{"corpus_id":103655321,"paper_sha":"15c9af1e0416bf2c7fef870e7e97297af5c8c6bc","doi":"10.1016/J.CATTOD.2017.12.009","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2773567346,"dblp_id":null,"acl_id":null,"title":"ZnO and Pt-ZnO photocatalysts: Characterization and photocatalytic activity assessing by means of three substrates","year":2017,"publication_date":"2017-12-07","venue":"Catalysis Today","journal":{"name":"Catalysis Today","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Chemistry","Environmental Science"],"reference_count":39,"citation_count":97,"influential_citation_count":1,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Abstract ZnO nanoparticles have been previously synthesized by a facile precipitation procedure by mixing aqueous solutions of Zn(II) acetate and dissolved Na2CO3 at pH ca. 7.0 without the addition of a template. The as-prepared ZnO material was anealed at 400 °C in air for 2 h. The Pt-ZnO catalysts (0.5 or 1.0 Pt wt.%) were obtained by photochemical deposition method on the surface of the prepared ZnO sample, using hexachloroplatinic acid (H2PtCl6). It has been shown that Zn2+ is lost from the photocatalyst to the medium and a replacement of the cationic vacancies of Zn2+ by Pt4+ cations occurs during the platinization process of the ZnO samples, regardless of whether the platinum metal photodeposition process. The as-prepared catalysts were characterized by XRD, BET, FE-SEM, TEM, XPS and diffuse reflectance spectroscopy (DRS). Three different probe molecules were used to evaluate the photocatalytic properties under UV-illumination: Methyl Orange and Rhodamine B were chosen as dye substrates and Phenol as a transparent substrate. High conversion values (ca. 100%) and a total organic carbon (TOC) removal of 90–96%, were obtained over these photocatalysts after 160 min of UV illumination. In general, it was observed that the presence of Pt on ZnO affects the lattice parameters and the crystallite size. Although ZnO can completely degrade RhB, MO and Phenol totally in ca. 60 min, the process is more efficient for Pt–ZnO photocatalysts.","claims":[{"public_id":"cl_03b9b717c9aa88aa8967a52a9e8dea9b","status":"active","text":"During platinization, Zn2+ is lost from the photocatalyst to the medium and Pt4+ cations replace Zn2+ cation vacancies in the ZnO samples.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_03b9b717c9aa88aa8967a52a9e8dea9b"},{"public_id":"cl_2d72abba440b5256e26cc85c5bbacbd5","status":"active","text":"Pt incorporation affects the lattice parameters and crystallite size of ZnO.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_2d72abba440b5256e26cc85c5bbacbd5"},{"public_id":"cl_88de7acc077c783216606e7099a884b3","status":"active","text":"Pt-ZnO catalysts with 0.5 or 1.0 wt.% Pt were prepared by photochemical deposition of hexachloroplatinic acid on annealed ZnO nanoparticles.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_88de7acc077c783216606e7099a884b3"},{"public_id":"cl_e9e178357dccbef145fc2936f8572187","status":"active","text":"Pt-ZnO photocatalysts are more efficient than bare ZnO for degrading Methyl Orange, Rhodamine B, and Phenol.","confidence":0.93,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_e9e178357dccbef145fc2936f8572187"},{"public_id":"cl_20431e7967abdab0ae11d0341053fe59","status":"active","text":"Under UV illumination, the catalysts achieved about 100% conversion and 90–96% total organic carbon removal after 160 min.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_20431e7967abdab0ae11d0341053fe59"}],"concepts":[{"public_id":"co_015a6f63f8fa8147953beeda368941d4","status":"active","name":"crystallite size","description":"The average size of crystalline domains in the catalyst material.","types":["structural parameter"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_015a6f63f8fa8147953beeda368941d4"},{"public_id":"co_13193f40184e297183557eac0fc23a49","status":"active","name":"photochemical deposition method","description":"A synthesis approach that deposits platinum onto ZnO using light-driven reduction from a platinum precursor.","types":["method"],"aliases":["photodeposition method","photochemical deposition"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_13193f40184e297183557eac0fc23a49"},{"public_id":"co_20bde46b4b91ba98abcb222a5b7c8686","status":"active","name":"UV illumination","description":"Ultraviolet light exposure used to drive the photocatalytic reactions.","types":["experimental condition"],"aliases":["UV light"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_20bde46b4b91ba98abcb222a5b7c8686"},{"public_id":"co_2c462d072be66bc177b3f3cd782e858f","status":"active","name":"Methyl Orange","description":"An azo dye used as a probe substrate to evaluate photocatalytic degradation.","types":["probe molecule","dye substrate"],"aliases":["MO"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_2c462d072be66bc177b3f3cd782e858f"},{"public_id":"co_572811d5435d7a0320aa81f426cc563e","status":"active","name":"Zn2+","description":"Zinc