Phase-dependent photocatalytic H₂evolution of copper zinc tin sulfide under visible light

Abstract

CZTS exhibited apparently phase-dependent photocatalytic H2 evolution under visible light. Possible factors for the phase-dependent photocatalytic activity of CZTS were discussed in detail.

Sn2SiS4, synthesis, structure, optical and electronic properties

“…Among them, In 4 Pb x Sn y Se 3 is a promising mid-temperature thermoelectric material candidate [6]; Ba 7 Sn 5 S 15 demonstrates the coexistence of Sn 2 S 3 trigonal-bipyramids and SnS 4 tetrahedra and shows a strong SHG effect [5]; Ba 6 Sn 6 Se 13 has mixed valent Sn 2+ and Sn 4+ cations in 3-fold, 4-fold, and 5-fold coordination environments respectively and shows a moderate NLO effect [7]. In the meanwhile, Cu 2 ZnSnS 4 , Cu 2 FeSnS 4 and Ag 2 ZnSnS 4 have attracted great interest for their photovoltaic and H 2 production performance [11][12][13][14][15][16].…”

Synthesis of High‐Quality Wurtzite Cu2ZnSn(S1−x,Sex)4 Nanocrystals With Non‐Toxic Selenium Precursor and the Photoelectrochemical Performance of ZnO NAs/CZTSSe Heterojunction

“…With the increasingly serious energy crisis, developing high efficient and low‐cost energy transformation materials have been gained extensive attention, which efficiently convert solar energy into other forms of energy. On account of high absorption coefficient (>10 4 cm −1 ), tunable bandgap (1.0–1.6 eV) and low‐cost elements components, Cu 2 ZnSn(S 1 −x Se x ) 4 (CZTSSe) (0 ≤ x ≤ 1) is regarded as a potential candidate material for the absorbed layer of the solar cells, counter electrode of DSSC, and photocatalysis . During the last decade, a great number of approaches have been demonstrated to be effective for the fabrication of high efficiency CZTSSe solar cells .…”

Multifunctional Copper‐Based Quaternary Chalcogenide Semiconductors Toward State‐of‐the‐Art Energy Applications

“…The composition dependent properties demand more detailed and comprehensive study. Not just stoichiometry but the phase dependence of photocatalytic activity of CZTS is apparent as reported by Chang et al . On the comparative study among wurtzite, mixed wurtzite‐kesterite and kesterite phases of CZTS, kesterite phase showed better photocatalytic hydrogen evolution efficiency.…”

“…On the comparative study among wurtzite, mixed wurtzite‐kesterite and kesterite phases of CZTS, kesterite phase showed better photocatalytic hydrogen evolution efficiency. The more dispersive nature of VB and CB of kesterite as comparted to wurtzite indicate smaller effective masses of electrons and holes in former imparting higher electron and hole movement abilities resulting into highest H 2 evolution abilities . Also the imbalanced surface atoms in (112) planes in kesterite phase as compared to slightly more stable (001) planes in wurtzite phase allows more efficient adsorption of H + and S 2− on the surface in reaction medium subsequently enhance H 2 evolution in Na 2 S‐Na 2 SO 3 system.…”