Publicação
Catalytic performance of Au/ZnO nanocatalysts for CO oxidation
| Resumo: | Au was loaded (1% wt.) on three different ZnO supports, by three different methods: photodeposition, double impregnation and ultrasonication. Two commercial ZnO supports were used, along with a ZnO. sample consisting of nanosized single crystals prepared by chemical vapour deposition. The samples were extensively characterised by various techniques. CO oxidation was used as a test reaction to compare the catalytic activity. The best results were obtained with ZnO prepared by chemical vapour deposition with Au loaded by ultrasonication that showed an activity of 2 mol(co) g(Au)(-1) h(-1) at room temperature. High-resolution electron microscopy images of the sample showed a number of gold nanocrystals epitaxially oriented on the ZnO rod. The unique catalyst-substrate interaction can be related to the increased catalytic activity of this sample, which was not observed for any of the others. |
|---|---|
| Autores principais: | S. A. C. Carabineiro |
| Outros Autores: | B. F. Machado; R. R. Bacsa; P. Serp; G. Drazic; J. L. Faria; J. L. Figueiredo |
| Assunto: | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| Ano: | 2010 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade do Porto |
| Idioma: | inglês |
| Origem: | Repositório Aberto da Universidade do Porto |
| _version_ | 1867767365629902848 |
|---|---|
| author | S. A. C. Carabineiro |
| author2 | B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
| author2_role | author author author author author author |
| author_facet | S. A. C. Carabineiro B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
| author_role | author |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"S. A. C. Carabineiro\"},{\"Person.name\":\"B. F. Machado\"},{\"Person.name\":\"R. R. Bacsa\"},{\"Person.name\":\"P. Serp\"},{\"Person.name\":\"G. Drazic\"},{\"Person.name\":\"J. L. Faria\"},{\"Person.name\":\"J. L. Figueiredo\"}] |
| datacite.creators.creator.creatorName.fl_str_mv | S. A. C. Carabineiro B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
| datacite.date.Accepted.fl_str_mv | 2010-01-01T00:00:00Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| datacite.titles.title.fl_str_mv | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| dc.creator.none.fl_str_mv | S. A. C. Carabineiro B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
| dc.date.Accepted.fl_str_mv | 2010-01-01T00:00:00Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://repositorio-aberto.up.pt/handle/10216/102651 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| dc.title.fl_str_mv | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Au was loaded (1% wt.) on three different ZnO supports, by three different methods: photodeposition, double impregnation and ultrasonication. Two commercial ZnO supports were used, along with a ZnO. sample consisting of nanosized single crystals prepared by chemical vapour deposition. The samples were extensively characterised by various techniques. CO oxidation was used as a test reaction to compare the catalytic activity. The best results were obtained with ZnO prepared by chemical vapour deposition with Au loaded by ultrasonication that showed an activity of 2 mol(co) g(Au)(-1) h(-1) at room temperature. High-resolution electron microscopy images of the sample showed a number of gold nanocrystals epitaxially oriented on the ZnO rod. The unique catalyst-substrate interaction can be related to the increased catalytic activity of this sample, which was not observed for any of the others. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| id | rabertoup_da473736657eabe00a5ea4dea5f31f93 |
| identifier.url.fl_str_mv | https://repositorio-aberto.up.pt/handle/10216/102651 |
| instacron_str | UP |
| institution | Universidade do Porto |
| instname_str | Universidade do Porto |
| language | eng |
| network_acronym_str | rabertoup |
| network_name_str | Repositório Aberto da Universidade do Porto |
| oai_identifier_str | oai:repositorio-aberto.up.pt:10216/102651 |
| organization_str_mv | urn:organizationAcronym:up |
| person_str_mv | S. A. C. Carabineiro B. F. Machado R. R. Bacsa P. Serp G. Drazic J. L. Faria J. L. Figueiredo |
| publishDate | 2010 |
| reponame_str | Repositório Aberto da Universidade do Porto |
| repository_id_str | urn:repositoryAcronym:rabertoup |
| service_str_mv | urn:repositoryAcronym:rabertoup |
| spelling | Au was loaded (1% wt.) on three different ZnO supports, by three different methods: photodeposition, double impregnation and ultrasonication. Two commercial ZnO supports were used, along with a ZnO. sample consisting of nanosized single crystals prepared by chemical vapour deposition. The samples were extensively characterised by various techniques. CO oxidation was used as a test reaction to compare the catalytic activity. The best results were obtained with ZnO prepared by chemical vapour deposition with Au loaded by ultrasonication that showed an activity of 2 mol(co) g(Au)(-1) h(-1) at room temperature. High-resolution electron microscopy images of the sample showed a number of gold nanocrystals epitaxially oriented on the ZnO rod. The unique catalyst-substrate interaction can be related to the increased catalytic activity of this sample, which was not observed for any of the others.application/pdfengCatalytic performance of Au/ZnO nanocatalysts for CO oxidationS. A. C. CarabineiroB. F. MachadoR. R. BacsaP. SerpG. DrazicJ. L. FariaJ. L. FigueiredoURLhttps://repositorio-aberto.up.pt/handle/10216/102651ISSNIsPartOf0021-9517DOIIsPartOf10.1016/j.jcat.2010.05.01120102010-01-01T00:00:00Zhttp://purl.org/coar/access_right/c_16ecrestricted accessCatálise heterogénea, Engenharia químicaHeterogeneous catalysis, Chemical engineering890908 byteshttp://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://repositorio-aberto.up.pt/bitstream/10216/102651/2/61207.pdfliteraturehttp://purl.org/coar/resource_type/c_6501journal article |
| spellingShingle | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation S. A. C. Carabineiro Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| status | SINGLETON |
| subject.fl_str_mv | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| title | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| title_full | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| title_fullStr | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| title_full_unstemmed | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| title_short | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| title_sort | Catalytic performance of Au/ZnO nanocatalysts for CO oxidation |
| topic | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| topic_facet | Catálise heterogénea, Engenharia química Heterogeneous catalysis, Chemical engineering |
| url | https://repositorio-aberto.up.pt/handle/10216/102651 |
| visible | 1 |