Heterostructured ZnFe(2)O(4)/Fe(2)TiO(5)/TiO(2) Composite Nanotube Arrays with an Improved Photocatalysis Degradation Efficiency Under Simulated Sunlight Irradiation.
Heterostructured ZnFe(2)O(4)/Fe(2)TiO(5)/TiO(2) Composite Nanotube Arrays with an Improved Photocatalysis Degradation Efficiency Under Simulated Sunlight Irradiation.
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模拟阳光照射下提高光催化降解效率的异质结构 ZnFe2O4/Fe2TiO5/TiO2 复合纳米管阵列
DOI：
10.1007/s40820-017-0169-x
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发表时间：
2018
影响因子：
26.6
通讯作者：
Yan M
中科院分区：
文献类型：
--
作者：
Xiong K;Wang K;Chen L;Wang X;Fan Q;Courtois J;Liu Y;Tuo X;Yan M
为了提高二氧化钛纳米管阵列（TONTAs）的可见光吸收和光催化活性，采用一种新型的偏置电压辅助灌注方法将ZnFe2O4（ZFO）纳米晶体灌注到原始TONTA管道中。当ZFO悬浮液（0.025 mg mL-1）在60 V偏置电压下保持1小时时，ZFO纳米晶体在原始TONTAs的内壁上锚定良好。750℃退火2小时后，成功获得异质结构的ZFO/Fe2TiO5(FTO)/ tio2复合纳米管阵列。此外，当ZFO与原始TONTAs界面发生固溶反应时，Fe3+被还原为Fe2+。引入ZFO后，ZFO/FTO/TONTAs的可见光吸收率明显高于退火后的TONTAs。ZFO/FTO/TONTAs中I型带和II型带交错排列共存，促进了光生电子和空穴的分离，从而提高了模拟阳光照射下ZFO/FTO/TONTAs光催化降解亚甲基蓝的效率。
To improve the visible light absorption and photocatalytic activity of titanium dioxide nanotube arrays (TONTAs), ZnFe2O4(ZFO) nanocrystals were perfused into pristine TONTA pipelines using a novel bias voltage-assisted perfusion method. ZFO nanocrystals were well anchored on the inner walls of the pristine TONTAs when the ZFO suspensions (0.025 mg mL-1) were kept under a 60 V bias voltage for 1 h. After annealing at 750 °C for 2 h, the heterostructured ZFO/Fe2TiO5(FTO)/TiO2composite nanotube arrays were successfully obtained. Furthermore, Fe3+was reduced to Fe2+when solid solution reactions occurred at the interface of ZFO and the pristine TONTAs. Introducing ZFO significantly enhanced the visible light absorption of the ZFO/FTO/TONTAs relative to that of the annealed TONTAs. The coexistence of type I and staggered type II band alignment in the ZFO/FTO/TONTAs facilitated the separation of photogenerated electrons and holes, thereby improving the efficiency of the ZFO/FTO/TONTAs for photocatalytic degradation of methylene blue when irradiated with simulated sunlight.
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影响因子：
17.1
作者：
Kuang, Daibin;Brillet, Jeremie;Graetzel, Michael
通讯作者：
Graetzel, Michael
Ag修饰自支撑TiO2纳米管阵列光催化降解有机污染物及界面电化学响应
影响因子：
--
作者：
He, Xingliang;Cai, Yunyu;Liang, Changhao
通讯作者：
Liang, Changhao
影响因子：
11.4
作者：
Hu, Liangsheng;Fong, Chi-Chun;Yang, Mengsu
通讯作者：
Yang, Mengsu
影响因子：
5.2
作者：
Frandsen, C.;Morup, S.;Langenhorst, F.
通讯作者：
Langenhorst, F.
影响因子：
6.7
作者：
Gao, Xianfeng;Guan, Dongsheng;Yuan, Chris
通讯作者：
Yuan, Chris