Chế tạo các hạt zns bằng phương pháp đồng kết tủa kết hợp siêu âm và ứng dụng trong cảm biến sinh

I HC QUC GIA H NI TRNG I HC KHOA HC T NHIấN NGUYN TH TR MY CH TO CC HT ZnS BNG PHNG PHP NG KT TA KT HP SIấU M V NG DNG TRONG CM BIN SINH HC Chuyờn ngnh: Vt lý cht rn Mó s: 60440104 LUN VN THC S KHOA HC NGI HNG DN KHOA HC: TS NGUYN HONG NAM H Ni - 2015 LI CM N Li u tiờn, tụi xin c by t lũng kớnh trng v bit n sõu sc nht ti TS Nguyn Hong Nam, ngi thy ó nh hng, ch bo cng nh to iu kin thun li nht cho tụi sut quỏ trỡnh thc hin lun Tụi xin c gi li cm n trõn trng nht ti thy Lu Mnh Qunh, ngi thy ó trc tip hng dn tụi, cm n thy vỡ s quan tõm sõu sc, s giỳp tn tỡnh v nhng ch dn khoa hc quý bỏu hon thnh c bn lun ny tụi khụng th khụng nhc ti em Bựi Hng Nhung, sinh viờn ó trc tip cựng tụi lm thớ nghim, cm n em vỡ s h tr nhit tỡnh v tn tõm Tụi cng xin gi li cm n n ton b cỏc thy cụ v cỏn b ti Trung tõm Khoa hc Vt liu, khoa Vt lý, trng i hc Khoa hc T nhiờn ó ht sc to iu kin cho tụi sut thi gian tụi lm thớ nghim ti Trung tõm Tụi xin cm n cỏc anh ch nghiờn cu sinh, cỏc em sinh viờn ang nghiờn cu, hc ti Trung tõm ó nhit tỡnh giỳp , h tr tụi quỏ trỡnh lm thớ nghim Cui cựng, tụi xin by t lũng bit n n nhng ngi thõn gia ỡnh b, m, cỏc anh ch v bn bố, c bit l chng v gỏi, ngun ng viờn tinh thn v l hu phng vng chc giỳp tụi yờn tõm hon thnh lun Lun c thc hin ti Trung tõm Khoa hc vt liu i hc Khoa hc t nhiờn Phn thc nghim ca lun c hon thnh trờn c s s dng cỏc thit b: Mỏy o nhiu x tia X (XRD) BRUKER 5005, mỏy o hp th UV-vis Shimadzu UV 2405, mỏy o hunh quang - FRUOROLOG v mỏy o tỏn x Raman Horiba Labram3 ti Trung tõm Khoa hc Vt liu, i hc Khoa hc T nhiờn H Ni, i hc Quc Gia H Ni; Mỏy o hp th hng ngoi (FTIR) Shimadzu FTIR Afinity 1S ti Khoa Húa hc, Trng i hc Khoa hc T nhiờn, i hc Quc Gia H Ni; Kớnh hin vi in t truyn qua TEM Joel JEM-1010 ti Vin V sinh Dch t Trung ng Lun c h tr bi hai ti nghiờn cu khoa hc l: Nghiờn cu ch to ht nano bỏn dn pha phõn tỏn tt dung dch bng phng phỏp ng kt ta kt hp siờu õm nhm ng dng y sinh, ch trỡ ti TS Nguyn Hong Nam, Trung tõm Khoa hc Vt liu, Khoa Vt Lý, Trng i hc Khoa hc T nhiờn, i hc Quc Gia H Ni v Nghiờn cu ng dng ca cỏc ht nano vng ch to cm bin xỏc nh nng va virus gõy bnh vi nhy cao, ch trỡ ti PGS.TS Nguyn Hong Hi, i hc Quc Gia H Ni Bờn cnh ú, mt s phộp o ca lun cú s dng cỏc trang thit b thuc D ỏn Cụng ngh nano v ng dng nh h o tỏn x Raman Horiba Labram3 H Ni, thỏng 12 nm 2015 Tỏc gi Nguyn Th Tr My MC LC M U .1 CHNG 1: TNG QUAN .4 1.1 Gii thiu v ht nano bỏn dn ZnS 1.1.1 Cu trỳc mng tinh th ca ZnS .4 1.1.2 Tớnh cht ca vt liu cu trỳc nano 1.2 