کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1528575 | 1511970 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
α-Fe2O3/Ti-Nb-Zr-O composite photoanode for enhanced photoelectrochemical water splitting
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: α-Fe2O3/Ti-Nb-Zr-O composite photoanode for enhanced photoelectrochemical water splitting α-Fe2O3/Ti-Nb-Zr-O composite photoanode for enhanced photoelectrochemical water splitting](/preview/png/1528575.png)
چکیده انگلیسی
Surface modification and doping of titanium dioxide (TiO2) nanotubes are efficient ways to obtain improved photosensitive characteristics. Here we report photocatalytic activity of α-Fe2O3 decorated Ti-Nb-Zr-O nanotube arrays. The Ti-Nb-Zr-O nanotube arrays were fabricated through anodization of Ti-Nb-Zr alloy in electrolytes of 1 M NaH2PO4 containing 0.5 wt% HF. X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) were used to characterize the heterojunction nanofilms. Nb- and Zr-doping could enhance the photocatalytic properties of the titanium oxide. However, more Zr-doping could lead to many defects that acted as recombination centers, which reduced the photocatalytic activity of the titanium oxide. The photocurrent density of the Ti-Nb-Zr-O nanotube photoanodes decorated with a small quantity of α-Fe2O3 could exhibit three times as high as that of the undoped TiO2 nanotube photoanodes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 196, June 2015, Pages 15-22
Journal: Materials Science and Engineering: B - Volume 196, June 2015, Pages 15-22
نویسندگان
Qiang Liu, Dongyan Ding, Congqin Ning, Xuewu Wang,