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Carbon quantum dots as novel sensitizers for photoelectrochemical solar hydrogen generation and their size-dependent effect
Yu, Xuelian; Liu, Rongji; Zhang, Guangjin; Cao, Hongbin
2013-08-23
Source PublicationNANOTECHNOLOGY
Volume24Issue:33Pages:335401
AbstractAs a result of global energy needs, much research has been devoted to the conversion of solar energy to various usable forms, such as chemical energy in the form of hydrogen via water splitting. To make the conversion methods efficient, economically practical, and industrially scalable, sensitizers capable of utilizing visible and near infrared (IR) light need to be developed. Herein, water-soluble, colloidally stable carbon quantum dots (CQDs) are successfully synthesized by a facile one-step alkali-assisted electrochemical method. Owing to their broad visible light absorption, upconversion luminescence properties and efficient electron injection to TiO2, these CQDs can be used as the sensitizer for photoelectrochemical cells and show an optimized photocurrent of 1.2 mA cm(-2) at 0 V versus Ag/AgCl under 100 mW cm(-2) simulated sunlight. The above results indicate that the elementally abundant and environmentally friendly CQDs, as a novel sensitizer, can surely be employed to make full use of the visible spectrum of sunlight for their application in photovoltaic devices.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordVISIBLE-LIGHT PHOTOCATALYSIS ; PHOTOVOLTAIC DEVICES ; EMERGENT NANOLIGHTS ; HIGHLY EFFICIENT ; WATER ; NANOSTRUCTURES ; NANOMATERIALS ; CONVERSION ; ARRAYS ; ROUTE
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000322377600007
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13607
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Yu, Xuelian,Liu, Rongji,Zhang, Guangjin,et al. Carbon quantum dots as novel sensitizers for photoelectrochemical solar hydrogen generation and their size-dependent effect[J]. NANOTECHNOLOGY,2013,24(33):335401.
APA Yu, Xuelian,Liu, Rongji,Zhang, Guangjin,&Cao, Hongbin.(2013).Carbon quantum dots as novel sensitizers for photoelectrochemical solar hydrogen generation and their size-dependent effect.NANOTECHNOLOGY,24(33),335401.
MLA Yu, Xuelian,et al."Carbon quantum dots as novel sensitizers for photoelectrochemical solar hydrogen generation and their size-dependent effect".NANOTECHNOLOGY 24.33(2013):335401.
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