A5032791420- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- Transition Metal Oxide Nanomaterials
- Gas Sensing Nanomaterials and Sensors
- Metal Extraction and Bioleaching
- Solar Thermal and Photovoltaic Systems
- Advanced Machining and Optimization Techniques
- Corrosion Behavior and Inhibition
- Iron oxide chemistry and applications
- Ga2O3 and related materials
- Quantum Dots Synthesis And Properties
- Industrial Automation and Control Systems
- Environmental and Ecological Studies
- Material Selection and Properties
- Arsenic contamination and mitigation
- Sugarcane Cultivation and Processing
- Electronic and Structural Properties of Oxides
- Urban Heat Island Mitigation
- Structural Integrity and Reliability Analysis
- Graphene and Nanomaterials Applications
- Water Quality Monitoring and Analysis
- Metallurgical Processes and Thermodynamics
- Occupational Health and Safety in Workplaces
- Solar-Powered Water Purification Methods
Autonomous University of Campeche
2017-2023
Universidad Central "Marta Abreu" de las Villas (UCLV)
2009-2021
University of California, Davis
2017-2018
Center for Research and Advanced Studies of the National Polytechnic Institute
2014-2018
CIUDAD
2018
Universidad Central
2012
In this work, the relationship between photodegradation rate of methylene blue (MB) and effective surface charge titania nanoparticles (TiO2 NPs) in an aqueous solution is addressed. Colloidal dispersions were prepared from TiO2 NPs (4–10 nm) for heterogenous photocatalysis test. The dispersion properties such as pH, hydrodynamic diameter, zeta potential, isoelectric point studied. Acidic (pH = 3.6–4.0) with a positive potential smaller diameter exhibit larger colloidal stability...
One of the principal challenges for solar-driven hydrogen production via water splitting is to improve solar-to-hydrogen conversion efficiency. We have employed combinatorial chemistry using a materials inkjet printer, and selected CuBi2O4 as promising p-type material. The steady-state photocurrent corresponding reduction 280 nm film at 0.2 V (RHE) was about 0.12 mA cm–2, significantly lower than that attainable 2 eV band gap semiconductor. applied intensity-modulated spectroscopy (IMPS)...
Any optimization of dye-sensitized solar cells (DSSCs) must consider the energetics and charge transfer kinetics dye, substrate, redox couple. Here, we use surface photovoltage spectroscopy to probe photochemical efficiency in fluorenyl-thiophene dye (OD-8)-sensitized ZnO films. Discrete events at dye–ZnO interface dye– I–/I3– or [Co(2,2′-bipyridyl)3]3+/2+ interfaces can be observed as negative under excitation 1.7 eV (460 nm). Without a couple, separation ZnO/dye is only 4% effective,...
Abstract The most frequently studied functionalities of porous WO 3 particle systems—namely their electrochromic and photocatalytic properties—are intimately related to the wanted or unwanted action defects in material. Here, we report on generation three types electrodes: solid/solid interfaces between adjacent aggregates, generated situ upon photoinduced electron accumulation, resulting from tungsten bronze formation. Depending degree aggregate interconnection, observe a beneficial, albeit...
The annual thermal evaluation of an open double-glazing unit (ODGU) is presented. ODGU was modelled using two configurations: DCC (clear glass + air clear glass) and DCA absorbent glass). Numerical simulations were performed for the warmest design-day on each month 2016 in four different climatic conditions Mexico. pseudo-transient carried out in-house code based finite volume method. To obtain results, 5856 computational runs necessary. From configuration observed to show best performance...
Dineohexyl phosphinic acid (DINHOP) is a popular amphiphilic molecular insulator considered as the most efficient co-adsorbent (co-grafter) for improvement of photovoltaic performance TiO2 based hybrid solar cells. Although effect its incorporation on cell has been well demonstrated, mechanisms through which it affects and electrodynamic parameters cells are not yet clear. Here we re-examine mechanism DINHOP dye-sensitized widely believed to inhibit (passivate) recombination across...
Graphene oxide (GO) was prepared by modified Hummer's method to produce reduced graphene (RGO) following standard thermal and chemical reduction processes. Prepared RGO colloids were utilized fabricate films over glass FTO coated substrates through drop-coating. A systematic study performed evaluate the effect of degree on optical electrical properties film. We demonstrate that both process (thermal chemical) similar behaviors. However, fabricated using chemically GO colloid render better...
Abstract. Electrochemistry is a key technology to synthesize, study and scale-up materials processes for applications in solar energy conversion systems. Mexico has had tradition of excellence electrochemistry research methodology development, this paper intends honor some the contributors subjects useful heat or electricity. We summarize use electrochemical techniques as tool deposition characterization, including analysis electrodeposition solutions mechanisms. In addition, we describe...
A pulsed electrodeposition procedure has been developed to prepare macroporous films of the semiconducting mineral simonkolleite, Zn 5 (OH) 8 Cl 2 ·H O, on glass/FTO substrates. The morphology is characterized by presence smooth, micron-sized hexagonal platelets, and relatively thick 6 μ m can be prepared in about 15 min. Simonkolleite transformed into crystalline, mesoporous ZnO using a low temperature thermal treatment (250 °C). While macrostructure platelets maintained, they become due...
The balance of the charge transfer and recombination kinetics photoelectrodes governs device efficiency for solar water splitting. Hematite ( α -Fe 2 O 3 ) is a photoanode typically used because advantages such as its abundance, low cost, multiple convenient deposition methods, an attractive bandgap energy; however, poor electrical properties prevent high energy to hydrogen conversion efficiencies. In this work, we evaluate compare several strategies address issue, using nanorod array...