Pub Date : 2020-06-02DOI: 10.2174/2405520413666200224113901
Benjamin Raj, Kishor Kumar Sahu, M. Mohapatra, A. K. Padhy
Herein, we have synthesized nitrogen doped zinc oxide (N-ZnO) by using imidazole derivative as an organic precursor. The metal oxide nanoparticles were characterized by scanning electron microscope (SEM), and UV-visible spectroscopic techniques. The surface area and pore size distribution were also measured by the BET surface area analyzer. The enhanced surface area reveals that the synthesized materials have better active sites for the amputation of organic dyes. The photocatalytic degradation of methylene blue was chosen to evaluate the photocatalytic activity of N-ZnO nanoparticles, with results indicating that the material exhibited higher activity towards the degradation of methylene blue.
{"title":"N-doped ZnO: Efficient Photocatalyst for Decomposition of Methylene Blue","authors":"Benjamin Raj, Kishor Kumar Sahu, M. Mohapatra, A. K. Padhy","doi":"10.2174/2405520413666200224113901","DOIUrl":"https://doi.org/10.2174/2405520413666200224113901","url":null,"abstract":"\u0000\u0000Herein, we have synthesized nitrogen doped zinc oxide (N-ZnO) by\u0000using imidazole derivative as an organic precursor.\u0000\u0000\u0000\u0000The metal oxide nanoparticles were characterized by scanning electron microscope\u0000(SEM), and UV-visible spectroscopic techniques. The surface area and pore size distribution\u0000were also measured by the BET surface area analyzer. The enhanced surface area\u0000reveals that the synthesized materials have better active sites for the amputation of organic\u0000dyes.\u0000\u0000\u0000\u0000The photocatalytic degradation of methylene blue was chosen to\u0000evaluate the photocatalytic activity of N-ZnO nanoparticles, with results indicating that the\u0000material exhibited higher activity towards the degradation of methylene blue.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42833692","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}
Pub Date : 2020-06-02DOI: 10.2174/2405520413666200313130911
I. Akbar, Zhou Hongtao
Enhanced Oil Recovery (EOR), is a technique that has been used to recover the remaining oil from the reservoirs after primary and secondary recovery methods. Some reservoirs are very complex and require advanced EOR techniques that containing new materials and additives in order to produce maximum oil in economic and environmentally friendly manners. Because of EOR techniques, in this work previous and current challenges have been discussed, and suggested some future opportunities. This work comprises the key factors, such as; transport of Preformed Particle Gels (PPGs), Surface wettability and conformance control that affect the efficiency of PPGs. The conduits, fractures, fracture-like features and high permeability streaks are the big challenges for EOR, as they may cause early water breakthrough and undesirable water channeling. Hence, the use of PPGs is one of the exclusive commercial gel inventions, which not only increases the oil production but also decreases the water cut during the oil production. Moreover, different studies regarding PPG, surfactants, and Silica nanoparticle applications, such as the effect of salinity, particle size, swelling ratio, gel strength, wettability, and adsorption were also discussed. Future work is required in order to overcome the conformance problems and increase the oil recovery.
{"title":"The Opportunities and Challenges of Preformed Particle Gel in Enhanced Oil Recovery","authors":"I. Akbar, Zhou Hongtao","doi":"10.2174/2405520413666200313130911","DOIUrl":"https://doi.org/10.2174/2405520413666200313130911","url":null,"abstract":"\u0000\u0000Enhanced Oil Recovery (EOR), is a technique that has been used to recover the\u0000remaining oil from the reservoirs after primary and secondary recovery methods. Some reservoirs\u0000are very complex and require advanced EOR techniques that containing new materials\u0000and additives in order to produce maximum oil in economic and environmentally friendly\u0000manners. Because of EOR techniques, in this work previous and current challenges have\u0000been discussed, and suggested some future opportunities. This work comprises the key factors,\u0000such as; transport of Preformed Particle Gels (PPGs), Surface wettability and conformance\u0000control that affect the efficiency of PPGs. The conduits, fractures, fracture-like features\u0000and high permeability streaks are the big challenges for EOR, as they may cause early water\u0000breakthrough and undesirable water channeling. Hence, the use of PPGs is one of the exclusive\u0000commercial gel inventions, which not only increases the oil production but also decreases\u0000the water cut during the oil production. Moreover, different studies regarding PPG, surfactants,\u0000and Silica nanoparticle applications, such as the effect of salinity, particle size, swelling\u0000ratio, gel strength, wettability, and adsorption were also discussed. Future work is required\u0000in order to overcome the conformance problems and increase the oil recovery.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45288629","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}
Pub Date : 2020-06-02DOI: 10.2174/2405520413666200316162139
Zhengnan Sun, Jing Zhang, G. Jing, Yang Liu, Shuo Liu
The crude oils exploited in oilfields are mainly high-wax crude oils. Paraffins precipitate, crystallize, and form a three-dimensional network structure, when the temperature falls below the Wax Appearance Temperature (WAT), which decreases crude oil fluidity. This poses huge challenges to oil exploitation and transportation, as well as cost control. To date, the addition of chemical pour point depressants has been a convenient and economical method to improve low-temperature fluidity in crude oils. This article reviews the types of pour point depressants of crude oil and their performance mechanisms, and introduces the main research methods and progress made in the study of the performance mechanisms of pour point depressants in waxy crude oils. Finally, the development direction of pour point depressants is prospected.
