Efficient Approach for Simultaneous CO and H2 Production via Photoreduction of CO2 with Water over Copper Nanoparticles Loaded TiO2 Научная публикация
| Журнал |
Applied Catalysis A: General
ISSN: 0926-860X |
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| Вых. Данные | Год: 2016, Том: 523, Страницы: 107-117 Страниц : 11 DOI: 10.1016/j.apcata.2016.05.027 | ||||||||
| Авторы |
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Реферат:
Photoreduction of CO2 with water to alternative fuels using low cost meterials is an efficient approach to
mitigate CO2. The present work describes a series of copper nanoparticles (Cu-NPs) loaded on TiO2, here
copper nanoparticles were separately prepared by chemical reductionmethod, and then loaded on freshly
synthesized TiO2. Oxidized and reduced forms of Cu/TiO2 nanoparticles were obtained by calcination
under air and H2 respectively. Prepared catalysts were characterized by XRD, SEM, EDX, HR-TEM, XPS,
BET surface area analysis, TPR, UV–vis diffuse reflectance spectroscopy and spectrofluorometry. Catalytic
potential of prepared catalysts was checked for photocatalytic reduction of CO2 with water vapor under
UV-C irradiation. The effect of oxidation state and loading amount of Cu as well as irradiation wavelength
was also investigated. CO and H2 were observed as photocatalytic products. Among allthe photocatalysts,
1% Cu-Red/TiO2 exhibited the highest photoactivity, with an initial rate of CO and H2 production of 334
and 452 mol g−1 h−1 respectively, under UV-C light. The photocatalytic role of the Cu-NPs surface giving
contribution to overall reaction was confirmed by using Cu-NPs, 1% Cu-Oxi/SiO2 and 1% Cu-Red/SiO2. A
plausible mechanism of CO2 reduction is suggested and computationally confirmed. Reaction mechanism
includes stages of CO2 adsorption at the Cu-TiO2 interface, reduction into HCO2, and dissociation into
adsorbed hydroxyls and CO. The most energy demanding step was found to be CO desorption that could
be facilitated by 254 nm quanta.
Библиографическая ссылка:
Singhal N.
, Ali A.
, Vorontsov A.
, Pendem C.
, Kumar U.
Efficient Approach for Simultaneous CO and H2 Production via Photoreduction of CO2 with Water over Copper Nanoparticles Loaded TiO2
Applied Catalysis A: General. 2016. V.523. P.107-117. DOI: 10.1016/j.apcata.2016.05.027 WOS Scopus РИНЦ CAPlusCA OpenAlex Sciact
Efficient Approach for Simultaneous CO and H2 Production via Photoreduction of CO2 with Water over Copper Nanoparticles Loaded TiO2
Applied Catalysis A: General. 2016. V.523. P.107-117. DOI: 10.1016/j.apcata.2016.05.027 WOS Scopus РИНЦ CAPlusCA OpenAlex Sciact
Даты:
| Поступила в редакцию: | 31 дек. 2015 г. |
| Принята к публикации: | 29 мая 2016 г. |
| Опубликована online: | 31 мая 2016 г. |
| Опубликована в печати: | 5 авг. 2016 г. |
Идентификаторы БД:
| Web of science: | WOS:000381593700012 |
| Scopus: | 2-s2.0-84974710193 |
| РИНЦ: | 27124728 |
| Chemical Abstracts: | 2016:1002735 |
| Chemical Abstracts (print): | 165:207788 |
| OpenAlex: | W2416319285 |
| Sciact: | 19624 |