Among typical metamaterials, we focus on the light "function" and chiral "element" in this chiral light metamaterial minireview. The authors are interested in inorganic materials, especially transition metal complexes. Metal complexes are compounds that have been studied for a long time for their optical properties (light absorption) and chirality (chiroptical spectroscopy, structural crystal chemistry, and asymmetric catalytic reactions). However, since the unit is a "molecule", few examples as (optical) metamaterials have been reported to date. Is it possible to add a function as a composite material using one method? No, the functions resulting from the nano pattern are very difficult to retrofit. Is there a way to fuse the rich compounds at the boundary between inorganic and organic with state-of-the-art optical metamaterials?
{"title":"Are Commonplace Chiral Metal Complexes Unsuitable for Metamaterials?","authors":"Sato Yoshiyuki, Nakane Daisuke, Akitsu Takashiro","doi":"10.33805/2641-7383.130","DOIUrl":"https://doi.org/10.33805/2641-7383.130","url":null,"abstract":"Among typical metamaterials, we focus on the light \"function\" and chiral \"element\" in this chiral light metamaterial minireview. The authors are interested in inorganic materials, especially transition metal complexes. Metal complexes are compounds that have been studied for a long time for their optical properties (light absorption) and chirality (chiroptical spectroscopy, structural crystal chemistry, and asymmetric catalytic reactions). However, since the unit is a \"molecule\", few examples as (optical) metamaterials have been reported to date. Is it possible to add a function as a composite material using one method? No, the functions resulting from the nano pattern are very difficult to retrofit. Is there a way to fuse the rich compounds at the boundary between inorganic and organic with state-of-the-art optical metamaterials?","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78396876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We faced an example of re-reporting of the crystal structure, which was studied from another perspective. With the development of data-driven science, the efficiency of all researchers may be improved if the rules of data "reuse", which are different from "novelty", are established. In this context, the crystal structure of a copper(II) complex with 2,6-pyridine dicarboxylic acid, C14H8O8CuN2.H2O (monohydrate), was re-determined by us again. It has a different number of crystalline water molecules in a crystal of the same copper(II) complex previously reported (trihydrate). Interestingly, both crystal structures have been reported again and again by many researchers for a long time. What’s novelty for each report?
{"title":"Re-reporting the Crystal Structure of Copper Complex from Another Point of View","authors":"T. Akitsu, Shintaro Suda, Natsuki Katsuumi","doi":"10.33805/2641-7383.129","DOIUrl":"https://doi.org/10.33805/2641-7383.129","url":null,"abstract":"We faced an example of re-reporting of the crystal structure, which was studied from another perspective. With the development of data-driven science, the efficiency of all researchers may be improved if the rules of data \"reuse\", which are different from \"novelty\", are established. In this context, the crystal structure of a copper(II) complex with 2,6-pyridine dicarboxylic acid, C14H8O8CuN2.H2O (monohydrate), was re-determined by us again. It has a different number of crystalline water molecules in a crystal of the same copper(II) complex previously reported (trihydrate). Interestingly, both crystal structures have been reported again and again by many researchers for a long time. What’s novelty for each report?","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77647314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Due to recent advances in computational chemistry, not only computers and analysis programs in crystal structure analysis, but also TD-DFT calculations related to intramolecular electronic states and energies have been easily performed, and detailed discussions have become possible. On the other hand, how to discuss information such as intermolecular interactions, molecular assembly states, and packing, which is beyond the scope of application of each computational chemistry program and theory, is still a subject of research. Here, authors would like to consider what is possible and difficult using a program, for example, Hirshfeld surface analysis.
