Graphene oxide/triethanolamine modified titanate nanowires as photocatalytic membrane for water treatment

Liu, Gonggang; Han, Kai; Ye, Hongqi; Zhu, Chenyuan; Gao, Yu-Pei; Liu, Yong; Zhou, Yonghua

doi:10.1016/j.cej.2017.03.024

Cited by 100 publications

(32 citation statements)

References 27 publications

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“…Therefore, it is very much desirable to enhance the structural stability of GO membrane by forming stable bonding between GO nanosheets to realize real-world applications of GO membranes in aqueous environment. Currently, it has been reported that stable GO-based membranes suitable for aqueous system application could be obtained by introducing various cross-linking interactive forces, including electrostatic interactions and covalent bonds between adjacent GO nanosheets or by reducing GO membranes [ 6 , 26 , 34 , 47 , 49 , 98 , 115 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 ].…”

Section: Advanced Aqueous Stability and Mechanical Strength Of Go mentioning

confidence: 99%

“…Such significant enhancement was attributed to the strong bonded force between neighboring GO sheets because of the formation of covalent bonds between the hydroxyl groups on GO nanosheets surface and the borate ions ( Figure 12 ). Recently, Liu et al [ 127 ] fabricated highly-aqueous-stable GO membrane by incorporating triethanolamine (TEOA) modified titanate nanowires (TNWs) in GO membrane. They reported that the GO/TEOA–TNWs composite membrane showed significantly improved aqueous stability within even for one month usage due to the strong covalent bonds between the epoxy groups and carboxyl groups on the surface of GO and the N + groups in TEOA.…”

Section: Advanced Aqueous Stability and Mechanical Strength Of Go mentioning

confidence: 99%

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Recent Developments of Graphene Oxide-Based Membranes: A Review

2017

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Membrane-based separation technology has attracted great interest in many separation fields due to its advantages of easy-operation, energy-efficiency, easy scale-up, and environmental friendliness. The development of novel membrane materials and membrane structures is an urgent demand to promote membrane-based separation technology. Graphene oxide (GO), as an emerging star nano-building material, has showed great potential in the membrane-based separation field. In this review paper, the latest research progress in GO-based membranes focused on adjusting membrane structure and enhancing their mechanical strength as well as structural stability in aqueous environment is highlighted and discussed in detail. First, we briefly reviewed the preparation and characterization of GO. Then, the preparation method, characterization, and type of GO-based membrane are summarized. Finally, the advancements of GO-based membrane in adjusting membrane structure and enhancing their mechanical strength, as well as structural stability in aqueous environment, are particularly discussed. This review hopefully provides a new avenue for the innovative developments of GO-based membrane in various membrane applications.

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Section: Advanced Aqueous Stability and Mechanical Strength Of Go mentioning

confidence: 99%

Section: Advanced Aqueous Stability and Mechanical Strength Of Go mentioning

confidence: 99%

Recent Developments of Graphene Oxide-Based Membranes: A Review

2017

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“…However, 1D TiO 2 nanostructures exhibit improved photocatalytic properties due to a larger specific surface area. Thus, an increase in contact area that is more available for adsorption of pollutants or to form heterostructures with other nanomaterials [ 83 , 218 , 219 ]. For example, Liu et al [ 205 ] tested Ag-NP/GO/TiO 2 -NT nanocomposite coated membranes for photocatalytic properties that could alleviate non-migratory fouling.…”

Section: Nanosheet Induced Fouling Mitigationmentioning

confidence: 99%

2D Nanocomposite Membranes: Water Purification and Fouling Mitigation

et al. 2020

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In this study, the characteristics of different types of nanosheet membranes were reviewed in order to determine which possessed the optimum propensity for antifouling during water purification. Despite the tremendous amount of attention that nanosheets have received in recent years, their use to render membranes that are resistant to fouling has seldom been investigated. This work is the first to summarize the abilities of nanosheet membranes to alleviate the effect of organic and inorganic foulants during water treatment. In contrast to other publications, single nanosheets, or in combination with other nanomaterials, were considered to be nanostructures. Herein, a broad range of materials beyond graphene-based nanomaterials is discussed. The types of nanohybrid membranes considered in the present work include conventional mixed matrix membranes, stacked membranes, and thin-film nanocomposite membranes. These membranes combine the benefits of both inorganic and organic materials, and their respective drawbacks are addressed herein. The antifouling strategies of nanohybrid membranes were divided into passive and active categories. Nanosheets were employed in order to induce fouling resistance via increased hydrophilicity and photocatalysis. The antifouling properties that are displayed by two-dimensional (2D) nanocomposite membranes also are examined.

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“…This nanomaterial can improve thermal and mechanical properties of polymeric membranes [ 193 ]. Typically, GO presents functional groups which provide a variety of surface-modification reactions, i.e., carrying various hydrophilic functional groups (-NH 2 , -OH, and -SO 3 H) [ 194 , 195 ], that can be useful to produce functionalized graphene oxide- and graphene-based materials [ 196 ]. GO has recently attracted attention in nanocomposite membranes preparation for application in water treatment including water desalination, and removal of toxic ions and organic molecules in polluted water [ 197 ], and it is actually considered as one of the potential nanomaterials applied for the removal of pharmaceutical traces from water and wastewater [ 198 ].…”

Section: Graphene Oxide (Go)mentioning

confidence: 99%

Progress of Nanocomposite Membranes for Water Treatment

et al. 2018

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The use of membrane-based technologies has been applied for water treatment applications; however, the limitations of conventional polymeric membranes have led to the addition of inorganic fillers to enhance their performance. In recent years, nanocomposite membranes have greatly attracted the attention of scientists for water treatment applications such as wastewater treatment, water purification, removal of microorganisms, chemical compounds, heavy metals, etc. The incorporation of different nanofillers, such as carbon nanotubes, zinc oxide, graphene oxide, silver and copper nanoparticles, titanium dioxide, 2D materials, and some other novel nano-scale materials into polymeric membranes have provided great advances, e.g., enhancing on hydrophilicity, suppressing the accumulation of pollutants and foulants, enhancing rejection efficiencies and improving mechanical properties and thermal stabilities. Thereby, the aim of this work is to provide up-to-date information related to those novel nanocomposite membranes and their contribution for water treatment applications.

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Graphene oxide/triethanolamine modified titanate nanowires as photocatalytic membrane for water treatment

Cited by 100 publications

References 27 publications

Recent Developments of Graphene Oxide-Based Membranes: A Review

Recent Developments of Graphene Oxide-Based Membranes: A Review

2D Nanocomposite Membranes: Water Purification and Fouling Mitigation

Progress of Nanocomposite Membranes for Water Treatment

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