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Development and characterization of Carbon Observing Satellite
Zhang, H.; C. Lin; Y. Q. Zheng; W. Q. Wang; L. F. Tian; D. B. Liu and S. Li
Source PublicationJournal of Applied Remote Sensing
AbstractDefects (Ti3+ or oxygen vacancies) have been demonstrated to promote the charge separation process in TiO2 based photocatalysts. Particularly, the bulk defects within a certain concentration can give a great enhancement for both light absorption and charge separation efficiency. In this report, we explored a one-step molten salts route to synthesize SrTiO3 nanocubes with bulk defects (Ti3+ doped) by using SrCO3 as a Sr source, and TiO2 and Ti powder as Ti sources. The amount of defects can be tuned by changing the molar ratio of Ti/TiO2. The corresponding bandgap of SrTiO3 can be changed from 3.29 to 2.73 eV with the increase of defects. X-ray diffraction and electron microscopy disclose that SrTiO3 is highly crystalline and has a cubic morphology. X-ray photoelectron spectroscopy and electron paramagnetic resonance indicate that the as-prepared SrTiO3 is close to the Ti3+ doped SrTiO3. Surface photovoltage spectroscopy (SPS) and field-induced SPS confirm that Ti3+ doping in the SrTiO3 turns it from an n-type semiconductor to p-type. The SrTiO3 with an optimal amount of defects exhibits highly enhanced photocatalytic performance. An excess amount of defects results in a weak SPS response and photocatalytic performance.
Indexed BySCI
Document Type期刊论文
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GB/T 7714
Zhang, H.,C. Lin,Y. Q. Zheng,et al. Development and characterization of Carbon Observing Satellite[J]. Journal of Applied Remote Sensing,2016,10.
APA Zhang, H.,C. Lin,Y. Q. Zheng,W. Q. Wang,L. F. Tian,&D. B. Liu and S. Li.(2016).Development and characterization of Carbon Observing Satellite.Journal of Applied Remote Sensing,10.
MLA Zhang, H.,et al."Development and characterization of Carbon Observing Satellite".Journal of Applied Remote Sensing 10(2016).
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