Rupturing C60 Molecules into Graphene-Oxide-like Quantum Dots: Structure, Photoluminescence, and Catalytic Application

被引：45

作者：

Chen, Guanxiong ^{[1
]}

Zhuo, Zhiwen ^{[1
]}

Ni, Kun ^{[1
]}

Kim, Na Yeon ^{[2
]}

Zhao, Yuan ^{[1
]}

Chen, Zongwei ^{[3
]}

Xiang, Bin ^{[1
]}

Yang, Lihua ^{[1
]}

Zhang, Qun ^{[3
]}

Lee, Zonghoon ^{[4
,5
]}

Wu, Xiaojun ^{[1
]}

Ruoff, Rodney S. ^{[4
,6
,7
]}

Zhu, Yanwu ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Dept Mat Sci & Engn, Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

[2] Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 689798, South Korea

[3] Univ Sci & Technol China, Dept Chem Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[4] Ulsan Natl Inst Sci & Technol, Ctr Multidimens Carbon Mat, Ulsan 689798, South Korea

[5] Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 689798, South Korea

[6] Ulsan Natl Inst Sci & Technol, Dept Chem, Ulsan 689798, South Korea

[7] Ulsan Natl Inst Sci & Technol, Sch Mat Sci, Ulsan 689798, South Korea

来源：

SMALL | 2015年 / 11卷 / 39期

关键词：

C-60; catalyst; graphene oxide; graphene quantum dots; photoluminescence; EXFOLIATED GRAPHITE OXIDE; AQUEOUS DISPERSIONS; CARBON NANOTUBES; DENSITY; LUMINESCENCE; BLUE; SIZE; NANOPARTICLES; NANORIBBON; MONOLAYER;

D O I：

10.1002/smll.201501611

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

The large-scale synthesis of graphene-oxide-like quantum dots (GOLQDs) is reported by oxidizing C-60 molecules using a modified Hummers method with a yield of approximate to 25 wt% readily achieved. The GOLQDs are highly soluble in water and in addition to hexagons have other carbon rings in the structure. They have an average height of approximate to 1.2 nm and a diameter distribution of 0.6-2.2 nm after drying on substrates. First-principle calculations indicate that a possible rupturing route may include the insertion of oxygen atoms to CC bonds in the C-60 molecule, followed by rupture of that CC bonds. The GOLQD suspension has a strong photoluminescence (PL) with peak position dependent on excitation wavelength. The PL is related to the size and emissive traps caused by oxygen-containing groups. The GOLQDs also catalyze the oxidation of benzyl alcohol with a high selectivity.

引用

页码：5296 / 5304

页数：9

共 62 条

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Materials science - Oxygen breaks into carbon world [J].