000101521 001__ 101521
000101521 005__ 20220426091137.0
000101521 0247_ $$2doi$$a10.1016/j.cattod.2020.04.018
000101521 0248_ $$2sideral$$a118198
000101521 037__ $$aART-2020-118198
000101521 041__ $$aeng
000101521 100__ $$0(orcid)0000-0001-9391-3594$$aManno, R.$$uUniversidad de Zaragoza
000101521 245__ $$aUltra-Small Silver Nanoparticles Immobilized in Mesoporous SBA-15. Microwave-Assisted Synthesis and Catalytic Activity in the 4-Nitrophenol Reduction
000101521 260__ $$c2020
000101521 5060_ $$aAccess copy available to the general public$$fUnrestricted
000101521 5203_ $$aDespite the continuous developments in the synthesis of noble metal nanoparticles, the uniformity of particle size distribution still represents a critical aspect. A fast and homogeneous nucleation is a key requirement to achieve a monodisperse particle size distribution and in this scenario, the application of alternative energy sources may constitute a winning strategy for the development of highly active nanocatalysts with unique properties. Here we present several approaches to control the synthesis of Ag nanoparticles stabilized by an anionic template, and the results evidence the advantages of adopting unconventional heating techniques such as microwave heating. The fast and selective electromagnetic heating strongly reduced the nucleation and growth times, impacting on the homogeneity of the resulting particle size distribution. In this work, we have carried out the microwave-assisted synthesis of Ag nanoparticles and the resulting nanoparticles were compared to those synthesized under conventional heating using an oil bath, showing that the differences in temperature profile and heating rates between the two synthesis pathways had a clear effect on the size distribution of the resulting nanoparticles as well as on their stability under long term storage. Finally, the synthesized ultra-small Ag nanoparticles were deposited on a mesoporous substrate, reducing undesired Ostwald ripening and facilitating their reusability. This nanocatalyst was adopted for the abatement of 4-nitrophenol, a well-known carcinogenic pollutant with adverse effects on human beings and aquatic life. The catalytic results confirm the high activity of the catalyst thanks to the high dispersion achieved afforded by ultra-small Ag nanoparticles and the accessibility provided by the wide SBA-15 mesoporous channels.
000101521 536__ $$9info:eu-repo/grantAgreement/EC/H2020/721290/EU/European Training Network for Continuous Sonication and Microwave Reactors/COSMIC$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 721290-COSMIC
000101521 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000101521 590__ $$a6.766$$b2020
000101521 591__ $$aCHEMISTRY, APPLIED$$b10 / 74 = 0.135$$c2020$$dQ1$$eT1
000101521 591__ $$aENGINEERING, CHEMICAL$$b19 / 143 = 0.133$$c2020$$dQ1$$eT1
000101521 591__ $$aCHEMISTRY, PHYSICAL$$b36 / 162 = 0.222$$c2020$$dQ1$$eT1
000101521 592__ $$a1.397$$b2020
000101521 593__ $$aChemistry (miscellaneous)$$c2020$$dQ1
000101521 593__ $$aCatalysis$$c2020$$dQ1
000101521 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000101521 700__ $$0(orcid)0000-0002-6873-5244$$aSebastian, V.$$uUniversidad de Zaragoza
000101521 700__ $$0(orcid)0000-0002-2966-9088$$aIrusta, S.$$uUniversidad de Zaragoza
000101521 700__ $$0(orcid)0000-0002-4758-9380$$aMallada, R.$$uUniversidad de Zaragoza
000101521 700__ $$0(orcid)0000-0002-8701-9745$$aSantamaria, J.$$uUniversidad de Zaragoza
000101521 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000101521 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000101521 773__ $$g362 (2020), 81-89$$pCatal. today$$tCatalysis Today$$x0920-5861
000101521 8564_ $$s407483$$uhttps://zaguan.unizar.es/record/101521/files/texto_completo.pdf$$yPostprint
000101521 8564_ $$s2224626$$uhttps://zaguan.unizar.es/record/101521/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000101521 909CO $$ooai:zaguan.unizar.es:101521$$particulos$$pdriver
000101521 951__ $$a2022-04-26-08:54:38
000101521 980__ $$aARTICLE