Massive water production from lunar ilmenite through reaction with endogenous hydrogen  

作　　者：Xiao Chen Shiyu Yang Guoxin Chen Wei Xu Lijian Song Ao Li Hangboce Yin Weixing Xia Meng Gao Ming Li Haichen Wu Junfeng Cui Lei Zhang Lijing Miao Xiaoxue Shui Weiping Xie Peiling Ke Yongjiang Huang Jianfei Sun Bingnan Yao Min Ji Mingliang Xiang Yan Zhang Shaofan Zhao Wei Yao Zhigang Zou Mengfei Yang Weihua Wang Juntao Huo Jun-Qiang Wang Haiyang Bai 

机构地区：[1]Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Center of Test and Analysis,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China [4]School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [5]Qian Xuesen Laboratory of Space Technology,China Academy of Space Technology(CAST),Beijing 100049,China [6]College of Engineering and Applied Science,Nanjing University,Nanjing 210093,China [7]Institute of Physics,Chinese Academy of Sciences,Beijing 100049,China [8]Songshan Lake Materials Laboratory,Dongguan 523830,China

出　　处：《The Innovation》2024年第5期47-53,46,共8页创新（英文）

基　　金：Financial support from the National Key R&D Program of China(2018YFA0703600);the National Natural Science Foundation of China(NSFC 52222105,51922102,92163108,61888102,and 51827801);the Youth Innovation Promotion Association CAS(2019296);the Zhejiang Provincial Natural Science Foundation of China(LZ22A030001 and LR22E010004);the Ningbo 2025 Science and Technology Innovation Project is acknowledged.

摘　　要：Finding water resources is a crucial objective of lunar missions.However,both hydroxyl(OH)and natural water(H2O)have been reported to be scarce on the Moon.We propose a potential method for obtaining water on the Moon through H2O formation via endogenous reactions in lunar regolith(LR),specifically through the reaction FeO/Fe2O3+H/Fe+H2O.This process is demonstrated using LR samples brought back by the Chang’E-5 mission.FeO and Fe2O3 are lunar minerals containing Fe oxides.Hydrogen(H)retained in lunar minerals from the solar wind can be used to produce water.The results of this study reveal that 51–76 mg of H2O can be generated from 1 g of LR after melting at temperatures above 1,200 K.This amount is10,000 times the naturally occurring OH and H2O on the Moon.Among the five primary minerals in LR returned by the Chang’E-5 mission,FeTiO3 ilmenite contains the highest amount of H,owing to its unique lattice structure with sub-nanometer tunnels.For the first time,in situ heating experiments using a transmission electron microscope reveal the concurrent formation of Fe crystals and H2O bubbles.Electron irradiation promotes the endogenous redox reaction,which is helpful for understanding the distribution of OH on the Moon.Our findings suggest that the hydrogen retained in LR is a significant resource for obtaining H2O on the Moon,which is helpful for establishing a scientific research station on the Moon.

关 键 词：establishing ENDOGENOUS HYDROGEN 

分 类 号：O64[理学—物理化学]