PMID- 31070923 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20190723 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 35 IP - 22 DP - 2019 Jun 4 TI - Interdiffusive Surfactant Procedure for the Preparation of Nanoarchitectured Porous Films: Application to the Growth of Titania Thin Films on Silicon Substrates. PG - 7169-7174 LID - 10.1021/acs.langmuir.9b00960 [doi] AB - Herein is reported the preparation of nanostructured mesoporous supported films, in this case, titanium dioxide nanoparticles on silicon wafer, according to a new approach taking place in two consecutive deposition steps: (i) coating of a homogeneous and continuous layer of a surfactant on the selected support and (ii) building up of a second layer of the fresh metal-oxide gel precursor, followed by thermal treatment to generate porosity. This approach represents an alternative way to soft-template procedures, as for instance, the largely applied evaporation-induced self-assembly (EISA) method, which typically consists of a single-step deposition of the mixture of gel precursor and surfactant used as a soft template to create porosity. The main advantage of the procedure reported here compared to the EISA method is the possibility of reaching tunable textural characteristics along the growing film (pore size, shape, and distribution of pores) by using gels with nanoparticles preformed at different stages via a simple regulation of the residence time of the precursors deposited on the support containing the surfactant. FAU - Perez-Carvajal, Javier AU - Perez-Carvajal J AD - Materials Science Institute of Madrid, CSIC , c/ Sor Juana Ines de la Cruz, 3, Cantoblanco , 28049 Madrid , Spain. FAU - Aranda, Pilar AU - Aranda P AUID- ORCID: 0000-0003-2196-0476 AD - Materials Science Institute of Madrid, CSIC , c/ Sor Juana Ines de la Cruz, 3, Cantoblanco , 28049 Madrid , Spain. FAU - Boissiere, Cedric AU - Boissiere C AUID- ORCID: 0000-0003-1212-6850 AD - College de France and Pierre and Marie Curie University , 11 Place Marcelin Berthelot , 75231 Paris , France. FAU - Sanchez, Clement AU - Sanchez C AUID- ORCID: 0000-0002-6426-4844 AD - College de France and Pierre and Marie Curie University , 11 Place Marcelin Berthelot , 75231 Paris , France. FAU - Ruiz-Hitzky, Eduardo AU - Ruiz-Hitzky E AUID- ORCID: 0000-0003-4383-7698 AD - Materials Science Institute of Madrid, CSIC , c/ Sor Juana Ines de la Cruz, 3, Cantoblanco , 28049 Madrid , Spain. LA - eng PT - Journal Article DEP - 20190522 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2019/05/10 06:00 MHDA- 2019/05/10 06:01 CRDT- 2019/05/10 06:00 PHST- 2019/05/10 06:00 [pubmed] PHST- 2019/05/10 06:01 [medline] PHST- 2019/05/10 06:00 [entrez] AID - 10.1021/acs.langmuir.9b00960 [doi] PST - ppublish SO - Langmuir. 2019 Jun 4;35(22):7169-7174. doi: 10.1021/acs.langmuir.9b00960. Epub 2019 May 22.