Details

Autor(en) / Beteiligte

• Wu, Yuanyuan
• Dang, Chenyang
• Wu, Jun
• Li, Mengli
• Chu, Mingming
• Gu, Li
• Cao, Xuebo

Titel

A photothermal system for wastewater disposal and co-generation of clean water and electricity

Ist Teil von

• Journal of environmental chemical engineering, 2022-02, Vol.10 (1), p.107124, Article 107124

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Since energy crisis and water shortage become critical issues in increasingly industrialized society, solar-assisted water disposal technologies remain a great challenge. This work investigated solar-driven photothermal disposal of wastewater for simultaneous production of clean water and electricity. This strategy relies on an integrated photothermal and photoelectric film composed of Ag/TiO2 nanoparticles grafted on the surface of carbon nanotubes (CNTs) coated with nickel foam (NF) substrate (Ag/TiO2@CNTs@NF). The long-wavelength portion in the solar spectrum was employed for high-quality freshwater generation via solar-driven interfacial evaporation (water evaporation rate at 1.48 kg m−2 h−1), with a solar-to-water evaporation efficiency of ~96%. The short-wavelength bands were adsorbed for the simultaneous solar-driven oxidation of organic pollutants (oxidation efficiency to methylene blue of ~94.2%) and the generation of electricity (photocurrent of ~228 μA cm−2). Therefore, this integrated system can dispose wastewater while achieve pure water and electricity with high utilization efficiency for solar energy. [Display omitted] •A photothermal wastewater disposal system is designed.•The wastewater disposal system co-generates freshwater and electricity.•The wastewater disposal system efficiently utilizes full solar spectrum.