One-pot synthesis of flower-like SnS2/SnO2 heterojunction with enhanced visible light photocatalytic performance

Bi2O4 decorated with SnO2 nanoparticles as direct Z‐scheme heterojunction for enhanced degradation of tetracycline under visible light irradiation

“…The increase in electron density of Bi 2 O 4 as well as the decreased electron density of SnO 2 suggest that an interfacial interaction occurs between SnO 2 and Bi 2 O 4 , which facilitates the rapid migration of electrons and subsequently efficient separation of photogenerated carriers. 30,51 Thus XPS results indirectly validate the successful construction of the SnO 2 /Bi 2 O 4 heterojunction.…”

“…Thus the decreased binding energy of Bi 4f suggests an increased electron density on Bi 2 O 4 , and the increase in binding energy of Sn 3d indicates a decreased electron density on SnO 2 . The increase in electron density of Bi 2 O 4 as well as the decreased electron density of SnO 2 suggest that an interfacial interaction occurs between SnO 2 and Bi 2 O 4 , which facilitates the rapid migration of electrons and subsequently efficient separation of photogenerated carriers 30,51 . Thus XPS results indirectly validate the successful construction of the SnO 2 /Bi 2 O 4 heterojunction.…”

“…Tin dioxide (SnO 2 ) is an important n‐type semiconductor with the characteristics of low cost, nontoxicity and high stability. It has been extensively applied in multiple fields, such as gas‐sensitive components, optoelectronic devices, solar cells and photocatalysis 28‐31 . Nevertheless, SnO 2 presents weak activity due to a wide band gap of 3.5–4.0 eV and low separation efficiency of electron–hole pairs 31 .…”

“…It has been extensively applied in multiple fields, such as gassensitive components, optoelectronic devices, solar cells and photocatalysis. [28][29][30][31] Nevertheless, SnO 2 presents weak activity due to a wide band gap of 3.5-4.0 eV and low separation efficiency of electron-hole pairs. 31 Combining SnO 2 with other semiconductors to form a heterojunction is an alternative to overcome these drawbacks.…”

Engineering crystal planes and band structure of 2D tin sulfide nanosheets and investigating their photocatalytic degradation performance

“…These advantages make tin disulfide a promising visible light photocatalyst for the photocatalytic degradation of organic dyes. [30][31][32] More importantly, SnS 2 has a typical hexagonal morphology and presents an ''S-Sn-S'' sandwich-type molecular structure. S and Sn in layers are connected by chemical bonds, and the interlayer is only combined by weak van der Waals force, which is conducive to increasing the dispersion and self-assembly of SnS 2 into different morphologies.…”