Polypyrrole-Reinforced N,S-Doping Graphene Foam for Efficient Solar Purification of Wastewater

Lifen Su, Yuying Ning, Ziqiang Ma, Yuhao Zhang, Chuanlei Liu, Youli Zhang, Lei Miao, Jianhua Zhou, Bin Wu, Jiasheng Qian

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Solar vapor generation is a sustainable and cost-effective approach to addressing the issue of water shortage. However, the challenges of solar steam generation still exist for achieving a high evaporation efficiency combined with long-term stability in the wastewater containing heavy metal ions and wide degrees of acidity and alkalinity (pH = 1–14). Herein, polypyrrole (PPy) loading on the N,S-doped graphene oxide (N,S-GO) foam is used for high-efficiency solar evaporation of treating wastewater. With the advantages of excellent broadband solar absorption (>97%), extremely low emissivity (0.70), and outstanding hydrophilicity, the N,S-GO/PPy foam achieves a high evaporation efficiency of 90.5% under 1 sun illumination. More notably, the N,S-GO/PPy foam has strong adsorption of heavy metal ions (Fe3+, Cu2+, and Cr6+) for treating wastewater synchronously evaporates at higher efficiencies of 94.7–98.4%. Interestingly, the high-toxicity Cr6+ can be reduced to low-toxicity Cr3+ effectively by the synergistic effect of N,S-GO and PPy. In addition, the N,S-GO foam shows a better long-term resistance of acidity and alkalinity for 45 days. A new insight is offered into high-efficiency solar evaporation for treating wastewater and water purification.

本文言語English
論文番号2100210
ジャーナルSolar RRL
5
7
DOI
出版ステータスPublished - 2021 7
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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