Photochemical CO2 hydrogenation to carbon nanotubes and H2O for oxygen recovery in space exploration

被引：0

作者：

Wang, Jun ^{[1
,2
]}

Wang, Jiajia ^{[3
]}

Feng, Jianyong ^{[1
,2
]}

Hu, Yingfei ^{[1
]}

Huang, Huiting ^{[2
]}

Zhang, Ningsi ^{[2
]}

Zhao, Minyue ^{[2
]}

Liu, Wangxi ^{[1
,2
]}

Liu, Changhao ^{[2
]}

Zhu, Zhi ^{[1
]}

Yan, Shicheng ^{[2
]}

Yu, Tao ^{[1
]}

Zhang, Ce ^{[4
]}

Yao, Wei ^{[4
]}

Zou, Zhigang ^{[1
,2
]}

Li, Zhaosheng ^{[1
,2
]}

机构：

[1] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Sch Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Coll Engn & Appl Sci, Jiangsu Key Lab Nano Technol, Nanjing 210093, Peoples R China

[3] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Peoples R China

[4] China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China

来源：

JOULE | 2024年 / 8卷 / 11期

基金：

中国国家自然科学基金;

关键词：

GENERALIZED GRADIENT APPROXIMATION; COBALT; SURFACES; INSIGHT; ATOMS;

D O I：

10.1016/j.joule.2024.08.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The primary source of oxygen in space exploration is derived from water electrolysis. Herein, we discovered a mild photochemical hydrogenation process that can convert CO2 into carbon nanotubes (CNTs) and H2O by using a Co-based catalyst. Hence, astronauts can extract oxygen from CO2 metabolism to close the oxygen recycling loop (overall reaction: CO2- C + O2), allowing for '100% theoretical oxygen recovery. This photochemical technique has enabled a high turnover number (the molar ratio of C to Co) of 240 for CNT formation during a 100 h reaction in a flow reactor. The oxygen recovery efficiency reaches approximately 68% when using flowing CO2 and H2, surpassing the theoretical maximum (50%) for the Sabatier reaction combined with water electrolysis at the International Space Station. The tip-growth mode of CNTs principally allows long-term oxygen recovery from CO2, in addition to space manufacturing of CNTs.

引用

页码：3126 / 3141

页数：17

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