Generation of hydrogen

Ebook "Catalysis for alternative energy generation" summarizes the role and the possibilities of catalysis in the production of new energy carriers and in the utilization of different energy sources. The main goal of this work is to go beyond those results discussed in recent literature by identifying new developments that may lead to breakthroughs in the production of alternative energy. The book discusses the use of biomass or biomass derived materials as energy sources, hydrogen formation in methanol and ethanol reforming, biodiesel production, and the utilization of biogases.

543p coduathanh1122 27-03-2024 5 1   Download

We study the proton conductivity properties of MOF-801. We find that MOF-801 possesses intrinsic proton carrier sites, m3-OH groups, in clusters yielding the generation of hydrogen-bonding networks with guest water molecules at high relative humidity (RH), facilitating proton transport.

7p viberbers 09-08-2023 3 3   Download

Amongst soft chemical synthetic routes, the ionothermal synthesis method (using an ionic liquid) has attracted research tremendously due to their remarkable features especially in the case of TiO2 nanoparticles synthesis.

7p viberbers 09-08-2023 4 3   Download

The TiO2 nanofibres (NFs), prepared with the electrospinning method, acted as the photoanode in a photoelectrochemical cell (PEC) for hydrogen generation. The fabrication parameters of Ti/PVP (polyvinylpyrrolidone) fibres were determined with the field-emission scanning electron microscopy (FESEM) method.

7p vispiderman 15-06-2023 6 2   Download

The photocatalytic hydrogen production of TiO2 is limited by the rapid rate charge recombination. The co-operation of CuxO (CuO or Cu2O) and TiO2 is an effective method to overcome this drawback. In this study, the CuxO/TiO2 composite structure is fabricated by hydrothermal method and chemical deposition technique.

8p viaudi 04-08-2022 5 1   Download

We reported a facile one-pot synthesis of bimetallic CoCu nanoparticles (NPs) anchored on graphene hydrogel (GH-CoCu) as catalysts in hydrogen generation from the hydrolysis of ammonia borane (HAB). The presented novel one-pot method composed of the reduction of the mixture of graphene oxide, cobalt(II), and copper(II) acetate tetrahydrates by aqueous ethylene glycol solution in a teflon-coated stainless-steel reactor at 180 °C. The structure of the yielded GH-CoCu nanocatalysts was characterized by TEM, SEM, XRD, XPS, and ICP-MS.

14p langthannam 29-12-2021 10 0   Download

This observation indicates: i) The formation of the lamellar grains; ii) The rapid changes in characteristic sizes of the lamellar grains compared with the lamellar stacks; and iii) The newly generated phases consisting of only the graft materials. These findings explain why the lamellar grains and the graft chains play an important role in the higher proton conductivity and compatible tensile strengths of the membranes, compared with Nafion, at the immersed and severe operating conditions.

9p meyerowitz 25-12-2021 9 1   Download

Potato (Solanum tuberosum L.) growth, development and production are sensitive to abiotic stress conditions, yet studies about investigation of stress response of potato plants in regulation of gene expression level are limited. The aim of this study was to identify the role of newly identified Novel_105 miRNA in contrasting potato cultivars (tolerant Unica and sensitive Russet Burbank) in response to heat, drought and combined heat and drought stresses using transgenic approach.

16p tudichquannguyet 29-11-2021 12 2   Download

Treatment of hydrogen peroxide with a polymer-supported hypervalent iodine compound, poly[4-diacetoxyiodo] styrene (PDAIS), generates singlet molecular oxygen ( 1 O2). Singlet oxygen generation was proved by trapping with typical organic compounds such as conjugated dienes, aromatic dienes, and electron-rich alkene. When compared to monomer analogue, the use of PDAIS in peroxidation of substrates gave slightly better yields (45%–96%). Regeneration and reuse of PDAIS showed similar activity. The mechanism underlying generation of singlet oxygen and reaction scope was examined.

9p tudichquannguyet 29-11-2021 7 1   Download

Boron-based materials are potential solutions in the field of energy. They have been regarded as hydrogen storage materials, liquid fuels of direct liquid-fed fuel cells (DLFCs), electrolytes of battery, and/or energetic substances. A typical example is sodium borohydride (NaBH4). In sodium hydroxide-stabilized aqueous solutions, it is seen as an efficient H2 generator or a performing fuel of DLFCs. Actually, it plays a wider role; it is also the precursor of several boron-based materials of interest in the field of energy.

