Mesoporous N-doped carbon derived from tea waste for high-performance CO2 capture and conversion. (March 2020)

• Record Type: Journal Article
• Authors: Tao, Duan-Jian; Mao, Fei-Feng; Luo, Jing-Jing; Zhou, Yan; Li, Zhang-Min; Zhang, Liqi
• Is Part Of: Materials today communications. Volume 22(2020)
• Publication Date: 2020-03
• Subjects: Tea waste -- Carbonization -- N-Doped carbon -- CO2 capture -- Cycloaddition; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2019.100849
• Languages: English
• ISSNs: 2352-4928

Abstract

Graphical abstract: Highlights: N-doped carbon materials were prepared via one-step carbonization of tea waste. TW-derived carbon materials exhibited moderate CO2 capacities. TW-derived carbon materials had high catalytic activities for cycloaddition of CO2 . Abstract: It is of great importance to develop cost-effective materials for large-scale use in CO2 capture and conversion. Herein, mesoporous N-doped carbon materials were prepared by one-step carbonization of tea waste (TW) in the absence of any other additives, and used as a class of bio-friendly adsorbents for CO2 capture and conversion. It is demonstrated that the as-prepared TW-derived N-doped carbon exhibit moderate CO2 adsorption capacities under 1 bar. They also display high activity for catalyzing the cycloaddition of CO2 with epoxides under mild conditions (e.g., 1 bar, 100 °C, and 8 h). Systematic characterizations prove that TW-900 shows moderate specific surface areas and superhydrophobicity feature, which are responsible for its high performance for CO2 capture and conversion. The direct carbonization of TW offers a facile and environmentally friendly route to N-doped carbon materials for CO2 capture and fixation.