Photocatalytic decontamination of wastewater with porous material HNb3O8

Zarei-Chaleshtori, Maryam; Hosseini, M.; Edalatpour, Roya; Masud, S.M. Sarif; Chianelli, Russell R.

doi:10.1016/j.microc.2013.04.013

Cited by 17 publications

(6 citation statements)

References 54 publications

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“…have gained increased attention in recent reports [25][26][27][28]. These nanosheets have unique functionalities with atomic or molecular thickness.…”

Section: Introductionmentioning

confidence: 99%

“…Several two‐dimensional layered nanocomposites with perovskite structure have been reported extensively due to their unique structural properties and wide applications in the field of electronics, optics, catalysts, and electrochemistry [21–24]. The exfoliated nanosheets derived from the perovskites (Ca 2 Nb 3 O 10 – , TiNbO 5 – , Nb 3 O 8 – ) have gained increased attention in recent reports [25–28]. These nanosheets have unique functionalities with atomic or molecular thickness.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Pan

et al. 2017

Micro & Nano Letters

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The laminar lanthanum niobate KLaNb 2 O 7 with perovskite structure was intercalated with cationic cobalt (III) tetrakis-5, 10, 15, and 20-(N-methyl-4-pyridyl) porphyrin using the exfoliation/restacking method. The as-prepared material was characterised by several analytic methods including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and infrared microscopy. The exfoliation/restacking process was monitored and proved by the change of zeta potential, and the cyclic voltammetry measurements of LaNb 2 O 7 /Co III TMPyP nanocomposite demonstrated excellent electrocatalytic activity towards oxygen reduction reaction.

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“…have gained increased attention in recent reports [25][26][27][28]. These nanosheets have unique functionalities with atomic or molecular thickness.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Pan

et al. 2017

Micro & Nano Letters

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“…It provides a potential possibility to exploit solar energy for contaminated water cleanup, so more focuses have been paid attention to this technology . The utilization of solar light to remove pollutants means clean advantages from an environmental viewpoint. , Furthermore, it will possess the economic viability for the real application to compete with other water treatment techniques, for example, hydrogen peroxide/UV–C or ozone oxidation …”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Hierarchical Porous TiO₂ Ceramics with Enhanced Photocatalytic Performance for Micropolluted Pesticide Degradation

Xing

Zhou

et al. 2014

ACS Appl. Mater. Interfaces

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In this research, hierarchical porous TiO2 ceramics were successfully synthesized through a camphene-based freeze-drying route. The well-dispersed TiO2 slurries were first frozen and dried at room temperature, followed by high-temperature sintering. The ceramics were analyzed by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. Results indicated that the obtained TiO2 ceramics could inhibit undesirable anatase-to-rutile phase transformation and grain growth even at temperatures as high as 800 °C. In this experiment, optimal compressive strength and porosity of the TiO2 ceramics were produced with the initial TiO2 slurry content of ∼15 wt %. The resultant TiO2 ceramics performed excellently in the photodegradation of atrazine and thiobencarb, and the total organic carbon removal efficiency was up to 95.7% and 96.7%, respectively. More importantly, the TiO2 ceramics were easily recyclable. No obvious changes of the photocatalytic performance were observed after six cycles. Furthermore, the ceramics also effectively degraded other pesticides such as dimethoate, lindane, dipterex, malathion, and bentazone. These hierarchical porous TiO2 ceramics have potential applications in environmental cleanup.

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“…12 From the environmental perspective, the use of solar energy to drive the destruction of pollutants has an absolute advantage. 13,14 It also reduces the costs of the process which makes it competitive with other technologies for wastewater treatment, such as ozone or H 2 O 2 /UV-C. 15 However, three severe restrictions hinder the practical application of TiO 2 , namely the separation of photoinduced charges and holes, [16][17][18][19][20] the improvement of photon utilization [21][22][23][24] and photocatalyst recycling. [25][26][27][28] A large amount of energy and effort has been devoted to this subject, and more practical ways to use this technology on an industrial scale are needed.…”

Section: Introductionmentioning

confidence: 99%

A floating macro/mesoporous crystalline anatase TiO₂ceramic with enhanced photocatalytic performance for recalcitrant wastewater degradation

Xing

Zhou

et al. 2014

Dalton Trans.

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A macro/mesoporous anatase TiO2 ceramic floating photocatalyst has been successfully synthesized using highly thermally stable mesoporous TiO2 powder as a precursor, followed by a camphene-based freeze-casting process and high-temperature calcinations. The ceramics are characterized in detail by X-ray diffraction, Raman spectra, scanning electron microscopy, transmission electron microscopy and N2 adsorption-desorption isotherms. The results indicate that the TiO2 ceramics present hierarchical macro/mesoporous structures, which maintain high porosity and high compressive strength at the optimal sintering temperature of 800 °C. The ordered mesoporous TiO2 network still possesses high thermal stability and inhibits the anatase-to-rutile phase transformation during calcinations. The obtained ceramics exhibit good adsorptive and photocatalytic activity for the degradation of octane and rhodamine B, and the total organic carbon removal ratio is up to 98.8% and 98.6% after photodegradation for 3 h, respectively. The roles of active species in the photocatalytic process are compared using different types of active species scavengers, and the degradation mechanism is also proposed. Furthermore, the ceramics are recyclable, and no clear changes are observed after ten cycles. In addition, the ceramics are also active in the photodegradation of phenol, thiobencarb, and atrazine. Therefore, these novel floating photocatalysts will have wide applications, including the removal of floating organic pollutants from the wastewater surfaces or the removal of soluble organic pollutants from wastewater.

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Photocatalytic decontamination of wastewater with porous material HNb3O8

Cited by 17 publications

References 54 publications

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Facile Synthesis of Hierarchical Porous TiO₂ Ceramics with Enhanced Photocatalytic Performance for Micropolluted Pesticide Degradation

A floating macro/mesoporous crystalline anatase TiO₂ceramic with enhanced photocatalytic performance for recalcitrant wastewater degradation

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Photocatalytic decontamination of wastewater with porous material HNb3O8

Cited by 17 publications

References 54 publications

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb 2 O 7 /Co III TMPyP prepared via the exfoliation/restacking method

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb 2 O 7 /Co III TMPyP prepared via the exfoliation/restacking method

Facile Synthesis of Hierarchical Porous TiO2 Ceramics with Enhanced Photocatalytic Performance for Micropolluted Pesticide Degradation

A floating macro/mesoporous crystalline anatase TiO2ceramic with enhanced photocatalytic performance for recalcitrant wastewater degradation

Contact Info

Product

Resources

About

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Electrocatalytic activity towards oxygen reduction reaction of laminar nanocomposite LaNb ₂ O ₇ /Co ^III TMPyP prepared via the exfoliation/restacking method

Facile Synthesis of Hierarchical Porous TiO₂ Ceramics with Enhanced Photocatalytic Performance for Micropolluted Pesticide Degradation

A floating macro/mesoporous crystalline anatase TiO₂ceramic with enhanced photocatalytic performance for recalcitrant wastewater degradation