Poly(vinyl alcohol)/poly(acrylic acid)/TiO2/graphene oxide nanocomposite hydrogels for pH-sensitive photocatalytic degradation of organic pollutants

Moon, Young-E; Jung, Gowun; Yun, Jumi; Kim, Hyung Il

doi:10.1016/j.mseb.2013.07.002

Cited by 85 publications

(28 citation statements)

References 40 publications

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“…However, the dye removal efficiency was mainly determined by the photocatalytic decomposition of MB solution rather than the actual adsorbed amount of dye . Then, the photocatalytic decomposition behavior was investigated with various samples on MB solution as shown in Figure (b).…”

Section: Resultsmentioning

confidence: 99%

“…However, the industrial purification of waste water by TiO 2 is hindered by light utilization, low adsorption ability and fast recombination of photogenerated electron–hole pairs . Hence, the introduction of carbon‐based materials (carbon nanotube, graphene) was tried to overcome the limitation of pure TiO 2 . Work to date has emphasized that graphene can act as an electron acceptor to overcome the fast recombination of photogenerated electron–hole pairs .…”

Section: Introductionmentioning

confidence: 99%

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One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

Zeng

Peng

Wang

et al. 2018

J of Applied Polymer Sci

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We report the development of TiO 2 /graphene/poly(acrylamide) superporous hybrid by a radical polymerization reaction and explore its environmental application as photocatalyst of organic pollutants. During the polymerization reaction, graphene nanosheets and TiO 2 nanoparticles homogeneously distribute on the hydrogel, in which TiO 2 nanoparticles with a uniform size are densely anchored onto graphene and self-assembled into different structures with various graphene contents. The resultant TiO 2 /graphene/poly(acrylamide) superporous hybrid experiences tremendous adsorption toward dye pollution before photodegradation, and it also displays similar photodecomposition efficiency with pristine TiO 2 . Moreover, the TiO 2 /graphene/poly(acrylamide) superporous hybrid is recyclable, which demonstrates the potential of hybrid as an attractive photocatalyst for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

Zeng

Peng

Wang

et al. 2018

J of Applied Polymer Sci

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“…For instance, organic dyes are often discharged with wastewater into the local environment without adequate treatment. Although the preparation of graphene-based composite hydrogels for photocatalyst has been previously reported [64,65], recovering the photocatalyst after waste water purification has been a challenging issue. Thus, polymer-based photocatalyst nanocomposites have been attracting more interest due to their advantages for photocatalyst recovery.…”

Section: Discussionmentioning

confidence: 99%

Nanodeserts: A Conjecture in Nanotechnology to Enhance Quasi-Photosynthetic CO₂Absorption

Wang

Chen

Zhang

et al. 2016

International Journal of Polymer Science

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This paper advances “nanodeserts” as a conjecture on the possibility of developing the hierarchical structured polymeric nanomaterials for enhancing abiotic CO2fixation in the soil-groundwater system beneath deserts (termed as quasi-photosynthetic CO2absorption). Arid and semiarid deserts ecosystems approximately characterize one-third of the Earth’s land surface but play an unsung role in the carbon cycling, considering the huge potentials of such CO2absorption to expand insights to the long-sought missing CO2sink and the naturally unneglectable turbulence in temperature sensitivities of soil respiration it produced. “Nanodeserts” as a reconciled concept not only indicate a conjecture in nanotechnology to enhance quasi-photosynthetic CO2absorption, but also aim to present to the desert researchers a better understanding of the footprints of abiotic CO2transport, conversion, and assignment in the soil-groundwater system beneath deserts. Meanwhile, nanodeserts allow a stable temperature sensitivity of soil respiration in deserts by largely reducing the CO2release above the deserts surface and highlighting the abiotic CO2fixation beneath deserts. This may be no longer a novelty in the future.

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“…The detailed literature study reveals the chitosanpolyacrylic acid materials were prepared using microwave, high temperature, or radiations induced synthesis, and their applications as super adsorbent, for removal of cations, for controlled release of drugs, and as magnetic nanospheres have been explored [19][20][21][22]. The polymer based nanocomposites such as poly(vinyl alcohol)/polyacrylic acid/TiO 2 /graphene oxide have been used for photocatalytic degradation of pollutants [23].…”

Section: Introductionmentioning

confidence: 99%

Investigations on Amphoteric Chitosan/TiO₂ Bionanocomposites for Application in Visible Light Induced Photocatalytic Degradation

Bahal

Kaur

Sharotri

et al. 2019

Advances in Polymer Technology

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The present investigation reports the greener synthesis and characterization of novel acrylic acid grafted amphoteric chitosan/TiO2 (CAT) bionanocomposites using ultrasonic radiations. This was done by grafting of acrylic acid onto chitosan in the presence of potassium persulfate by free radical polymerization reaction. The uniform distribution of metal oxide in CA/TiO2 nanocomposites was achieved on grafted acrylic acid/chitosan which contains a weak anionic group (-COOH) using ultrasonication technique. Physiochemical techniques such as X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Fourier Transform Infra-Red spectroscopy (FT-IR), Energy Dispersive X-ray spectroscopy (EDX), and Thermal Gravimetric Analysis (TGA) were employed to characterize synthesized CAT. Nanocomposite CAT was applied for degradation of industrial dye. Malachite green (MG) often presents in the waste waters. The degradation kinetics were studied by monitoring the photocatalytic reaction for degradation of MG under visible light, and the rate constant of the reaction was found to be 7.13x10−3min−1. The current research work opens vistas for the new dimensions in the area of water treatment by solving the issues related to degradation reaction efficiency in visible light and cost effectiveness.

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Poly(vinyl alcohol)/poly(acrylic acid)/TiO2/graphene oxide nanocomposite hydrogels for pH-sensitive photocatalytic degradation of organic pollutants

Cited by 85 publications

References 40 publications

One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

Nanodeserts: A Conjecture in Nanotechnology to Enhance Quasi-Photosynthetic CO₂Absorption

Investigations on Amphoteric Chitosan/TiO₂ Bionanocomposites for Application in Visible Light Induced Photocatalytic Degradation

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Poly(vinyl alcohol)/poly(acrylic acid)/TiO2/graphene oxide nanocomposite hydrogels for pH-sensitive photocatalytic degradation of organic pollutants

Cited by 85 publications

References 40 publications

One‐pot self‐assembled TiO2/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

One‐pot self‐assembled TiO2/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

Nanodeserts: A Conjecture in Nanotechnology to Enhance Quasi-Photosynthetic CO2Absorption

Investigations on Amphoteric Chitosan/TiO2 Bionanocomposites for Application in Visible Light Induced Photocatalytic Degradation

Contact Info

Product

Resources

About

One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

One‐pot self‐assembled TiO₂/graphene/poly(acrylamide) superporous hybrid for photocatalytic degradation of organic pollutants

Nanodeserts: A Conjecture in Nanotechnology to Enhance Quasi-Photosynthetic CO₂Absorption

Investigations on Amphoteric Chitosan/TiO₂ Bionanocomposites for Application in Visible Light Induced Photocatalytic Degradation