Efficient Photocatalytic Hydrogen Evolution over Platinum and Boron Co-doped TiO2 Photocatalysts
Efficient Photocatalytic Hydrogen Evolution over Platinum and Boron Co-doped TiO2 Photocatalysts
复制标题
铂和硼共掺杂 TiO2 光催化剂的高效光催化析氢
DOI：
10.5755/j01.ms.20.4.6412
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发表时间：
2014-01-01
影响因子：
1
通讯作者：
Yuan, Hong
中科院分区：
文献类型：
--
作者：
Jin, Zhiliang;Hao, Xuqiang;Yuan, Hong
In this paper, the new photocatalyst, Pt x- /TiO 2-y B y was prepared by impregnation method via coupling with a inorganic water splitting system, namely, a ternary system K + ,Na + /B 4 O 7 2- - H 2 O for hydrogen evolution. The integration process of the preparation for B doping Pt/TiO 2 with the significant photocatalytic hydrogen evolution in the ternary system K + ,Mg 2+ /B 4 O 7 2- - H 2 O and K + ,Na + /B 4 O 7 2- - H 2 O were accomplished by impregnation in situ. The photocatalyst Pt x- /TiO 2-y B y synthesis and the photocatalytic hydrogen production of the isothermal solubility of the ternary system K + ,Mg 2+ /B 4 O 7 2- - H 2 O and K + ,Na + /B 4 O 7 2- - H 2 O at 25 oC have been studied. Thus, the present challenge is not only to demonstrate a suitable photocatalytical system that can efficiently produce hydrogen under the borate exsited, but also research that the addition of borate to the suspensions greatly enhanced the stability of the photocatalysts over semiconductor catalysts.The results show that borate solution is a suitable for B doped TiO 2 photocatalysts preparation and a novel photocatalyst Pt x- /TiO 2-y B y was successfully prepared by this way. XRD and XPS characterization showed that both anatase and rutile are coexisted and the B is incorporated into the crystal of the TiO 2 .So the TiO 2 can be denoted as TiO 2-x B x . The effect of borate on the photocatalytic properties were investigated. The results showed that the amount of hydrogen evolved is enhanced by factors of 4 with the addition of H 3 BO 3 to the ethanol/water reaction solutions. The role of boron anion does not act as a sacrificial electron donors. DOI: http://dx.doi.org/10.5755/j01.ms.20.4.6412
