Photocatalytic, antimicrobial activities of biogenic silver nanoparticles and electrochemical degradation of water soluble dyes at glassy carbon/silver modified past electrode using buffer solution

被引：42

作者：

Khan, Zia Ul Haq ^{[1
,2
]}

Khan, Amjad ^{[3
]}

Shah, Afzal ^{[1
]}

Chen, Yongmei ^{[2
]}

Wan, Pingyu ^{[2
]}

Khan, Arif Ullah ^{[2
]}

Tahir, Kamran ^{[2
]}

Muhamma, Nawshad ^{[4
]}

Khan, Faheem Ullah ^{[2
]}

Shah, Hidayat Ullah ^{[5
]}

机构：

[1] Univ Sci & Technol Bannu, Dept Chem, Khyber Pakhtunkhwa 28100, Pakistan

[2] Beijing Univ Chem Technol, Sch Sci, Beijing 100029, Peoples R China

[3] China Med Univ, Coll Basic Med Sci, Res Ctr Med Genom, Shenyang 110122, Peoples R China

[4] COMSATS Inst Informat Technol, Interdisciplinary Res Ctr Biomed Mat, Lahore 54000, Pakistan

[5] Univ Sci & Technol Beijing, Sch Math & Phys, Dept Phys, Beijing 100083, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY | 2016年 / 156卷

基金：

中国国家自然科学基金;

关键词：

Silver nanoparticles; Antimicrobial and antioxidant activities; Photo degradation of bromothymol blue (BTB); Electrochemical properties and modified GC/AgNP electrode; GOLD NANOPARTICLES; ESCHERICHIA-COLI; METAL NANOPARTICLES; ANTIOXIDANT ACTIVITY; CHEMICAL-REDUCTION; GREEN SYNTHESIS; ANTIBACTERIAL; NANOCOMPOSITES; PLANTS; STABILIZATION;

D O I：

10.1016/j.jphotobiol.2016.01.016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In the present research work a novel, nontoxic and ecofriendly procedure was developed for the green synthesis of silver nano particle (AgNPs) using Caruluma edulis (C. edulis) extract act as reductant as well as stabilizer agents. The formation of AgNPs was confirmed by UV/Vis spectroscopy. The small and spherical sizes of AgNPs were conformed from high resolution transmission electron microscopy (HRTEM) analysis and were found in the range of 2-10 nm, which were highly dispersion without any aggregation. The crystalline structure of AgNPs was conformed from X-ray diffraction (XRD) analysis. For the elemental composition EDX was used and FTIR helped to determine the type of organic compounds in the extract. The potential electrochemical property of modified silver electrode was also studied. The AgNPs showed prominent antibacterial motion with MIC values of 125 mu g/mL against Bacillus subtilis and Staphylococcus aureus while 250 mu g/mL against Escherichia coli. High cell constituents' release was exhibited by B. subtilis with 2 x MIC value of silver nanoparticles. Silver nano particles also showed significant DPPH free radical scavenging activity. This research would have an important implication for the synthesis of more efficient antimicrobial and antioxidant agent. The AgNP modified electrode (GC/AgNPs) exhibited an excellent electro-catalytic activity toward the redox reaction of phenolic compounds. The AgNPs were evaluated for electrochemical degradation of bromothymol blue (BTB) dyes which showed a significant activity. From the strong reductive properties it is obvious that AgNPs can be used in water sanitization and converting some organic perilous in to non-hazardous materials. The AgNPs showed potential applications in the field of electro chemistry, sensor, catalyst, nano-devices and medical. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：100 / 107

页数：8

共 61 条

[1] Size dependent catalytic activities of green synthesized gold nanoparticles and electrocatalytic oxidation of catechol on gold nanoparticles modified electrode [J].