文献汇报
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制备方法
preparation of BBN/BiOClxBr0.5-x
The preparation process was as follows: （1）4mmol Bi(NO3)3.5H2O was added into 30mL deionized water, with ultrasonic dispersing 20 min. Meanwhile, xmmol NaCl(x=0mmol,0.3mmoL,0.9mmoL,1.5mmol)and ymmolNaBr(y=1.5mmol,1.2mmol,0.6mmol,0mmol)were dissolved in 30min deionized water, respectively. （2）混合 超声处理10min, 机械搅拌10min (3) the BBN was acquired through the above process in the absence of Nacl and NaBr (4) The BiOClxBr0.5-x solid sountion were prepared following the same process by adjusting the Bi(NO3)3.5H2O to 3mmol. (5) As-prepared BiOClxBr0.5-x were marked as BiOBr0.5, BiOCl0.1Br0.4, BiOCl0.3Br0.2, BiOCl0.5
文献汇报
汇报人：强利娜
BBN/BioclxBr0.5-x光降解有机物的研
究
introducti来自百度文库n
（1）some studies have shown that the Bi6O6(OH)3(NO3)3.1.5H2O(BBN) has stable chemical structure, low cast, non-toxic and high specific surface area[3]. But BBN only responses under UV light due to its wide band gap(above 3.38ev), which limits to the extensive application. （2）some researchers have prepared the bismuth oxyhalides solid solutions, such as BiOClxBr1-x, BiOClxI1-x （3）the BBN modified BiOClxBr0.5-x(x=0, 0.1, 0.3, 0.5) have never been reported.
峰位于：159.18ev 164.48ev Bi4f5/2 Bi4f 7/2
68.28ev 69.18ev Br3d3/2
Br3d5/2
197.98ev 199.38ev Cl 2p3/2 Cl2p1/2
406.68ev BBN
529.3ev 530.1ev 531.4ev 532.21ev .OH Bi2O22+ Bi-O H2O
BBN O2
e- e- e-
O2e- e- e-
potential (ev)
3.38ev
0
CB
h+ h+ h+
3.0ev
Dye
h+ h+ h+
VB
BiOCl0.3Br0. CO2+H2O
2
结论
1 采用一步水热法成功的制备出BBN/BiOClxBr0.5-x 2 复合之后提高了光催化活性 3 光催化活性的提高主要因为可见光吸收的提高，电子空穴对分 离效率的提高