Facile fabrication of g‐C₃N₄/MIL‐53(Al) composite with enhanced photocatalytic activities under visible‐light irradiation

Abstract

A novel visible-light-driven g-C 3 N 4 /MIL-53(Al) composite photocatalyst was successfully prepared using a facile stirring method at room temperature. The g-C 3 N 4 /MIL-53(Al) composites were characterized and their effects on the photocatalytic activities for rhodamine B degradation were investigated. The g-C 3 N 4 (20 wt%)/MIL-53(Al) photocatalyst displayed optimal photocatalytic degradation efficiency, which was about five times higher than the photocatalytic activity of pure g-C 3 N 4 . The improved photocatalytic performance of the g-C 3 N 4 /MIL-53(Al) photocatalyst was predominantly attributed to the efficient separation of electron-hole pairs and the low charge-transfer resistance. g-C 3 N 4 /MIL-53(Al) also exhibited excellent stability and reusability. A proposed mechanism for the enhanced photocatalytic activity is also discussed based on the experimental results.

Ag3PO4/CoFe2O4 magnetic nanocomposite: synthesis, characterization and applications in catalytic reduction of nitrophenols and sunlight-assisted photocatalytic degradation of organic dye pollutants

“…12. [60][61][62][63][64] Under irradiation with sunlight, both CoFe 2 O 4 and the Ag 3 PO 4 can absorb the photon energy and produce the electron-hole pairs (eqn (3) to form active oxidants such as hydroxyl radicals (cOH) (eqn (4)). …”

Facile fabrication of BUC‐21/g‐C3N4 composites and their enhanced photocatalytic Cr(VI) reduction performances under simulated sunlight

“…There is a strong emission peak at ca 440 nm in the parental g‐C 3 N 4 PL spectrum, which decreased significantly once it was combined with BUC‐21 to fabricate B100G100, implying that B100G100 can maintain the longest lifetime of photon‐generated electrons and holes . It was shown in detail that the formation of BUC‐21 and g‐C 3 N 4 heterostructures could validly improve the separation efficiency of the carriers and thus prolonged the lifetime of the carriers, which is beneficial for improving the photocatalytic activity of BUC‐21/g‐C 3 N 4 composites …”

“…Therefore, some researches have focused on the combination of g‐C 3 N 4 and MOF materials to improve the photocatalytic efficiency considering MOFs can transfer photoelectrons rapidly as a result of their metal nodes. Some composites like MIL‐53(Al)/g‐C 3 N 4 , g‐C 3 N 4 /MIL‐53(Fe), MIL‐125(Ti)/g‐C 3 N 4 and ZIF‐8(Zn)/g‐C 3 N 4 were prepared for the degradation of organics and effective reduction of Cr(VI). BUC‐21 is a chemically stable two‐dimensional MOF synthesized by our group, which exhibits superior photocatalytic performance under UV light irradiation towards Cr(VI) reduction and organic decomposition .…”

Improvement of capacitance activity for Cu‐doped Ni‐based metal–organic frameworks by adding potassium hexacyanoferrate into KOH electrolyte

“…[1] Because of their tailorable structure and functionality, high porosity and large internal surface area and multi-site electrochemical activity, MOFs have great potential in a variety of applications, such as gas storage, [2] separation, [3] catalysis, [4] sensors [5][6][7] and electrochemistry. [1] Because of their tailorable structure and functionality, high porosity and large internal surface area and multi-site electrochemical activity, MOFs have great potential in a variety of applications, such as gas storage, [2] separation, [3] catalysis, [4] sensors [5][6][7] and electrochemistry.…”