Simulation of energy conversion in a plant of photocatalysts water splitting for hydrogen fuel

Nong, Guangzai; Li, Ming; Chen, Yiyi; Zhou, Zongwen; Wang, Shuangfei

doi:10.1016/j.energy.2014.12.059

Cited by 11 publications

(5 citation statements)

References 17 publications

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“…The correctness of the result contracting to GFEDF is supported by the facts that: in the fields including artificial photosynthesis [24,25], photo catalyst reaction [19,20,26,27], enzyme catalyzed reaction [28] and electrocatalytic reaction [29,30], many nonspontaneous reactions can be achieved without work from outside environment. Instead of work, light and heat are the energy to make the reactions occur under catalyst.…”

Section: Verification Of the Results Contracting To Gfedfmentioning

confidence: 81%

“…Instead of work, light and heat are the energy to make the reactions occur under catalyst. Taking water splitting as an example [27], it can occur under catalysts by photonic energy, consuming not any work from outside environment. Where, the work is zero, and the change of Gibbs free energy is greater than zero; getting the result of " 0 G W   " by comparison.…”

Section: Verification Of the Results Contracting To Gfedfmentioning

confidence: 99%

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A Supplement of GFEDF Based on Water Splitting for Hydrogen Fuels

Nong¹,

Min²,

Yin³

et al. 2019

Proceedings of the 2019 2nd International Conference on Sustainable Energy, Environment and Information Engineering (SEEIE 2019

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Hydrogen fuel is a kind of clean energy that can be generated by photo catalyzing water splitting. It is interesting to investigate the case contrasting to Gibbs free energy determination formula (GFEDF). Through calculation and theoretical analysis, results are: (1) there is not electric energy and other form of work consumed in photo catalyzing water splitting, hence, the work from outside environment is less than the change of Gibbs free energy; contracting to GFEDF. (2) GFEDF works with a reaction when absorbed heat is less than the heat for entropy change; GFEDF does not work with a reaction when absorbed heat is more than the heat for entropy change. Thereby, work is not always more than the change of Gibbs free energy to make a nonspontaneous reaction occur.

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Section: Verification Of the Results Contracting To Gfedfmentioning

confidence: 81%

Section: Verification Of the Results Contracting To Gfedfmentioning

confidence: 99%

A Supplement of GFEDF Based on Water Splitting for Hydrogen Fuels

Nong¹,

Min²,

Yin³

et al. 2019

Proceedings of the 2019 2nd International Conference on Sustainable Energy, Environment and Information Engineering (SEEIE 2019

Self Cite

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“…Very recently, worldwide concerns about the energy crisis and environmental pollution have stimulated intensive attention, which is essential to pursue sustainable and renewable energy . Catalytic hydrogen generation from hydrogen‐storage materials is regarded as a promising way to address the energy and environmental crisis, as hydrogen has many advantages, including the fact that it is lightweight, can be found in high abundance, and has high chemical energy per mass . Among numerous hydrogen‐storage materials, hydrous hydrazine (N 2 H 4 ⋅ H 2 O) has attracted much attention because of its high hydrogen density of 8.0 wt %, low molecular weight of 50.1 g mol −1 , and excellent stability under ambient conditions .…”

Section: Figurementioning

confidence: 99%

Highly Dispersed Bimetallic Nanoparticles Supported on Titanium Carbides for Remarkable Hydrogen Release from Hydrous Hydrazine

et al. 2018

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The catalytic decomposition of hydrous hydrazine (N2H4⋅H2O) is considered a promising candidate for the fuel‐cell field, but sluggish reaction kinetics dramatically impede its practical application. In this study, bimetallic RhNi nanoparticles were successfully anchored on titanium carbides (MXene) by a one‐step wet‐chemical method to build superior catalysts for the decomposition of hydrous hydrazine (N2H4⋅H2O), a compound that can be used for chemical hydrogen storage. The synthesized RhNi/MXene catalysts were characterized by X‐ray photoelectron spectroscopy, transmission electron microscopy, high‐angle annular dark‐field scanning transmission electron microscopy, and inductively coupled plasma atomic emission spectroscopy. As a result of the particles size and a synergistic effect, the Rh0.8Ni0.2/MXene nanocatalyst demonstrated 100 % selectivity to H2, excellent stability, and high reaction kinetics with a turnover frequency of 857 h−1 for the decomposition of N2H4⋅H2O in alkaline solution.

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“…In the existence of catalysts and a light source, the H 2 O molecule splits during this reaction, liberating H 2 and O 2 5 . Despite the obvious benefits of using photocatalytic water splitting to produce H 2 , this method is currently regarded as insufficiently efficient for large-scale use 6 , 7 . One key element in enhancing this process is said to be the formation of the catalyst with increased activity.…”

Section: Introductionmentioning

confidence: 99%

Experimental, predictive and RSM studies of H2 production using Ag-La-CaTiO3 for water-splitting under visible light

Ragab,

Elkatory,

Hassaan

et al. 2024

Sci Rep

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Ag-La-CaTiO3 was used in place of sacrificial agents to assess the influence of operational factors on hydrogen generation in a photocatalytic water splitting system. After being synthesized, the physicochemical features of this substance were accurately described. Several characterization techniques including UV–Vis spectroscopy, FTIR, XRD, XPS, EDX, SEM, TGA, DRS and BET were applied to study the prepared Ag-La-CaTiO3 photocatalyst. Ag-La-CaTiO3 shows a band in the visible wavelength between 400 and 800 nm at < 560 nm compared to the main CaTiO3 band at 350 nm. Ag 4d5s electrons transition to the conduction band (CB), which is responsible for the absorption band at ~ 560 nm (> 2.21 eV). The effects of catalyst concentration, light intensity, and beginning solution pH on the H2 generation rate may all be evaluated simultaneously using experimental design procedures. Up to a maximum threshold, where a drop in the rate of gas evolution occurs, it was confirmed that the increase in catalyst dose positively affects system productivity. The initial solution pH plays a crucial role in H2 production, and pH = 4 and 10 are the optimum pH with a higher yield of H2 production. The highest total H2 production rate, 6246.09 μmol, was obtained using a catalyst concentration of 700 mg and solution pH equal to 10 under 1200 W Vis lamp for 3 h. For prediction and optimization, a D-Optimal design was applied and the optimal results were pH 4, the catalyst dose of 645.578 mg and 1200 W with H2 production of 6031.11 μmol.

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Simulation of energy conversion in a plant of photocatalysts water splitting for hydrogen fuel

Cited by 11 publications

References 17 publications

A Supplement of GFEDF Based on Water Splitting for Hydrogen Fuels

A Supplement of GFEDF Based on Water Splitting for Hydrogen Fuels

Highly Dispersed Bimetallic Nanoparticles Supported on Titanium Carbides for Remarkable Hydrogen Release from Hydrous Hydrazine

Experimental, predictive and RSM studies of H2 production using Ag-La-CaTiO3 for water-splitting under visible light

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