane, which was characteristic of the monoclinic crystal structure of UA.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Zhao,

Shi,

Niu

et al. 2024

Adv Healthcare Materials

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Bacterial cellulose is an extracellular polysaccharide produced by microorganisms, offering advantages such as high water‐holding capacity, flexibility, and biocompatibility. However, its lack of bactericidal activity hampers its wide application. Usnic acid, a secondary metabolite derived from lichens of the Usnea genus, is recognized for its antibacterial and anti‐biofilm efficiency, coupled with anti‐inflammatory properties. Its water insolubility presents challenges for wide utilization and stable release. Sanxan gel, a novel polysaccharide, exhibits exceptional freeze‐thaw stability, suspension properties, and high elasticity, rendering it effective as a suspending agent to improve the bioavailability of water‐insoluble drugs. In this study, a hydrogel membrane was designed by combining bacterial cellulose and usnic acid suspended in sanxan gel through a simple in situ microorganism fermentation. The obtained membranes demonstrated excellent ability for sustained drug release, strong eradication capability against tested bacteria in both in vitro and in vivo experiments, effective inhibition of biofilm formation, and excellent hemocompatibility and cytocompatibility. Additionally, the composite membranes promoted wound healing with reduced inflammation and bacterial infection in a full‐thickness wound infection model in mice. This study provides innovative insights and strategies for the development of functional dressings for infected wounds in future clinical applications.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 99%

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Zhao,

Shi,

Niu

et al. 2024

Adv Healthcare Materials

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“…These strong radicals would react with the organic pollutant to produce H 2 O and CO 2 . 61,62 The photodegradation process could be expressed using the following equations:…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Therefore, the photodegradation mechanism of organic dyes was proven to be a synergistic effect of the photogenerated carrier and the added H 2 O 2 (Figure c). These strong radicals would react with the organic pollutant to produce H 2 O and CO 2 . , The photodegradation process could be expressed using the following equations: …”

Section: Resultsmentioning

confidence: 99%

Agave-Angustifolia-like Cu₃Mo₂O₉ Nanoplate-Coated Copper Mesh for Effective Emulsion Separation and Photocatalytic Degradation of Soluble Dyes

Mokoba

Liu

et al. 2022

Ind. Eng. Chem. Res.

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Significant progress has been made in the development of membranes characterized by high permeation flux, special wettability, selectivity, and stability during oily wastewater separation. However, more research is needed in multitasking membranes. Herein, we introduce a facile strategy of fabricating a superhydrophilic and underwater superoleophobic agave-angustifolia-like Cu 3 Mo 2 O 9 nanoplate-coated copper mesh membrane via subsequent chemical oxidation, hydrothermal deposition, and calcination methods. The synergistic effect of the hierarchical structure and photocatalytic activity of the Cu 3 Mo 2 O 9 coating endowed the as-fabricated membrane with superwettability and self-cleaning ability, resulting in high permeation flux (up to 3503.18 L•m −2 •h −1 for surfactant-free emulsions and 917.20 L•m −2 • h −1 for surfactant-stabilized emulsions) and low oil residues in the filtrate (COD value of 11.4 mg L −1 for surfactant-free emulsions and 86.8 mg L −1 for surfactant-stabilized emulsions) during oil-in-water emulsion separation, as well as photocatalytic dye degradation capabilities for methylene blue (92.4%) and rhodamine B (68.6%). Furthermore, the as-fabricated membrane exhibited favorable chemical stability and abrasive resistance. The strategy presented in this work provided a method to produce a durable membrane for efficient oil−water separation with photocatalytic properties and can withstand harsh environments.

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“…As a photocatalyst, ZnO has several benefits, including its wide range of band gap, which enables it to absorb an extensive range of wavelengths of light, and its relatively low toxicity. Zinc oxide produces hole pairs of electrons when subjected to light, which can then be used to oxidize contaminants in water . It has been discovered that ZnO is good in oxidizing a variety of contaminants, including organic materials, microorganisms, and pathogens.…”

Section: Introductionmentioning

confidence: 99%

“…Zinc oxide produces hole pairs of electrons when subjected to light, which can then be used to oxidize contaminants in water. 20 It has been discovered that ZnO is good in oxidizing a variety of contaminants, including organic materials, microorganisms, and pathogens. Additionally, the performance of ZnO is improved by preparing ZnO nanoparticles having enlarged surface area-to-volume ratio thus improving the active sites for photocatalytic degradation of pollutants.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C₃N₄/ZnO Ternary Composites

Shakoor,

Jilani

et al. 2024

ACS Omega

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Methylene blue (MB) is a toxic contaminant present in wastewater. Here, we prepared various composites of graphene oxide (GO) with graphitic carbon nitride (g-C 3 N 4 ) and zinc oxide (ZnO) for the degradation of MB. In comparison to ZnO (22.9%) and g-C 3 N 4 /ZnO (76.0%), the ternary composites of GO/g-C 3 N 4 / ZnO showed 90% photocatalytic degradation of MB under a light source after 60 min. The experimental setup and parameters were varied to examine the process and effectiveness of MB degradation. Based on the results of the experiments, a proposed photocatalytic degradation process that explains the roles of GO, ZnO, and g-C 3 N 4 in improving the photocatalytic efficacy of newly prepared GO/g-C 3 N 4 /ZnO was explored. Notably, the g-C 3 N 4 /ZnO nanocomposite's surface was uniformly covered with ZnO nanorods. The images of the samples clearly demonstrated the porous nature of GO/g-C 3 N 4 /ZnO photocatalysts, and even after being mixed with GO, the g-C 3 N 4 /ZnO composite retained the layered structure of the original material. The catalyst's porous structure plausibly enhanced the degradation of the contaminants. The high-clarity production of g-C 3 N 4 and the effectiveness of the synthesis protocol were later validated by the absence of any trace contamination in the energy-dispersive X-ray spectroscopy (EDS) results. The composition of the ZnO elements and their spectra were revealed by the EDS results of the prepared ZnO nanorods, g-C 3 N 4 /ZnO, and GO/g-C 3 N 4/ ZnO. The outcomes indicated that the nanocomposites were highly uncontaminated and contained all necessary elements to facilitate the transformative process. The results of this experiment could be applied at a large scale, thus proving the effectiveness of photocatalysts for the removal of dyes.

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Fabrication of bacterial cellulose with TiO2-ZnO nanocomposites as a multifunctional membrane for water remediation

Cited by 29 publications

References 65 publications

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Agave-Angustifolia-like Cu₃Mo₂O₉ Nanoplate-Coated Copper Mesh for Effective Emulsion Separation and Photocatalytic Degradation of Soluble Dyes

Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C₃N₄/ZnO Ternary Composites

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Fabrication of bacterial cellulose with TiO2-ZnO nanocomposites as a multifunctional membrane for water remediation

Cited by 29 publications

References 65 publications

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Enhancing Wound Healing and Bactericidal Efficacy: A Hydrogel Membrane of Bacterial Cellulose and Sanxan Gel for Accelerating the Healing of Infected Wounds

Agave-Angustifolia-like Cu3Mo2O9 Nanoplate-Coated Copper Mesh for Effective Emulsion Separation and Photocatalytic Degradation of Soluble Dyes

Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C3N4/ZnO Ternary Composites

Contact Info

Product

Resources

About

Agave-Angustifolia-like Cu₃Mo₂O₉ Nanoplate-Coated Copper Mesh for Effective Emulsion Separation and Photocatalytic Degradation of Soluble Dyes

Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C₃N₄/ZnO Ternary Composites