A facile strategy to fabricate plasmonic Cu modified TiO 2 nano-flower films for photocatalytic reduction of CO 2 to methanol

Liu, Enzhou; Qi, Lulu; Bian, Juanjuan; Chen, Yihan; Hu, Xiaoyun; Fan, Jun; Liu, Hanchen; Zhu, Changjun; Wang, Qiuping

doi:10.1016/j.materresbull.2015.03.064

Cited by 132 publications

(73 citation statements)

References 61 publications

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“…Polyvinylpyrrolidone was used as capping agent and NaH2PO2*H2O as reducing agent in diethylglycole solution under MW irradiation. The catalysts were tested in the photocatalytic reduction of CO2 to CH3OH [54].…”

Section: Mw-assisted Synthesis Of Photocatalysts For Co2 Reductionmentioning

confidence: 99%

Microwave, Ultrasound, and Mechanochemistry: Unconventional Tools that Are Used to Obtain “Smart” Catalysts for CO2 Hydrogenation

Manzoli

Bonelli

2018

Catalysts

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Abstract:The most recent progress obtained through the precise use of enabling technologies, namely microwave, ultrasound, and mechanochemistry, described in the literature for obtaining improved performance catalysts (and photocatalysts) for CO 2 hydrogenation, are reviewed. In particular, the main advantages (and drawbacks) found in using the proposed methodologies will be discussed and compared by focusing on catalyst design and optimization of clean and efficient (green) synthetic processes. The role of microwaves as a possible activation tool used to improve the reaction yield will also be considered.

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Section: Mw-assisted Synthesis Of Photocatalysts For Co2 Reductionmentioning

confidence: 99%

Microwave, Ultrasound, and Mechanochemistry: Unconventional Tools that Are Used to Obtain “Smart” Catalysts for CO2 Hydrogenation

Manzoli

Bonelli

2018

Catalysts

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“…Many researchers reported that metals, such as Au, Ag, Pt, Cu, and Pd, could be used to promote the migration efficiency of electrons [16][17][18][19][20]. Among of them, Cu has attracted much more attention because of its low cost and abundance [21]. Additionally, Cu NPs can generate the localized surface plasmon resonance (LSPR) effect and it is beneficial for the separation of photoinduced electron-hole pairs, which can greatly enhance the photocatalytic activity [22].…”

Section: Introductionmentioning

confidence: 99%

Cu Nanoparticles/Fluorine-Doped Tin Oxide (FTO) Nanocomposites for Photocatalytic H2 Evolution under Visible Light Irradiation

et al. 2017

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Abstract:Copper nanoparticles/fluorine-doped tin oxide (FTO) nanocomposites were successfully prepared by a simple hydrothermal method. The synthesized nanocomposites were characterized by X-ray diffraction (XRD), UV-visible diffuse-reflectance spectrum (UV-VIS DRS), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), Raman spectra, and X-ray photoelectron spectroscopy (XPS). The obtained Cu/FTO nanocomposites exhibit high photocatalytic activity for H 2 evolution under visible light (λ > 420 nm) irradiation. When the content of Cu is 19.2 wt % for FTO, the Cu/FTO photocatalyst shows the highest photocatalytic activity and the photocatalytic H 2 evolution rate is up to 11.22 µmol·h −1 . Meanwhile, the photocatalyst exhibits excellent stability and repeatability. It is revealed that the transfer efficiency of the photogenerated electrons is improved greatly because of the intense interaction between Cu NPs and FTO. Furthermore, a possible mechanism is proposed for enhanced photocatalytic H 2 evolution of Cu/FTO photocatalysts under visible light irradiation.

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“…Cu as a metal of relative abundance and low cost has attracted much attention due to enhancement of the photocatalytic activity [16][17][18][19][20][21][22][23]. It can prevent the recombination of photoexcited electrons and holes as co-catalysts and generate localized surface plasmon resonance(LSPR) effect which promotes the separation of electron-holes [17].…”

Section: Introductionmentioning

confidence: 99%

“…It can prevent the recombination of photoexcited electrons and holes as co-catalysts and generate localized surface plasmon resonance(LSPR) effect which promotes the separation of electron-holes [17]. Momeni prepared highly ordered copper doped TiO2 nanotube arrays thin-film by in situ electrochemical method and the samples exhibited better photo-catalytic activity than the TNTs [19].…”

