Moshtaghi Saeed, Hamadanian Masoud, Amiri Omid, Goli Maryam, Salavati-Niasari Masoud
Institute of Nano Science and Nano Technology, University of Kashan P. O. Box 87317-51167 Kashan I. R. Iran
Faculty of Chemistry, Razi University P. O. Box 6714414971 Kermanshah Iran.
RSC Adv. 2021 Jun 18;11(35):21588-21599. doi: 10.1039/d1ra02244j. eCollection 2021 Jun 15.
Magnesium silicate (forsterite) nanoparticles were synthesized by a facile hydrothermal method, and characterized using several techniques such as XRD, SEM, EDS, DRS, Raman, TEM, and FT-IR. Several carboxylic acid structures were applied to modify the morphology and surface properties of the as-prepared particles. In this manuscript, citric acid, maleic acid, and succinic acid were used as the carboxylic acid agents. The effect of changing the ratio of carboxylic acid agent to central metal on the morphology and photocatalytic behavior was evaluated. The activities of the MgSiO nanostructures as photocatalysts were assessed by the degradation of several azo dyes (Acid Blue 92, Acid Brown 14, and Acid Violet 7) under UV and Vis light irradiation. The degradation percentages of Acid Blue 92 were about 88% and 74% in the presence of Vis and UV light respectively, and the percentages for photodegradation of Acid Brown 14 were approximately 76% and 82% in the presence of Vis and UV light, respectively. Furthermore, the degradation percentages for Acid Violet 7 were 93% and 80% under UV and Vis light, respectively.
采用简便的水热法合成了硅酸镁（镁橄榄石）纳米颗粒，并使用XRD、SEM、EDS、DRS、拉曼、TEM和FT-IR等多种技术对其进行了表征。应用了几种羧酸结构来修饰所制备颗粒的形貌和表面性质。在本论文中，柠檬酸、马来酸和琥珀酸被用作羧酸试剂。评估了改变羧酸试剂与中心金属的比例对形貌和光催化行为的影响。通过在紫外光和可见光照射下对几种偶氮染料（酸性蓝92、酸性棕14和酸性紫7）的降解来评估MgSiO纳米结构作为光催化剂的活性。在可见光和紫外光存在下，酸性蓝92的降解率分别约为88%和74%，酸性棕14在可见光和紫外光存在下的光降解率分别约为76%和82%。此外，酸性紫7在紫外光和可见光下的降解率分别为93%和80%。
