Large-Scale and Controllable Synthesis of Graphene Quantum Dots from Rice Husk Biomass: A Comprehensive Utilization Strategy

被引:252
作者
Wang, Zhaofeng [1 ]
Yu, Jingfang [2 ]
Zhang, Xin [1 ,4 ]
Li, Na [5 ]
Liu, Bin [5 ]
Li, Yanyan [6 ]
Wang, Yuhua [6 ]
Wang, Weixing [7 ]
Li, Yezhou [1 ]
Zhang, Lichun [1 ]
Dissanayake, Shanka [3 ]
Suib, Steven L. [1 ,3 ]
Sun, Luyi [1 ,2 ]
机构
[1] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Biomol & Chem Engn, Storrs, CT 06269 USA
[3] Univ Connecticut, Dept Chem, Storrs, CT 06269 USA
[4] Guangdong Univ Technol, Dept Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China
[5] Lanzhou Univ, Sch Stomatol, Lanzhou 730000, Peoples R China
[6] Lanzhou Univ, Dept Mat Sci, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
[7] S China Univ Technol, Minist Educ, Key Lab Enhanced Heat Transfer & Energy Conservat, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, Peoples R China
基金
美国国家科学基金会;
关键词
rice husks; graphene quantum dots; comprehensive utilization; biocompatibility; cell imaging; SILICA NANOPARTICLES; ENERGY; CARBON; PHOTOLUMINESCENCE; CATALYSIS; WASTE; BLUE;
D O I
10.1021/acsami.5b10660
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, rice husk biomass was utilized as an abundant source to controllably prepare high-quality graphene quantum dots (GQDs) with a yield of ca. 15 wt %. The size, morphology, and structure of the rice-husk-derived GQDs were determined by high-resolution transmission electron microscopy, atomic force microscopy, and Raman spectroscopy. The as-fabricated GQDs can be stably dispersed in water, exhibiting bright and tunable photoluminescence. A cell viability test further confirmed that the GQDs possess excellent biocompatibility, and they can be easily adopted for cell imaging via a facile translocation into the cytoplasm. It is worth noting that mesoporous silica nanoparticles were also synthesized as a byproduct during the fabrication of GQDs. As such, our strategy achieves a comprehensive utilization of rice husks, exhibiting tremendous benefits on both the economy and environment.
引用
收藏
页码:1434 / 1439
页数:6
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