Title : Synergistic Cu single-atoms and clusters on tubular carbon nitride for efficient photocatalytic performances

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Title of Paper:Synergistic Cu single-atoms and clusters on tubular carbon nitride for efficient photocatalytic performances

Journal:Rare Metals

Place of Publication:Springer

Key Words:Carbon Nitride, Photocatalysis, Cu single-atom, Sulfamethazine, degradation

Abstract:Metal clusters or even single-atoms dispersed and anchored on the photocatalysts’ surface can enhance photocatalytic performances on organic pollutant oxidation. Here, a simple photoreduction method was used to create atomically dispersed metal single-atoms/clusters (MSCs, M = Cu, Pd, Au, and Ag) on P-modulated tubular carbon nitride (TCN). Excellent photocatalytic performances were demonstrated by the obtained MSCs@TCN for the degradation of sulfamethazine (SMZ). In particular, the photocatalyst with 2 wt% Cu loading showed ultrahigh SMZ oxidation efficiency (k = 0.06110 min−1), almost three times that of TCN (k = 0.02066 min−1). It also shows excellent stability in 5th-cycle measurements. The improved photocatalytic activity of the CuSCs@TCN is ascribed to the synergistic promotion of photogenerated charge separation by Cu single-atoms and clusters as active sites, accelerated charge transfer from bulk TCN to Cu atoms through Cu-Nx interaction. Meanwhile, the active sites of Cu single-atoms/clusters could promote the production of ∙O2−, which participates in organic oxidation with strong-oxidizing holes (h+). This strategy paves a new avenue for designing high-performance photocatalysts decorated with metal single-atoms and clusters.

All the Authors:Tianguang Lu,Ziye Zheng,Shuang Tian,Li Xiang,Shan Zhao,Shuguang Wang

First Author:Yuxiao Feng

Indexed by:Journal paper

Correspondence Author:Huijun Yu,Zuoli He

Discipline:Engineering

Document Type:J

Number of Words:6000

Translation or Not:no

Date of Publication:2024-07-01

Included Journals:SCI