Interfacial solar-driven steam and electricity co-generation using Hydrangea-like graphene by salt-assisted carbonization of waste polylactic acid
- Indexed by:Journal paper
- First Author:Huiyue Wang
- Correspondence Author:Jiang Gong
- Co-author:Xueying Wen,Kuankuan Liu,Qiuxuan Liu,Guixin Hu,Huajian Liu,Jie Liu,Yan She,Ran Niu,Tao Tang
- Journal:SusMat
- Included Journals:SCI
- Volume:4
- Page Number:e242
- Key Words:graphene; polylactic acid; solar evaporator; solar-driven interfacial steam generation; water evaporation–driven power generation
- DOI number:10.1002/sus2.242
- Date of Publication:2024-09-23
- Impact Factor:18.7
- Abstract:The interfacial solar steam generation and water evaporation–driven power generation are regarded as promising strategies to address energy crisis. However, it remains challenging to construct low-cost evaporators for freshwater and electricity co-generation. Herein, we report a salt-assisted carbonization strategy of waste polylactic acid to prepare Hydrangea flower–like graphene and build a bi-functional graphene-based evaporator. The evaporator presents merits of good sunlight absorption, photo-to-thermal conversion property, water transport, good thermal management capability, and negatively charged pores for the continuous diffusion of ions. Hence, it achieves the evaporation rate of 3.0 kg m−2 h−1 and output voltage of 0.425 V, surpassing many advanced evaporators/generators. Molecular dynamics simulation result proves that more Na+ ions are attracted by functional groups, especially –COOH/C–OH, to promote Na+ selectivity in nanochannels. This work offers new opportunities to construct multifunctional evaporators for freshwater and electricity co-generation.
- Links to published journals:https://doi.org/10.1002/sus2.242
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