Hierarchical microspheres: in situ assembly of CdS quantum dots on Cd₂SnO₄ nanosheets with enhanced visible light photocatalytic properties

Abstract

Hierarchical CdS/Cd2SnO4 microspheres with enhanced photocatalytic activity were successfully synthesized by one step solvothermal route.

Oxygen vacancy and doping atom effect on electronic structure and optical properties of Cd2SnO4

“…Using the GGA+U method, the calculated band gap value of Cd 2 SnO 4 is 2.22 eV, which is in good accordance with the experimental band gap of the Cd 2 SnO 4 (E g ¼ 2.3-2.5 eV). 38,39 Thus, the theoretical value agrees well with the experimental data and the selected U values are reasonable. Fig.…”

Selective capturing of phenolic derivative by a binary metal oxide microcubes for its detection

“…The major two exact peaks in XPS spectra for Sn3d orbit in the sample of SnO 2 /CdO MCs and these are similar in nature, which clarified the similar oxidation state of Sn in the prepared materials. The binding energy for Sn3d 5/2 and Sn3d 3/2 corresponds to 485.08 and 494.08 eV and these are complied with oxidation Sn 4+ in SnO 2 42,43 . The data are illustrated in Fig.…”

Worm-like porous and defect-structured cadmium stannate photoanodes for enhanced solar water oxidation

“…The dominant band at $639 cm À1 is assigned to the symmetric and asymmetric modes of the Sn-O bonds of cubic Cd 2 SnO 4 , in good accordance with the documented literature data, implying that there are no unidentiable impurities in the samples. 8,21,22 The specic surface area and porosity were characterized by using nitrogen adsorption and desorption isotherms, as shown in Fig. 3b.…”

“…What's more, most of the reports on conventional bulk solid-state synthesis of Cd 2 SnO 4 have underlined the presence of impurity phases, such as SnO 2 and CdO along with a fraction of CdSnO 3 . 4,5 Various synthetic methodologies have thus been developed for construction of Cd 2 SnO 4 , such as sol-gel methods, 6 solution combustion, 7 hydrothermal reactions, 8,9 molten salt methods, 10 chemical vapor deposition, 11 spray pyrolysis, 12,13 and radio frequency sputtering 1,2 . For example, Ogale and co-workers studied solution combustion synthesis of a cubic Cd 2 SnO 4 phase at 750 C, which exhibited a photocurrent density roughly 2.5 times higher than that of the orthorhombic one at 1050 C. 14 To accelerate the thermal reaction kinetics, Preethi et al employed eutectic NaCl/KCl mixture salts to prepare cubic and orthorhombic Cd 2 SnO 4 microcrystals at 900 C for 15 min and 6 h, respectively.…”

“…Various synthetic methodologies have thus been developed for construction of Cd 2 SnO 4 , such as sol–gel methods, 6 solution combustion, 7 hydrothermal reactions, 8,9 molten salt methods, 10 chemical vapor deposition, 11 spray pyrolysis, 12,13 and radio frequency sputtering 1,2 . For example, Ogale and co-workers studied solution combustion synthesis of a cubic Cd 2 SnO 4 phase at 750 °C, which exhibited a photocurrent density roughly 2.5 times higher than that of the orthorhombic one at 1050 °C.…”