Journal ArticleDOI
Facile synthesis of fluorescent graphene quantum dots from coffee grounds for bioimaging and sensing
TLDR
In this article, a novel eco-friendly approach involving hydrazine hydrate-assisted hydrothermal cutting followed by functionalization with poly (ethylene imine) (PEI) for fabricating highly fluorescent graphene quantum dots from coffee grounds was developed.About:
This article is published in Chemical Engineering Journal.The article was published on 2016-09-15. It has received 196 citations till now. The article focuses on the topics: Graphene & Quantum dot.read more
Citations
More filters
Journal ArticleDOI
Green synthesis, biomedical and biotechnological applications of carbon and graphene quantum dots. A review
TL;DR: Green methods for the fabrication of quantum dots, and biomedical and biotechnological applications are reviewed.
Journal ArticleDOI
Green synthesis of highly fluorescent carbon quantum dots from sugarcane bagasse pulp
S. Thambiraj,D. Ravi Shankaran +1 more
TL;DR: In this article, a simple and efficient method for the green synthesis of fluorescent carbon quantum dots (CQDs) from sugarcane bagasse, a renewable and sustainable resource, was developed.
Journal ArticleDOI
Biomass-waste derived graphene quantum dots and their applications
TL;DR: In this paper, a review on the conversion of biomass-waste into GQDs through a number of facile, low cost and scalable routes is presented, and the remaining challenges, future perspectives and possible research directions in the field are presented.
Journal ArticleDOI
Electro-spinning of cellulose acetate nanofibers/Fe/carbon dot as photoluminescence sensor for mercury (II) and lead (II) ions.
TL;DR: A novel magnetic nano-fibers as a rapid test sensor for detecting of mercury(II) and lead(II), and results show reduction in PL intensity by enhancing of toxic heavy metal ions.
Journal ArticleDOI
A review of carbon quantum dots and their applications in wastewater treatment.
TL;DR: The physical and chemical properties of C QDs, raw materials and methods used in the fabrication of CQDs, the stability of CZDs as well as their potential applications in wastewater treatment and biomedical field are discussed.
References
More filters
Journal ArticleDOI
Highly Photoluminescent Carbon Dots for Multicolor Patterning, Sensors, and Bioimaging
Shoujun Zhu,Qingnan Meng,Lei Wang,Junhu Zhang,Yubin Song,Han Jin,Kai Zhang,Hongchen Sun,Hai-Yu Wang,Bai Yang +9 more
TL;DR: A facile and highoutput strategy for the fabrication of CDs, which is suitable for industrial-scale production and is almost equal to fluorescent dyes, is discussed.
Journal ArticleDOI
Hydrothermal route for cutting graphene sheets into blue-luminescent graphene quantum dots
TL;DR: This work reports on a novel and simple hydrothermal approach for the cutting of GSs into surface-functionalized GQDs, which were found to exhibit bright blue photoluminescence (PL), which has never been observed in GSs and GNRs owing to their large lateral sizes.
Journal ArticleDOI
Graphene quantum dots derived from carbon fibers.
Juan Peng,Wei Gao,Bipin Kumar Gupta,Bipin Kumar Gupta,Zheng Liu,Rebeca Romero-Aburto,Rebeca Romero-Aburto,Liehui Ge,Li Song,Lawrence B. Alemany,Xiaobo Zhan,Guanhui Gao,Guanhui Gao,Sajna Antony Vithayathil,Benny Abraham Kaipparettu,Angel A. Martí,Takuya Hayashi,Jun-Jie Zhu,Pulickel M. Ajayan +18 more
TL;DR: It is reported that during the acid treatment and chemical exfoliation of traditional pitch-based carbon fibers, that are both cheap and commercially available, the stacked graphitic submicrometer domains of the fibers are easily broken down, leading to the creation of GQDs with different size distribution in scalable amounts.
Journal ArticleDOI
Solution-processed, high-performance light-emitting diodes based on quantum dots
Xingliang Dai,Zhenxing Zhang,Yizheng Jin,Yuan Niu,Hujia Cao,Xiaoyong Liang,Liwei Chen,Jianpu Wang,Xiaogang Peng +8 more
TL;DR: This optoelectronic performance is achieved by inserting an insulating layer between the quantum dot layer and the oxide electron-transport layer to optimize charge balance in the device and preserve the superior emissive properties of the quantum dots.
Journal ArticleDOI
Blue luminescent graphene quantum dots and graphene oxide prepared by tuning the carbonization degree of citric acid
Yongqiang Dong,Jingwei Shao,Congqiang Chen,Hao Li,Ruixue Wang,Yuwu Chi,Xiaomei Lin,Guonan Chen +7 more
TL;DR: An easy bottom-up method for the preparation of photoluminescent (PL) graphene quantum dots (GQDs) and graphene oxide (GO) has been developed by tuning the carbonization degree of citric acid and dispersing the carbonized products into alkaline solutions as mentioned in this paper.
Related Papers (5)
Hydrothermal route for cutting graphene sheets into blue-luminescent graphene quantum dots
Graphene quantum dots derived from carbon fibers.
Juan Peng,Wei Gao,Bipin Kumar Gupta,Bipin Kumar Gupta,Zheng Liu,Rebeca Romero-Aburto,Rebeca Romero-Aburto,Liehui Ge,Li Song,Lawrence B. Alemany,Xiaobo Zhan,Guanhui Gao,Guanhui Gao,Sajna Antony Vithayathil,Benny Abraham Kaipparettu,Angel A. Martí,Takuya Hayashi,Jun-Jie Zhu,Pulickel M. Ajayan +18 more