TiO2 nanotube-supported V2O5 catalysts for selective NO reduction by NH3

Xiong, Lei; Zhong, Qin; Chen, Qianqiao; Zhang, Shule

doi:10.1007/s11814-013-0008-9

Cited by 20 publications

(5 citation statements)

References 39 publications

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“…The ZnO NRs wrapped around the fibrils enlarged the specific surface area for a more efficient electroless deposition of silver on the membrane which produced nanoparticles with a well-defined structure and excellent spatial distribution. The high activity of these increased the effectiveness of the photocatalytic efficiency of the membrane by the interaction of the nano silver particles with the zinc oxide [41]. The metal nanoparticles were believed to have acted as electron trapping sites which produced improved electron-hole separation during the photocatalytic decomposition reaction [27,30].…”

Section: Photocatalytic Formaldehyde Characterizationmentioning

confidence: 99%

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Feng

Low

et al. 2017

Journal of Membrane Science

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A B S T R A C TIt has been well recognized that there are a number of indoor contaminants including particulate matter, gaseous pollutants and microbials. The removal of indoor contaminants often requires multiple layers of various air filters. Herein, we report on a multifunctional air purifying filter produced by the hydrothermal growth of ZnO nanorod-wrapped PTFE nanofibers, constructed of nanostructured Ag deposited on the ZnO nanorods with a hierarchical structure for gas contaminant removal. Atomic layer deposition (ALD) was used to seed a layer of ZnO nanoseeds onto the PTFE fibrils which were then subjected to a hydrothermal reaction to form ZnO nanorods. Ag nanoparticels were subsequently assembled on the surface of the ZnO nanorods via a silver electroless deposition reaction. The resulting composite membrane exhibited an excellent dynamic antibacterial property of~100% and a formaldehyde degradation rate of 60%. Compared with the pristine membrane, the gas permeation of the composite membrane increased from 227. . The successful fabrication of this composite membrane with remarkable antibacterial and excellent formaldehyde degradation performance may provide a new route for the preparation of indoor air purification filters.

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Section: Photocatalytic Formaldehyde Characterizationmentioning

confidence: 99%

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Feng

Low

et al. 2017

Journal of Membrane Science

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“…Compared with other morphologies of TiO 2 (e.g., nanoparticle, nanowire, nanorod, etc. ), titanium dioxide nanotubes (TiNTs) with larger specific surface areas (approximately 400 m 2 /g) and unique hollow tubular structures have been shown to be effective in promoting low-temperature activity and enhancing the resistance property of catalysts [16][17][18]. In our previous study [19], we prepared a TiNT-supported MnO x -CeO 2 composite and found that MnCe/TiNT catalyst exhibited higher catalytic activity within a wider temperature range of 100-400 • C and stronger resistance to SO 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%

Study on NH3-SCR Activity and HCl/H2O Tolerance of Titanate-Nanotube-Supported MnOx-CeO2 Catalyst at Low Temperature

Wang,

Liu,

et al. 2024

Catalysts

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Manganese oxide-cerium oxide supported on titanate nanotubes (i.e., MnCe/TiNTs) were prepared and their catalytic activities towards NH3-SCR of NO were tested. The results indicated that the MnCe/TiNT catalyst can achieve a high NO removal efficiency above 95% within the temperature range of 150–350 °C. Even after exposure to a HCl-containing atmosphere for 2 h, the NO removal efficiency of the MnCe/TiNT catalyst maintains at approximately 90% at 150 °C. This is attributed to the large specific surface area as well as the unique hollow tubular structure of TiNTs that exposes more Ce atoms, which preferentially react with HCl and thus protect the active Mn atoms. Moreover, the abundant OH groups on TiNTs serve as Brønsted acid sites and provide H protons to expel Cl atom from the catalyst surface. The irreversible deactivation caused by HCl can be alleviated by H2O. That is because the dissociated adsorption of H2O on TiNTs forms additional OH groups and relieves HCl poisoning.

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“…V 2 O 5 /TiO 2 and V 2 O 5 -WO 3 /TiO 2 (anatase) catalysts operated at 350-400 ∘ C, with less than 1% V 2 O 5 loading, have been widely accepted as commercial catalysts [1][2][3]. Currently, other doped companions such as Mn, Cu, Fe, Ce, Wo, and F [4][5][6][7][8] and morphological changes in the supports can be used to modify the catalyst to achieve high catalytic activity [9][10][11][12]. W or Mo doped V 2 O 5 /TiO 2 , considered as the most effective commercial catalyst, is widely used for denitration in power plants and nitric acid plants [13,14].…”

Section: Introductionmentioning

confidence: 99%

Reaction and Characterization of Low-Temperature Effect of Transition Nanostructure Metal Codoped SCR Catalyst

Yang

Xiao

et al. 2017

Journal of Nanomaterials

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Typical p-type semiconductor MnO codoped with n-type semiconductors such as CeO 2 and V 2 O 5 was reported to achieve high efficiency in catalytic NO removal by NH 3 . In this paper, we present novel Mn-Ce codoped V 2 O 5 /TiO 2 catalyst which exhibited an excellent NO conversion efficiency of 90% at 140 ∘ C. By using this codoped catalyst, the best low-temperature activity was greatly decreased when compared with single Mn-or Ce-doped catalyst. According to the characterization results from BET, XRD, and XPS, the codoped catalyst was composed of both CeO 2 and amorphous Mn. The electron circulation formed between doping elements is believed to promote the electron transfer, which may be one of the reasons for excellent low-temperature denitration performance.

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TiO2 nanotube-supported V2O5 catalysts for selective NO reduction by NH3

Cited by 20 publications

References 39 publications

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

ALD-seeded hydrothermally-grown Ag/ZnO nanorod PTFE membrane as efficient indoor air filter

Study on NH3-SCR Activity and HCl/H2O Tolerance of Titanate-Nanotube-Supported MnOx-CeO2 Catalyst at Low Temperature

Reaction and Characterization of Low-Temperature Effect of Transition Nanostructure Metal Codoped SCR Catalyst

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