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Boron-doped onion-like carbon with enriched substitutional boron: the relationship between electronic properties and catalytic performance
Lin, Yangming; Zhu, Yansong; Zhang, Bingsen; Kim, Yoong Ahm; Endo, Morinobu; Su, Dang Sheng; dssu@imr.ac.cn
2015
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume3Issue:43Pages:21805-21814
AbstractIncorporating heteroatoms into onion-like carbon (OLC, average size similar to 5 nm) with a fullerene-like structure and investigating its peculiar properties are fascinating challenges. Here, we present straightforward fabrication of doped OLC samples with a high concentration of boron (0.63-4.57 at%) via a high-temperature thermal diffusion method. The highest proportion of substitutional boron of the boron species reaches 29%, which far exceeds most of the reported boron-doped carbon materials. The influence of boron on the fullerene-like layers and electronic properties of OLC is systematically investigated using Raman spectroscopy with different excitation energies (1.58-3.8 eV) and ultraviolet photoelectron spectroscopy (UPS). The as-prepared boron-doped OLC samples exhibit a perfect four-electron process for the oxygen reduction reaction (ORR), which is similar to commercial Pt/C. It is worth noting that the intrinsic relationship between the electronic properties and catalytic performance of doped samples is explored based on experimental studies instead of theoretical calculations. The results indicate that the lower work function, lower valence band edge and higher density of states (DOSs) of doped OLC are crucial to improve the catalytic performance. Our work can provide valuable information on the design of doped metal-free materials and give new evidence for enhanced ORR activity associated with heteroatom doping and electronic properties.
description.department[lin, yangming] univ sci & technol china, sch chem & mat sci, hefei 230026, peoples r china ; [lin, yangming ; zhu, yansong ; zhang, bingsen ; su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [kim, yoong ahm] chonnam natl univ, sch polymer sci & engn, kwangju 500757, south korea ; [endo, morinobu] shinshu univ, carbon inst sci & technol, nagano 3808553, japan ; [su, dang sheng] max planck gesell, fritz haber inst, dept inorgan chem, d-14195 berlin, germany
Funding OrganizationMOST [2011CBA00504]; NSFC of China [21133010, 51221264, 21261160487]; "Strategic Priority Research Program" of Chinese Academy of Sciences [XDA09030103]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74656
Collection中国科学院金属研究所
Corresponding Authordssu@imr.ac.cn
Recommended Citation
GB/T 7714
Lin, Yangming,Zhu, Yansong,Zhang, Bingsen,et al. Boron-doped onion-like carbon with enriched substitutional boron: the relationship between electronic properties and catalytic performance[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(43):21805-21814.
APA Lin, Yangming.,Zhu, Yansong.,Zhang, Bingsen.,Kim, Yoong Ahm.,Endo, Morinobu.,...&dssu@imr.ac.cn.(2015).Boron-doped onion-like carbon with enriched substitutional boron: the relationship between electronic properties and catalytic performance.JOURNAL OF MATERIALS CHEMISTRY A,3(43),21805-21814.
MLA Lin, Yangming,et al."Boron-doped onion-like carbon with enriched substitutional boron: the relationship between electronic properties and catalytic performance".JOURNAL OF MATERIALS CHEMISTRY A 3.43(2015):21805-21814.
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