{"title":"Beyond the Scope of Each Computational Chemistry","authors":"T. Akitsu, Shintaro Suda, Natsuki Katsuumi","doi":"10.33805/2641-7383.128","DOIUrl":"https://doi.org/10.33805/2641-7383.128","url":null,"abstract":"Due to recent advances in computational chemistry, not only computers and analysis programs in crystal structure analysis, but also TD-DFT calculations related to intramolecular electronic states and energies have been easily performed, and detailed discussions have become possible. On the other hand, how to discuss information such as intermolecular interactions, molecular assembly states, and packing, which is beyond the scope of application of each computational chemistry program and theory, is still a subject of research. Here, authors would like to consider what is possible and difficult using a program, for example, Hirshfeld surface analysis.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85847311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbes generally attach to surfaces and produce an Extracellular Polymeric Substance (EPS) matrix. The exopolysaccharide production plays a role in biofilm protection against environmental stress factors. Biofilm-forming bacteria exhibit different physiological properties in their response to environmental influences compared with their planktonic counterparts. This study aimed to investigate the impact of changing the concentrations of glucose, peptone, and yeast extract and environmental parameters, such as temperature, pH, anaerobic conditions, osmotic stresses, and growth media on biofilm formation by K. pneumonia MBB9 recovered from river-stones collected from the Porter Brook, Sheffield using crystal violet and resazurin assays in microtiter plates. The different concentrations of glucose (0.25, 0.5 and 1 g L-1), peptone (0.25, 0.5 and 1 g L-1) and yeast extract (0.25, 0.5 and 1 g L-1) as carbon and nitrogen sources found to have an impact on biofilm formation by K. pneumonia MBB9. The greatest biomass level being at 0.25 g L-1 for glucose whereas the density of biofilm increased significantly with increasing the concentration of peptone and yeast extract until 1 g L-1 of peptone and yeast extract, suggesting that higher levels of peptone and yeast extract can be beneficial for biofilm formation by K. pneumonia MBB9 in microtiter plates. The amount of biofilm was high at pH 4.5 and 0.6% NaCl; however, the significant reduction at pH 10.5 and 10.6% NaCl could be as a result of the slow growth under higher NaCl concentrations and highly alkaline condition. High-density biofilm produced at 40 °C; however, a temperature of 50 °C reduced the amount of biofilm by K. pneumonia MBB9, suggesting that more extreme temperatures might affect the formation of biofilm by inhibiting growth. Besides, biofilm production under anaerobic conditions was significantly lower (83% less) than under aerobic environments. Klebsiella pneumonia MBB9 possessed a high capacity to form biofilms on the surface of glass slide coupons.
微生物通常附着在表面并产生细胞外聚合物质(EPS)基质。胞外多糖的产生对生物膜抵御环境胁迫具有一定的保护作用。与浮游生物相比，生物膜形成细菌在对环境影响的反应中表现出不同的生理特性。本研究旨在研究改变葡萄糖、蛋白胨和酵母提取物的浓度以及环境参数(如温度、pH、厌氧条件、渗透应力和生长介质)对从谢菲尔德波特布鲁克(Porter Brook)收集的河石中回收的肺炎K.肺炎MBB9生物膜形成的影响，使用结晶紫和瑞祖林在微滴板上进行测定。不同浓度的葡萄糖(0.25、0.5和1g L-1)、蛋白胨(0.25、0.5和1g L-1)和酵母提取物(0.25、0.5和1g L-1)作为碳源和氮源，对肺炎克氏杆菌MBB9的生物膜形成有影响。葡萄糖在0.25 g L-1时生物量最高，而随着蛋白胨和酵母提取物浓度的增加，生物膜密度显著增加，直到1 g L-1的蛋白胨和酵母提取物，这表明在微滴板上，较高水平的蛋白胨和酵母提取物有利于肺炎克伯菌MBB9生物膜的形成。pH为4.5、NaCl为0.6%时，生物膜的数量较高;然而，在pH 10.5和10.6% NaCl条件下，由于高NaCl浓度和高碱性条件下生长缓慢，导致了显著的还原。在40℃下生产高密度生物膜;然而，50°C的温度降低了肺炎克雷伯菌MBB9的生物膜数量，这表明更极端的温度可能通过抑制生长来影响生物膜的形成。此外，厌氧条件下的生物膜产量显著低于好氧环境(少83%)。肺炎克雷伯菌MBB9具有较高的在玻片片表面形成生物膜的能力。