28p tudichquannguyet 29-11-2021 8 0   Download

One of the most vital chemicals, which is not only found naturally but can also be synthesized in the laboratory, is formic acid (FA). FA is a key byproduct of several second-generation biorefinery processes as well, and it is used in several pharmaceutical and industrial applications. Recently, another significant use of FA that is taking the lead is as a form of fuel.

11p tudichquannguyet 29-11-2021 15 1   Download

In this study, thin films of Co, Ni, Pd, and Pt were prepared on Co3O4 support material in pellet form using the direct current (DC) magnetron sputtering method for use as catalysts for hydrogen generation from NaBH4. Characterization of the catalysts was carried out using X-ray diffraction (XRD), scanning electronic microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). According to cross-sectional SEM images, catalyst thicknesses were observed in the range of approximately 115.3–495.8 nm. The particle sizes were approximately 25.0, 21.4, 33.9, and 9.

12p tudichquannguyet 29-11-2021 8 1   Download

In this work, cold plasma jet system and used it to effectively remove Rhodamine B in the solution. We showed that the main oxidation substance responsible to remove Rhodamine B is the hydroxyl radical (•OH). By studying the effects of – the hydrogen peroxide (H2O2) concentration in the initial and later produced in the solution, the plasma power, and the Ar gas flow speed – on the dye remove rate, we identified 2 main reaction pathways to generate hydroxyl radical (•OH).

8p trinhthamhodang1218 18-03-2021 14 2   Download

Alternative energy production through biomass gasification produces combustible gases, such as carbon monoxide, hydrogen, and methane. These gases can be used for generation of direct heat, electricity, or liquid fuels through the Fischer Tropsch process.

16p gaocaolon9 22-12-2020 11 1   Download

Designing an effective photocatalyst for hydrogen (H2) performance under visible irradiation with a decrease the bandgap energy of semiconductor has been considered as an essential aspect in boosting the performance of photocatalytic reactions for hydrogen performance from the water-splitting process. Herein, we focus on evaluating the role of doping with Ir into SrTiO3 structure fabricated by the hydrothermal method for H2 generation.

8p trinhthamhodang9 04-12-2020 11 1   Download

The sandwich-structured CdS/Au/TiO2 nanofibers (NFs) act as a photoanode in the photoelectrochemical cell (PEC) for hydrogen generation by splitting water. The gold nanoparticles sandwiched between the TiO2nanofibers and the CdS quantum dots (QDs) layers play an important role in enhancing the solar-to-chemical-energy conversion efficiency.

9p nguaconbaynhay9 03-12-2020 11 3   Download

The present work reveals the green combustion preparation of the Ag-doped ZnO nanoparticles (NPs) using turmeric root extract as a fuel. The structure and morphology of Ag-doped ZnO NPs were investigated by several analytical techniques such as XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy), TEM (Transmission Electron Microscopy), FTIR (Fourier Transform Infrared), Raman, XPS (XRay Photoelectron Spectroscopy), and UV-Visible Spectroscopy (UVeVis).

7p tamynhan4 06-09-2020 18 3   Download

In this study, we expand to investigate a more complicated system, H+ 2 molecule in the superposition of the ground and second excited states, exposed to an ultrashort intense laser pulse by numerically solving the time-dependent Schrodinger equation.

12p nguyenxuankha_bevandan 14-08-2020 21 2   Download

This paper study the coherent Stokes generation in a transient stimulated Raman scattering regime by Hydrogen gas-filled hollow-core photonic crystal fibres configuration. The temporal and spatial evolution of the pump and Stokes field envelopes as well as the coherence and population inversion are numerically calculated. The Stokes generation efficiency and the influence of pump pulse width and gas pressure on the energy exchange along fibre are investigated.

8p nguyenxuankha_bevandan 14-08-2020 11 1   Download

Reactive oxygen species (ROS), including hydrogen peroxide, drive differentiation of normal fibroblasts into activated fibroblasts, which can generate high amounts of hydrogen peroxide themselves, thereby increasing oxidative stress in the microenvironment.

13p vikuala271 13-06-2020 7 0   Download