Información de contacto

hvaldes@ucsc.cl

Facultad de Ingeniería

Dr. Héctor Valdés Morales

Director del Departamento de Ingeniería Industrial

Título Profesional

Ingeniero Químico. Universidad Central “Marta Abreu” de las Villas, Cuba; Titulo homologado al título Chileno de Ingeniero Civil Químico. Universidad de Chile.

Grados

Doctor en Ciencias de la Ingeniería con mención en Ingeniería Química
Universidad de Concepción
Postdoctoral Research Associate
Technische Universität Clausthal. Alemania

Líneas de investigación

Catálisis ambiental
Tecnologías para el control de la contaminación atmosférica
Control de etileno durante el almacenamiento y distribución de productos agrícolas
Tecnologías no convencionales de tratamiento de aguas y aguas residuales
Procesos de oxidación avanzados para el tratamiento de aguas y aguas residuales

Cursos que dicta

Pregrado

Procesos Químicos y Térmicos
Proyecto Integrador de Procesos Industriales
Gestión del Agua en la Industria
Proyecto de Título

Postgrado

Contaminación
Módulos de Contaminación Hídrica
Tecnologías Limpias

Publicaciones académicas

Novel Wet Catalytic Elimination of Recalcitrant Azo Dyes from Contaminated Waters Using Fe 3 O 4 –CuO Nanoparticles Immobilized Over g-C 3 N 4 -Functionalized Canvas Fabric. Ozone: Science & Engineering. https://doi.org/10.1080/01919512.2025.2610949.
High‐Performance Degradation of Organic Pollutants Using Nitrogen‐Rich g‐C 3 N 5 /SnO 2 Heterojunction Photocatalysts. Energy Technology. https://doi.org/10.1002/ente.70602.

Activated carbons from Baru (Dipteryx alata Vog.) waste impregnated with copper oxide: application in the postharvest preservation of bananas. Food Science and Technology. https://doi.org/10.5327/fst.507.
Demonstrating the substitutional doping of erbium (Er) in BiFeO3 nanoparticles for the enhanced solar-driven photocatalytic activity. Journal of Physics and Chemistry of Solids. https://doi.org/10.1016/j.jpcs.2025.112573.
Harnessing the synergistic effect of CuO@Fe3O4/n-Si for high-efficiency photodiodes. Journal of Physics and Chemistry of Solids. https://doi.org/10.1016/j.jpcs.2024.112359.

Exploring the antimicrobial activity of hydrothermally synthesized copper pyrophosphate nanoflakes. Journal of the Indian Chemical Society. https://doi.org/10.1016/j.jics.2024.101429.
Z-scheme driven charge transfer in g-C3N4/α-Fe2O3 nanocomposites enabling photocatalytic degradation of crystal violet and chromium reduction. Surfaces and Interfaces. https://doi.org/10.1016/j.surfin.2024.105299.
Building a novel noble metal-free Cu3P/ZnS/g-C3N4 ternary nanocomposite with multi interfacial charge transfer pathways for highly enhanced photocatalytic water splitting. Fuel. https://doi.org/10.1016/j.fuel.2024.131907.
Praseodymium doping-induced band structure tunning in bismuth ferrite (Bi1-Pr FeO3) nanofibers for the enhanced photocatalytic properties. Surfaces and Interfaces. https://doi.org/10.1016/j.surfin.2024.104937.
Ethylene Elimination Using Activated Carbons Obtained from Baru (Dipteryx alata vog.) Waste and Impregnated with Copper Oxide. Molecules. https://doi.org/10.3390/molecules29122717.
Sustainable synthesis, superior performance: Nanoflower-like α-Bi2O3 from solvent-free solid state for photocatalytic crystal violet degradation. Journal of the Taiwan Institute of Chemical Engineers. https://doi.org/10.1016/j.jtice.2024.105413.
Impact of Copper(II)-Imidazole Complex Modification on Polycrystalline TiO2: Insights into Formation, Characterization, and Photocatalytic Performance. Catalysts. https://doi.org/10.3390/catal14030169.
Goethite (α-FeOOH) nanoparticles wrapped on reduced graphene oxide nanosheet for sensitive electrochemical detection of arsenic(III). Ceramics International. https://doi.org/10.1016/j.ceramint.2023.11.275.

