摘要
Cadmium hydroxyapatite（Cd-Hap） hierarchical structures with novel morphologies were successfully synthesized via a simple template-free and mild hydrothermal method. By properly monitoring the initial pH value of the reaction solutions, the morphology of the Cd-Hap crystals could be tuned to be bunch-like（consist of nanosized cuboids）, quasi peanut-like（consist of nanoparticles） and flower-like（consist of assembled bundles units）. On the basis of a series of contrast experiments over time, the probable growth mechanism and fabrication process of the products were proposed. The optical and photocatalytic properties of the obtained Cd-Hap hierarchical structures were firstly investigated. The results showed that pure Cd-Hap could only absorb UV light with wavelength shorter than -350 nm while hydroxyapatite supported Ag3PO4 composites showed a pronounced photocatalytic activity upon decomposition of methyl orange dye in aqueous solution under visible light irradiation. The support of hydroxyapatite can also greatly reduce the cost of expensive Ag3PO4 photocatalysts in practical applications.
Cadmium hydroxyapatite（Cd-Hap） hierarchical structures with novel morphologies were successfully synthesized via a simple template-free and mild hydrothermal method. By properly monitoring the initial pH value of the reaction solutions, the morphology of the Cd-Hap crystals could be tuned to be bunch-like（consist of nanosized cuboids）, quasi peanut-like（consist of nanoparticles） and flower-like（consist of assembled bundles units）. On the basis of a series of contrast experiments over time, the probable growth mechanism and fabrication process of the products were proposed. The optical and photocatalytic properties of the obtained Cd-Hap hierarchical structures were firstly investigated. The results showed that pure Cd-Hap could only absorb UV light with wavelength shorter than -350 nm while hydroxyapatite supported Ag3PO4 composites showed a pronounced photocatalytic activity upon decomposition of methyl orange dye in aqueous solution under visible light irradiation. The support of hydroxyapatite can also greatly reduce the cost of expensive Ag3PO4 photocatalysts in practical applications.
基金
supported by the National Natural Science Foundation of China(Nos.21103193,21275089,and 21303094)
Doctoral Foundation of Shandong Province(BS2013NJ013)
China Postdoctoral Science Foundation(2015M572011)
National Undergraduate Training Program for Innovation and Entrepreneurship(201510446061)
