摘要
High crystallinity of TiOwas prepared by a modified alcohothermal method, in which titanium isopropoxide was used as the titania precursor, absolute ethanol as the reaction medium, and NHHCOas the raw materials for release of water, ammonia and carbon dioxides via in-situ decomposition. The X-ray powder diffraction（XRD） and transmission electron microscope（TEM） measurements showed that water and ammonia from the in-situ decomposition of NHHCOplayed an important role in conducting the size, shape, crystallinity and microstructure of TiO. The photoluminescence spectroscopy and photocurrent measurements indicated that enhanced crystallinity could hinder the recombination and promote the separation of electron-hole pairs in TiO, which contribute to the improvement of photocatalytic activity.Methyl orange photodegradation under UV light confirmed that high crystallinity of TiOdid present a high photocatalytic activity due to the effective separation of photoinduced charges.
High crystallinity of TiO_2 was prepared by a modified alcohothermal method, in which titanium isopropoxide was used as the titania precursor, absolute ethanol as the reaction medium, and NH_4HCO_3 as the raw materials for release of water, ammonia and carbon dioxides via in-situ decomposition. The X-ray powder diffraction(XRD) and transmission electron microscope(TEM) measurements showed that water and ammonia from the in-situ decomposition of NH_4HCO_3 played an important role in conducting the size, shape, crystallinity and microstructure of TiO_2. The photoluminescence spectroscopy and photocurrent measurements indicated that enhanced crystallinity could hinder the recombination and promote the separation of electron-hole pairs in TiO_2, which contribute to the improvement of photocatalytic activity.Methyl orange photodegradation under UV light confirmed that high crystallinity of TiO_2 did present a high photocatalytic activity due to the effective separation of photoinduced charges.
基金
support of the National Natural Science Foundation of China(No.21163008,No.21366020)
Jiangxi Collaborative Innovation Center for in vitro diagnostic reagents and instruments,the Natural Science Foundation of Jiangxi Province(No.20114BAB203009)
Scientific & Technological Project of Jiangxi Science and Technology Normal University(No.2013ZDPYJD01,No.2015CXTD003)
Graduate Innovation Foundation of Jiangxi Science and Technology Normal University(No.YC2014-X2)
