Preparation of Nano-TiO2-Coated SiO2 Microsphere Composite Material and Evaluation of Its Self-Cleaning Property

Sun, Sijia; Deng, Tongrong; Ding, Hao; Chen, Ying; Chen, Wanting

doi:10.3390/nano7110367

Cited by 35 publications

(19 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak at 474 cm −1 Fig. 6 a Performance tests for the TNFS membranes in terms of oil rejection and water flux with different oils and b oil concentrations in permeates, which are lower than US environmental discharge standards of 42 ppm corresponds to the bending and rocking of Si-O-Si or O-Si-O (Agarwal et al 1995).The wide stretching band between 3700 cm −1 and 2840 cm −1 corresponds to water, Si-OH, and Ti-OH stretching (Sun et al 2017). The peak at 1640 cm −1 corresponds to adsorbed water (Sárkány 2002), which indicates the good hydrophilicity of the membrane surfaces.…”

Section: Results and Discussion Semmentioning

confidence: 99%

Efficient oil/saltwater separation using a highly permeable and fouling-resistant all-inorganic nanocomposite membrane

Elshorafa

Saththasivam

Liu

et al. 2020

Environ Sci Pollut Res

View full text Add to dashboard Cite

Although it is still a great challenge, developing oil-/water-separating membranes that combine the advantages of high separation efficiency, salty environments tolerance, and fouling resistance are highly demanded for marine oil spill cleanups and oil-/gasproduced water treatment. Here, we report a new type of all-inorganic nanostructured membrane, which is composed of titanate nanofibers and SiO 2 particulate gel for efficient and stable oil/saltwater separation. The nanoporous and interconnected network structure constructed with titanate nanofibers is the key to ensure the high separation efficiency and high water flux of the new membrane. The SiO 2 gel is used as a binder to offer mechanical flexibility and integrity for this type of all-inorganic membrane. The new membrane displays a high oil/water separation efficiency of above 99.5% with oil content in treated effluent lower than US environmental discharge standards (42 ppm) and high water permeation flux of 1600 LMH/bar under low operation pressure. The new membrane also demonstrates outstanding durability in the environment of different salinities, and it has a good resistance for oil fouling due to its excellent underwater superoleophobicity with an oil contact angle above 150°. Most importantly, the underwater superoleophobic properties can be well maintained after being repeatedly reused. The excellent environmental durability, oil-fouling resistance, high separation efficiency, and facile fabrication process for this new type of membrane render great potential for industrial application in treating produced water.

show abstract

Section: Results and Discussion Semmentioning

confidence: 99%

Efficient oil/saltwater separation using a highly permeable and fouling-resistant all-inorganic nanocomposite membrane

Elshorafa

Saththasivam

Liu

et al. 2020

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…The reason to use the glass microfibrils is due to numerous and successful researches for obtaining polysulfone-silica composite membranes, as well as to the fact that they are excellent support for photocatalytic or antibacterial materials, like titanium dioxide particles [49,50,51,52,53].…”

Section: Discussionmentioning

confidence: 99%

Non-Resorbable Nanocomposite Membranes for Guided Bone Regeneration Based on Polysulfone-Quartz Fiber Grafted with Nano-TiO2

et al. 2019

View full text Add to dashboard Cite

The polymer-inorganic nanoparticles composite membranes are the latest solutions for multiple physicochemical resistance and selectivity requirements of membrane processes. This paper presents the production of polysulfone-silica microfiber grafted with titanium dioxide nanoparticles (PSf-SiO2-TiO2) composite membranes. Silica microfiber of length 150–200 μm and diameter 12–15 μm were grafted with titanium dioxide nanoparticles, which aggregated as microspheres of 1–3 μm, applying the sol-gel method. The SiO2 microfibers grafted with nano-TiO2 were used to prepare 12% polysulfone-based nanocomposite membranes in N-methyl pyrrolidone through the inversion phase method by evaporation. The obtained nanocomposite membranes, PSf-SiO2-TiO2, have flux characteristics, retention, mechanical characteristics, and chemical oxidation resistance superior to both the polysulfone integral polymer membranes and the PSf-SiO2 composite membranes. The antimicrobial tests highlighted the inhibitory effect of the PSf-SiO2-TiO2 composite membranes on five Gram (-) microorganisms and did not allow the proliferation of Candida albicans strain, proving that they are suitable for usage in the oral environment. The designed membrane met the required characteristics for application as a functional barrier in guided bone regeneration.

show abstract

“…Bands at 1690 -1700 cm -1 and 730 cm -1 are corresponded to the vibrations of C=O and C-C bonds in fabric structure [22,23]. In the FTIR spectra of SiO 2 -TiO 2 coated fabrics (figure2, b-e), a new band appeared at 3490-3500 cm -1 which assigned to the vibrations of Si-OH, Ti-OH groups [24,25]. Also, new bands at 780 cm -1 , 480 cm -1 appeared which attributed to vibrations of Si-O-Si, Ti-O-Ti, Si-O, Ti-O groups of SiO 2 , TiO 2 structure.…”

Section: Characterization Of Sio 2 -Tio 2 Coated Fabricsmentioning

confidence: 95%

High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

Trang

Giang

Manh

et al. 2021

NST

View full text Add to dashboard Cite

SiO2 and TiO2 sols were successfully synthesized by using sodium silicate and titanium chloride as Si and Ti sources. SiO2-TiO2 sol coated polyester/cotton fabric was fabricated by deep-coating method and using SiO2, TiO2 sols as coating materials. SiO2-TiO2 coated fabric were characterized by XRD, FTIR, TGA, SEM and EDX. From SEM image, it showed the SiO2, TiO2 particles of 20-30 nm which well deposited on fabric surface. TGA result revealed the significant improvement of thermal resistance and stability of SiO2-TiO2 coated fabric as compared to those of uncoated fabric. Flame retardant performance of SiO2-TiO2 coated fabrics was much better than that of uncoated fabric. Thus, SiO2-TiO2 coated fabric SiO2-TiO2 content of 26wt% showed the UL-94 classification of V-0 and LOI value of 30.3 were obtained. Moreover, mechanical property (tear strength) of SiO2-TiO2 coated fabrics were also improved.

show abstract

Preparation of Nano-TiO2-Coated SiO2 Microsphere Composite Material and Evaluation of Its Self-Cleaning Property

Cited by 35 publications

References 34 publications

Efficient oil/saltwater separation using a highly permeable and fouling-resistant all-inorganic nanocomposite membrane

Efficient oil/saltwater separation using a highly permeable and fouling-resistant all-inorganic nanocomposite membrane

Non-Resorbable Nanocomposite Membranes for Guided Bone Regeneration Based on Polysulfone-Quartz Fiber Grafted with Nano-TiO2

High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

Contact Info

Product

Resources

About