Publications by authors named "Xiu Qiao"

Article Synopsis
  • Covalent organic frameworks (COFs) are emerging as innovative photocatalysts for visible-light-driven hydrogen production, yet comprehensive water-splitting systems using COFs remain limited.
  • This research combines two different COFs, TpBpy-COF and COF-316, to create a heterojunction system designed for efficient overall water splitting, with each COF contributing to hydrogen and oxygen evolution.
  • The introduction of ultra-small platinum nanoparticles into the system significantly enhances hydrogen and oxygen production rates, while studies indicate that the unique interface created between the COFs effectively improves the separation and transfer of photogenerated charge carriers.
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Directly converting CO in flue gas using artificial photosynthetic technology represents a promising green approach for CO resource utilization. However, it remains a great challenge to achieve efficient reduction of CO from flue gas due to the decreased activity of photocatalysts in diluted CO atmosphere. Herein, we designed and synthesized a series of dual metallosalen-based covalent organic frameworks (MM-Salen-COFs, M: Zn, Ni, Cu) for artificial photosynthetic diluted CO reduction and confirmed their advantage in comparison to that of single metal M-Salen-COFs.

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Herein, step-scheme (S-scheme) CuBi2O4/CuO (CBO/CuO) composite films were successfully synthesized on glass substrates by the ultra-fast spraying-calcination method. The photocatalytic activities of the obtained materials for CO2 reduction in the presence of H2O vapor were evaluated under visible light irradiation (λ > 400 nm). Benefiting from the construction of S-scheme heterojunction, the CO, CH4 and O2 yields of the optimal CBO/CuO composite reached 1599.

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Photocatalysis of dye degradation is one of green and cheap technologies for solving environmental pollution. Whereas it is rarely concerned that the degradation process varied with the change of solution condition, this work studied the influence of hydrion in the solution on the photodegradation process of Rhodamine B (RhB) over g-CN. The photocatalytic activity of RhB degradation was enhanced gradually with increased hydrion content in the system.

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