Caimei Fan

Ni doping broadens the pH response range and accelerates the electron transfer rate, so that Fe_1−xNi_xS/sulfite can remove RhB through the synergistic effect of free radical and non-free radical paths under different pH conditions.

Resourceful utilization of coal gasification fine slag (CGFS), a typical coal-based solid waste, has always been a trial and challenge in solid waste treatment. In developing its utilization value, fewer steps and lower energy consumption during treatment are more favorable. Herein, CGFS was modified by combining BiOBr to develop its possible application in the photocatalytic degradation of organic pollutants. The BiOBr/CGFS photocatalysts were synthesized at ambient temperature by a simple hydrolysis method with zero pre-treatment of CGFS. The synthesized composites show improved effective photocatalytic performance in the degradation of organic pollutant and the BOB/CGFS₂₀ showed the best activity, which can remove 89.3% of phenol within 90 minutes, 84.53% of sulfamethoxazole within 75 minutes and 84.96% of bisphenol A within 120 minutes. Moreover, the components in CGFS that may play a positive role were investigated and the results showed that CGFS acted as a carrier, and most likely, the carbon materials and metal oxides such as Fe₂O₃ and/or TiO₂ in it led to the improvement of the quantum efficiency of BiOBr and further promoted the photocatalytic performance. This study aims to provide some references and inspiration for the utilization of CGFS and environmental protection.

NiRu–Mo₂Ti₂C₃O₂ promotes smooth *OH migration and facilitates desorption at Ni sites, thus accelerating overall Volmer kinetics.

A kind of novel BiOBr/BiVO₄ Z-scheme heterojunction composite film is in situ synthesized on Bi substrates via the electrochemical ion-exchange method, and the composite film exhibits excellent photocatalytic CO₂ to CO reduction activity.

The efficient alkaline hydrogen evolution reaction on Ru_S–Mo₂Ti₂C₃O₂is achieved by the synergistic effect of Mo₂Ti₂C₃O₂and atomic state Ru.

This work affords a practical surface hydroxylation method to improve the intrinsic photoelectrochemical performance of BiVO₄photoanodes.

Using liquid water as a proton source could greatly improve the economy of photocatalytic ammonia synthesis and environmental protection. However, the commonly used powder dispersion diphase system (liquid–solid) is seriously hindered by the scarce N₂ supply and the waste of photothermal energy. Here, a triphase reaction system (gas–solid–liquid) was constructed through a bismuth/carbon cloth (Bi/CC) float, which was self-supported on liquid water and directly exposed to a N₂-gas atmosphere. Assisted by the plentiful N₂ capture and efficient use of the photothermal effect of the CC for N₂ co-activation, this Bi/CC float triphase system breaks the N₂ concentration-dependent limitation in the traditional diphase system and exhibited a photothermal temperature (T)-dependent characteristic. A higher ammonia yield of 2.85 mmol L⁻¹ h⁻¹ g⁻¹ in the Bi/CC triphase system was achieved compared to that of 0.70 mmol L⁻¹ h⁻¹ g⁻¹ in a diphase system. Moreover, this triphase system also exhibited good stability and sunlight-driven feasibility, showing a real possibility for practical application in photocatalytic ammonia synthesis.