Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation
Аутори
Giannakoudakis, Dimitrios A.Qayyum, Abdul
Nair, Vaishakh
Khan, Ayesha
Pradhan, Swaraj
Prekodravac, Jovana
Rekos, Kyriazis
Lagrow, Alec
Bondarchuk, Oleksandr
Lomot, Dariusz
Triantafyllidis, Konstantinos
Colmenares, Juan Carlos
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The herein presented ultrasound-assisted ultra-wet (US-UWet) impregnation synthetic approach was followed in order to avoid the drawbacks of the conventional wet impregnation synthesis. The goal was to homogeneously decorate the surface of the TiO2 nanoparticles with nanometric sized (< 4 nm) clusters of mixed cupric and cuprous oxides. The physicochemical features of the nanocomposite (TiO2CuOx) were determined by high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM), high-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and Diffuse reflectance (DR) spectroscopy. TiO2CuOx showed an enhanced and continuous capability to generate molecular hydrogen upon low power ultraviolet irradiation. The benchmark commercial TiO2 P25 did not reveal any H2 formation under these conditions. TiO2CuOx presented also a high efficiency for the additives-free selective ...partial oxidation of two well established biomass derived model platform chemicals/building blocks, 5-hydroxymethylfurfural (HMF) and benzyl alcohol (BnOH) to the value-added chemicals 2,5-diformylfuran (DFF) and benzyl aldehyde (PhCHO), respectively. The nanocomposite showed higher DFF and PhCHO yield compared to P25.
Кључне речи:
Benzyl alcohol / Biomass photocatalytic valorization / HMF selective photo-oxidation / Hydrogen generation / Nano-engineered titanium dioxide / Ultrasound assisted synthesisИзвор:
Molecular Catalysis, 2021, 514, 111664-Финансирање / пројекти:
- National Science center in Poland [2017/25/B/ST8/01592, 2015/18/E/ST5/00306]
- Horizon 2020 [711859]
DOI: 10.1016/j.mcat.2021.111664
ISSN: 2468-8231
WoS: 000709924300002
Scopus: 2-s2.0-85107409142
Колекције
Институција/група
VinčaTY - JOUR AU - Giannakoudakis, Dimitrios A. AU - Qayyum, Abdul AU - Nair, Vaishakh AU - Khan, Ayesha AU - Pradhan, Swaraj AU - Prekodravac, Jovana AU - Rekos, Kyriazis AU - Lagrow, Alec AU - Bondarchuk, Oleksandr AU - Lomot, Dariusz AU - Triantafyllidis, Konstantinos AU - Colmenares, Juan Carlos PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/9843 AB - The herein presented ultrasound-assisted ultra-wet (US-UWet) impregnation synthetic approach was followed in order to avoid the drawbacks of the conventional wet impregnation synthesis. The goal was to homogeneously decorate the surface of the TiO2 nanoparticles with nanometric sized (< 4 nm) clusters of mixed cupric and cuprous oxides. The physicochemical features of the nanocomposite (TiO2CuOx) were determined by high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM), high-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and Diffuse reflectance (DR) spectroscopy. TiO2CuOx showed an enhanced and continuous capability to generate molecular hydrogen upon low power ultraviolet irradiation. The benchmark commercial TiO2 P25 did not reveal any H2 formation under these conditions. TiO2CuOx presented also a high efficiency for the additives-free selective partial oxidation of two well established biomass derived model platform chemicals/building blocks, 5-hydroxymethylfurfural (HMF) and benzyl alcohol (BnOH) to the value-added chemicals 2,5-diformylfuran (DFF) and benzyl aldehyde (PhCHO), respectively. The nanocomposite showed higher DFF and PhCHO yield compared to P25. T2 - Molecular Catalysis T1 - Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation VL - 514 SP - 111664 DO - 10.1016/j.mcat.2021.111664 ER -
@article{ author = "Giannakoudakis, Dimitrios A. and Qayyum, Abdul and Nair, Vaishakh and Khan, Ayesha and Pradhan, Swaraj and Prekodravac, Jovana and Rekos, Kyriazis and Lagrow, Alec and Bondarchuk, Oleksandr and Lomot, Dariusz and Triantafyllidis, Konstantinos and Colmenares, Juan Carlos", year = "2021", abstract = "The herein presented ultrasound-assisted ultra-wet (US-UWet) impregnation synthetic approach was followed in order to avoid the drawbacks of the conventional wet impregnation synthesis. The goal was to homogeneously decorate the surface of the TiO2 nanoparticles with nanometric sized (< 4 nm) clusters of mixed cupric and cuprous oxides. The physicochemical features of the nanocomposite (TiO2CuOx) were determined by high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM), high-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), and Diffuse reflectance (DR) spectroscopy. TiO2CuOx showed an enhanced and continuous capability to generate molecular hydrogen upon low power ultraviolet irradiation. The benchmark commercial TiO2 P25 did not reveal any H2 formation under these conditions. TiO2CuOx presented also a high efficiency for the additives-free selective partial oxidation of two well established biomass derived model platform chemicals/building blocks, 5-hydroxymethylfurfural (HMF) and benzyl alcohol (BnOH) to the value-added chemicals 2,5-diformylfuran (DFF) and benzyl aldehyde (PhCHO), respectively. The nanocomposite showed higher DFF and PhCHO yield compared to P25.", journal = "Molecular Catalysis", title = "Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation", volume = "514", pages = "111664", doi = "10.1016/j.mcat.2021.111664" }
Giannakoudakis, D. A., Qayyum, A., Nair, V., Khan, A., Pradhan, S., Prekodravac, J., Rekos, K., Lagrow, A., Bondarchuk, O., Lomot, D., Triantafyllidis, K.,& Colmenares, J. C.. (2021). Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation. in Molecular Catalysis, 514, 111664. https://doi.org/10.1016/j.mcat.2021.111664
Giannakoudakis DA, Qayyum A, Nair V, Khan A, Pradhan S, Prekodravac J, Rekos K, Lagrow A, Bondarchuk O, Lomot D, Triantafyllidis K, Colmenares JC. Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation. in Molecular Catalysis. 2021;514:111664. doi:10.1016/j.mcat.2021.111664 .
Giannakoudakis, Dimitrios A., Qayyum, Abdul, Nair, Vaishakh, Khan, Ayesha, Pradhan, Swaraj, Prekodravac, Jovana, Rekos, Kyriazis, Lagrow, Alec, Bondarchuk, Oleksandr, Lomot, Dariusz, Triantafyllidis, Konstantinos, Colmenares, Juan Carlos, "Ultrasound-assisted decoration of CuOx nanoclusters on TiO2 nanoparticles for additives free photocatalytic hydrogen production and biomass valorization by selective oxidation" in Molecular Catalysis, 514 (2021):111664, https://doi.org/10.1016/j.mcat.2021.111664 . .