Review of low-temperature plasma nitrogen fixation technology

Chen, Hang; Yuan, Dingkun; Wu, Angjian; Lin, Xiaoqing; Li, Xiaodong

doi:10.1007/s42768-021-00074-z

Cited by 63 publications

(35 citation statements)

References 100 publications

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“…For most children with simple adenoid and/or tonsillar hypertrophy, adenoidectomy and tonsillectomy are the most effective treatment modalities, with an effective rate of up to 90%. Low-temperature plasma knife tonsil adenoidectomy performer is to ablate the adenoid tissue at a lower temperature in the ion field by the energy generated by low-temperature plasma radiofrequency [ 7 ], and the study [ 8 ] showed that low-temperature plasma surgery has the characteristics of light pain, small trauma, and quick postoperative recovery, and its tip has multiple functions such as flushing, hemostasis, and ablation. It does not need to change the instrument during operation, and it can be easily operated even if the oropharyngeal space is narrow.…”

Section: Prefacementioning

confidence: 99%

Clinical Observation of Low-Temperature Plasma Knife Tonsil Adenoidectomy for Pediatric Snoring and Analysis of Influencing Factors

Guo¹,

Hu²

2022

Emergency Medicine International

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Objective. To investigate the clinical efficacy of low-temperature plasma knife tonsil adenoidectomy for pediatric snoring and to analyze the factors influencing the efficacy. Methods. 90 children with snoring who were scheduled for surgical treatment in our hospital from June 2020 to December 2021 were selected as the research objects. According to the random number table method, they were divided into control group (group C) and observation group (group O), with 45 cases in each group. The children in group C were treated with power cutting system to remove adenoids combined with conventional peeling of bilateral tonsils, while the children in group O were treated with low-temperature plasma adenoidectomy combined with bilateral tonsillectomy, and both the groups received psychological care, preoperative preparation, health guidance, postoperative posture care and close monitoring of vital signs during the perioperative period. The clinical efficacy, perioperative related indexes (including operation time, intraoperative bleeding, postoperative pain time, and hospital stay) were compared between the two groups. The apnea-hypopnea index (AHI), oxygen decrement index (ODI), longest apnea time (LAT), and lowest oxygen saturation (LSaO2) were measured before operation and 1 week after operation to evaluate the ventilatory function of the two groups. According to the curative effect, 90 children with snoring were divided into cure + significant effective group and valid + invalid group. The general data and preoperative biochemical indexes of the two groups were collected, and logistic regression model was used to analyze the related influencing factors of the curative effect. Results. The total effective rate of group O (100.00%, 45 cases) was significantly higher than that of group C (91.11%, 41 cases) (P < 0.05); the operative time, intraoperative bleeding, postoperative pain time, and hospitalization time of group O were shorter/less than those of group C; the AHI, ODI, and LAT of group O at 1 week after surgery were shorter/less than those of the control group; and LSaO2 was higher than that of group C. The differences were statistically significant (P < 0.05). Univariate analysis showed that there were significant differences in age, BMI, course of disease, preoperative AHI, preoperative LsaO2, and surgical method between cure + significant effective group and valid + invalid group (P < 0.05). Multivariate analysis showed that high BMI, high preoperative AHI, and power cutting system for adenoids combined with routine peeling of the bilateral tonsils were independent risk factors for postoperative outcome in children with obstructive sleep apnea syndrome (OSAS) (P < 0.05).

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Section: Prefacementioning

confidence: 99%

Clinical Observation of Low-Temperature Plasma Knife Tonsil Adenoidectomy for Pediatric Snoring and Analysis of Influencing Factors

Guo¹,

Hu²

2022

Emergency Medicine International

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“…Electrochemical fixation of nitrogen (N 2 ) powered by renewable energy has emerged as a promising approach toward green ammonia synthesis alternative to conventional high energy-consuming , and CO 2 -emission Haber–Bosch process. Nevertheless, the high dissociation energy of NN (941 kJ mol –1 ) and the limited solubility of nitrogen in the aqueous solution lead to unacceptably low ammonia selectivity and productivity in electrochemical nitrogen fixation. , To overcome the intrinsic barrier of the direct electrolysis of N 2 , we recently proposed a “plasma-electrocatalysis” strategy by mimicking one of the natural nitrogen cycles, in which the nitrogen is first oxidized by non-thermal plasma to reactive nitrogen species (RNS) which is usually presented as water-soluble nitrate/nitrite species in aqueous electrolytes, and then, the produced RNS is converted into ammonia with a high selectivity and efficiency via electrochemical reduction. Therefore, it is keenly desired to develop highly selective and durable electrocatalysts for RNS reduction to ammonia.…”

