title: Hybrid 0D-2D Nanoheterostructures: In Situ Growth of Amorphous Silver Silicates Dots on g-C3N4Nanosheets for Full-Spectrum Photocatalysis.
abstract: The smaller particle sizes, better dispersion, and more heterojunction interfaces can enhance the photocatalytic performance of photocatalysts. Herein, ultradispersed amorphous silver silicates/ultrathin g-C3N4nanosheets heterojunction composites (a-AgSiO/CNNS) with intimate interfacial coupling effect were synthesized through the facile in situ precipitation of ultrafine a-AgSiO (∼5.2 nm) uniformly dispersed on the entire surface of hierarchical ultrathin CNNS. In this process, the ultrathin CNNS not only perform as the support to form heterostructures but also are employed as dispersant to confine the aggregation of a-AgSiO nanoparticles. Notably, the optimum photocatalytic activity of a-AgSiO/CNNS-500 composite is ∼36 and 13 times higher than that of CNNS toward the degradation of rhodamine B and tetracycline, respectively. The excellent photocatalytic activity can be attributed to the synergistic interactions of heterojunction with strong interfacial coupling effect, improved visible light absorbance, abundant heterojunction interfaces, and fully exposed reactive sites, which originate from the well-defined nanostructures such as uniform packing of the ultrasmall a-AgSiO, the intimate and maximum coupling interfaces between a-AgSiO and CNNS. We believe that such an easy and scalable synthetic strategy can be further extended to the fabrication of other ultrafine semiconductors coupled with g-C3N4for increasing its photocatalytic performance.
authors.affiliation: School of Physics and Technology, University of Jinan , Shandong 250022, PR China.
authors.forename: Shouwei
authors.initials: S
authors.lastname: Zhang
authors.affiliation: School of Physics and Technology, University of Jinan , Shandong 250022, PR China.
authors.forename: Huihui
authors.initials: H
authors.lastname: Gao
authors.affiliation: Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126, 230031 Hefei, PR China.
authors.forename: Xia
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126, 230031 Hefei, PR China.
authors.forename: Yongshun
authors.initials: Y
authors.lastname: Huang
authors.affiliation: School of Physics and Technology, University of Jinan , Shandong 250022, PR China.
authors.forename: Xijin
authors.initials: X
authors.lastname: Xu
authors.affiliation: NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia.
authors.forename: Njud S
authors.initials: NS
authors.lastname: Alharbi
authors.affiliation: NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia.
authors.forename: Tasawar
authors.initials: T
authors.lastname: Hayat
authors.affiliation: Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126, 230031 Hefei, PR China.|Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou, Jiangsu 215123, PR China.|NAAM Research Group, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia.
authors.forename: Jiaxing
authors.initials: J
authors.lastname: Li
keywords: 0D−2D; g-C3N4; interfacial engineering; photocatalysis; ultradispersed amorphous silver silicates