Microwave-assisted ultrafast in-situ growth of N-doped carbon quantum dots on multiwalled carbon nanotubes as an efficient electrocatalyst for photovoltaics
- Authors
- Ali, Mumtaz; Riaz, Rabia; Anjum, Aima Sameen; Sun, Kyung Chul; Li, Hui; Ahn, SeJin; Jeong, Sung Hoon; Ko, Min Jae
- Issue Date
- Mar-2021
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Keywords
- Metal-free catalyst; Surface modification; Counter electrodes; Dye-sensitized solar cells
- Citation
- JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.586, pp.349 - 361
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF COLLOID AND INTERFACE SCIENCE
- Volume
- 586
- Start Page
- 349
- End Page
- 361
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1549
- DOI
- 10.1016/j.jcis.2020.10.098
- ISSN
- 0021-9797
- Abstract
- Multiwalled carbon nanotubes (MWCNTs) are at the forefront of metal-free electrocatalysts, however, the performance is still limited due to lack of functionality and dispersion. Coupling of MWCNTs with nitrogen doped carbon quantum dots (NCQDs) can impart the required active sites and dispersion. For the purpose, NCQDs are generally attached to MWCNTs by multistep processing, such as NCQDs synthesis, followed by their complex purification, surface activation, and crosslinking with MWCNT. The scalability of such a multistep process is limited, which is addressed by direct microwave-assisted growth of NCQDs on MWCNT. The concentration of reactants of NCQDs synthesis was optimized (with respect to MWCNTs), to achieve controlled direct growth of NCQDs on MWCNTs. The proposed strategy significantly reduced time and energy consumption, along with providing an overlapped interface for the fast charge transfer. Moreover, NCQDs' growth effectively modulated the surface reactivity and internal band structure of the MWCNTs. In response, dye-sensitized solar cells employing NCQDs modified MWCNT as a counter electrode showed 50% higher photovoltaic performance as compared to bare MWCNTs.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 화학공학과 > 1. Journal Articles
- 서울 공과대학 > 서울 유기나노공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1549)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.