Chinese Journal of Catalysis ›› 2023, Vol. 51: 124-134.DOI: 10.1016/S1872-2067(23)64475-4
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Fei Yana,b, Youzi Zhanga,b, Sibi Liua,b, Ruiqing Zoua,b, Jahan B Ghasemic,*(), Xuanhua Lia,b,*()
Received:
2023-05-04
Accepted:
2023-06-20
Online:
2023-08-18
Published:
2023-09-11
Contact:
*E-mail: lixh32@nwpu.edu.cn (X. Li), jahan.ghasemi@ut.ac.ir (J. B Ghasemi).
Supported by:
Fei Yan, Youzi Zhang, Sibi Liu, Ruiqing Zou, Jahan B Ghasemi, Xuanhua Li. Efficient charge separation by a donor-acceptor system integrating dibenzothiophene into a porphyrin-based metal-organic framework for enhanced photocatalytic hydrogen evolution[J]. Chinese Journal of Catalysis, 2023, 51: 124-134.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(23)64475-4
Scheme 1. Schematic illustration of the structure of TCPP-Zn-BTDO and TCPP-Zn and photocatalytic hydrogen production with Pt nanoparticles as cocatalysts.
Fig. 2. (a) UV-vis DRS spectra and charge transfer (CT) transitions. (b) UV-vis DRS spectra of TCPP-Zn-BTDO, and solar spectrum. (c) Room-temperature PL emission spectra of TCPP Zn-BTDO and TCPP-Zn. (d) PL decay traces of TCPP-Zn-BTDO and TCPP-Zn. (e) Photocurrent response of TCPP-Zn-BTDO and TCPP-Zn. (f) Electrochemical impedance spectroscopy Nyquist plots of TCPP-Zn-BTDO and TCPP-Zn.
Fig. 3. (a) Surface photovoltage intensity of TCPP-Zn-BTDO and TCPP-Zn. (b) The surface charge density of TCPP Zn-BTDO and TCPP-Zn. (c) IEF intensities of TCPP-Zn-BTDO and TCPP-Zn. (d) Diagrams of electron distribution and molecular dipoles of TCPP, BTDO, and TCPP-Zn-BTDO. The results were calculated by DFT, PBE0 functional, and def2-SVP basis set.
Fig. 4. (a) Comparison of hydrogen evolution rate of TCPP-Zn-BTDO and TCPP-Zn under the full spectrum of light. Reaction conditions: 5.0 mg photocatalyst, 3.0 wt% Pt as a cocatalyst, and 50 mL of ascorbic acid solution. (b) Comparison of the H2 evolution rate of TCPP-Zn-BTDO with other D-A bicomponent systems. (c) Overlayer of UV-vis absorption and AQY for TCPP-Zn-BTDO. (d) Overlayer UV-Vis absorption and wavelength-dependent hydrogen evolution of TCPP-Zn-BTDO.
Fig. 5. (a) Tauc plots of TCPP-Zn-BTDO and TCPP-Zn. (b) Mott-Schottky plots of TCPP-Zn. (c) Mott-Schottky plots of TCPP-Zn-BTDO. (d) Redox potentials of TCPP-Zn-BTDO and TCPP-Zn.
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