Mt s phng phỏp ch to ht nano ZnS .11 1.3 Mt s ng dng ca ht nano ZnS .15 1.3.1 ng dng laser v diode 15 1.3.2 ng dng ht nano ZnS lm vt liu phỏt hunh quang 16 1.3.3 ng dng ht nano ZnS lm vt liu ỏnh du sinh hc 16 1.4 Mc tiờu ca lun 19 2.1 Ch to ht nano ZnS bng phng phỏp ng kt ta kt hp siờu õm .21 2.1.1 Dng c v húa cht .21 2.1.2 Quy trỡnh ch to 21 2.2 Mụ hỡnh ỏnh giỏ kh nng ng dng cỏc ht ZnS cm bin in húa xỏc nh nng ADN dung dch 25 2.2.1 Húa cht s dng 25 2.2.2 Kho sỏt kh nng ng dng ca vt liu nano ZnS vo cm bin in húa xỏc nh nng ADN ca virus EBV 27 CHNG 3: KT QU V THO LUN 29 3.1 Ch to ht nano ZnS bng phng phỏp ng kt ta kt hp siờu õm v kho sỏt nh hng ca cỏc iu kin ch to .29 3.1.1 Nghiờn cu nh hng ca nng TSC 29 3.1.2 Nghiờn cu nh hng ca nng 4-ATP 34 3.1.3 nh hng ca cụng sut cũi siờu õm s dng quỏ trỡnh ch to ht ZnS 38 3.2 Mụ hỡnh ỏnh giỏ kh nng ng dng ca vt liu nano ZnS cm bin in húa phỏt hin nng ADN ca virus gõy bnh .41 3.2.1 ỏnh giỏ kh nng liờn kt c hiu ca cỏc phõn t ZnS-4ATP vi ARN2 41 3.2.2 ỏnh giỏ kh nng ng dng ca ht nano ZnS cm bin in húa phỏt hin nng ADN ca virus EBV 43 KT LUN .46 TI LIU THAM KHO 47 DANH MC CC BNG BIU, HèNH V Thuyt minh hỡnh v STT Trang Hỡnh 1.1 Cu trỳc lc giỏc Wurtzite ca tinh th ZnS Hỡnh 1.2 Cu trỳc lp phng gi km Sphalerit ca tinh th ZnS Hỡnh 1.3 Mt s chuyn di in t hp th quang Hỡnh 1.4 Bỏn dn vựng cm thng Hỡnh 1.5 Bỏn dn vựng cm xiờn Hỡnh 1.6 Cỏc quỏ trỡnh hp th v phỏt quang ca tinh th Bng 1.1 Bng 1.2 Bng mt s phng phỏp ch to vt liu nano ZnS/ ZnS pha ó c ỏp dng bi cỏc nhúm nghiờn cu khỏc Bng mt s cht hot húa b ó c cỏc nhúm nghiờn cu khỏc s dng quỏ trỡnh ch to vt liu nano 12 13-14 nh chp TEM ht nano Ag ch to bi Landage S.M v cng Hỡnh 1.7 s, Vin K thut ng dng v Dt may, n , s dng cht 14 hot húa b mt TSC Hỡnh 1.8 Hỡnh 1.9 Mụ hỡnh chung ca cm bin sinh hc Mụ t cu trỳc ca cm bin sinh hc s dng liờn kt c hiu ADN-ARN/AND 17 18 Bng cỏc nng gc ca cỏc húa cht s dng quỏ Bng 2.1 trỡnh thớ nghim ch to cỏc ht nano nn ZnS bng phng 21 phỏp ng kt ta kt hp siờu õm Hỡnh 2.1 S 2.1 S v hỡnh mụ phng thớ nghim ch to cỏc ht nano ZnS bng phng phỏp ng kt ta kt hp siờu õm S ch to ht nano ZnS bng phng phỏp ng kt ta kt 22 23 hp siờu õm vi cỏc nng TSC khỏc Bng 2.2 Bng 2.3 Bng 2.4 Bng 2.5 Hỡnh 2.2 Hỡnh 2.3 Bng 2.6 Th tớch dd TSC thờm vo quỏ trỡnh ch to ht nano ZnS Th tớch dd 4-ATP thờm vo quỏ trỡnh ch to ht nano ZnS Cỏc cụng sut siờu õm s dng ch to ZnS vi cỏc mu cú 4mL v 10 mL TSC l cht hot ng b mt Nng húa cht s dng pha dung mụi PBS 1X Hỡnh v mụ t s o nng ADN vi khun mu dung dch Thit k ca in cc vng s dng cm bin ADN Bng nng ADN ớch nh vo in cc quỏ trỡnh