{"title":"Characterization and Evaluation of Biofilm Formation by Klebsiella pneumonia MBB9 Isolated from Epilithic Biofilms of the Porter Brook River, Sheffield","authors":"Alotaibi Ghazay, B. Mamdouh","doi":"10.33805/2690-2613.120","DOIUrl":"https://doi.org/10.33805/2690-2613.120","url":null,"abstract":"Microbes generally attach to surfaces and produce an Extracellular Polymeric Substance (EPS) matrix. The exopolysaccharide production plays a role in biofilm protection against environmental stress factors. Biofilm-forming bacteria exhibit different physiological properties in their response to environmental influences compared with their planktonic counterparts. This study aimed to investigate the impact of changing the concentrations of glucose, peptone, and yeast extract and environmental parameters, such as temperature, pH, anaerobic conditions, osmotic stresses, and growth media on biofilm formation by K. pneumonia MBB9 recovered from river-stones collected from the Porter Brook, Sheffield using crystal violet and resazurin assays in microtiter plates. The different concentrations of glucose (0.25, 0.5 and 1 g L-1), peptone (0.25, 0.5 and 1 g L-1) and yeast extract (0.25, 0.5 and 1 g L-1) as carbon and nitrogen sources found to have an impact on biofilm formation by K. pneumonia MBB9. The greatest biomass level being at 0.25 g L-1 for glucose whereas the density of biofilm increased significantly with increasing the concentration of peptone and yeast extract until 1 g L-1 of peptone and yeast extract, suggesting that higher levels of peptone and yeast extract can be beneficial for biofilm formation by K. pneumonia MBB9 in microtiter plates. The amount of biofilm was high at pH 4.5 and 0.6% NaCl; however, the significant reduction at pH 10.5 and 10.6% NaCl could be as a result of the slow growth under higher NaCl concentrations and highly alkaline condition. High-density biofilm produced at 40 °C; however, a temperature of 50 °C reduced the amount of biofilm by K. pneumonia MBB9, suggesting that more extreme temperatures might affect the formation of biofilm by inhibiting growth. Besides, biofilm production under anaerobic conditions was significantly lower (83% less) than under aerobic environments. Klebsiella pneumonia MBB9 possessed a high capacity to form biofilms on the surface of glass slide coupons.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79685818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A fire sometimes ignited an organic solvent in a chemical laboratory. A mechanochemical synthesis may be a good way to reduce the amount of organic solvents or without organic solvents compared to conventional synthesis in solutions. The solvent affected the product, namely solvent methanol acted as a ligand, although the quality of the data of X-ray crystallography is usually difficult to report in a strict research article in the case of our Azo-Schiff base metal complexes. Thus substitution of synthesis methods associated with potentially dangerous organic solvents may be possible depending on the application or purpose.
