Efficient uranium reduction of bacterial cellulose-MoS2 heterojunction via the synergistically effect of Schottky junction and S-vacancies engineering

2D/2D g-C3N4/1T-MoS2 Nanohybrids as Schottky Heterojunction Photocatalysts for Nuclear Wastewater Pretreatment

“…Generally, the organic matter, especially TA, will chelate with nuclides (e.g., hexavalent uranium ions) in nuclear wastewater, which seriously reduces the water-soluble state and exchange state of such metal ions. This increases the difficulty of targeted removal of heavy metals via various methods such as physical adsorption, chemical fixation, etc. , Therefore, it is necessary to pretreat the organic matter in the nuclear wastewater and then remove the nuclides . It seems that photocatalytic technology has become a promising strategy for the treatment of the organic matter in nuclear wastewater due to its convenient operation and environmental friendliness. − However, the photocatalytic efficiency extremely depends on the physicochemical properties of the photocatalyst.…”

“…This increases the difficulty of targeted removal of heavy metals via various methods such as physical adsorption, chemical fixation, etc. 18,19 Therefore, it is necessary to pretreat the organic matter in the nuclear wastewater and then remove the nuclides. 20 It seems that photocatalytic technology has become a promising strategy for the treatment of the organic matter in nuclear wastewater due to its convenient operation and environmental friendliness.…”

Biofibrous nanomaterials for extracting strategic metal ions from water

“…Chemical reduction of uranium ions into insoluble U(IV) like UO 2 also provides a new way for extracting uranium from water solutions. Chen [79] integrated MoS 2 nanosheets into aerogels of bacterial cellulose. This Schottky heterostructure with a sulfur vacancy (S-vacancy) could promote uranium extraction by photocatalytic U(VI) reduction.…”

Efficient photoreduction of hexavalent uranium over defective ZnO nanoparticles by oxygen defect engineering

“…Vacancy engineering is a good method to tailor the band gap and improve the photocatalytic efficiency. [29][30][31][32][33] Due to the existence of O V , defect energy levels can be formed on the semiconductor, thereby expanding the photoresponse range of the semiconductor. Meanwhile, surface O V with typical defect states can trap electrons or holes, thereby enhancing the electron-hole separation efficiency.…”