Inorganic photocatalytic membranes for the remediation of VOCs in groundwater at the Portsmouth Site

Semiconducting materials, in particular titanium dioxide (TiO 2 ), under ultraviolet (UV) radiation are capable of producing highly reactive species, such as hydroxyl radicals, which readily and nonselectively oxidize and decompose organic pollutants in water. Such inorganic materials can be designed and fabricated in the form of water‐permeable membranes to combine the chemical decomposition of water contaminants with their concurrent physical separation, which is the conceptual basis for photocatalytic ceramic membranes (PCMs). The chemical function of PCMs can also induce water detoxification and disinfection, as well as antifouling action. The multiple actions of PCMs make them attractive for sustainable and versatile water treatment. Recently, progress in novel synthetic chemistry and fabrication routes for innovative PCMs, especially through nanotechnological approaches, has overcome some technical drawbacks of PCMs. This article provides an introduction to PCMs with emphasis on current advances in their fabrication and functionalization. Based on semiconducting TiO 2 materials under UV radiation, a concise description about the mechanism of photocatalytic reactions is presented, and the multiple functions of TiO 2 PCMs are overviewed. Some innovative fabrication approaches for PCMs, including the structural and compositional manipulation of monolith and composite TiO 2 membranes, are also described. Finally, the technical and economic limitations of PCMs and their prospects are briefly discussed.

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Photocatalytic Ceramic Membranes

Zakersalehi

Choi

Andersen

et al. 2013

Encyclopedia of Membrane Science and Technology

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Inorganic photocatalytic membranes for the remediation of VOCs in groundwater at the Portsmouth Site

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Photocatalytic Ceramic Membranes

Photocatalytic Ceramic Membranes

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