Ferrihydrite − Graphene oxide foams as an efficient adsorbent for Arsenic(III) removal from an aqueous solution. Inorganic Chemistry Communications. https://doi.org/10.1016/j.inoche.2023.110892.
Synergistic impact of nanoarchitectured GQDs-AgNCs(APTS) modified glassy carbon electrode in the electrochemical detection of guanine and adenine. Journal of Electroanalytical Chemistry. https://doi.org/10.1016/j.jelechem.2023.117302.
Evidence of Synergy Effects between Zinc and Copper Oxides with Acidic Sites on Natural Zeolite during Photocatalytic Oxidation of Ethylene Using Operando DRIFTS Studies. Catalysts. https://doi.org/10.3390/catal13030610.
The Effect of Visible Light on the Postharvest Life of Tomatoes (Solanum lycopersicum L.). Horticulturae. https://doi.org/10.3390/horticulturae9010094.

Investigation of photo-/electrocatalytic activity of hydrothermal synthesized novel copper ion-modulated bifunctional NiTe2 nanoflakes. Surfaces and Interfaces. https://doi.org/10.1016/j.surfin.2022.102124.
Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater. Nanomaterials. https://doi.org/10.3390/nano12071161.

Regeneration of odorous sulphur compound-exhausted activated carbons using wet peroxide oxidation: The impact of chemical surface characteristics. Process Safety and Environmental Protection. https://doi.org/10.1016/j.psep.2021.10.002.
Novel MoSe2–Ni(OH)2 nanocomposite as an electrocatalyst for high efficient hydrogen evolution reaction. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2021.07.071.
Catalytic Ozonation of Toluene over Acidic Surface Transformed Natural Zeolite: A Dual-Site Reaction Mechanism and Kinetic Approach. Catalysts. https://doi.org/10.3390/catal11080958.
Biocidal activity of citrus limetta peel extract mediated green synthesized silver quantum dots against MCF-7 cancer cells and pathogenic bacteria. Journal of Environmental Chemical Engineering. https://doi.org/10.1016/j.jece.2021.105089.

Treatment of landfill leachates from Fez city (Morocco) using a sequence of aerobic and Fenton processes. Scientific African. https://doi.org/10.1016/j.sciaf.2020.e00434.
Use of a Copper- and Zinc-Modified Natural Zeolite to Improve Ethylene Removal and Postharvest Quality of Tomato Fruit. Crystals. https://doi.org/10.3390/cryst10060471.
New insight of the influence of acidic surface sites of zeolite on the ability to remove gaseous ozone using operando DRIFTS studies. Microporous and Mesoporous Materials. https://doi.org/10.1016/j.micromeso.2019.109912.
Recent Advancements in the Understanding of the Surface Chemistry in TiO2 Photocatalysis. Surfaces. https://doi.org/10.3390/surfaces3010008.
Microwave-assisted synthesis of localized surface plasmon resonance enhanced bismuth selenide (Bi2Se3) layers for non-enzymatic glucose sensing. Journal of Electroanalytical Chemistry. https://doi.org/10.1016/j.jelechem.2019.113629.
Enhancement of ciprofloxacin degradation in aqueous system by heterogeneous catalytic ozonation. Environmental Science and Pollution Research. https://doi.org/10.1007/s11356-018-3559-9.

Design of active sites in zeolite catalysts using modern semiempirical methods: The case of mordenite. Computational and Theoretical Chemistry. https://doi.org/10.1016/j.comptc.2019.112572.
Simultaneous electrochemical determination of dopamine and epinephrine using gold nanocrystals capped with graphene quantum dots in a silica network. Microchimica Acta. https://doi.org/10.1007/s00604-019-3779-9.
Insights into the visible light photocatalytic activity of S-doped hydrated TiO2. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2019.05.103.
Ethylene adsorption onto natural and transition metal modified Chilean zeolite: An operando DRIFTS approach. Microporous and Mesoporous Materials. https://doi.org/10.1016/j.micromeso.2018.07.043.
Effect of doping natural zeolite with copper and zinc cations on ethylene removal and postharvest tomato fruit quality. Chemical Engineering Transactions. https://doi.org/10.3303/CET1975045.
Oxygen vacancies in nano-sized TiO2 anatase nanoparticles. Solid State Ionics. https://doi.org/10.1016/j.ssi.2019.115009.
Quantum size effect and visible light activity of anatase nanosheet quantum dots. Journal of Photochemistry and Photobiology A: Chemistry. https://doi.org/10.1016/j.jphotochem.2019.05.001.
Self-assembled reduced graphene oxide-TiO2 nanocomposites: Synthesis, DFTB+ calculations, and enhanced photocatalytic reduction of CO2 to methanol. Carbon. https://doi.org/10.1016/j.carbon.2019.03.019.

