In situ photodeposited nanoCu on TiO2 as a catalyst for hydrogen production under UV/visible radiation

Clarizia, Laura; Vitiello, Giuseppe; Luciani, Giuseppina; Somma, Ilaria Di; Andreozzi, Roberto; Marotta, Raffaele

doi:10.1016/j.apcata.2015.07.044

Cited by 49 publications

(31 citation statements)

References 37 publications

(26 reference statements)

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“…An effective and low-cost substitute for noble metals is represented by a selected group of Earth-abundant metals including cobalt [119], nickel [120] and copper. In particular, remarkable photoefficiencies were achieved over copper-based metal oxides tested for photocatalytic reforming of several sacrificial organic species [18,121] and in the presence of aqueous matrix with excess chloride ion [122] and nitrate ion [123].…”

Section: Methodsmentioning

confidence: 99%

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

et al. 2017

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Photocatalytic water splitting and organic reforming based on nano-sized composites are gaining increasing interest due to the possibility of generating hydrogen by employing solar energy with low environmental impact. Although great efforts in developing materials ensuring high specific photoactivity have been recently recorded in the literature survey, the solar-to-hydrogen energy conversion efficiencies are currently still far from meeting the minimum requirements for real solar applications. This review aims at reporting the most significant results recently collected in the field of hydrogen generation through photocatalytic water splitting and organic reforming, with specific focus on metal-based semiconductor nanomaterials (e.g., metal oxides, metal (oxy)nitrides and metal (oxy)sulfides) used as photocatalysts under UVA or visible light irradiation. Recent developments for improving the photoefficiency for hydrogen generation of most used metal-based composites are pointed out. The main synthesis and operating variables affecting photocatalytic water splitting and organic reforming over metal-based nanocomposites are critically evaluated.

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Section: Methodsmentioning

confidence: 99%

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

et al. 2017

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“…In previous studies some of the Authors investigated hydrogen generation from different oxygenated compounds by adopting a nanocopper modified-TiO 2 -P25 catalyst prepared by a "in situ" deposition process [16,17]. Investigations on the nature of copper deposited on TiO 2 , supported by different diagnostic techniques, confirmed the formation of zero-valent copper nanoparticles with particle diameter of about 30 nm.…”

Section: Introductionmentioning

confidence: 77%

“…In the present work, investigations were extended to the development of a suitable mathematical model capable of simulating hydrogen production over the same catalyst (nano-Cu (s) /TiO 2 ), developed in the previous study, when glycerol or methanol were adopted as sacrificial agents [17].…”

Section: Introductionmentioning

confidence: 99%

Kinetic modeling of hydrogen generation over nano-Cu (s) /TiO 2 catalyst through photoreforming of alcohols

et al. 2017

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“…[21] It is known that copper nanoparticles, along with those of other metals such as Au, Ag and Pt are capable to give rise to a localized surface plasmon resonance (LSPR), [49] absorbing visible light and generating charge carriers. [50][51][52][53][54] The morphology of Cu/FTO-0.65 V plays a key role in activity enhancement due to suppressed electron-hole recombination. The spherical particles are highly dispersed on the FTO and their dispersion is much better than those obtained at the other three potentials.…”

Section: Morphology-controlled Electrodeposition Of Copper Nanospherementioning

confidence: 99%

“…[59] Based on the above experimental results, a possible mechanism for photocatalytic hydrogen production process can be proposed, as shown in Figure 8b. Cu nanoparticles which are capable to give rise to a localized surface plasmon resonance (LSPR) [50,51,54] Morphology-controlled Electrodeposition of Copper Nanospheres onto FTO Chin. J. Chem.…”

Section: Morphology-controlled Electrodeposition Of Copper Nanospherementioning

confidence: 99%

Morphology‐controlled Electrodeposition of Copper Nanospheres onto FTO for Enhanced Photocatalytic Hydrogen Production

Feng

Wang

et al. 2017

Chin. J. Chem.

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Using CuSO 4 as the copper source, nanostructured copper with four different morphologies was obtained by electrodeposition method on FTO substrates. The as-synthesized Cu/FTO samples were characterized by X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), Raman, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and transmission electron microscopy (TEM). The effects of electrodeposition potential and electrodeposition time on the Cu/FTO samples and the photocatalytic performance were investigated systematically. The results showed that the Cu/FTO samples were well-crystallized and the morphologies could be changed from nanoslices to nanodendrites structure with the negative shift of the depositing potential. The electrodeposition potential and time have a significant effect on the amount of H 2 evolution. The obtained Cu nanospheres which were prepared at the potential of -0.65 V for 600 s showed the best photocatalytic behavior. The mechanisms for the photocatalytic activities were also discussed.

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In situ photodeposited nanoCu on TiO2 as a catalyst for hydrogen production under UV/visible radiation

Cited by 49 publications

References 37 publications

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

Hydrogen Generation through Solar Photocatalytic Processes: A Review of the Configuration and the Properties of Effective Metal-Based Semiconductor Nanomaterials

Kinetic modeling of hydrogen generation over nano-Cu (s) /TiO 2 catalyst through photoreforming of alcohols

Morphology‐controlled Electrodeposition of Copper Nanospheres onto FTO for Enhanced Photocatalytic Hydrogen Production

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