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The development of clean water production heavily relies on membrane technology. In this study, a novel flexible nanostructured membrane consisting of hierarchical mesoporous TiO2 sphere and sulfonated graphene oxide (GO–SO3H) was successfully designed and fabricated for the first time. This membrane shows enhanced strength and flexibility compared with a pure inorganic membrane due to the special GO–SO3H/TiO2 heterojunctions. In addition, the strong coordination bonds between the sulfonic group (–SO3H) of GO–SO3H and Ti4+ center of TiO2 endow this membrane with excellent adaptability in various wastewater conditions. This membrane possesses a high efficiency for concurrent photodegradation and water filtration without an organic fouling problem. Hence, this newly developed membrane has a bright future in water purification to solve the looming water crisis.
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Sun et al. (2013) studied this question.
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