Pub Date : 2016-02-19DOI: 10.1080/22243682.2016.1151375
M. Kadari, M. Kaid, Mouffok Ben Ali, D. Villemin
ABSTRACTIn this work, the adsorption of basic fuchsine largely used in industries was studied by Zn/Al-HDL intercalated with diamino-dodecylphosphonic acid (DDPA). The physicochemical characteristics of Zn/Al-DDPA were evaluated by Brunauer–Emmett–Teller method, Fourier transform infrared spectroscopy, X-ray diffraction, and the elementary analysis to determine the rate of grafting. The effect of concentration of fuchsine, reaction times, ionic strength effect and the effect of the temperature were studied. The thermodynamic and kinetic studies were carried out and the results confirmed that all adsorption processes were spontaneous and thermodynamically favorable and that the adsorbent is reusable after three steps of desorption. The best uptake in this study was 90%.
{"title":"The intercalation of Zn/Al-HDL by the diamino-dodecylphosphonic acid: synthesis and properties of adsorption of basic fuchsine","authors":"M. Kadari, M. Kaid, Mouffok Ben Ali, D. Villemin","doi":"10.1080/22243682.2016.1151375","DOIUrl":"https://doi.org/10.1080/22243682.2016.1151375","url":null,"abstract":"ABSTRACTIn this work, the adsorption of basic fuchsine largely used in industries was studied by Zn/Al-HDL intercalated with diamino-dodecylphosphonic acid (DDPA). The physicochemical characteristics of Zn/Al-DDPA were evaluated by Brunauer–Emmett–Teller method, Fourier transform infrared spectroscopy, X-ray diffraction, and the elementary analysis to determine the rate of grafting. The effect of concentration of fuchsine, reaction times, ionic strength effect and the effect of the temperature were studied. The thermodynamic and kinetic studies were carried out and the results confirmed that all adsorption processes were spontaneous and thermodynamically favorable and that the adsorbent is reusable after three steps of desorption. The best uptake in this study was 90%.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"22 1","pages":"148-157"},"PeriodicalIF":0.0,"publicationDate":"2016-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86215097","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 : 2016-01-19DOI: 10.1080/22243682.2015.1124736
F. Asuke, V. Aigbodion
The tribological behavior of epoxy polymer composites reinforced with periwinkle shell particles was studied using a pin-on-disc wear rig under dry sliding conditions. Uncarbonized (UPSp) and carbonized (CPSp) periwinkle shell particle was used in the production of the composites at 0, 10, 20, 30 and 40wt%. The influences of wear parameters like applied load, sliding speed and percentage of periwinkle shell particles addition on the wear rate were investigated. A plan of experiments was performed to acquire data in a controlled way. Scanning electron microscope was used to analyze the worn surface of the samples. Linear regression equation and analysis of variance (ANOVA) were employed to investigate the influence of process parameters on the wear rate of the samples. The carbonized (CPSp) composites have a higher wear resistance than the uncarbonized (UPSp) composites. The predicted wear rate of the epoxy and it composites were found to lie close to that experimentally observed ones. The confirmation of the experiments conduct using ANOVA to verify the optimal testing parameters shows that periwinkle shell particles, sliding speed and applied load had a significant effect on the wear rate. The results show that the addition of periwinkle shell particles as reinforcing materials in epoxy composites increases the wear resistance of the composite greatly.