Catalytic Ozonation of Toluene Using Chilean Natural Zeolite: The Key Role of Brønsted and Lewis Acid Sites. Catalysts. https://doi.org/10.3390/catal8050211.
New evidence of the effect of the chemical structure of activated carbon on the activity to promote radical generation in an advanced oxidation process using hydrogen peroxide. Microporous and Mesoporous Materials. https://doi.org/10.1016/j.micromeso.2017.09.018.
Gaseous ozone decomposition over high silica zeolitic frameworks. The Canadian Journal of Chemical Engineering. https://doi.org/10.1002/cjce.23141.
Nanostructured BiOI for air pollution control: Microwave-assisted synthesis, characterization and photocatalytic activity toward NO transformation under visible light irradiation. Materials Science in Semiconductor Processing. https://doi.org/10.1016/j.mssp.2018.04.045.
Removal of textile dyes from aqueous solutions using low cost Moroccan clay. IOP Conference Series: Earth and Environmental Science. https://doi.org/10.1088/1755-1315/161/1/012009.
Solvothermal Synthesis and Photocatalytic Activity of BiOBr Microspheres with Hierarchical Morphologies. Acta Chimica Slovenica. https://doi.org/10.17344/acsi.2018.4181.

Adsorption of a cationic dye from aqueous solution using low-cost Moroccan diatomite: adsorption equilibrium, kinetic and thermodynamic studies. Desalination and Water Treatment. https://doi.org/10.5004/dwt.2017.20553.
BiOBr microspheres for photocatalytic degradation of an anionic dye. Solid State Sciences. https://doi.org/10.1016/j.solidstatesciences.2017.01.001.
Role of oxygen-containing functional surface groups of activated carbons on the elimination of 2-hydroxybenzothiazole from waters in A hybrid heterogeneous ozonation system. Journal of Advanced Oxidation Technologies. https://doi.org/10.1515/jaots-2016-0170.
Synthesis and characterization of BiOI microspheres under standardized conditions. Journal of Materials Science. https://doi.org/10.1007/s10853-016-0390-x.
Use of coagulation-flocculation process for the treatment of the landfill leachates of Casablanca city (Morocco). Journal of Materials and Environmental Science.
Use of combination of coagulation and adsorption process for the landfill leachate treatment from Casablanca city. Desalination and Water Treatment. https://doi.org/10.5004/dwt.2017.20743.
Zeolites as recyclable adsorbents/catalysts for biogas upgrading: Removal of octamethylcyclotetrasiloxane. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2016.09.017.

Application of D-optimal design for modelling the adsorption of Cl-VOCs onto modified natural zeolites,Aplicación del diseño D-optimal en la modelación de la adsorción de COVs-Cl sobre zeolitas naturales chilenas modificadas. Ingeniare.
Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination. Journal of Environmental Sciences. https://doi.org/10.1016/j.jes.2015.05.021.
Removal of Benzothiazole from Contaminated Waters by Ozonation: The Role of Direct and Indirect Ozone Reactions. Journal of Advanced Oxidation Technologies.
Toluene, Methanol and Benzaldehyde Removal from Gas Streams by Adsorption onto Natural Clay and Faujasite-Y type Zeolite. Acta Chimica Slovenica. https://doi.org/10.17344/acsi.2016.2643.

Control of released volatile organic compounds from industrial facilities using natural and acid-treated mordenites: The role of acidic surface sites on the adsorption mechanism. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2014.01.044.
Oxidative regeneration of toluene-saturated natural zeolite by gaseous ozone: The influence of zeolite chemical surface characteristics. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2014.04.006.
Removal of volatile organic compounds (VOCs) using adsorption process onto natural clays. Volatile Organic Compounds: Emission, Pollution and Control.

