TY - JOUR
T1 - Polypyrrole-Reinforced N,S-Doping Graphene Foam for Efficient Solar Purification of Wastewater
AU - Su, Lifen
AU - Ning, Yuying
AU - Ma, Ziqiang
AU - Zhang, Yuhao
AU - Liu, Chuanlei
AU - Zhang, Youli
AU - Miao, Lei
AU - Zhou, Jianhua
AU - Wu, Bin
AU - Qian, Jiasheng
N1 - Funding Information:
This work was funded by Guangxi Natural Science Foundation of China (grant no. AD19245177), and jointly sponsored by Guangxi Key Laboratory of Information Materials (Guilin University of Electronic Technology), China (project no. 201008‐K).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/7
Y1 - 2021/7
N2 - 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.
AB - 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.
KW - heavy metal ions
KW - polypyrrole
KW - solar evaporation
KW - stabilities
KW - wastewater
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U2 - 10.1002/solr.202100210
DO - 10.1002/solr.202100210
M3 - Article
AN - SCOPUS:85106301575
VL - 5
JO - Solar RRL
JF - Solar RRL
SN - 2367-198X
IS - 7
M1 - 2100210
ER -