Enhanced photoelectrocatalytic performance for degradation of dimethyl phthalate over well-designed 3D hierarchical TiO2/Ti photoelectrode coupled dual heterojunctions

Zhang, Pan1; Gu, Xiaotong1; Qin, Ning3,4; Hu, Yiqiong1; Wang, Xuejiang2; Zhang, Ya-nan1

2023-01-05

10.1016/j.jhazmat.2022.129896

JOURNAL OF HAZARDOUS MATERIALS   Impact Factor & Quartile

0304-3894

1873-3336

A novel A/R-TiO2 NSs/NRs photoelectrode was constructed through electrodeposition of anatase TiO2 nanosheets (A-TiO2 NSs) with highly exposed {001} facet onto the 1D upright rutile TiO2 nanorods (R-TiO2 NRs). At first, A/R-TiO2 NSs/NRs exhibited enhanced adsorption of dimethyl phthalate (DMP) due to the specific recognition between Lewis acid sites of {001} facet and Lewis basic DMP. NH3-TPD and Py-IR revealed that the Lewis acidity on the {001} facet of A-TiO2 NSs was much stronger than that of R-TiO2 NRs, demonstrating superior adsorption capacity to DMP. DFT theoretical calculations coupled with in-situ ATR-FTIR spectra were performed to investigate the binding adsorption behavior of DMP on A/R-TiO2 NSs/NRs. Secondly, the rapid separation of excited charges and strong oxidation of h(+) were achieved by the synergistic effect of dual heterojunctions (A/R "phase heterojunction " and {111}/{110} "facet heterojunction "). The A/R-TiO2 NSs/NRs exhibited 100% degradation efficiency for the target pollutant DMP within 3 h, whose rate constant (k) was 18.02 x 10(-3) min(-1), 2.16 times that of pure R-TiO2 NRs. In real wastewater application, A/R-TiO2 NSs/NRs achieved 93.8% elimination of DMP during 4 h and preserved excellent stability after 5 cycles, promising a wide-range of applications in water environment remediation.

Dimethyl phthalate Photoelectrocatalytic A/R-TiO2 NSs/NRs Specific adsorption Dual heterojunctions

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English

Others

National Natural Science Foundation of China (NSFC)[21876133] ; Natural Science Foundation of Shanghai[20ZR1462500] ; Science & Technology Commission of Shanghai Municipality[14DZ2261100] ; Fundamental Research Funds for the Central Universities["22120210531","2022-4-YB-1B"]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000856005700001

ELSEVIER

ENGINEERING

Web of Science

1.Tongji Univ, Sch Chem Sci & Engn, Key Lab Yangtze River Water Environm, Shanghai Key Lab Chem Assessment & Sustainabil, Shanghai 200092, Peoples R China
2.Tongji Univ, Shanghai Inst Pollut Control & Ecol Secur, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China
3.City Univ Hong Kong, Dept Mech Engn, Kowloon, 83 Tat Chee Ave, Hong Kong, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Zhang, Pan,Gu, Xiaotong,Qin, Ning,et al. Enhanced photoelectrocatalytic performance for degradation of dimethyl phthalate over well-designed 3D hierarchical TiO2/Ti photoelectrode coupled dual heterojunctions[J]. JOURNAL OF HAZARDOUS MATERIALS,2023,441.

Zhang, Pan,Gu, Xiaotong,Qin, Ning,Hu, Yiqiong,Wang, Xuejiang,&Zhang, Ya-nan.(2023).Enhanced photoelectrocatalytic performance for degradation of dimethyl phthalate over well-designed 3D hierarchical TiO2/Ti photoelectrode coupled dual heterojunctions.JOURNAL OF HAZARDOUS MATERIALS,441.

Zhang, Pan,et al."Enhanced photoelectrocatalytic performance for degradation of dimethyl phthalate over well-designed 3D hierarchical TiO2/Ti photoelectrode coupled dual heterojunctions".JOURNAL OF HAZARDOUS MATERIALS 441(2023).