{"title":"Research Progress and Discussion of Waxy Crude Pour Point Depressants: A Mini Review","authors":"Zhengnan Sun, Jing Zhang, G. Jing, Yang Liu, Shuo Liu","doi":"10.2174/2405520413666200316162139","DOIUrl":"https://doi.org/10.2174/2405520413666200316162139","url":null,"abstract":"\u0000\u0000The crude oils exploited in oilfields are mainly high-wax crude oils. Paraffins\u0000precipitate, crystallize, and form a three-dimensional network structure, when the temperature\u0000falls below the Wax Appearance Temperature (WAT), which decreases crude oil fluidity.\u0000This poses huge challenges to oil exploitation and transportation, as well as cost control.\u0000To date, the addition of chemical pour point depressants has been a convenient and economical\u0000method to improve low-temperature fluidity in crude oils. This article reviews the types\u0000of pour point depressants of crude oil and their performance mechanisms, and introduces the\u0000main research methods and progress made in the study of the performance mechanisms of\u0000pour point depressants in waxy crude oils. Finally, the development direction of pour point\u0000depressants is prospected.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45844035","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}
Pub Date : 2020-04-22DOI: 10.2174/2352094910999200407095723
Željka Petrović, Jozefina Katić, A. Šarić, I. Despotović, Nives Matijaković, D. Kralj, M. Leskovac, M. Petković
Nowadays investigations in the field of dental implants engineering are focused on bioactivity and osseointegration properties. In this study, the oxide-covered titanium was functionalized by vitamin D3 molecules via a simple self-assembly method with the aim to design more corrosion-resistant and at the same time more bioactive surface. Surface properties of the D3-coated titanium were examined by scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, and contact angle measurements, while long-term corrosion stability during immersion in an artificial saliva solution was investigated in situ by electrochemical impedance spectroscopy. Results of all techniques confirmed a successful formation of the vitamin D3 layer on the oxide-covered titanium. Besides very good corrosion resistivity (~5 MΩ cm2), the D3-modified titanium surface induced spontaneous formation of biocompatible bone-like calcium phosphates (CaP). Observed in vitro CaP-forming ability as a result of D3-modified titanium/artificial saliva interactions could serve as a promising predictor of in vivo bioactivity of implant materials.
{"title":"Influence of Biocompatible Coating on Titanium Surface Characteristics","authors":"Željka Petrović, Jozefina Katić, A. Šarić, I. Despotović, Nives Matijaković, D. Kralj, M. Leskovac, M. Petković","doi":"10.2174/2352094910999200407095723","DOIUrl":"https://doi.org/10.2174/2352094910999200407095723","url":null,"abstract":"\u0000\u0000 Nowadays investigations in the field of dental implants engineering are focused\u0000on bioactivity and osseointegration properties.\u0000\u0000\u0000\u0000In this study, the oxide-covered titanium was functionalized by vitamin D3 molecules via a\u0000simple self-assembly method with the aim to design more corrosion-resistant and at the same time\u0000more bioactive surface.\u0000\u0000\u0000\u0000Surface properties of the D3-coated titanium were examined by scanning electron microscopy,\u0000attenuated total reflectance Fourier transform infrared spectroscopy, and contact angle measurements,\u0000while long-term corrosion stability during immersion in an artificial saliva solution was\u0000investigated in situ by electrochemical impedance spectroscopy.\u0000\u0000\u0000\u0000Results of all techniques confirmed a successful formation of the vitamin D3 layer on the\u0000oxide-covered titanium. Besides very good corrosion resistivity (~5 MΩ cm2), the D3-modified titanium\u0000surface induced spontaneous formation of biocompatible bone-like calcium phosphates (CaP).\u0000\u0000\u0000\u0000 Observed in vitro CaP-forming ability as a result of D3-modified titanium/artificial saliva\u0000interactions could serve as a promising predictor of in vivo bioactivity of implant materials.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75642654","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}
Pub Date : 2020-03-31DOI: 10.2174/2352094909666191030111523
R. A. Antunes, M. C. L. de Oliveira
Stress Corrosion Cracking (SCC) plays a central role in the development of improved structural nuclear materials. Complex interactions between microstructure, alloy composition, manufacturing and environmental factors make the understanding of this phenomenon difficult. This work aimed at reviewing the scientific literature on the SCC behavior of structural nuclear materials in order to identify the main factors that govern this phenomenon. Additionally, the interaction between these factors and materials selection is discussed in order to provide a comprehensive basis for the successful design of metallic materials with improved resistance to SCC.
{"title":"Stress Corrosion Cracking of Structural Nuclear Materials: Influencing Factors and Materials Selection","authors":"R. A. Antunes, M. C. L. de Oliveira","doi":"10.2174/2352094909666191030111523","DOIUrl":"https://doi.org/10.2174/2352094909666191030111523","url":null,"abstract":"\u0000\u0000Stress Corrosion Cracking (SCC) plays a central role in the development of improved\u0000structural nuclear materials. Complex interactions between microstructure, alloy composition, manufacturing\u0000and environmental factors make the understanding of this phenomenon difficult. This\u0000work aimed at reviewing the scientific literature on the SCC behavior of structural nuclear materials\u0000in order to identify the main factors that govern this phenomenon. Additionally, the interaction between\u0000these factors and materials selection is discussed in order to provide a comprehensive basis\u0000for the successful design of metallic materials with improved resistance to SCC.\u0000","PeriodicalId":38021,"journal":{"name":"Recent Innovations in Chemical Engineering","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82472800","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：