{"title":"Attempt to Reduce Potentially Flammable Organic Solvents in Chemical Synthesis","authors":"T. Akitsu, Yuika Onami, Tetsundo Furuya","doi":"10.33805/2641-7383.126","DOIUrl":"https://doi.org/10.33805/2641-7383.126","url":null,"abstract":"A fire sometimes ignited an organic solvent in a chemical laboratory. A mechanochemical synthesis may be a good way to reduce the amount of organic solvents or without organic solvents compared to conventional synthesis in solutions. The solvent affected the product, namely solvent methanol acted as a ligand, although the quality of the data of X-ray crystallography is usually difficult to report in a strict research article in the case of our Azo-Schiff base metal complexes. Thus substitution of synthesis methods associated with potentially dangerous organic solvents may be possible depending on the application or purpose.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74481641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alejandro Moure Abelenda, K. Semple, A. Lag-Brotons, B. Herbert, G. Aggidis, F. Aiouache
The present study combined two nutrient management strategies to improve the marketability of a waste-derived fertilizer: (a) isolation of ammoniacal nitrogen and (b) preparation of a bulk soil amendment. The wood fly ash with low content of pollutants was added to an agrowaste anaerobic digestate as alkaline stabilizer, which promoted the volatilization of ammonia and adsorption processes, and as nutrient supplement. The 39.71 ± 1.44 g blend was incubated for 60 hours at 20°C and 100 rpm in a closed chamber (250-mL Schott Duran® bottle) with a 5.21 ± 0.10 mL sulfuric acid trap of 10 different concentrations (0.11, 0.21, 0.32, 0.43, 0.54, 0.64, 0.75, 0.86, 0.96, and 1.07 mol/L). For analytical purposes, the sulfuric acid, water-soluble, and water-insoluble fractions of the blend were isolated after the incubation. The 1.07 mol/L sulfuric acid solution contained 23.69 ± 5.72 % more of ammonical nitrogen than the 0.11 mol/L solutions. However, in all cases the amount of nitrogen in the H2SO4 compartment was lower than the one in the water-soluble and water-insoluble fractions. Only the 15.52 ± 2.13 % of the nitrogen accounted after the incubation was found in the H2SO4 trap. The bottleneck of the NH3 stripping process was the rate of mass transfer at the interface between the blended fertilizer and the headspace of the closed chamber. The organic phosphorus was more susceptible to be adsorbed during the alkaline treatment with non-intrusive acidification than the nitrogen and carbon. Activation of the ash as adsorbent before mixing with the digestate should improve the properties of the blend as slow release fertilizer, since more nutrients would end in the water-insoluble fraction.
本研究结合了两种养分管理策略，以提高废物来源肥料的适销性:(a)分离氨态氮和(b)制备散装土壤改良剂。将污染物含量较低的木粉煤灰作为碱性稳定剂添加到农业废弃物厌氧消化池中，促进氨的挥发和吸附过程，并作为营养补充。将39.71±1.44 g混合物在封闭腔(250 mL Schott Duran®瓶)中，在20°C和100 rpm下，与5.21±0.10 mL 10种不同浓度(0.11,0.21,0.32,0.43,0.54,0.64,0.75,0.86,0.96和1.07 mol/L)的硫酸阱中孵育60小时。为了便于分析，在孵育后分离出混合物的硫酸、水溶性和不水溶性部分。1.07 mol/L硫酸溶液比0.11 mol/L硫酸溶液含氨态氮多23.69±5.72%。然而，在所有情况下，H2SO4室中的氮含量都低于水溶性和不水溶性馏分中的氮含量。在H2SO4陷阱中，孵育后的氮仅占15.52±2.13%。NH3汽提过程的瓶颈是混合肥与密闭腔顶空界面处的传质速率。在非侵入式酸化碱性处理中，有机磷比氮和碳更容易被吸附。在与消化液混合之前，将灰分作为吸附剂活化，可以改善混合料作为缓释肥料的性能，因为更多的营养物质会以不溶于水的部分结束。
{"title":"Alkaline Wood Ash, Turbulence, and Traps with Excess of Sulfuric Acid Do Not Strip Completely the Ammonia off an Agro-waste Digestate","authors":"Alejandro Moure Abelenda, K. Semple, A. Lag-Brotons, B. Herbert, G. Aggidis, F. Aiouache","doi":"10.33805/2641-7383.127","DOIUrl":"https://doi.org/10.33805/2641-7383.127","url":null,"abstract":"The present study combined two nutrient management strategies to improve the marketability of a waste-derived fertilizer: (a) isolation of ammoniacal nitrogen and (b) preparation of a bulk soil amendment. The wood fly ash with low content of pollutants was added to an agrowaste anaerobic digestate as alkaline stabilizer, which promoted the volatilization of ammonia and adsorption processes, and as nutrient supplement. The 39.71 ± 1.44 g blend was incubated for 60 hours at 20°C and 100 rpm in a closed chamber (250-mL Schott Duran® bottle) with a 5.21 ± 0.10 mL sulfuric acid trap of 10 different concentrations (0.11, 0.21, 0.32, 0.43, 0.54, 0.64, 0.75, 0.86, 0.96, and 1.07 mol/L). For analytical purposes, the sulfuric acid, water-soluble, and water-insoluble fractions of the blend were isolated after the incubation. The 1.07 mol/L sulfuric acid solution contained 23.69 ± 5.72 % more of ammonical nitrogen than the 0.11 mol/L solutions. However, in all cases the amount of nitrogen in the H2SO4 compartment was lower than the one in the water-soluble and water-insoluble fractions. Only the 15.52 ± 2.13 % of the nitrogen accounted after the incubation was found in the H2SO4 trap. The bottleneck of the NH3 stripping process was the rate of mass transfer at the interface between the blended fertilizer and the headspace of the closed chamber. The organic phosphorus was more susceptible to be adsorbed during the alkaline treatment with non-intrusive acidification than the nitrogen and carbon. Activation of the ash as adsorbent before mixing with the digestate should improve the properties of the blend as slow release fertilizer, since more nutrients would end in the water-insoluble fraction.