WorldCat Identities

García, Hermenegildo

Overview
Works: 8 works in 19 publications in 3 languages and 40 library holdings
Genres: Criticism, interpretation, etc  Handbooks and manuals  History 
Roles: 958, Author
Classifications: TP247, 547
Publication Timeline
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Most widely held works by Hermenegildo García
Bases de la química orgánica industrial : un curso en transparencias by María José Climent( Book )

9 editions published between 2003 and 2005 in Spanish and English and held by 16 WorldCat member libraries worldwide

Bases de la química orgánica industrial : problemas resueltos by María José Climent( Book )

4 editions published between 2002 and 2011 in Spanish and held by 14 WorldCat member libraries worldwide

Manual de laboratorio : técnicas, métodos y aplicaciones en el tratamiento de aguas( Book )

1 edition published in 2010 in Spanish and held by 5 WorldCat member libraries worldwide

Estudio comparativo entre la zeolita mesoporosa MCM-41 y la faujasita : Comportamiento como catalizadores ácidos y como medios de reacción by María Elvira Armengol Grau( Book )

1 edition published in 1994 in Spanish and held by 1 WorldCat member library worldwide

Síntesis y estudio fotoquímico de esteres de enol de cetonas aromáticas by Hermenegildo García Gómez( Book )

1 edition published in 1980 in Spanish and held by 1 WorldCat member library worldwide

Production of Solar Fuels using CO2 by Bhanu Chandra Marepally( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

In view of the recent alarming rate of depletion of fossil fuel reserves and the drastic rise in the CO2 levels in the atmosphere leading to global warming and severe climate changes, tapping into all kinds of renewable energy sources has been among the top priorities in the research fields across the globe. One of the many such pathways is CO2 reduction to fuels using renewable energies, more commonly referred as photo-electro-catalytic (PEC) cells. Experimental tests were carried out on various types of catalysts in both the gas and liquid phase cells (lab-designed) to understand the different selectivity, productivity and the reaction products obtained. For the studies on the EC reduction of CO2 in gas phase cell, a series of electrodes (based on Cu, Fe, Pt and Cu/Fe metal nanoparticles - NPs - deposited on carbon nanotubes - CNTs - or carbon black and then placed at the interface between a Nafion membrane and a gas-diffusion-layer) were prepared. Under gas phase, the formation of ≥C1 products (such as ethanol, acetone and isopropanol) were observed, the highest being for Fe and closely followed by Pt, evidencing that also non-noble metals can be used as efficient catalysts under these conditions. To enhance the net fuels, a different set of electrodes were also prepared based on substituted Zeolitic Imidazolate (SIM-1) type MOF coatings (MOF-based Fe-CNTs, Pt-CNTs and Cu/Fe-CNTs) and Pt-MOF showed improved fuels. Moving to the studies on the EC reduction of CO2 in liquid phase cell, a similar set of electrodes were prepared (metal NPs of Cu, Fe, Pt, Ru and Co deposited on CNTs or carbon black). For liquid phase conditions, in terms of net C-products, catalytic electrodes based on Pt topped the class, closely followed by Ru and Cu, while Fe got the lowest position. The probable underlying reaction mechanism was also provided. In order to improve further the performances, varied sized metal NPs (Ru, Fe, Pt and Cu) have been synthesized using different techniques: (i) impregnation (ImR) route to achieve NPs in the size range of 10-50 nm; (ii) organometallic (OM) approach to synthesize uniform and ultrafine NPs in the size range of 1-5 nm (i.e., Fe NPs were synthesized through a novel synthesis route to attain 1-3 nm NPs); (iii) Nanowire (NW) top-down approach to obtain ultrafine copper metal NPs in the size range of 2-3.8 nm. The enhancements in the fuel productivity were found to be 5-30 times higher for the smaller metal NPs over the larger metal NPs and moreover, with reduced metal loading from 10 to 1-2 wt %. A different set of electrodes based on nano-foams (Cu NF and Fe NF on Cu foil, Fe foil, Al foil, Inconel foil and Al grid/mesh) prepared via electro-deposition were also investigated, to further improve CO2 to fuels conversion. After, optimization of deposition and voltage using cyclic voltammetry, the fuels improved by 2-10 times over the highest net fuels achieved using metal NPs doped CNT electrodes
Reactividad fotoquímica de derivados de orto-aciloxiacetofenonas by Hermenegildo García Gómez( Book )

1 edition published in 1983 in Spanish and held by 1 WorldCat member library worldwide

Modification de nanotubes de TiO2 pour la production d'hydrogène par photodissociation de l'eau sous lumière solaire by Pierre-Alexandre Gross( )

1 edition published in 2014 in French and held by 1 WorldCat member library worldwide

Ce travail de thèse traite de la production d'hydrogène par le procédé de photoélectrocatalyse en utilisant une photoanode à base de nanotubes de TiO2 verticalement alignés. L'utilisation du TiO2 étant limité pour des applications solaires en raison de son large gap, il est nécessaire de le modifier. Deux approches sont proposées pour modifier les nanotubes de TiO2 et leur permettre d'absorber la lumière visible. La première est une modification chimique du TiO2 par co-dopage cationique-anionique (Ta-N) ou (Nb-N). Les cations sont insérés durant la croissance des nanotubes grâce à une approche inédite, et l'azote est inséré durant le traitement thermique. Ceci a pour effet la formation d'orbitales hybrides qui entraîne une réduction du gap et une activité sous lumière visible, tout en permettant une stabilité de la structure. La seconde approche consiste à déposer des nanoparticules d'Ag sur la surface des nanotubes de TiO2. Grâce au contrôle de la morphologie des nanoparticules d'Ag, leur résonnance plasmonique permet de stimuler l'absorption du TiO2 et ainsi d'augmenter son rendement à la fois sous lumière UV et sous lumière visible
 
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.89 (from 0.85 for Manual de ... to 0.96 for Síntesis ...)

Alternative Names
García Gómez, Hermenegildo

Hermenegildo García Gómez químico y catedrático español

Hermenegildo García Gómez Spaans hoogleraar

Languages