Tian Yanpei

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Last Name
Tian
First Name
Yanpei
ORCID
0000-0003-4181-9517

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  • Article
    Farm-waste-derived recyclable photothermal evaporator
    (Cell Press, 2021-08-20) Tian, Yanpei ; Liu, Xiaojie ; Li, Jiansheng ; Deng, Yichen ; DeGiorgis, Joseph A. ; Zhou, Shiyu ; Caratenuto, Andrew ; Minus, Marilyn L. ; Wan, Yinsheng ; Xiao, Gang ; Zheng, Yi
    Interfacial solar steam generation is emerging as a promising technique for efficient desalination. Although increasing efforts have been made, challenges exist for achieving a balance among a plethora of performance indicators—for example, rapid evaporation, durability, low-cost deployment, and salt rejection. Here, we demonstrate that carbonized manure can convert 98% of sunlight into heat, and the strong capillarity of porous carbon fibers networks pumps sufficient water to evaporation interfaces. Salt diffusion within microchannels enables quick salt drainage to the bulk seawater to prevent salt accumulation. With these advantages, this biomass-derived evaporator is demonstrated to feature a high evaporation rate of 2.81 kg m−2 h−1 under 1 sun with broad robustness to acidity and alkalinity. These advantages, together with facial deployment, offer an approach for converting farm waste to energy with high efficiency and easy implementation, which is particularly well suited for developing regions.
  • Article
    Environmentally friendly and efficient hornet nest envelope-based photothermal absorbers
    (American Chemical Society, 2021-12-07) Xie, Lijia ; Liu, Xiaojie ; Caratenuto, Andrew ; Tian, Yanpei ; Chen, Fangqi ; DeGiorgis, Joseph A. ; Wan, Yinsheng ; Zheng, Yi
    Water shortage is a critical global issue that threatens human health, environmental sustainability, and the preservation of Earth’s climate. Desalination from seawater and sewage is a promising avenue for alleviating this stress. In this work, we use the hornet nest envelope material to fabricate a biomass-based photothermal absorber as part of a desalination isolation system. This system realizes an evaporation rate of 3.98 kg m–2 h–1 under one-sun illumination, with prolonged evaporation rates all above 4 kg m–2 h–1. This system demonstrates a strong performance of 3.86 kg m–2 h–1 in 3.5 wt % saltwater, illustrating its effectiveness in evaporation seawater. Thus, with its excellent evaporation rate, great salt rejection ability, and easy fabrication approach, the hornet nest envelope constitutes a promising natural material for solar water treatment applications.