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78548304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new di-block acrylate copolymer with a Copper-Phthalocyanine (CuPc) core has been synthesized via a multi-step reaction scheme involving the atom-transfer radical polymerization. This material displayed amphiphilic character and consists of a CuPc core with eight copolymer arms. This new amphiphilic material and related intermediates have been characterized by UV-Vis, FT-IR, 1H-NMR and elemental analysis. A preliminary study involving self-assembly properties of this material by optical, atomic force and scanning electron microscopies is presented.
{"title":"Synthesis, Characterization and Self-Assembly Properties of a New Copper-Phthalocyanine Core Acrylate Block Copolymer","authors":"R. Saha, B. Mandal","doi":"10.33805/2641-7383.120","DOIUrl":"https://doi.org/10.33805/2641-7383.120","url":null,"abstract":"A new di-block acrylate copolymer with a Copper-Phthalocyanine (CuPc) core has been synthesized via a multi-step reaction scheme involving the atom-transfer radical polymerization. This material displayed amphiphilic character and consists of a CuPc core with eight copolymer arms. This new amphiphilic material and related intermediates have been characterized by UV-Vis, FT-IR, 1H-NMR and elemental analysis. A preliminary study involving self-assembly properties of this material by optical, atomic force and scanning electron microscopies is presented.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85382111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
“Realization of society 5.0 in fire and disaster prevention activities” is one of intensive goals of Japanese government developing fire technology [1]. Improvement of new equipment and materials for disaster response utilizing AI and ICT should be developed according to social requirements. Efforts to predict earthquake, pour, flood, etc. through AI analysis of data collected from past disasters must continue. In parallel with such elaboration of disaster prediction, it is necessary to proceed with preparations for prompt and accurate provision of disaster information during emergency situations and support for rebuilding lives post disaster.
{"title":"Experience, Data-Driven and Artificial Intelligence in Social (Fire) and Chemical Technology","authors":"T. Akitsu, Yuika Onami","doi":"10.33805/2641-7383.114","DOIUrl":"https://doi.org/10.33805/2641-7383.114","url":null,"abstract":"“Realization of society 5.0 in fire and disaster prevention activities” is one of intensive goals of Japanese government developing fire technology [1]. Improvement of new equipment and materials for disaster response utilizing AI and ICT should be developed according to social requirements. Efforts to predict earthquake, pour, flood, etc. through AI analysis of data collected from past disasters must continue. In parallel with such elaboration of disaster prediction, it is necessary to proceed with preparations for prompt and accurate provision of disaster information during emergency situations and support for rebuilding lives post disaster.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88723903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Here we show that petroleum can be formed efficiently at normal temperatures and pressures from carbon dioxide and activated water. The CO2 nano-bubble containing water was treated with photocatalyst in the presence of oxygen under UV irradiation. The activated water was mixed vigorously with kerosene or light oil to form an emulsion. The emulsion gradually separated into a two-phase solution. After phase separation, the volume of kerosene or light oil, depending on which oil was utilized, increased by 5 to 10%. Likewise tetradecane was used, and original tetradecane may be used as a template for the synthesis of new tetradecane. When commercial light oil was treated in the same way, most organic and inorganic impurities were removed from the oil and very clean light oil was obtained. We named it as dream light oil. The dream light oil meets strict Japanese Industrial Standards (JIS).
