A reduced graphene oxide supported Cu3SnS4 composite as an efficient visible-light photocatalyst

Abstract

In this study, a visible light responsive Cu3SnS4/reduced graphene oxide (RGO) photocatalyst has been synthesized by a facile one-step solvothermal method. The as-synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, N2 adsorption-desorption, UV-vis diffuse reflectance spectra (DRS), and photoluminescence (PL) emission spectroscopy. The photocatalytic activity of the Cu3SnS4/RGO composite under visible-light irradiation (λ > 420 nm) was evaluated by measuring the degradation of rhodamine B (RhB) and phenol. The results revealed that the Cu3SnS4 nanoplates dispersed uniformly on the RGO surface. The Cu3SnS4/RGO composite exhibited much higher photocatalytic activity than pure Cu3SnS4. The enhancement in photocatalytic activity is likely to be due to the synergistic effect of an improved adsorptivity of pollutants, an enhanced visible light absorption and an effective charge separation. In addition, the Cu3SnS4/RGO photocatalyst was stable during the reaction and could be used repeatedly.

Graphene oxide: A promising nanomaterial for energy and environmental applications

“…The GO/Ag 3 PO 4 composite also exhibited efficient photodegradation of RhB and bisphenol A (Figure 15c and d) [322]. Additionally, combination of RGO with β-SnWO 4 increases the degradation efficiency of MO (from 55% to 90%) and RhB (from 60% to 91%), as compared to β-SnWO 4 alone [323].…”

“…Various organic containments can be simultaneously removed via GO-based composites [320][321][322][323][324]. Both GO/ Ag 3 PO 4 [320] and GO/TiO 2 /Ag nanocomposites [321] showed substantial photocatalytic activities in degradation of organic dye and phenol under visible light irradiation.…”

Single‐Phase Cu3SnS4 Nanoparticles for Robust High Capacity Lithium‐Ion Battery Anodes

“…The NPs are irregular shaped as seen from SEM and TEM with size in the range of 5-10 nm. [26,27] The satellite peak at 942.9 eV is also the signature of Cu 2 + valence. The PXRD and RAMAN confirm the phase purity of the material and the related detailed discussion is provided in our previous paper.…”

“…The XPS reveals that the Cu 2p 3/2 at 932.5 eV and Cu 2p 1/2 at 952.2 eV correspond to Cu 1 + whereas the peaks at 934.6 eV and 953 eV of the respective core levels indicate presence of Cu 2 + in Cu 3 SnS 4 . [26,27] The satellite peak at 942.9 eV is also the signature of Cu 2 + valence. Sn also exhibits two oxidation states with Sn 3d 5/2 at 487.6 eV and Sn 3d 3/2 at 496 eV elucidating Sn 4 + and the peaks at 486.7 eV and 495 eV assigned to Sn 2 + .…”

Effect of Copper Content on Structural, Morphological, Optical and Photoelectrochemical Properties of SILAR Deposited Cu3SnS4 Thin Films

“…In particular, copper-based CuxSnSy, including Cu2SnS3, Cu3SnS4, Cu4SnS4, Cu2Sn3S7, Cu5Sn2S7, etc., is an ideal candidate material for solar cell and photocatalysis applications, owing to its high photocatalytic activities towards hydrogen evolution, high absorption coefficient (>10 4 cm -1 ) in the visible spectral range and proper band gap order (0.93 to 1.35 eV). [3][4][5][6] Currently Cu3SnS4 (CTS) based ternary semiconductors have grown more interest as significant ternary I-IV-VI group semiconductor with diminutive or mid band gap. Eco-friendly, low cost and non-toxic nature of CTS similar to that of CZTS material has fascinated immense attention due to their wide-ranging applications in photovoltaic devices.…”