Effect of Physico-Chemical Properties Induced by N, P Co-Doped Biomass Porous Carbon on Nitrous Oxide Adsorption Performance

Xiyue Gong, Zheng Liu (), Jingxian Mou and Jiaying Wang
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Xiyue Gong: School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Zheng Liu: School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Jingxian Mou: School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
Jiaying Wang: School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China

Sustainability, 2024, vol. 16, issue 10, 1-15

Abstract: The adsorption and enrichment of greenhouse gases on biomass porous carbon is a promising approach. Herein, a simple type of nitrogen and phosphorus co-doped biomass porous carbon (NPPC), which was derived from fast-growing eucalyptus bark, was reported via one-step method of carbonization and activation, and the nitrous oxide (N 2 O) adsorption performance and the adsorption mechanism of the NPPCs were also investigated. The results showed that NPPC-800-2 demonstrated a high specific surface area (1038.48 m 2 ∙g −1 ), abundant micropores (0.31 cm 3 ∙g −1 ), and enriched content of N and P (4.17 wt.% and 0.62 wt.%), which also exhibited a high N 2 O adsorption capacity of 0.839 mmol∙g −1 . Moreover, the addition of N enhanced the surface polarity of carbon, thereby altering its pore structure. And P doping induced changes in the structural orientation of carbon, resulting in an increased presence of N-P functional groups. This finding reveals that the eucalyptus bark-based N and P co-doped porous carbon shows great potential for wide applications in N 2 O capture and provides effective guidance for the design and development of waste biomass adsorbent.

Keywords: porous carbon; N, P co-doped; N 2 O; adsorption (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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