کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990153 | 1516127 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ti(OBu)4 and cobalt iron oxide co-modified hematite nanoparticles synthesized by a facile anodic electrodeposition for highly efficient water oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ti(OBu)4 and cobalt iron oxide co-modified hematite nanoparticles synthesized by a facile anodic electrodeposition for highly efficient water oxidation Ti(OBu)4 and cobalt iron oxide co-modified hematite nanoparticles synthesized by a facile anodic electrodeposition for highly efficient water oxidation](/preview/png/7990153.png)
چکیده انگلیسی
Based on the bare hematite prepared by a facile anodic electrodeposition, Ti(OBu)4 modified hematite through FeOOH film surface is a better method for obtaining more excellent photoelectrochemical performance. This is due to the significantly increased bulk charge separation efficiency caused by the refined grain, preferred orientation of (110) plane and higher donor density. Coupled with Cobalt Iron Oxide (CIO) nanoparticles, Ti(OBu)4 modified hematite photoanode has a 3 times enhanced photocurrent density of 1.02â¯mAâ¯cmâ2 and a negative shift of onset potential about 40â¯mV compared with bare hematite photoanode. In which, Ti(OBu)4 can increase the electron-hole separation and passivate the surface trap states simultaneously. The CIO nanoparticles coated on the surface of Ti/FeOOH sample not only act as a catalyst for promoting the surface hole injection for water oxidation, but also boost the charge separation with passivating the surface states. This work provides an indepth understanding of the effect of Ti(OBu)4 and CIO nanoparticles on morphology, crystalline structure and photoelectrochemical performance of anodic electrodeposited hematite photoanode via systematical characterization with scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis spectra, X-ray diffractometry (XRD), X-ray photoelectron spectra (XPS), and photoelectrical measurements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 767, 30 October 2018, Pages 52-60
Journal: Journal of Alloys and Compounds - Volume 767, 30 October 2018, Pages 52-60
نویسندگان
Longzhu Li, Honglei Zhang, Changhai Liu, Penghua Liang, Naotoshi Mitsuzaki, Zhidong Chen,