Excellent adsorptive-photocatalytic performance of zinc oxide and biomass derived N, O-contained biochar nanocomposites for dyes and antibiotic removal

A laser-induced zinc oxide/graphene photoelectrode for a photocurrent-polarity-switching photoelectrochemical biosensor with bipedal DNA walker amplification

“…18 Among various photosensitive materials, zinc oxide (ZnO) is typically considered an ideal photocatalyst because of its non-toxicity, low price, and high electron mobility. [19][20][21] However, its excessively wide bandgap (forbidden bandwidth: 3.20-3.37 eV) limits the application of ZnO in PEC sensing platforms. 22,23 To improve the light absorption capability of ZnO, the preparation of ZnO/graphene composites via combining ZnO with graphene, an excellent charge transport matrix, has been reported.…”

Hollow Nanospheres of Conjugated Microporous Polymers for the Degradation of Organic Pollutants in Water

“…There are various ways of utilizing solar energy, such as photocatalysis, photothermal conversion, and photoelectric conversion, which are now employed as varied models. Above all, photocatalysis and solar-driven interface evaporation (SDIE) technology have received widespread attention, especially in the field of water treatment. − …”

Exploitation of a Poly Acrylic Acid-Fe3+ Hydrogel Photocatalyst with Homogeneous and Heterogeneous Features for the Efficient Removal of Organic Pollutants

“…Currently, commonly available methods include physical adsorption, biodegradation, photocatalysis, and membrane filtration. − Among them, photocatalysis has been utilized to treat dyes in wastewater because of its simple operation, high efficiency, and recyclability. , Traditional inorganic semiconductors, such as TiO 2 , ZnO, SnO 2 , PbS, and BiVO 4 , are used as photocatalytic materials. − However, photocatalytic performance of the semiconductors is less satisfactory due to their poor adsorption property, low utilization of irradiation light, low separation efficiency of photogenerated charges (e – –h + pairs), and secondary pollution. Frequently, numerous substrates such as graphene, biomass-derived carbon, carbon nanotubes, and metal–organic frameworks have been employed to combine with the semiconductors for improving their adsorption capacity and the separation efficiency of photogenerated e – –h + pairs, thus improving the photocatalytic performance. − For instance, Yang et al adopted the cation-exchange strategy to fabricate the Cu 2+ -doped ZnS-rGO composite with excellent photocatalytic activity . Chang et al introduced carbon nanotubes in the CuS-ZnS heterostructure to prevent the recombination of photogenerated electron–hole pairs, thus contributing to improved photocatalytic activity .…”