Ozonation of pentylacetate contaminated waters from textile care industry. Obras y Proyectos. https://doi.org/10.4067/S0718-28132013000100004.
Role of Lewis acid sites of ZSM-5 zeolite on gaseous ozone abatement. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2013.07.002.

BTX abatement using Chilean natural zeolite: the role of Brønsted acid sites. Water Science and Technology. https://doi.org/10.2166/wst.2012.390.
Influence of Volcanic Sand Surface Hydroxyl Groups on the Heterogeneous Catalytic Ozonation of Methylene Blue Contaminated Waters. Journal of Advanced Oxidation Technologies.
Methylene blue removal from contaminated waters using heterogeneous catalytic ozonation promoted by natural zeolite: mechanism and kinetic approach. Environmental Technology. https://doi.org/10.1080/09593330.2011.650222.
Natural zeolite reactivity towards ozone: The role of compensating cations. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2012.04.067.
Role of surface hydroxyl groups of acid-treated natural zeolite on the heterogeneous catalytic ozonation of methylene blue contaminated waters. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2012.09.069.

Impacto del tratamiento con ozono sobre las propiedades superficiales del carbón activado. Ingeniare. Revista chilena de ingeniería. https://doi.org/10.4067/S0718-33052011000200003.
Influence of Chemical Surface Characteristics of Natural Zeolite on Catalytic Ozone Abatement. Ozone: Science & Engineering. https://doi.org/10.1080/01919512.2011.581145.
Natural Zeolite Reactivity Towards Ozone: The Role of Acid Surface Sites. Journal of Advanced Oxidation Technologies.

Effect of Zeolite Chemical Surface Properties on Catalytic Ozonation of Methylene Blue Contaminated Waters. Ozone: Science & Engineering. https://doi.org/10.1080/01919512.2010.501197.
Heterogeneous catalytic ozonation of cationic dyes using volcanic sand. Water Science and Technology. https://doi.org/10.2166/wst.2010.257.
INFLUENCIA DE LA COMPOSICIÓN QUÍMICA SUPERFICIAL DEL CARBÓN ACTIVADO EN LA ADSORCIÓN DE BENZOTIAZOLES. Ingeniare. Revista chilena de ingeniería. https://doi.org/10.4067/S0718-33052010000100005.

Catalytic ozone aqueous decomposition promoted by natural zeolite and volcanic sand. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2008.10.093.
Cationic dyes removal using ozone, natural zeolite, and ozone/zeolite,Eliminación de colorantes catiónicos usando ozono, zeolita natural y ozono/zeolita. Ingeniare.
ELIMINACIÓN DE COLORANTES CATIÓNICOS USANDO OZONO, ZEOLITA NATURAL Y OZONO/ZEOLITA. Ingeniare. Revista chilena de ingeniería. https://doi.org/10.4067/S0718-33052009000300009.
Methylene blue removal from contaminated waters using O3, natural zeolite, and O3/zeolite. Water Science and Technology. https://doi.org/10.2166/wst.2009.208.

Heterogeneous catalytic ozonation of benzothiazole aqueous solution promoted by volcanic sand. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2007.09.057.

Heterogeneous and homogeneous catalytic ozonation of benzothiazole promoted by activated carbon: Kinetic approach. Chemosphere. https://doi.org/10.1016/j.chemosphere.2006.04.027.
Ozonation of benzothiazole saturated-activated carbons: Influence of carbon chemical surface properties. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2006.03.025.

Advanced treatment of benzothiazole contaminated waters: comparison of O-3, AC, and O-3/AC processes. Water Science and Technology.

Effect of ozonation on the activated carbon surface chemical properties and on 2-mercaptobenzothiazole adsorption. Latin American Applied Research.
Kinetic study of reactions between ozone and benzothiazole in water. Water Science and Technology.

Effect of Ozone Treatment on Surface Properties of Activated Carbon. Langmuir. https://doi.org/10.1021/la010920a.

Ozonation of 1,2-dihydroxybenzene in the presence of activated carbon. Water Science and Technology.