北京工业大学传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室,北京,100022
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桑丽霞, 李群伟, 胥利先, 等. 掺杂Cu2+对钙钛矿型LaFeO3光催化分解水制氢性能的影响[J]. 西安交通大学学报, 2008,42(5):626-629.
桑丽霞, 李群伟, 胥利先, et al. Effect of Doping Cu2+on Photocatalytic Activity of Perovskite Oxides LaFeO3 for Hydrogen Evolution from Water[J]. 2008, 42(5): 626-629.
利用柠檬酸法制备了系列钙钛矿型复合氧化物LaFe
1-x
Cu
x
O
3
(x=0~0.07)
通过XRD、TEM、UV-VIS DRS、XPS和PLS等表征手段对其晶相结构、形貌、吸光特性和表面性质进行了表征
并结合光催化分解水反应评价了其产氢活性.结果表明:柠檬酸法制得的钙钛矿型LaFeO
3
为纳米级材料
其在紫外-可见光区具有较宽的吸收带
掺杂Cu
2+
可增强对可见光的吸收; 在紫外光的激发下
系列纳米钙钛矿型LaFe
1-x
Cu
x
O
3
(x=0~0.07)具有一定的光催化分解水产氢活性
且掺杂Cu
2+
可在一定程度上提高产氢量
其掺杂的最佳摩尔分数为0.05.
Perovskite oxides LaFe
1-x
Cu
x
O
3
(x=0-0.07)was prepared by a conventional citrate complex method. The structure
shape
particle size
the photon absorption performance and surface property of the prepared LaFe
1-x
Cu
x
O
3
(x=0-0.07)were investigated by using XRD
TEM
UV-VIS DRS
XPS and PLS techniques. Perovskite oxides LaFeO
3
prepared is a kind of nano-sized material. Perovskite oxides LaFeO
3
has the good absorption property in UV-visible region
and a series of Cu-doped LaFeO
3
have more respondence to the visible light. Under UV light irr
adiation
H
2
can be produced by photocatalytic decomposingof water over the prepared LaFe
1-x
Cu
x
O
3
(x=0-0.07). Doping Cu
2+
can enhance the photocatalytic activity of LaFeO
3
to a certain extent
and the optimal doping molar fraction of catalyst is 0.05.
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