Using nanodiamond particles in photoanode of dye-sensitised solar cell

Micro & nano letters

article

Seyyed Mohammad Hossein Hejazi¹  Jamshid Aghazadeh Mohandesi¹ 

[1] Department of Mining and Metallurgical Engineering, Amirkabir University of Technology

关键词: dye-sensitised solar cells;    electrochemical electrodes;    photoelectrochemistry;    diamond;    nanoparticles;    spin coating;    electrical conductivity;    elemental semiconductors;    nanodiamond particles;    photoanode;    dye-sensitised solar cell;    nanodiamond scattering layer thickness;    spin-coating speed;    current-voltage test;    C;   

DOI  :  10.1049/mnl.2017.0450

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Background: Essential oil (EO) obtained from Ixora scheffleri subspecies (subsp.) keniensis has valuable biological properties and can play a possible therapeutic role because of its antimicrobial and antioxidant nature. Aim: In this article, the chemical constituents, antimicrobial activity and antioxidant capacity of the EO obtained from Ixora scheffleri subsp. keniensis were determined using standard procedures. Setting: Plant material collection, essential oils extractions and antimicrobial assays were performed at Jomo Kenyatta University of Agriculture and Technology (JKUAT), Department of Botany Laboratories. Gas Chromatography Mass Spectrophotometry (GC/MS) analysis was carried out at the Physical Science Laboratory, MacEwan University, Canada. Methods: The chemical constituents were determined using GC/MS. The total phenol content was evaluated using the Folin–Ciocalteu procedure. The antioxidant activity was determined using 2,2-diphenyl-1- picrylhydrazyl (DPPH) and β -carotene linoleic acid assays. The antimicrobial assay was performed using the disc diffusion method. Results: The total phenol content of the EO was estimated to be 91.6 µ g/mg ± 0.5 µ g/mg. The antioxidant activity of EO obtained from Ixora relative to ascorbic acid was found to be 52% using the β -carotene linoleic acid assay. The DPPH scavenging activity of 30 µ g/mL EO obtained from Ixora and 30 µ g/mL ascorbic acid was 81.65% and 97.0%, respectively. The EO was found to have significant susceptibility against Escherichia coli , and intermediate susceptibility against Candida albicans . However, Staphylococcus aureus, Bacillus subtilis and Pseudomonas aeruginosa showed complete resistance. Conclusion: The in vitro chemical compositional analysis of EO obtained from Ixora scheffleri subsp. keniensis confirms the presence of phenolic compounds attesting to the antioxidant properties and antimicrobial properties.

【 授权许可】

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