Two-step preparation of Ag/tetrapod-like ZnO with photocatalytic activity by thermal evaporation and sputtering

Antibacterial and photocatalytic activities of sonochemically prepared ZnO and Ag–ZnO

“…Ag-ZnO obtained by RF magnetron sputtering exhibits mixed results. While short sputtering time of 1 and 5 s enhance the photocatalytic activity long sputtering time of 30, 60 and 150 s inhibit the same [23]. Similarly, the photocatalytic activity depends on the calcination temperature; Ag-ZnO (1, 3, 5%) calcined at 1000 and 800 • C are less photocatalytically active than ZnO and those calcined at 300, 400, 500 and 600 • C are more photocatalytically active [4].…”

“…With methylene blue, rhodamine B, and methyl orange as test substrates, the observed photocatalytic activity is found to be substrate specific also. Preparation of Ag-ZnO nanoparticles by chemical [10], photochemical [11,12], coprecipitation [5,13], sol-gel [4], hydrothermal [14][15][16][17][18] or solvothermal [19], microwave [20], flame spray pyrolysis [21], electrospinning [22], and RF magnetron sputtering [23] methods and hybrid induction and laser heating technique [24] have been reported already. Although reports on synthesis of nanocrystalline ZnO are numerous, ZnO nanostructure continues to be of interest; it has been synthesized in the form of nanoparticles by chemical precipitation [25], nanowires by solution-phase reaction [26], nanoparticles, nanosheets, and hexagonal nanopyramids by direct calcination [27], and nanoparticles, nanowires, nanobelts, nanorods, prismatic nanorods, nanosheets, nanoflowers, nanospheres, and hollow spheres by hydrothermal method recently [28][29][30][31][32].…”

Unmodified and Gold-Modified Semiconductor Catalysts for Solar Light Assisted Photodegradation of Crystal Violet

“…These catalysts are practically always synthesized in solution using a large variety of different synthetic procedures. Only few examples are presented about the use of sputtering technique for obtaining such catalysts for the degradation of organic dyes [18,20]. To best of my knowledge there are no publications dealing with gold-modified ZnOs obtained by sputtering technique for the photocatalytic degradation of crystal violet dye (Fig.…”

Synthesis and cathodoluminescence of In2O3–SnO2 nanowires heterostructures

“…Among various nanowires, 1D heterostructured nanowires have attracted more attentions because the modulated compositions are of multiple functionalities by combining the physical properties of the different materials. Up to now, various synthesis routes including chemical vapor deposition, self-assembly, hydrothermal routes, and template-assisted methods are successfully applied to the synthesis of the heterostructured nanowires which exhibits enhanced properties in nanoelectronics, nanophotonics, sensing and catalysis [9][10][11][12][13][14][15][16][17][18][19][20]. SnO 2 is one of the most important semiconductors and has been widely used for transparent conductors, gas sensors, solar cells and lithium-ion batteries due to its wide band gap of 3.6 eV at room temperature [21][22][23][24][25][26][27][28][29].…”