Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor

Xu, Meng-Xi; Wang, Yun‐Hai; Geng, Jiafeng; Jing, Dengwei

doi:10.1016/j.cej.2016.08.080

Cited by 101 publications

(36 citation statements)

References 37 publications

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“…The BET method can be used for the characterization of various types of microporous materials including zeolites, photocatalysts, polymers, and photoelectrodes . Since MOFs can contain different sizes of micropores, from “ultramicropores” (below 7 Å) to bigger “super‐micropores” (between 7 and 20 Å) or even mesopores (above 20 Å), the obtained BET surface areas can potentially be inaccurate.…”

Section: The Agreement Between Different Types Of Bet Surface Areasmentioning

confidence: 99%

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

et al. 2018

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Surface area determination with the Brunauer–Emmett–Teller (BET) method is a widely used characterization technique for metal–organic frameworks (MOFs). Since these materials are highly porous, the use of the BET theory can be problematic. Several researchers have evaluated the BET method to gain insights into the usefulness of the obtained results and interestingly, their findings are not always consistent. In this review, the suitability of the BET method is discussed for MOFs that have a diverse range of pore widths below the diameters of N2 or Ar and above 20 Å. In addition, the surface area of MOFs that are obtained by implementing different approaches, such as grand canonical Monte Carlo simulations, calculations from the crystal structures or based on experimental N2, Ar, or CO2 adsorption isotherms, are compared and evaluated. Inconsistencies in the state‐of‐the‐art are also noted. Based on the current literature, an overview is provided of how the BET method can give useful estimations of the surface areas for the majority of MOFs, but there are some crucial and specific exceptions which are highlighted in this review.

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Section: The Agreement Between Different Types Of Bet Surface Areasmentioning

confidence: 99%

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

et al. 2018

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“…The authors have shown that as the Ag loading decreases, the amount of photocatalytic conversion of NO to N 2 increases. Ag nanoparticles have been found to play two distinct functions: the first is to contribute to visible light harvesting thanks to the surface plasmon resonance phenomenon; the second is to provide a source of Ag + ions that interact with the byproduct N 2 O, forming an Ag + -N 2 O complex that can be rapidly decomposed to N 2 [136].…”

Section: Photocatalytic Removal Of Atmospheric Pollutantsmentioning

confidence: 99%

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

et al. 2017

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Photocatalytic nanomaterials such as TiO 2 are receiving a great deal of attention owing to their potential applications in environmental remediation. Nonetheless, the low efficiency of this class of materials in the visible range has, so far, hampered their large-scale application. The increasing demand for highly efficient, visible-light-active photocatalysts can be addressed by hybrid nanostructured materials in which two or more units, each characterised by peculiar physical properties, surface chemistry and morphology, are combined together into a single nano-object with unprecedented chemical-physical properties. The present review intends to focus on hybrid nanomaterials, based on TiO 2 nanoparticles able to perform visible-light-driven photocatalytic processes for environmental applications. We give a brief overview of the synthetic approaches recently proposed in the literature to synthesise hybrid nanocrystals and discuss the potential applications of such nanostructures in water remediation, abatement of atmospheric pollutants (including NO x and volatile organic compounds (VOCs)) and their use in self-cleaning surfaces.

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“…Noble metals are able to enhance the photocatalytic activity. Moreover, noble metals have photoresponse under visible light owing to the surface plasmon resonance (SPR) effect and act as an electron sink to prolong the lifetime of the charge carriers . Noble metal‐modified titania photocatalytic systems possess a fundamental advantage over the dye‐sensitized photocatalytic systems simply because noble metals are generally more stable than the dye molecules.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Robust Cu/TiO₂ Nanorod Photocatalysts for Simultaneous Removal of Cr(VI) and Methylene Blue under Solar Light

Guan

Zhou

Wen

et al. 2018

J Chinese Chemical Soc

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Because of its large bandgap, TiO 2 can function only under UV light. TiO 2 surface modification with noble metal nanoparticles can extend the light absorption from UV to visible light region and enhance the photocatalytic quantum yield. In this work, TiO 2 nanorods (Cu/TiO 2 ) modified by copper nanoparticles were prepared by a one-step solvothermal method at low cost. The resultant Cu/TiO 2 nanorods show excellent synergistic effect in the oxidation of methylene blue (MB) and the reduction of aqueous Cr(VI) under solar light irradiation. Mechanistic investigation suggests that the Cr(VI) species could effectively scavenge the electrons from MB in the presence of the asprepared photocatalyst, leading to the simultaneous removal of both pollutants. Being economically viable, environmentally sustainable, and highly efficient, the proposed photocatalyst holds promise for technologies involving simultaneous organic degradation and heavy metal removal in wastewater treatment.

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Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor

Cited by 101 publications

References 37 publications

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

Efficient and Robust Cu/TiO₂ Nanorod Photocatalysts for Simultaneous Removal of Cr(VI) and Methylene Blue under Solar Light

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Photodecomposition of NOx on Ag/TiO2 composite catalysts in a gas phase reactor

Cited by 101 publications

References 37 publications

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

Evaluation of the BET Theory for the Characterization of Meso and Microporous MOFs

Visible-Light-Active TiO2-Based Hybrid Nanocatalysts for Environmental Applications

Efficient and Robust Cu/TiO2 Nanorod Photocatalysts for Simultaneous Removal of Cr(VI) and Methylene Blue under Solar Light

Contact Info

Product

Resources

About

Efficient and Robust Cu/TiO₂ Nanorod Photocatalysts for Simultaneous Removal of Cr(VI) and Methylene Blue under Solar Light