ions in the ZnO lattice that are reported to be lost to the surrounding medium during catalyst preparation.","types":["ion"],"aliases":["zinc ions"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_572811d5435d7a0320aa81f426cc563e"},{"public_id":"co_5f3622705173b63de2d06d18763670f6","status":"active","name":"lattice parameters","description":"Structural dimensions of the crystalline ZnO lattice.","types":["structural parameter"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_5f3622705173b63de2d06d18763670f6"},{"public_id":"co_727f3588b0dbb436be26ccebb4a4d468","status":"active","name":"total organic carbon removal","description":"The fraction of organic carbon eliminated from the treated solution during photocatalysis.","types":["outcome measure"],"aliases":["TOC removal"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_727f3588b0dbb436be26ccebb4a4d468"},{"public_id":"co_ba8ecd048455a95d59246fe367c116e4","status":"active","name":"platinization process","description":"The process of introducing platinum into ZnO to form Pt-modified photocatalysts.","types":["process"],"aliases":["platinum deposition"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_ba8ecd048455a95d59246fe367c116e4"},{"public_id":"co_c267647b24a77ab4e51443b3bbdf668f","status":"active","name":"Phenol","description":"A transparent organic substrate used to assess photocatalytic activity.","types":["probe molecule","substrate"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_c267647b24a77ab4e51443b3bbdf668f"},{"public_id":"co_d113075e67b5bdd4b14c5c73aa79c6f4","status":"active","name":"Pt-ZnO catalysts","description":"Platinum-modified zinc oxide photocatalysts prepared by depositing Pt onto ZnO.","types":["catalyst","photocatalyst"],"aliases":["Pt-ZnO","platinized ZnO catalysts"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_d113075e67b5bdd4b14c5c73aa79c6f4"},{"public_id":"co_d21a13ea4e6837a4f30fa594c88780d0","status":"active","name":"photocatalytic properties","description":"The ability of the catalyst to promote light-driven chemical degradation reactions.","types":["property"],"aliases":["photocatalytic activity"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_d21a13ea4e6837a4f30fa594c88780d0"},{"public_id":"co_ddc1e2df0ca9a85051ef2855977b1336","status":"active","name":"ZnO nanoparticles","description":"Nanometer-scale zinc oxide particles used as the base photocatalyst material.","types":["material"],"aliases":["ZnO"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_ddc1e2df0ca9a85051ef2855977b1336"},{"public_id":"co_e1f6937160b4287fbe374fb16496ae31","status":"active","name":"Pt4+ cations","description":"Platinum ions that occupy cation vacancies in ZnO during platinization.","types":["ion"],"aliases":["Pt4+"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_e1f6937160b4287fbe374fb16496ae31"},{"public_id":"co_e71bc368ed12e1f82ec576249bc57556","status":"active","name":"Rhodamine B","description":"A dye used as a probe substrate to evaluate photocatalytic degradation.","types":["probe molecule","dye substrate"],"aliases":["RhB"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_e71bc368ed12e1f82ec576249bc57556"},{"public_id":"co_fc646904f53a835e95b9f61f800c11c4","status":"active","name":"hexachloroplatinic acid","description":"A platinum-containing precursor used to deposit Pt onto ZnO.","types":["reagent","precursor"],"aliases":["H2PtCl6"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_fc646904f53a835e95b9f61f800c11c4"}],"external_ids":{"DOI":"10.1016/J.CATTOD.2017.12.009","ArXiv":null,"PubMed":null,"PubMedCentral":null,"MAG":2773567346,"DBLP":null,"ACL":null},"open_access":{"is_open_access":false,"pdf_url":null,"landing_url":"https://sah.borca.ai/papers/103655321","source":null,"pdf_url_source":null,"license":null,"reason":"pdf_url_not_indexed"},"reference_availability":{"status":"available","references_indexed":true,"full_text_available":false,"full_text_source":null,"count_basis":"semantic_scholar_metadata","extraction_status":"not_applicable","reason":null},"source":{"provider":"episteme2","base_corpus":"semantic_scholar_dump","freshness_mode":"unknown","basis":["semantic_scholar_metadata","postgres_metadata"],"limits":["paper metadata is based on indexed upstream scholarly datasets","claims and concepts are available only for extracted papers","absence of claims or concepts means no extracted graph data is available in this response"],"status":"available","degraded":false,"degraded_reasons":[],"diagnostics":{"status":"available","degraded":false,"degraded_reasons":[],"metadata_status":"available","graph_status":"available","abstract_status":"available"},"source_flags":1},"paper_id":636503,"paper_uid":"b77f1804-57fb-43f9-a084-438cdc37df9d","canonical_identity":{"paper_id":636503,"paper_uid":"b77f1804-57fb-43f9-a084-438cdc37df9d","identity_status":"available","lookup_basis":"semantic_scholar_external_id","compatibility_path":"corpus_id"},"url":"https://sah.borca.ai/papers/103655321"}