{"title":"Chemical Synthesis of Fuel Hydrocarbon from CO2 and Activated Water, and Purification of Commercial Light Oil for Dream Oil","authors":"T. Imanaka, T. Takemoto","doi":"10.33805/2641-7383.111","DOIUrl":"https://doi.org/10.33805/2641-7383.111","url":null,"abstract":"Here we show that petroleum can be formed efficiently at normal temperatures and pressures from carbon dioxide and activated water. The CO2 nano-bubble containing water was treated with photocatalyst in the presence of oxygen under UV irradiation. The activated water was mixed vigorously with kerosene or light oil to form an emulsion. The emulsion gradually separated into a two-phase solution. After phase separation, the volume of kerosene or light oil, depending on which oil was utilized, increased by 5 to 10%. Likewise tetradecane was used, and original tetradecane may be used as a template for the synthesis of new tetradecane. When commercial light oil was treated in the same way, most organic and inorganic impurities were removed from the oil and very clean light oil was obtained. We named it as dream light oil. The dream light oil meets strict Japanese Industrial Standards (JIS).","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90394478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. A. Atty, M. I. Walash, S. Toubar, Maha M AbouEl-Alamin, Maha A Elabd, N. N. Salama
A novel simple and selective electrochemical procedure is utilized for the determination of Dinoprostone (DIN) in drug substance and pharmaceutical preparation with good recovery and without interference with other excipient. Herein, the electrochemical sensing platform based upon preparing gold nanoparticle sensor on silica modified carbon paste electrode. The surface morphology of the modified electrode was characterized by scanning electron microscope. Different experimental conditions, including electrode composition, effect of pH and scan rate were estimated carefully by cyclic voltammetry to obtain the highest electrochemical response. By using square wave voltammetry a good linear response was obtained in the range of, 2 x 10-5-4 x10-4 mol L-1, and 2 x 10-7-1.6 x 10-4 mol L-1, with low detection limit of 5 x 10-6 mol L-1, and 4.9 x 10-8 mol L-1 by CPE and GNP/SMCPE respectively. The obtained results are in good agreement with those obtained by official method. No electrochemical method was reported before for determination of DIN. The developed method was simple, rapid, economic and challenging to green analytical chemistry.
{"title":"Spot on Gold Nanoparticles/Silica Modified Electrode for Rapid Sensitive Determination of Dinoprostone","authors":"S. A. Atty, M. I. Walash, S. Toubar, Maha M AbouEl-Alamin, Maha A Elabd, N. N. Salama","doi":"10.33805/2641-7383.110","DOIUrl":"https://doi.org/10.33805/2641-7383.110","url":null,"abstract":"A novel simple and selective electrochemical procedure is utilized for the determination of Dinoprostone (DIN) in drug substance and pharmaceutical preparation with good recovery and without interference with other excipient. Herein, the electrochemical sensing platform based upon preparing gold nanoparticle sensor on silica modified carbon paste electrode. The surface morphology of the modified electrode was characterized by scanning electron microscope. Different experimental conditions, including electrode composition, effect of pH and scan rate were estimated carefully by cyclic voltammetry to obtain the highest electrochemical response. By using square wave voltammetry a good linear response was obtained in the range of, 2 x 10-5-4 x10-4 mol L-1, and 2 x 10-7-1.6 x 10-4 mol L-1, with low detection limit of 5 x 10-6 mol L-1, and 4.9 x 10-8 mol L-1 by CPE and GNP/SMCPE respectively. The obtained results are in good agreement with those obtained by official method. No electrochemical method was reported before for determination of DIN. The developed method was simple, rapid, economic and challenging to green analytical chemistry.","PeriodicalId":11477,"journal":{"name":"Edelweiss Chemical Science Journal","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85720977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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