CdS/TiO2 composites in different ratios were prepared by simple two-step sol-gel way.
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CdS/TiO2 composites are in a mesoporous structure with uniformly dispersed particles.
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Compared with pure TiO2, 2%CdS/TiO2 shows the optimum photocatalysis methyl orange.
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The charge transfer mechanism on CdS/TiO2 composites was discussed.
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Photocurrent tests reveal the optimum photoelectrochemical properties of 2%CdS/TiO2.
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