Section: Introductionmentioning

confidence: 99%

“…TNTs modification by doping metals such as Au, Pt, Pd, Ag [7][8][9][10][11] or metal oxides such as ZnO, RuO2, WO3, has been a hot topic of research to improve the solar spectrum absorption efficiency while maintaining its excellent charge-transfer property. The metal ion or metal oxides enhances the photo-catalytic activity by reducing electron-hole pair recombination and/or reducing the band gap.Cu as a metal of relative abundance and low cost has attracted much attention due to enhancement of the photocatalytic activity [16][17][18][19][20][21][22][23]. It can prevent the recombination of photoexcited electrons and holes as co-catalysts and generate localized surface plasmon resonance(LSPR) effect which promotes the separation of electron-holes [17].…”

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confidence: 99%

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Photoelectrochemical Response and Semiconductor Characters of Cu/Cu2O/CuO/TiO2 Nanotube Arrays Photocatalyst

Liang¹,

Xu²,

Li³

et al. 2017

Proceedings of the 2017 International Conference on Material Science, Energy and Environmental Engineering (MSEEE 2017)

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Abstract. The cocatalysts of various copper morphology modified TiO2 nanotube arrays (TNTs) were prepared by electrochemical deposition. The morphologies of the samples were investigated by SEM. The reductive and oxidative copper modification strongly reinforce TNTs photocurrent response in UV and visible light region, especially the later one shows higher catalytical activity in visible light from 610nm to 740nm. The reductive copper morphology consists of Cu and Cu2O, and oxidative one comprises Cu, Cu2O and CuO by photocurrent analysis. The flat band potentials calculated by Mott-Schottky curves move positive potential direction with the oxidation depth. IntroductionOne-dimensional TiO2 nanotube arrays (TNTs) due to their high aspect ratio and large surface to volume ratio, have displayed excellent charge-transfer and photochemical property in photocatalytical process [1][2][3][4][5][6]. However, only wavelength below 387 nm, about 5% of solar spectrum energy can be directly utilized due to its large band gap of 3.2 eV. TNTs modification by doping metals such as Au, Pt, Pd, Ag [7][8][9][10][11] or metal oxides such as ZnO, RuO2, WO3, has been a hot topic of research to improve the solar spectrum absorption efficiency while maintaining its excellent charge-transfer property. The metal ion or metal oxides enhances the photo-catalytic activity by reducing electron-hole pair recombination and/or reducing the band gap.Cu as a metal of relative abundance and low cost has attracted much attention due to enhancement of the photocatalytic activity [16][17][18][19][20][21][22][23]. It can prevent the recombination of photoexcited electrons and holes as co-catalysts and generate localized surface plasmon resonance(LSPR) effect which promotes the separation of electron-holes [17]. Momeni prepared highly ordered copper doped TiO2 nanotube arrays thin-film by in situ electrochemical method and the samples exhibited better photo-catalytic activity than the TNTs [19]. The energy band gaps (Eg) of its oxides Cu2O and CuO are narrower than TiO2, respectively 2.2 eV and 1.7eV, which can promote visible light absorption [20].Chen et al. have developed a novel core-shell heterostructured Cu/Cu2O nanowires as efficient visible light photocatalysts [21,22]. Multifunctional CuO nanowire/TiO2 nanotube arrays photoelectrode has been fabricated applying for photocatalysis [23]. However, very few studies on the photoelectrochemical performance of TNTs co-modification by elemental Cu and its oxides( CuO and Cu2O) have been reported.In this work, we prepared Cu/Cu2O/CuO/TNTs catalysts by electrochemical method successfully, and tested their photo electrochemical response in UV and visible light and semiconductor characters. Moreover, the mechanism of TNTs modification by Cu/Cu2O/CuO has been analyzed.

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A facile strategy to fabricate plasmonic Cu modified TiO 2 nano-flower films for photocatalytic reduction of CO 2 to methanol

Cited by 132 publications

References 61 publications

Microwave, Ultrasound, and Mechanochemistry: Unconventional Tools that Are Used to Obtain “Smart” Catalysts for CO2 Hydrogenation

Microwave, Ultrasound, and Mechanochemistry: Unconventional Tools that Are Used to Obtain “Smart” Catalysts for CO2 Hydrogenation

Cu Nanoparticles/Fluorine-Doped Tin Oxide (FTO) Nanocomposites for Photocatalytic H2 Evolution under Visible Light Irradiation

Photoelectrochemical Response and Semiconductor Characters of Cu/Cu2O/CuO/TiO2 Nanotube Arrays Photocatalyst

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