Hydrothermal doping of Ag and ZnO nanoparticles in Sterculia cellulose mat for antimicrobial and photocatalytic applications

IF 3.5 4区 工程技术 Q3 ENERGY & FUELS
Krishna Prasad Kandel, Girja Mani Aryal, Menuka Adhikari, Bhawani Prasad Adhikari, Destiny Darden, Khem Raj Joshi, Mahesh Kumar Joshi, Bhoj Raj Gautam, Bhanu Bhakta Neupane
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引用次数: 0

Abstract

Lignocellulose biomass is being used as starting material for wide range of applications. In this study, lignocellulose biomass obtained from Sterculia villosa (Roxb.), a traditionally important fibrous plant, was processed chemo-mechanically to get cellulose sheet. The sheet was then doped with Ag and ZnO nanoparticles following single-pot hydrothermal synthesis. The scanning electron microscopy (SEM) of the mat showed uniform distribution of the nanoparticles. The characteristic features of Ag and ZnO nanoparticles were observed in UV–Vis, XRD, and SEM–EDX data. These features were also found in the sonicated sample suggesting stable doping of the nanoparticles in the mat. Antimicrobial activity of the mat was tested for two bacterial (Escherichia coli and Bacillus subtilis) strains and a fungal (Candida albicans) strain, and showed good antimicrobial activity against E. coli. The mat also showed excellent photocatalytic property tested for degradation of methylene blue under UV irradiation. These findings suggested that multifunctional nanocomposite mat can be fabricated using Sterculia villosa lignocellulose biomass which can be potentially used for antimicrobial packaging and water purification applications.

水热掺杂银和氧化锌纳米颗粒在Sterculia纤维素垫中的抗菌和光催化应用
木质纤维素生物质正被用作广泛应用的原料。在本研究中,从传统重要的纤维植物Sterculia villosa (Roxb.)中获得木质纤维素生物质,通过化学机械加工得到纤维素片。然后在单锅水热合成后,在薄片上掺杂Ag和ZnO纳米颗粒。薄片的扫描电镜(SEM)显示纳米颗粒分布均匀。通过UV-Vis、XRD、SEM-EDX等数据观察了Ag和ZnO纳米粒子的特征。这些特征也在超声样品中发现,表明纳米颗粒在垫子中稳定掺杂。垫子对两种细菌(大肠杆菌和枯草芽孢杆菌)菌株和一种真菌(白色念珠菌)菌株的抗菌活性进行了测试,并显示出对大肠杆菌的良好抗菌活性。在紫外照射下对亚甲基蓝的降解也表现出优异的光催化性能。这些研究结果表明,利用木质素纤维素生物质可以制备多功能纳米复合材料垫,并有望用于抗菌包装和水净化等领域。
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来源期刊
Biomass Conversion and Biorefinery
Biomass Conversion and Biorefinery Energy-Renewable Energy, Sustainability and the Environment
CiteScore
7.00
自引率
15.00%
发文量
1358
期刊介绍: Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.
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