{"title":"Experiment numerical study of dry sliding wear behavior of epoxy/periwinkles shell particulate composites","authors":"F. Asuke, V. Aigbodion","doi":"10.1080/22243682.2015.1124736","DOIUrl":"https://doi.org/10.1080/22243682.2015.1124736","url":null,"abstract":"The tribological behavior of epoxy polymer composites reinforced with periwinkle shell particles was studied using a pin-on-disc wear rig under dry sliding conditions. Uncarbonized (UPSp) and carbonized (CPSp) periwinkle shell particle was used in the production of the composites at 0, 10, 20, 30 and 40wt%. The influences of wear parameters like applied load, sliding speed and percentage of periwinkle shell particles addition on the wear rate were investigated. A plan of experiments was performed to acquire data in a controlled way. Scanning electron microscope was used to analyze the worn surface of the samples. Linear regression equation and analysis of variance (ANOVA) were employed to investigate the influence of process parameters on the wear rate of the samples. The carbonized (CPSp) composites have a higher wear resistance than the uncarbonized (UPSp) composites. The predicted wear rate of the epoxy and it composites were found to lie close to that experimentally observed ones. The confirmation of the experiments conduct using ANOVA to verify the optimal testing parameters shows that periwinkle shell particles, sliding speed and applied load had a significant effect on the wear rate. The results show that the addition of periwinkle shell particles as reinforcing materials in epoxy composites increases the wear resistance of the composite greatly.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"1 1","pages":"123-139"},"PeriodicalIF":0.0,"publicationDate":"2016-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80517591","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 : 2016-01-02DOI: 10.1080/22243682.2015.1114902
R. Brunner, E. Pinčík, M. Kučera, M. Mikula
We demonstrate the modification of photoluminescence (PL) spectra of Si-based thin film structures caused by the passivation process. The investigated samples consist of thin a-Si:H/ SiC:H layers deposited on clean crystalline Si(100) substrate. The structures were passivated by means of three types of chemical procedures based on aqueous and/or methanol solution of KCN. PL signals consist of a few partially overlapped Gaussian peaks. The shape of the PL spectrum is modified depending on the applied passivation method. This can be interpreted as a result of the diverse influence of the passivation on individual energy peaks. In our opinion, this confirms the assumption that the excited states that are contributing to the intensity of these peaks are localized in different zones of the sample, namely at different depths. We demonstrate the effect of substrate on the layers' structural parameters. Surface roughness was determined using the atomic force microscopy (AFM) method. X-ray diffraction at grazing incidence (XRDG) measurements confirm the non-homogeneity of deposited films that result in zones. The process of passivation modifies the densities of states that generate PL peaks differently in accordance with their localization. The diffusion of cyanide anions CN− in the amorphous matrix of the a-Si:H layer is the mechanism that controls this effect.
{"title":"Photoluminescence investigation of thin film a-Si:H-based structures passivated in cyanide solution","authors":"R. Brunner, E. Pinčík, M. Kučera, M. Mikula","doi":"10.1080/22243682.2015.1114902","DOIUrl":"https://doi.org/10.1080/22243682.2015.1114902","url":null,"abstract":"We demonstrate the modification of photoluminescence (PL) spectra of Si-based thin film structures caused by the passivation process. The investigated samples consist of thin a-Si:H/ SiC:H layers deposited on clean crystalline Si(100) substrate. The structures were passivated by means of three types of chemical procedures based on aqueous and/or methanol solution of KCN. \u0000 \u0000PL signals consist of a few partially overlapped Gaussian peaks. The shape of the PL spectrum is modified depending on the applied passivation method. This can be interpreted as a result of the diverse influence of the passivation on individual energy peaks. In our opinion, this confirms the assumption that the excited states that are contributing to the intensity of these peaks are localized in different zones of the sample, namely at different depths. We demonstrate the effect of substrate on the layers' structural parameters. Surface roughness was determined using the atomic force microscopy (AFM) method. X-ray diffraction at grazing incidence (XRDG) measurements confirm the non-homogeneity of deposited films that result in zones. The process of passivation modifies the densities of states that generate PL peaks differently in accordance with their localization. The diffusion of cyanide anions CN− in the amorphous matrix of the a-Si:H layer is the mechanism that controls this effect.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"64 1","pages":"62-69"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91148856","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 : 2016-01-02DOI: 10.1080/22243682.2015.1114904
P. M. Kharade, S. G. Chavan, S. S. Mane, P. Joshi, D. J. Salunkhe
This paper reports the synthesis and characterization of Cr2O3, Mn3O4 and Cr2O3/Mn3O4 layered composite thin films by using simple and inexpensive electrodeposition method. These thin films are cha...
{"title":"Synthesis and characterization of galvanostatically deposited Cr2O3, Mn3O4, Cr2O3/Mn3O4 layered composite thin film for supercapacitor application","authors":"P. M. Kharade, S. G. Chavan, S. S. Mane, P. Joshi, D. J. Salunkhe","doi":"10.1080/22243682.2015.1114904","DOIUrl":"https://doi.org/10.1080/22243682.2015.1114904","url":null,"abstract":"This paper reports the synthesis and characterization of Cr2O3, Mn3O4 and Cr2O3/Mn3O4 layered composite thin films by using simple and inexpensive electrodeposition method. These thin films are cha...","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"40 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80070622","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 : 2016-01-02DOI: 10.1080/22243682.2015.1072733
R. S. Odera, O. Onukwuli, J. Nwabanne
Vegetable fibres/particles have low durability in cementitious matrix. The alkaline media in cement weaken most natural fibres. In order to overcome this limitation and produce a durable and safe c...
