PMID- 33348075 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 1873-1597 (Electronic) IS - 1572-1000 (Linking) VI - 33 DP - 2021 Mar TI - Biosynthesis of silver capped magnesium oxide nanocomposite using Olea cuspidata leaf extract and their photocatalytic, antioxidant and antibacterial activity. PG - 102153 LID - S1572-1000(20)30507-X [pii] LID - 10.1016/j.pdpdt.2020.102153 [doi] AB - Green chemistry is a modern area of research which covers synthesis of nanomaterials through useful, environmentally, economically friendly techniques and their use in different fields. The synthesis involves the formation of bimetallic nanomaterials to enhance their synergistic relationship and achieve special modulated properties. That's why bimetallic nanomaterials are extremely important and gaining interest among researchers in the field of medicinal chemistry for the treatment of various diseases. In this particular study, bimetallic nanoparticles synthesis was done by reduction procedure using leaf extract of Olea cuspidata. The phytochemicals in leaf extract act as stabilizing and capping agent in reduction of precursor's salts. The characterization of green synthesized Ag@MgO nanocomposite was done through several analytical techniques such as ultraviolet-visible (UV-vis) spectroscopy, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), High resolution transmission electron microscope (HRTEM) and Zeta potential. To explore the biological potential of synthesized nanocomposite, antibacterial activities against gram negative (Escherichia coli) bacteria and gram positive (Staphylococcus aureus) has been evaluated. The photocatalytic activity in contrary to methylene blue (MB) decomposition was seen efficiently. Moreover, the antioxidant nature of green synthesized Ag@MgO nanocomposite was analyzed by destabilizing and scavenging maximum percentage (93 %) of dangerous and harmful 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical. The best and surprising results provided the information for the presence of essential and vital components in Olea Cuspidata in the form of organic acids (Citrus Acid) aids in stabilizing the entire structure with enhanced properties. Up to the best of our knowledge, the facts and results obtained regarding the structure of Ag@MgO nanocomposite clearly illustrates the uniqueness of green chemistry and also its role in future developing multifunctional nanoparticles in the field of nanobiotechnology. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Khan, Afaq Ullah AU - Khan AU AD - State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China. FAU - Khan, Arif Ullah AU - Khan AU AD - State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China; Beijing Advaced Innovation Centre for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China. Electronic address: khanbuct@gmail.com. FAU - Li, Baoshan AU - Li B AD - State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China. Electronic address: bsli@mail.buct.edu.cn. FAU - Mahnashi, Mater H AU - Mahnashi MH AD - Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia. FAU - Alyami, Bandar A AU - Alyami BA AD - Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia. FAU - Alqahtani, Yahya S AU - Alqahtani YS AD - Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia. FAU - Alqarni, Ali O AU - Alqarni AO AD - Department of Pharmaceutical Chemistry, College of Pharmacy, Najran University, Najran, Saudi Arabia. FAU - Khan, Zia Ul Haq AU - Khan ZUH AD - Department of Environmental Sciences, COMSATS University, Vehari, 61100 Pakistan. FAU - Ullah, Sami AU - Ullah S AD - COMSATS University Islamabad, Abbottabad Campus, Pakistan. FAU - Wasim, Muhammad AU - Wasim M AD - PGR Medicine Group b Dermatology Saidu Group of Teaching Hospital Swat, KPK, Pakistan. FAU - Khan, Qudrat Ullah AU - Khan QU AD - College of Physics and Optoelectronics, Shenzhen University, Nanhai Ave, 3688, Shenzhen, Guangdong, 518060, PR China. FAU - Ahmad, Waqas AU - Ahmad W AD - State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China. LA - eng PT - Journal Article DEP - 20201225 PL - Netherlands TA - Photodiagnosis Photodyn Ther JT - Photodiagnosis and photodynamic therapy JID - 101226123 RN - 0 (Anti-Bacterial Agents) RN - 0 (Antioxidants) RN - 0 (Photosensitizing Agents) RN - 0 (Plant Extracts) RN - 3A3U0GI71G (Magnesium Oxide) RN - 3M4G523W1G (Silver) SB - IM MH - Anti-Bacterial Agents/pharmacology MH - Antioxidants/pharmacology MH - Magnesium Oxide MH - *Metal Nanoparticles MH - *Nanocomposites MH - *Olea MH - *Photochemotherapy/methods MH - Photosensitizing Agents MH - Plant Extracts/pharmacology MH - Silver OTO - NOTNLM OT - Ag@MgO nanocomposites OT - Cytotoxicity OT - Olea cuspidata OT - Photodegradation of methylene blue EDAT- 2020/12/22 06:00 MHDA- 2021/05/15 06:00 CRDT- 2020/12/21 20:11 PHST- 2020/09/13 00:00 [received] PHST- 2020/12/04 00:00 [revised] PHST- 2020/12/07 00:00 [accepted] PHST- 2020/12/22 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2020/12/21 20:11 [entrez] AID - S1572-1000(20)30507-X [pii] AID - 10.1016/j.pdpdt.2020.102153 [doi] PST - ppublish SO - Photodiagnosis Photodyn Ther. 2021 Mar;33:102153. doi: 10.1016/j.pdpdt.2020.102153. Epub 2020 Dec 25.