Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (1): 225-234.DOI: 10.1016/S1872-2067(20)63615-4
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Yang Chena, Guobing Maoa, Yawen Tanga, Heng Wua, Gang Wanga, Li Zhangb,*(), Qi Liua,#()
Received:
2020-03-19
Accepted:
2020-05-04
Online:
2021-01-18
Published:
2021-01-18
Contact:
Li Zhang,Qi Liu
About author:
#Tel: +86-553-2871738; E-mail: modieer_67@ahpu.edu.cnSupported by:
Yang Chen, Guobing Mao, Yawen Tang, Heng Wu, Gang Wang, Li Zhang, Qi Liu. Synthesis of core-shell nanostructured Cr2O3/C@TiO2 for photocatalytic hydrogen production[J]. Chinese Journal of Catalysis, 2021, 42(1): 225-234.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63615-4
Fig. 3. (a) X-ray diffraction patterns of prepared samples: diffraction peak positions of (b) (101) plane of TiO2 in the 2θ range of 24.5°-26° and (c) Cr2O3 in the 2θ range of 33°-37°.
Fig. 4. (a and b) Scanning and (c) transmission electron micrographs of MT500; inset of (c) high-resolution transmission electron micrograph of MT500. (d) Scanning transmission electron micrograph and (e, f, g, and h) Cr, Ti, O, and C energy-dispersive X-ray spectroscopy mappings, respectively, of MT500.
Fig. 7. (a) Rate of H2 production and (b) time evolution of photocatalytic H2 production over synthesized photocatalyst samples under the irradiation of a 300 W Xe arc lamp. (c) Cyclic H2 production over MT500 photocatalyst. (d) Time evolution of H2 production over prepared photocatalyst samples under visible light (λ > 420 nm) irradiation.
Fig. 8. (a) Photocurrent density at 0.4 V vs. Ag/AgCl under 300 W Xe arc lamp irradiation. (b) Electrochemical impendence spectra Nyquist plots and (c) photoluminescence spectra of pristine TiO2, MT, and MT500.
Fig. 9. Proposed mechanism for photocatalytic H2 production via water splitting over Cr2O3/C@TiO2 composite. Here NHE denotes the normal hydrogen electrode.
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