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889 results on '"Xue, Huaiguo"'

49. Spatial Confinement Engineered Gel Composite Evaporators for Efficient Solar Steam Generation.

Author

Yan, Jun, Cui, Tao, Su, Qin, Wu, Haidi, Xiao, Wei, Ye, Liping, Hou, Suyang, Xue, Huaiguo, Shi, Yongqian, Tang, Longcheng, Song, Pingan, and Gao, Jiefeng

Subjects
OSMOTIC pressure, WATER supply, AEROGELS, EVAPORATORS, HYDROGELS, SALINE water conversion
Abstract

Recently, solar‐driven interfacial evaporation (SDIE) has been developed quickly for low‐cost and sustainable seawater desalination, but addressing the conflict between a high evaporation rate and salt rejection during SDIE is still challenging. Here, a spatial confinement strategy is proposed to prepare the gel composite solar evaporator (SCE) by loading one thin hydrogel layer onto the skeleton of a carbon aerogel. The SCE retains the hierarchically porous structure of carbon aerogels with an optimized water supply induced by dual‐driven forces (capillary effects and osmotic pressure) and takes advantage of both aerogels and hydrogels, which can gain energy from air and reduce water enthalpy. The SCE has a high evaporation rate (up to 4.23 kg m−2 h−1 under one sun) and excellent salt rejection performance and can maintain structural integrity after long‐term evaporation even at high salinities. The SDIE behavior, including heat distribution, water transport, and salt ion distribution, is investigated by combining theoretical simulations and experimental results. This work provides new inspiration and a theoretical basis for the development of high‐performance interfacial evaporators. [ABSTRACT FROM AUTHOR]

Published
2024
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50. Enhanced Capacitive Deionization of Hollow Mesoporous Carbon Spheres/MOFs Derived Nanocomposites by Interface‐Coating and Space‐Encapsulating Design.

Author

Tang, Yijian, Shi, Yuxin, Su, Yichun, Cao, Shuai, Hu, Jinliang, Zhou, Huijie, Sun, Yangyang, Liu, Zheng, Zhang, Songtao, Xue, Huaiguo, and Pang, Huan

Subjects
CARBON-based materials, CHARGE transfer, WASTE recycling, ADSORPTION capacity, COPPER
Abstract

Exploring new carbon‐based electrode materials is quite necessary for enhancing capacitive deionization (CDI). Here, hollow mesoporous carbon spheres (HMCSs)/metal‐organic frameworks (MOFs) derived carbon materials (NC(M)/HMCSs and NC(M)@HMCSs) are successfully prepared by interface‐coating and space‐encapsulating design, respectively. The obtained NC(M)/HMCSs and NC(M)@HMCSs possess a hierarchical hollow nanoarchitecture with abundant nitrogen doping, high specific surface area, and abundant meso‐/microporous pores. These merits are conducive to rapid ion diffusion and charge transfer during the adsorption process. Compared to NC(M)/HMCSs, NC(M)@HMCSs exhibit superior electrochemical performance due to their better utilization of the internal space of hollow carbon, forming an interconnected 3D framework. In addition, the introduction of Ni ions is more conducive to the synergistic effect between ZIF(M)‐derived carbon and N‐doped carbon shell compared with other ions (Mn, Co, Cu ions). The resultant Ni‐1‐800‐based CDI device exhibits excellent salt adsorption capacity (SAC, 37.82 mg g−1) and good recyclability. This will provide a new direction for the MOF nanoparticle‐driven assembly strategy and the application of hierarchical hollow carbon nanoarchitecture to CDI. [ABSTRACT FROM AUTHOR]

Published
2024
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