A novel CuSbS2–TiO2 nanoparticles synergy structure for photocatalysis

Abstract

In this work, a synergy structure to improve the photocatalytic properties of materials was proposed. CuSbS 2 nanoparticles synthesized by microwave irradiation method were dispersed in TiO 2 sol to form CuSbS 2-TiO 2 nanoparticles. The properties of composite materials with different TiO 2 sol concentration were investigated by XRD, XPS, etc. The results indicated the as-synthesized CuSbS 2 nanoparticles exhibited chalcostibite structure and the TiO 2 showed anatase phase. The CuSbS 2-TiO 2 nanoparticles had high absorbance in the visible light and good photocatalysts for the photodegradation reaction of Rhodamine B (RhB). When TiO 2 sol concentration was 0.23 mol/L, the sample possessed a photocatalytic degradation rate of 0.002 min −1 for the degradation of RhB, which was 3 times higher than that by the bare amorphous TiO 2 (0.0007 min −1).

Influence of sulfur source on properties of CuSbS2 particles

“…The diameter of rod-like particle is about 300 nm. It can be calculated that the crystal plane spacing is 0.131 nm, which corresponds to the (410) crystal plane of CuSbS 2 [20]. Figure 3(e) shows the TEM image of CuSbS 2 particles prepared with 3-mercaptopropionic acid as the sulfur source.…”

Heterojunction Engineering of Multinary Metal Sulfide‐Based Photocatalysts for Efficient Photocatalytic Hydrogen Evolution

“…[ 320 ] Moreover, the CuSbS 2 ‐based type‐II heterojunction photocatalyst CuSbS 2 /TiO 2 has been successfully designed and applied to photodegradation of rhodamine B. [ 321 ] Future development of CuSbS 2 ‐based heterojunction photocatalysts will expand the category of MMSs and decrease the fabrication cost. High STE efficiency depends on high electronic dimensionality, for which 3D crystal structure is the prerequisite.…”

Photocatalytic Hydrogen Evolution Using Ternary‐Metal‐Sulfide/TiO2 Heterojunction Photocatalysts

“…[91] The type II CuSbS 2 /TiO 2 heterojunction has also been used for the photodegradation of rhodamine B. [92] Therefore, the development of CuSbS 2 /TiO 2 heterojunction photocatalysts can guide the selection of low-cost elements to fabricate TMS/TiO 2 photocatalysts with potentially very high photoactivity and enable large-scale applications. (ii) High density active sites.…”