Novel Ti3C2Tx MXene wrapped wood sponges for fast cleanup of crude oil spills by outstanding Joule heating and photothermal effect

• Published in: Journal of colloid and interface science Vol. 606; no. Pt 2; pp. 971 - 982
• Main Authors: Wang, Pei-Lin, Ma, Chang, Yuan, Qi, Mai, Tian, Ma, Ming-Guo
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 15.01.2022
• Subjects: absorbents; adsorption; compressibility; Crude oil spills; desalination; electric potential difference; heat; hydrophobicity; hypersalinity; irradiation; Joule heat; lighting; lipophilicity; MXene; petroleum; Photothermal effect; remediation; surface temperature; viscosity; wood; Wood sponge; Wood sponge; Photothermal effect; Joule heat; Crude oil spills; MXene
• ISSN: 0021-9797; 1095-7103; 1095-7103
• DOI: 10.1016/j.jcis.2021.08.092

The porous polydimethylsiloxane@wood sponge/MXene (PDMS@WSM) with satisfactory compressibility and hydrophobic/lipophilic ability was demonstrated as crude oil absorbent. Due to the excellent Joule heating and photothermal conversion effect, the PDMS@WSM displayed maximum adsorption capacity of 11.2×105 g m−3 within 6 min. [Display omitted] •PDMS@WSM with excellent Joule-heat and photothermal effect for cleanup of crude oil.•Aligned channel structure with low tortuosity enhanced the oil absorption efficiency.•The compressibility of PDMS@WSM promoted reusability and cycle stability.•PDMS@WSM displayed maximum adsorption capacity of 11.2×105 g m−3 within 6 min.•The crude oil can be continuously collected based on PDMS@WSM and discharged by compression. Remediation of crude oil spills is a great challenge owing to the poor mobility and high viscosity of crude oil. Herein, a porous polydimethylsiloxane@wood sponge/MXene (PDMS@WSM) with outstanding compressibility and hydrophobic/lipophilic ability was demonstrated as crude oil absorbent. The surface temperature of PDMS@WSM could quickly rise to 80 °C with a working voltage of 4 V and to 66 °C under simulated sunlight irradiation of 1.5 KW m−2, respectively. Due to the excellent Joule heating and photothermal conversion effect, the PDMS@WSM displayed maximum adsorption capacity of 11.2×105 g m−3 within 6 min. The PDMS@WSM showed preferable reusability and cycle stability because of its brilliant compressibility. Moreover, the oil-collecting device based on PDMS@WSM could continuously collect crude oil spills, achieving an active collection of 25 mL crude oil within 150 s. Therefore, the porous PDMS@WSM absorbent exhibited great potential for crude oil spills remediation, energy regulation, and desalination of hypersaline water.