{"title":"Experimental evaluation of Raffia palm fibre ash particles modified polyester cement mortar composites","authors":"R. S. Odera, O. Onukwuli, J. Nwabanne","doi":"10.1080/22243682.2015.1072733","DOIUrl":"https://doi.org/10.1080/22243682.2015.1072733","url":null,"abstract":"Vegetable fibres/particles have low durability in cementitious matrix. The alkaline media in cement weaken most natural fibres. In order to overcome this limitation and produce a durable and safe c...","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"2 1","pages":"70-81"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89927976","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 : 2016-01-02DOI: 10.1080/22243682.2015.1114903
P. Padwal, S. Kadam, S. Mane, S. B. Kulkarni
Polyaniline (PANI), cobalt oxide (Co3O4) and PANI/Co3O4 layered thin films are successfully synthesized on stainless steel substrate using electrodeposition technique. The electrochemical oxidation (anodic) method is employed for oxidation of layered composite. The structural and morphological studies of these films are investigated using X-ray diffraction and scanning electron microscope. The electrochemical supercapacitive behavior of the films is studied using cyclic voltammetry and galvanostatic charge–discharge measurements in 0.5M Na2SO4 electrolyte bath. The layered composite PANI/Co3O4 electrode shows almost 50% increase in specific capacitance and remarkable enhancement in specific energy and specific power in comparison with the parent Co3O4 electrode. For layered composite electrode after 500 cycles of charge–discharge, it is observed that specific capacitance retains ∼ 100% compared to the first cycle. The electrochemical impedance spectroscopy is also studied. The simulated values of resistance and capacitance are calculated along with equivalent circuit. Hence, the layered composite PANI/Co3O4 electrode may have great potential application for electrochemical supercapacitors.
{"title":"Synthesis and characterization of supercapacitive behavior of electrodeposited PANI/Co3O4 layered composite electrode","authors":"P. Padwal, S. Kadam, S. Mane, S. B. Kulkarni","doi":"10.1080/22243682.2015.1114903","DOIUrl":"https://doi.org/10.1080/22243682.2015.1114903","url":null,"abstract":"Polyaniline (PANI), cobalt oxide (Co3O4) and PANI/Co3O4 layered thin films are successfully synthesized on stainless steel substrate using electrodeposition technique. The electrochemical oxidation (anodic) method is employed for oxidation of layered composite. The structural and morphological studies of these films are investigated using X-ray diffraction and scanning electron microscope. The electrochemical supercapacitive behavior of the films is studied using cyclic voltammetry and galvanostatic charge–discharge measurements in 0.5M Na2SO4 electrolyte bath. The layered composite PANI/Co3O4 electrode shows almost 50% increase in specific capacitance and remarkable enhancement in specific energy and specific power in comparison with the parent Co3O4 electrode. For layered composite electrode after 500 cycles of charge–discharge, it is observed that specific capacitance retains ∼ 100% compared to the first cycle. The electrochemical impedance spectroscopy is also studied. The simulated values of resistance and capacitance are calculated along with equivalent circuit. Hence, the layered composite PANI/Co3O4 electrode may have great potential application for electrochemical supercapacitors.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"367 1","pages":"13-23"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76428302","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 : 2016-01-02DOI: 10.1080/22243682.2015.1103664
K. Мuzyka, S. Piletsky, O. Zhikol, S. Shishkina
The need for materials with pre-determined ligand-selectivity in sensing and separation technologies has driven the science of molecularly imprinted polymers (MIPs). MIPs are considered as alternat...
{"title":"Theoretical quantum mechanical based studies of melamine – monomers interaction in pre-polymerisation phase","authors":"K. Мuzyka, S. Piletsky, O. Zhikol, S. Shishkina","doi":"10.1080/22243682.2015.1103664","DOIUrl":"https://doi.org/10.1080/22243682.2015.1103664","url":null,"abstract":"The need for materials with pre-determined ligand-selectivity in sensing and separation technologies has driven the science of molecularly imprinted polymers (MIPs). MIPs are considered as alternat...","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"88 1","pages":"24-35"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89902127","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 : 2016-01-02DOI: 10.1080/22243682.2015.1048287
M. Menkiti, Ganesan Sekeran, V. Ugonabo, N. Menkiti, O. Onukwuli
Optimization and kinetics of brewery effluent coagulation–flocculation by chitin derived coagulant (CDC) were investigated. Removal of suspended and dissolved particles (SDP) from the effluent was ...
{"title":"Factorial optimization and kinetic studies of coagulation–flocculation of brewery effluent by crab shell coagulant","authors":"M. Menkiti, Ganesan Sekeran, V. Ugonabo, N. Menkiti, O. Onukwuli","doi":"10.1080/22243682.2015.1048287","DOIUrl":"https://doi.org/10.1080/22243682.2015.1048287","url":null,"abstract":"Optimization and kinetics of brewery effluent coagulation–flocculation by chitin derived coagulant (CDC) were investigated. Removal of suspended and dissolved particles (SDP) from the effluent was ...","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"11 1","pages":"36-61"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82280994","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 : 2016-01-02DOI: 10.1080/22243682.2015.1089417
Ziqin Zheng, Zhenguo Wang, Wei-jiu Huang
The micro-scale abrasive wear behavior of TiZrNbTa (TZNT) alloy in Hank’s solution and distilled water was studied using the TE66 machine. The effect of load and sliding distance was considered. The results of experiments show that the wear volume of the TZNT alloy is increased with increasing distance because of the greater damage, but the wear volume is not present the same regularity as the increase of load due to the effect of several factors. Only three-body abrasive wear is present at the lower load, while the mixed wear mechanism includes three-body and two-body abrasive wears at the higher load. Through observation, the wear appears under the same sliding distance at various simulated body fluids. The wear appearance is related to the wear mechanism. For wastage map, under the conditions of this paper, the majority of the area is medium wastage, the rest is low wastage, and there is no high wastage. The wastage map is related to the wear volume of the alloy under different conditions.
{"title":"Influence of load and sliding distance on the micro-scale abrasive wear behavior of TZNT alloy","authors":"Ziqin Zheng, Zhenguo Wang, Wei-jiu Huang","doi":"10.1080/22243682.2015.1089417","DOIUrl":"https://doi.org/10.1080/22243682.2015.1089417","url":null,"abstract":"The micro-scale abrasive wear behavior of TiZrNbTa (TZNT) alloy in Hank’s solution and distilled water was studied using the TE66 machine. The effect of load and sliding distance was considered. The results of experiments show that the wear volume of the TZNT alloy is increased with increasing distance because of the greater damage, but the wear volume is not present the same regularity as the increase of load due to the effect of several factors. Only three-body abrasive wear is present at the lower load, while the mixed wear mechanism includes three-body and two-body abrasive wears at the higher load. Through observation, the wear appears under the same sliding distance at various simulated body fluids. The wear appearance is related to the wear mechanism. For wastage map, under the conditions of this paper, the majority of the area is medium wastage, the rest is low wastage, and there is no high wastage. The wastage map is related to the wear volume of the alloy under different conditions.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"1 1","pages":"82-90"},"PeriodicalIF":0.0,"publicationDate":"2016-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89567168","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 : 2015-10-07DOI: 10.1080/22243682.2015.1088795
Juanrong Chen, Ying Zhang, C. Jun, Li-Yan Cheng, Shunsheng Cao
Silica has become a common platform for various catalytic and chemical reactions, biosensor, and drug release owing to its low toxicity, chemical and physical stabilities, large surface area, tunable pore sizes, and well-defined surface chemistry. Therefore, biomolecules encapsulated within a porous silica host has provoked significant interest in the development, application, and market of silica-based biosensors due to its potential application in analytic chemistry and biological science. Considerable progresses have been achieved in past few decades. This review focuses primarily on such advances in synthesis and applications of silica-based biosensors, especially emphasizing development which has occurred in the last 10 years, further driving readers to understand and construct various silica-based biosensors with high sensitivity and high stability.
{"title":"Recent advances in silica-based biosensors: a review","authors":"Juanrong Chen, Ying Zhang, C. Jun, Li-Yan Cheng, Shunsheng Cao","doi":"10.1080/22243682.2015.1088795","DOIUrl":"https://doi.org/10.1080/22243682.2015.1088795","url":null,"abstract":"Silica has become a common platform for various catalytic and chemical reactions, biosensor, and drug release owing to its low toxicity, chemical and physical stabilities, large surface area, tunable pore sizes, and well-defined surface chemistry. Therefore, biomolecules encapsulated within a porous silica host has provoked significant interest in the development, application, and market of silica-based biosensors due to its potential application in analytic chemistry and biological science. Considerable progresses have been achieved in past few decades. This review focuses primarily on such advances in synthesis and applications of silica-based biosensors, especially emphasizing development which has occurred in the last 10 years, further driving readers to understand and construct various silica-based biosensors with high sensitivity and high stability.","PeriodicalId":17291,"journal":{"name":"Journal of the Chinese Advanced Materials Society","volume":"18 16","pages":"257-269"},"PeriodicalIF":0.0,"publicationDate":"2015-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91417925","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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