Section: Introductionmentioning

confidence: 99%

Potential-Driven Restructuring of Cu Single Atoms to Nanoparticles for Boosting the Electrochemical Reduction of Nitrate to Ammonia

et al. 2022

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Restructuring is ubiquitous in thermocatalysis and of pivotal importance to identify the real active site, yet it is less explored in electrocatalysis. Herein, by using operando X-ray absorption spectroscopy in conjunction with advanced electron microscopy, we reveal the restructuring of the as-synthesized Cu− N 4 single-atom site to the nanoparticles of ∼5 nm during the electrochemical reduction of nitrate to ammonia, a green ammonia production route upon combined with the plasma-assisted oxidation of nitrogen. The reduction of Cu 2+ to Cu + and Cu 0 and the subsequent aggregation of Cu 0 single atoms is found to occur concurrently with the enhancement of the NH 3 production rate, both of them are driven by the applied potential switching from 0.00 to −1.00 V versus RHE. The maximum production rate of ammonia reaches 4.5 mg cm −2 h −1 (12.5 mol NH 3 g Cu −1 h −1 ) with a Faradaic efficiency of 84.7% at −1.00 V versus RHE, outperforming most of the other Cu catalysts reported previously. After electrolysis, the aggregated Cu nanoparticles are reversibly disintegrated into single atoms and then restored to the Cu−N 4 structure upon being exposed to an ambient atmosphere, which masks the potential-induced restructuring during the reaction. The synchronous changes of the Cu 0 percentage and the ammonia Faradaic efficiency with the applied potential suggests that the Cu nanoparticles are the genuine active sites for nitrate reduction to ammonia, which is corroborated with both the post-deposited Cu NP catalyst and density functional theory calculations.

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“…In the process of activation of an aqueous solution by low-temperature plasma, hydrogen peroxide and nitrate anion are generated at the plasma-solution interface [ 24 , 25 ]. These compounds have significant biological activity, impart antiseptic, and disinfecting properties to an aqueous solution [ 26 ], which is shown in the manuscript ( Table 1 ).…”

Section: Discussionmentioning

confidence: 99%

Increase of Productivity and Neutralization of Pathological Processes in Plants of Grain and Fruit Crops with the Help of Aqueous Solutions Activated by Plasma of High-Frequency Glow Discharge

Danilejko

Белов

Egorov

et al. 2021

Plants

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In this work, we, for the first time, manufactured a plasma-chemical reactor operating at a frequency of 0.11 MHz. The reactor allows for the activation of large volumes of liquids in a short time. The physicochemical properties of activated liquids (concentration of hydrogen peroxide, nitrate anions, redox potential, electrical conductivity, pH, concentration of dissolved gases) are characterized in detail. Antifungal activity of aqueous solutions activated by a glow discharge has been investigated. It was shown that aqueous solutions activated by a glow discharge significantly reduce the degree of presence of phytopathogens and their effect on the germination of such seeds. Seeds of cereals (sorghum and barley) and fruit (strawberries) crops were studied. The greatest positive effect was found in the treatment of sorghum seeds. Moreover, laboratory tests have shown a significant increase in sorghum drought tolerance. The effectiveness of the use of glow-discharge-activated aqueous solutions was shown during a field experiment, which was set up in the saline semi-desert of the Northern Caspian region. Thus, the technology developed by us makes it possible to carry out the activation of aqueous solutions on an industrial scale. Water activated by a glow discharge exhibits antifungicidal activity and significantly accelerates the development of the grain and fruit crops we studied. In the case of sorghum culture, glow-discharge-activated water significantly increases drought resistance.

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Review of low-temperature plasma nitrogen fixation technology

Cited by 63 publications

References 100 publications

Clinical Observation of Low-Temperature Plasma Knife Tonsil Adenoidectomy for Pediatric Snoring and Analysis of Influencing Factors

Clinical Observation of Low-Temperature Plasma Knife Tonsil Adenoidectomy for Pediatric Snoring and Analysis of Influencing Factors

Potential-Driven Restructuring of Cu Single Atoms to Nanoparticles for Boosting the Electrochemical Reduction of Nitrate to Ammonia

Increase of Productivity and Neutralization of Pathological Processes in Plants of Grain and Fruit Crops with the Help of Aqueous Solutions Activated by Plasma of High-Frequency Glow Discharge

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