干旱区生态环境知识资源中心(Arid): Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting

Arid

DOI	10.1007/s11595-023-2782-5
	Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting
	Zhang, Shangsheng; Xu, Shuman; Lei, Ruicheng; Pan, Yuliang; Ma, Tao; Zhang, Zheng; Liu, Chunsheng; Zhang, Zengzhi
通讯作者	Zhang, ZZ
来源期刊	JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
ISSN	1000-2413
EISSN	1993-0437
出版年	2023
卷号	38 期号:5 页码:951-959
英文摘要	A one-step ultrasonic mechanical method was used to synthesize a kind of atmospheric water harvesting material with high water harvesting performance in a wide relative humidity (RH) range, especially at low RH (RH < 40%), namely, mesoporous silica capsule (MSC) with core-shell structure. Transmission electron microscopy (TEM), nitrogen adsorption and other characterization techniques were used to study the formation process of nano-microspheres. A new mechanism of self-adaptive concentration gradient regulation of silicon migration and recombination core-shell structure was proposed to explain the formation of a cavity in the MSC system. The core-shell design can enhance the specific surface area and pore volume while maintaining the monodispersity and mesoporous size. To study the water harvesting performance of MSC, solid silica nanoparticles (SSN) and mesoporous silica nanoparticles (MSN) were prepared. In a small atmospheric water collection test (25 degrees C, 40% RH), the water vapour adsorption and desorption kinetics of MSC, SSN, MSN and a commercial silica gel (CSG) were compared and analyzed. The results show that the MSC with mesoporous channels and core-shell structure can provide about 0.324 g(water)/g(adsorbent), 79% higher than the CSG(0.181 g(water) /g(adsorbent)). It is 25.1% higher than that of 0.259 g(water) /g(adsorbent) of un-hollowed MSN and 980% higher than that of 0.03 g(water) /g(adsorbent) of un-hollowed SSN. The material has a large specific surface area and pore volume, simple preparation method and low cost, which provides a feasible idea for realising atmospheric water collection in arid and semi-arid regions.
英文关键词	mesoporous silica nanocapsules core-shell structure atmospheric water harvesting adsorption performance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001104902000031
WOS关键词	NANOPARTICLES ; COLLECTION ; ADSORPTION
WOS类目	Materials Science, Multidisciplinary
WOS研究方向	Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397614
推荐引用方式 GB/T 7714	Zhang, Shangsheng,Xu, Shuman,Lei, Ruicheng,et al. Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting[J],2023,38(5):951-959.
APA	Zhang, Shangsheng.,Xu, Shuman.,Lei, Ruicheng.,Pan, Yuliang.,Ma, Tao.,...&Zhang, Zengzhi.(2023).Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting.JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,38(5),951-959.
MLA	Zhang, Shangsheng,et al."Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting".JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 38.5(2023):951-959.