Influence of solvent in solvothermal synthesis of Cu3SnS4: Morphology and band gap dependant electrocatalytic hydrogen evolution reaction and photocatalytic dye degradation

Remarkable Improvement of Thermoelectric Performance in Ga and Te Cointroduced Cu3SnS4

“…The direct band gap ( E g ) of ∼1.0 eV for CTS and the Fermi level ( E F ) of ∼0.6 eV below the VBM are clearly shown in Figure a. In spite of the smaller E g value than those reported (1.35–1.76 eV), , it is a little higher than 10κ B T (∼0.7 eV). , Upon the residing of Ga at the Cu site, both the valence band (VB) and conduction band (CB) near E F drop and get degenerate at the Γ point, see the band structures with dotted red circles in Figure a,b. However, the lowering of VB is not as pronounced as that of CB, similar to the cases observed in n-type I–III–VI 2 chalcopyrite semiconductors and Cu 2+ x Zn 1– x SnS 4 systems, which is attributed to the active hybridization between Sn 5s and S 3p orbitals in CB, see attached DOS in Figures b and S6.…”

“…Ternary sulfide Cu 3 SnS 4 (CTS) compound is a typical degenerate p-type semiconductor with a band gap of 1.0–1.8 eV. − The pristine CTS with the multivalence of Cu or hole trapping shows a high carrier concentration of ∼10 22 cm –3 at room temperature (RT). − In recent years, the CTS compound has received much interest in photocatalytic and gas sensing applications owing to its wider thermodynamic stability window, , nontoxicity, earth-abundance, and availability of the constituent elements. However, only limited studies have been devoted to its application in thermoelectrics (TE). , …”

Controllability study of copper‐tin‐sulphide (Cu3SnS4) material based on the ratio adjustment of Cu to Sn elements

“…To investigate the effect of Ag doping on the thermoelectric properties of CTS, Lohani, Nautiyal [5] synthesize various Cu 2 Ag (x) Sn (1−x) S 3 (0.05 ≤ x ≤ 0.25) samples by mechanical alloying followed by spark plasma sintering, and their structural and transport properties were systematically investigated. Chemical methods include: spray pyrolysis [2,[46][47][48][49][50], continuous ion layer adsorption and reaction [51,52], sealed tube solid state reaction [53], solution method [54][55][56], hot injection method [57][58][59], template synthesis method [60,61], the solvothermal method [30,32,35,[62][63][64][65][66][67][68][69], microwave method [70,71], liquid phase reflux method [72,73], chemical bath deposition method [74] etc. Nouri, Hartiti [6] synthesize high-quality CTS films with tetragonal dominant phase and morphological homogeneity by a spray pyrolysis method at 30 and 45 min of spraying solution with appropriate optoelectrical properties for solar PV applications.…”

3D/0D Cu3SnS4/CeO2 Heterojunction Photocatalyst with Dual Redox Pairs Synergistically Promotes the Photocatalytic Reduction of CO2

“…Currently, bimetallic sulfides with variable chemical composition and rich metal active sites have received extensive attention in the sulfide family, such as ZnIn 2 S 4 , CuInS 2 and so on, but due to the low abundance of indium element in the Earth and the high preparation cost of indium-containing compounds, researchers focus on the alternative bimetallic sulfide, which is economical and harmless to human health. Kuramite (Cu 3 SnS 4 ), with low toxicity, excellent light absorption performance, and thermoelectric stability, has obtained the wide application in terms of photocatalysis, not only in photocatalytic degradation of organic dyes, , photocatalytic hydrogen production, − but also in photocatalytic CO 2 reduction. The CH 4 yield of single-phase orthorhombic Cu 3 SnS 4 prepared by Sharma et al reached 14 μ mol/g h –1 under simulated sunlight, and Wang et al dexterously constructed S vacancy to produce Cu + and Sn 2+ on Cu 3 SnS 4 , which simultaneously improved the adsorption capacity and electron reduction capacity of CO 2 .…”