The preparation of waste biomass-derived N-doped carbons and their application in acid gas removal: focus on N functional groups,Journal of Materials Chemistry A

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The preparation of waste biomass-derived N-doped carbons and their application in acid gas removal: focus on N functional groups
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-10-23 , DOI: 10.1039/d0ta07977d
Dan Li _{1,

2,

3,

4} , Wenhua Chen _{1,

2,

3,

4,

5} , Jianping Wu _{1,

2,

3,

4} , Charles Qiang Jia _{6,

7,

8,

9} , Xia Jiang _{1,

2,

3,

4,

5}

Affiliation

N-doped biochars (NPCs) derived from waste biomass are promising materials for the removal of acid gases, while waste biomass is a cheap and sustainable resource. Also, the incorporation of nitrogen (N), especially N-groups in the carbon lattice, has a positive effect on acid gas removal. The doped N improves the basicity of carbon surfaces and forms superoxide radicals, thus enhancing the adsorption and catalytic performance of carbon materials. However, the acid gas removal performance of NPCs is closely related to the resultant N functionalities. Understanding the mechanism of N incorporation is beneficial for the design of NPCs with outstanding performance. In this paper, the preparation of NPCs derived from waste biomass and their application in acid gas removal (i.e., CO₂, H₂S, SO₂, and NO_x) are reviewed. The N species on the NPC surfaces, the effects of synthesis strategies on N configuration and N content, and related N-doping mechanisms are summarized and discussed. Moreover, the application in acid gas treatment of waste biomass-based NPCs is presented in detail. Finally, we propose a prospective investigation into the application of waste biomass-derived NPCs in the acid gas removal and catalysis fields.

中文翻译：

废生物质衍生的氮掺杂碳的制备及其在酸性气体去除中的应用：关注N官能团

源自废物生物质的N掺杂生物炭（NPC）是用于去除酸性气体的有前途的材料，而废物生物质是一种廉价且可持续的资源。而且，在碳晶格中掺入氮（N），尤其是N-基团，对酸性气体的去除具有积极作用。掺杂的N改善了碳表面的碱度并形成了超氧自由基，从而增强了碳材料的吸附和催化性能。但是，NPC的酸性气体去除性能与所得N功能密切相关。理解氮的掺入机理对设计具有优异性能的NPC有利。本文研究了废物生物质衍生的NPCs的制备及其在酸性气体脱除中的应用（即CO ₂，H_评论了2 S，SO₂和NO_x）。总结和讨论了NPC表面的N种类，合成策略对N构型和N含量的影响以及相关的N掺杂机理。此外，详细介绍了在基于废物生物质的NPC的酸性气体处理中的应用。最后，我们提出了对源自废物生物质的NPC在酸性气体去除和催化领域中的应用的前瞻性研究。

更新日期：2020-11-23

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