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It is widely believed that anatase TiO2 {001} and {101} surfaces acts as the oxidative and reductive sites in photocatalytic reactions, respectively, which is attributed to their different intrinsic surface structures. However, we demonstrate that the photocatalytic redox preferences of TiO2 {001} and {101} surfaces are determined by the adsorbate-reconstructed surface structure instead of their intrinsic surface structures, which can be modulated by surface protonation/deprotonation.

Highly fluorescent and photoconductive nanoribbons assembled from an asymmetric perylene diimide (PDI) were used as a dual-mode sensor for sensitive and selective discrimination of two classes of organic amines in the vapor phase, i.e., alkyl amines and aromatic amines.

Highly fluorescent bilayer nanotubes with a right- or left-handed helical sense were assembled from a chiral asymmetric perylene diimide for the first time, which constitute a new family member of self-assembled organic nanotubes.

Supported iron tetrasulfophthalocyanine can efficiently catalyze the degradation of organic pollutants by H2O2 under visible light irradiation in an aqueous solution, and the catalyst can be easily recycled without apparent loss of activity.

The efficient accumulation of dyes in constructed natural polyelectrolyte microshells under moderate conditions, combined with the photo-assisted Fenton reagent, opens a new route for the effective elimination of dye pollutants from waste water.

Supported Fe ions on ion-exchange resin can be used to efficiently photodegrade organic pollutants in water with H2O2 at neutral pHs; this catalyst also significantly depresses the side-reaction of H2O2 conversion to O2.