Synthesis and characterization of TiO<sub>2</sub>/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Zhang, Hui; Wang, Xiaoyan; Li, Na; Xia, Jiaohui; Meng, Qingmei; Ding, Jincheng; Lü, Jie

doi:10.1039/c8ra06681g

Cited by 200 publications

(77 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the peak at 1,000 cm-1 in composites is attributed to the Ti-O=Ti and Ti-O-C groups. However, some peaks are still present in the rGO-TiO2-Ag spectra but the oxygen peak appears at lower intensity due to the exclusion of oxygen molecules during the reduction process [18]. The essential peak of Ag and the TiO2 is still present in the FTIR of rGO-TiO2-Ag, which indicates the successful manifestation of the silver and titanium nanoparticles on the rGO.…”

Section: Characterization Resultsmentioning

confidence: 96%

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

Zayan

Rasheed²,

John³

et al. 2021

Preprint

View full text Add to dashboard Cite

The performance of water as a heat transfer medium in numerous applications is limited by its effective thermal conductivity. In order to improve the thermal conductivity of water, herein we report the development and thermophysical characterization of a novel metal-metaloxide-carbon based ternary hybrid nanoparticles (THNp), GO-TiO2-Ag and the rGO-TiO2-Ag. The results indicate that the graphene oxide and reduced graphene oxide based ternary hybrid nanoparticles dispersed in water enhance its thermal conductivity by 66% and 83%, respectively, even at very low concentrations. Mechanisms contributing to this significant enhancement are discussed. The experimental thermal conductivity is plotted against the existing empirical hybrid thermal conductivity correlations. We found that those correlations are not suitable for the metal-metaloxide-carbon combinations, calling for the developing a new thermal conductivity models. The rheological measurements of the nanofluids display non-Newtonian behavior, and the viscosity reduces with the increase in temperature. Such behavior is possibly due to the non-uniform shapes of the ternary hybrid nanoparticles.

show abstract

Section: Characterization Resultsmentioning

confidence: 96%

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

Zayan

Rasheed²,

John³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…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. Moreover, disappearing of bands at 3430 cm -1 , 1730 cm -1 and 700 cm -1 which are characteristic for fabric structure indicated the coverage of SiO 2 , TiO 2 particles on the polyester/cotton fabric surface [26,27]. As presented in figure 3A, weight loss diagram of polyester/cotton fabric showed 3 stages: at the first stage (50 -200 o C), weight loss of 10 wt% was observed.…”

Section: Characterization Of Sio 2 -Tio 2 Coated Fabricsmentioning

confidence: 91%

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

“…Additionally, the I D /I G ratio increased to 0.97, proving the partial reduction of GO following the hydrothermal process. Therefore, we can infer that the hybrid material consists of TiO 2 particles decorating the graphene oxide nanosheets [51].…”

Section: Graphene Oxide (Go) and Go-tio 2 Hybrid Nanomaterialsmentioning

confidence: 99%

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

et al. 2020

View full text Add to dashboard Cite

A nanostructured hybrid material consisting of TiO2 nanoparticles grown and stabilized on graphene oxide (GO) platelets, was synthesized and tested as nanofiller in a polymeric matrix of sulfonated polysulfone (sPSU) for the preparation of new and low-cost nanocomposite electrolytes for proton exchange membrane fuel cell (PEMFC) applications. GO-TiO2 hybrid material combines the nanoscale structure, large interfacial area, and mechanical features of a 2D, layered material, and the hygroscopicity properties of ceramic oxides, able to maintain a suitable hydration of the membrane under harsh fuel cell operative conditions. GO-TiO2 was synthetized through a new, simple, one-pot hydrothermal procedure, while nanocomposite membranes were prepared by casting using different filler loadings. Both material and membranes were investigated by a combination of XRD, Raman, FTIR, thermo-mechanical analysis (TGA and Dynamic Mechanical Analysis) and SEM microscopy, while extensive studies on the proton transport properties were carried out by Electrochemical Impedance Spectroscopy (EIS) measurements and pulse field gradient (PFG) NMR spectroscopy. The addition of GO-TiO2 to the sPSU produced a highly stable network, with an increasing of the storage modulus three-fold higher than the filler-free sPSU membrane. Moreover, the composite membrane with 3 wt.% of filler content demonstrated very high water-retention capacity at high temperatures as well as a remarkable proton mobility, especially in very low relative humidity conditions, marking a step ahead of the state of the art in PEMs. This suggests that an architecture between polymer and filler was created with interconnected routes for an efficient proton transport.

show abstract

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Abstract: TiO2/GO nanocomposites were synthesized successfully and exhibited an excellent ability to reduce heavy metal ions in reverse osmosis concentrate.

Cited by 200 publications

References 51 publications

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

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

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

Contact Info

Product

Resources

About

Synthesis and characterization of TiO2/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Abstract: TiO2/GO nanocomposites were synthesized successfully and exhibited an excellent ability to reduce heavy metal ions in reverse osmosis concentrate.

Cited by 200 publications

References 51 publications

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

Synthesis and Characterization of Novel Ternary Hybrid Nanoparticles as Thermal Additives in H2O

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

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

Contact Info

Product

Resources

About

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate