Pub Date : 2019-04-28DOI: 10.17576/mjas-2019-2302-09
{"title":"EFFECT OF TEMPERATURE ON THE CATALYTIC ACTIVITY OF NEW SYMMETRICAL TETRADENTATE PALLADIUM(II) SCHIFF BASE COMPLEXES IN COPPER-FREE SONOGASHIRA REACTION","authors":"","doi":"10.17576/mjas-2019-2302-09","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-09","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45070596","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-14
{"title":"SEASONAL VARIATION AND ECOLOGICAL RISK ASSESSMENT OF HEAVY METAL CONTAMINATION IN SURFACE WATERS OF THE GANGES RIVER (NORTHWESTERN BANGLADESH)","authors":"","doi":"10.17576/mjas-2019-2302-14","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-14","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45394579","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-20
{"title":"Nd:YAG LASER FABRICATION OF SILICON ELECTRODE PLATES FOR A COMBINED-MODE MICRO DIRECT METHANOL FUEL CELL","authors":"","doi":"10.17576/mjas-2019-2302-20","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-20","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43092544","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-12
{"title":"PYROLYTIC KEY INDICATORS OF BURNT PORCINE TISSUE IN THE PRESENCE OF PETROL UNDER OUTDOOR CONDITIONS","authors":"","doi":"10.17576/mjas-2019-2302-12","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-12","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48540405","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-05
{"title":"ELECTROSPUN POLY(VINYL ALCOHOL) NANOFIBERS DOPED WITH MESOPOROUS SILICA NANOPARTICLES FOR CONTROLLED RELEASE OF HYDROPHILIC MODEL DRUG","authors":"","doi":"10.17576/mjas-2019-2302-05","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-05","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47164633","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-13
Nurasyikin Mohd, W. Khalik, A. A. Azmi
Silica-silver core-shell nanoparticles have received tremendous interests in various applications compared to the bare silver nanoparticles due to several important features such as exhibit higher surface area, the existence of a synergistic effect between the core and the shell, stabilize silver nanoparticles against aggregation, and easily control their properties by the changing shell structure and shell geometry. Due to this significance, this study was conducted to synthesis and characterization of silica-silver core-shell nanoparticles using the facile method without any surface modification needed. In the synthesis route, silica particles have been synthesis based on the Stӧber method. The deposition of nanoscales silver layer on silica surface mainly involves the electrostatic attraction between [Ag(NH3)2] ions and silanol groups, and the addition of polyvinylpyrrolidone (PVP) has been acted as a reducing agent and stabilizing agent. UV-Vis spectroscopy evidenced the absorption of surface plasmon resonance (SPR) of silver nanoparticles in the range 380-450 nm. The crystallinity of silica-silver core-shell nanoparticles showed the facecentered cubic (fcc) structure by X-ray powder diffraction (XRD) analysis. The spherical shape of silica particles with an average 200-220 nm in size has been determined using scanning electron microscope (SEM). The high resolution-transmission electron microscope (HR-TEM) images visualized the successful formation of spherical silver nanoparticles on the silica surface with the average of size 10-40 nm. X-ray photoelectron spectroscopy analysis revealed the elemental compositions exist in the silica-silver core-shell nanoparticles. The synthesized silica-silver core-shell nanoparticles will be used as a potential catalyst in dye treatment application in the future work.
{"title":"SYNTHESIS AND CHARACTERIZATION OF SILICA-SILVER CORE-SHELL NANOPARTICLES","authors":"Nurasyikin Mohd, W. Khalik, A. A. Azmi","doi":"10.17576/mjas-2019-2302-13","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-13","url":null,"abstract":"Silica-silver core-shell nanoparticles have received tremendous interests in various applications compared to the bare silver nanoparticles due to several important features such as exhibit higher surface area, the existence of a synergistic effect between the core and the shell, stabilize silver nanoparticles against aggregation, and easily control their properties by the changing shell structure and shell geometry. Due to this significance, this study was conducted to synthesis and characterization of silica-silver core-shell nanoparticles using the facile method without any surface modification needed. In the synthesis route, silica particles have been synthesis based on the Stӧber method. The deposition of nanoscales silver layer on silica surface mainly involves the electrostatic attraction between [Ag(NH3)2] ions and silanol groups, and the addition of polyvinylpyrrolidone (PVP) has been acted as a reducing agent and stabilizing agent. UV-Vis spectroscopy evidenced the absorption of surface plasmon resonance (SPR) of silver nanoparticles in the range 380-450 nm. The crystallinity of silica-silver core-shell nanoparticles showed the facecentered cubic (fcc) structure by X-ray powder diffraction (XRD) analysis. The spherical shape of silica particles with an average 200-220 nm in size has been determined using scanning electron microscope (SEM). The high resolution-transmission electron microscope (HR-TEM) images visualized the successful formation of spherical silver nanoparticles on the silica surface with the average of size 10-40 nm. X-ray photoelectron spectroscopy analysis revealed the elemental compositions exist in the silica-silver core-shell nanoparticles. The synthesized silica-silver core-shell nanoparticles will be used as a potential catalyst in dye treatment application in the future work.","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46317953","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-02
{"title":"SYNTHESIS AND CHARACTERISATION OF N-ANALINEFERROCENYLAMIDE VIA CARBODIIMIDE COUPLING","authors":"","doi":"10.17576/mjas-2019-2302-02","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-02","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41972009","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-15
{"title":"ULTRAFAST LIQUID CHROMATOGRAPHIC ESTIMATION OF SERTACONAZOLE NITRATE IN PHARMACEUTICALS USING ANALYTICAL QUALITY BY DESIGN","authors":"","doi":"10.17576/mjas-2019-2302-15","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-15","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42712733","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-17
{"title":"METHOD DEVELOPMENT AND VALIDATION FOR QUANTIFICATION OF CORTISOL AND CORTISONE USING ULTRA-HIGH PERFORMANCE LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY","authors":"","doi":"10.17576/mjas-2019-2302-17","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-17","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43102993","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 : 2019-04-28DOI: 10.17576/mjas-2019-2302-10
{"title":"SYNTHESIS AND CHARACTERISATION OF NANOHYBRID ANTI-HYPERTENSIVE DRUG, CAPTOPRIL INTERCALATED INTO ZINC–ALUMINIUM LAYERED DOUBLE HYDROXIDE","authors":"","doi":"10.17576/mjas-2019-2302-10","DOIUrl":"https://doi.org/10.17576/mjas-2019-2302-10","url":null,"abstract":"","PeriodicalId":39007,"journal":{"name":"Malaysian Journal of Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45727706","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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