TY  - EJOU
AU  - Qiu, Junxiao 
AU  - Liu, Sanmei 

TI  - Constructing TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/Single-Walled Carbon Nanotube Hydrogel for Synergistic Solar Evaporation and Photocatalytic Organic Pollutant
T2  - Journal of Polymer Materials

PY  - 2024
VL  - 41
IS  - 4
SN  - 0976-3449

AB  - Integration of solar-driven interfacial evaporation and photocatalysis is one of the most promising technologies for generating fresh water and removing pollutants. In this work, TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> photocatalysis is loaded on a hydrogel containing single-walled carbon nanotube (SWCNT). Due to the excellent water evaporation channel of hydrogel and the excellent photothermal conversion performance of SWCNT, as well as the good visible light absorption ability of TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>, TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/SWCNT hydrogel exhibits good hydrothermal evaporation and photocatalytic activity. The optimum water evaporation rate of 1.43 kg m<sup>−2</sup> h<sup>−1</sup>. In particular, the optimized TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/SWCNT hydrogel can also remove more than 90% methylene blue (MB) within 120 min. Moreover, the TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/SWCNT hydrogel shows good photocatalytic stability after five cycles. Furthermore, the radical trapping experiment is also performed. The photogenerated ·O<sub>2</sub><sup>−</sup> and ·OH<sup>−</sup> plays a critical role in MB degradation. This work will provide guidance for the rational design of multifunctional photothermal materials. TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/SWCNT hydrogel presents a promising methodology to boost practical applications for seawater desalination and sewage purification.
KW  - Interfacial evaporation; photocatalysis; TiO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>/SWCNT hydrogel; methylene blue

DO  - 10.32604/jpm.2024.057951