Production of Hydrogen-Rich Synthesis Gas by Pulsed Atmospheric Plasma Submerged in Mixture of Water with Ethanol

Bárdoš, Ladislav; Baránková, Hana; Bardos, A.

doi:10.1007/s11090-016-9766-6

Cited by 32 publications

(10 citation statements)

References 23 publications

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“…The temperature of cathode plasma was estimated to be 2000-3000 K according to previous studies [30,31]. Afterwards, cathodic plasma dissociated water molecules to produce the hydrogen environment at/near the plasma region [32]. After 1 h of liquid-plasma treatments, the color of 300 g anatase titania was varied from white to dark gray, and the digital pictures of dry powder samples are shown in Figure 1C.…”

mentioning

confidence: 99%

Liquid-Plasma Hydrogenated Synthesis of Gray Titania with Engineered Surface Defects and Superior Photocatalytic Activity

Zhang

Feng

et al. 2020

Nanomaterials

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Defect engineering in photocatalysts recently exhibits promising performances in solar-energy-driven reactions. However, defect engineering techniques developed so far rely on complicated synthesis processes and harsh experimental conditions, which seriously hinder its practical applications. In this work, we demonstrated a facile mass-production approach to synthesize gray titania with engineered surface defects. This technique just requires a simple liquid-plasma treatment under low temperature and atmospheric pressure. The in situ generation of hydrogen atoms caused by liquid plasma is responsible for hydrogenation of TiO 2 . Electron paramagnetic resonance (EPR) measurements confirm the existence of surface oxygen vacancies and Ti 3+ species in gray TiO 2−x . Both kinds of defects concentrations are well controllable and increase with the output plasma power. UV-Vis diffused reflectance spectra show that the bandgap of gray TiO 2−x is 2.9 eV. Due to its extended visible-light absorption and engineered surface defects, gray TiO 2−x exhibits superior visible-light photoactivity. Rhodamine B was used to evaluate the visible-light photodegradation performance, which shows that the removal rate constant of gray TiO 2−x reaches 0.126 min −1 and is 6.5 times of P25 TiO 2 . The surface defects produced by liquid-plasma hydrogenation are proved stable in air and water and could be a candidate hydrogenation strategy for other photocatalysts.Nanomaterials 2020, 10, 342 2 of 13 light absorption, prompting superior performances in photodegradation and water splitting [13][14][15]. The enhanced solar light absorption of black TiO 2 is ascribed to additional intermediate electronic states (e.g., V o or Ti 3+ states) and disorder surface caused by hydrogenation [16][17][18]. More importantly, defect engineering, for instance defects concentration and distribution, also plays an important role in tuning photocatalytic activity of black TiO 2 . It was reported that the high defect ratio of surface to bulk can significantly enhance the photoactivity owing to preferential diffusion from bulk to surface of photoinduced charges [19,20]. However, surface defects are not stable enough as it can be spontaneously oxidized in air and water. So far, mainstream strategies to synthesize black/gray TiO 2−x are relied on the reduction of pristine stoichiometric TiO 2 [20][21][22][23][24], such as annealing under high pressures of H 2 or NH 3 , high-energy particle bombardment (hydrogen plasma, laser plasma, or high-energy electrons), and chemical reduction with reducing agent in vacuum. Apparently, it is significant and desirable to develop a simple and feasible strategy for massive production of black/gray TiO 2−x with engineered surface defects and related abundant solar absorption.Hereafter, we conduct a one-pot synthesis of gray TiO 2−x with large solar harvesting and engineered surface defects using a liquid-plasma technology at room temperature and atmospheric pressure [25]. There has recently been increasing interest in liquid-plasma...

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mentioning

confidence: 99%

Liquid-Plasma Hydrogenated Synthesis of Gray Titania with Engineered Surface Defects and Superior Photocatalytic Activity

Zhang

Feng

et al. 2020

Nanomaterials

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“…After few chargedischarge cycles, nanoscale spinel islands are formed and float randomly on the bulk particle. The nucleation and growth of the spinel domains eventually amorphized the material, create nanopores and thread-like cracks that widen and deepen with cycling [86]. (iii) Modulation in Redox Contribution: Synergistic contribution from cationic and anionic redox processes helps the LMR-LO cathodes for delivering abnormally high capacity.…”

Section: Figurementioning

confidence: 99%

Untitled

2022

JEPT

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The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2021. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to the service Publons (https://publons.com) to receive recognition. Of course, in these initiatives we are careful not to compromise reviewer confidentiality. Many reviewers see their work as a voluntary and often unseen part of their role as researchers. We are grateful to the time reviewers donate to our journals and the contribution they make.The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2021.We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a certificate of recognition directly from our submission system. Additionally, reviewers can sign up to the service Publons JEPT

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“…The installations used for Syngas production via biomass gasification are called Macro-TG. They consist of an electrically heated furnace and either a manual or an automatic system, which allows the samples to be placed inside the furnace at a certain time [80,[85][86][87]. Plasma technology can be used to achieve the same goal.…”

Section: Co 2 As a Renewable Source Of Energy Via Biogas Productsmentioning

confidence: 99%

“…Plasma technology can be used to achieve the same goal. The temperature-induced by the electric arc in hydrogen plasma is high (̰ ~1,500 °C ), resulting in the production of syngas (CO and H 2 ) with a conversion rate of about 100% [85][86][87]. The efficiency of generating electricity and hydrogen-based on hydrogen plasma and carbon fuel cell technology varies between 87% and 92%, which is more than twice that of the installations fed with coal and based on conventional steam.…”

Section: Co 2 As a Renewable Source Of Energy Via Biogas Productsmentioning

confidence: 99%

Converting CO2 from a Harmful Gas to a Renewable Source of Matter and Energy: A Review

Lâjili¹

2021

JEPT

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The emission of greenhouse gases, specifically CO2, has reached non-acceptable levels causing global warming with adverse effects. Owing to rigorous ongoing research, these harmful substances might be converted to beneficial sources. The main objective of this study was to review the most effective processes that might utilize carbon dioxide to produce various substances, chemicals, and energy. For this, different existing and projected short-term and long-term strategies have been presented and discussed. Specifically, processes like the artificial tree of Lackner to capture CO2, chemical looping combustion (CLC), the application of CO2 in the food and processing industry, wastewater treatment, supercritical and refrigerant CO2, hydrogenation of CO2, the cultivation of microalgae, thermolysis, electrolysis, and photoelectrocatalysis techniques for producing hydrogen and biofuels, based on thermochemical processes, are the most promising ways to reduce and reuse CO2. Such behavioral changes can lead to the exchange of CO2 between natural reservoirs and help to maintain CO2 equilibrium among the atmosphere, the upper mixed layer of the sea, and the deep sea. Consequently, the mean global temperature and the climate are directly affected.

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Production of Hydrogen-Rich Synthesis Gas by Pulsed Atmospheric Plasma Submerged in Mixture of Water with Ethanol

Cited by 32 publications

References 23 publications

Liquid-Plasma Hydrogenated Synthesis of Gray Titania with Engineered Surface Defects and Superior Photocatalytic Activity

Liquid-Plasma Hydrogenated Synthesis of Gray Titania with Engineered Surface Defects and Superior Photocatalytic Activity

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Converting CO2 from a Harmful Gas to a Renewable Source of Matter and Energy: A Review

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