kho sỏt 24 24 25 26 27 28 28 Ph hp th UV-Vis ca cỏc mu cha ht nano ZnS ch to Hỡnh 3.1 bng phng phỏp ng kt ta kt hp siờu õm vi cỏc lng 29 TSC pha khỏc v tớnh toỏn nng lng vựng cm Hỡnh 3.2 Hỡnh 3.3 Bng 3.1 S ph thuc ca nng lng vựng cm vo lng TSC thờm vo quỏ trỡnh ch to vt liu nano ZnS Ph FTIR ca mu cha ht nano ZnS khụng cú TSC v cú ml TSC nh ph FTIR ca cỏc mu cha ht nano ZnS pha ml TSC v cỏc nh ph FTIR ó cụng b 30 31 31 Ph XRD ca cỏc ht nano ZnS ch to bng phng phỏp Hỡnh 3.4 ng kt ta kt hp siờu õm vi cỏc nng TSC khỏc v nh TEM ht nano ZnS ch to vi 10 ml TSC 32 Hỡnh 3.5 Hỡnh 3.6 S ph thuc ca kớch thc tinh th trung bỡnh vo nng TSC tham gia vo quỏ trỡnh ch to ht nano ZnS Ph quang phỏt quang v kớch thớch phỏt quang ca ht nano ZnS 33 34 Ph hp th UV-Vis ca ht nano ZnS ch to bng phng Hỡnh 3.7 phỏp ng kt ta kt hp siờu õm vi nng cht hot húa 4- 35 ATP khỏc Hỡnh 3.8 Hỡnh 3.9 Hỡnh 3.10 Hỡnh 3.11 Hỡnh 3.12 Hỡnh 3.13 Hỡnh 3.14 Cỏc giỏ tr Eg tớnh toỏn t ph hp th UV-vis ph thuc vo lng 4-ATP tham gia vo qua trỡnh ch to Ph hp th hng ngoi bin i Fourier ( hp th - S súng) khong 350 cm-1 n 1700 cm-1ca cỏc mu ZnS Ph hp th hng ngoi bin i Fourier ( hp th - S súng) khong 2000 cm-1 n 3800 cm-1 ca cỏc mu ZnS Ph hp th UV-Vis ca ht nano ZnS vi 10ml TSC vi cỏc cụng sut ch to khỏc S ph thuc ca nng lng vựng cm vo cụng sut siờu õm Ph XRD ca ht nano ZnS ch to vi 10ml TSC vi cỏc cụng sut ch to khỏc Kớch thc tinh th trung bỡnh ca ZnS ch to bng phng phỏp ng kt ta kt hp siờu õm pha 10ml TSC 36 37 37 38 39 39 40 Ph Raman ca cỏc ht ZnS-ATP (a, ZnS-4ATP sau gn vi cỏc phõn t ARN nhn bit EBV (b) v s khỏc bit gia Hỡnh 3.15 hai ph [(b)-(a)] Kt qu cho thy s cú mt ca cỏc nh ph 42 c trng cho cỏc liờn kt ca chui ARN/ADN cựng vi cỏc ht vt liu Bng 3.2 Cỏc nh ph nhiu x Raman ca cỏc ht ZnS-ATP v ZnS- 42 4ATP-ARN Bng 3.3 Cỏc nh ph nhiu x Raman thu c t ph hiu 43 Hỡnh 3.16 in th quột vũng vi cỏc nng ADN ớch khỏc 44 Hỡnh 3.17 S ph thuc ca dũng in thay i in cc vo nng AND ớch ỏp dng phng phỏp o in th quột vũng 45 BNG Kí HIU CC CH VIT TT Ký hiu Gii ngha 4-ATP 4-aminothiophenol CHHBM Cht hot húa b mt CNSH Cụng ngh sinh hc dd Dung dch EBV Virus Epstein Barr EDC 1-Ethyl-3-(3- dimethylaminopropyl)carbodiimide EMA Cụng thc lng hu dng MIA Methyl immidazole PBS phosphate buffer saline solution TT 10 PGS.TS Phú giỏo s, tin s 11 Ph FTIR Ph hp th hng ngoi bin i Fourier 12 Ph UV-Vis Ph hp th vựng t ngoi, kh kin 13 Ph XRD Ph nhiu x tia X 14 Ph PL Ph phỏt quang 15 Ph PLE Ph kớch thớch phỏt quang 16 QD Chm lng t 17 SEM Kớnh vin vi in t quột 18 TEM Kớnh hin vi in t truyn qua 19 TS Tin s 20 TSC Trisodium citrate 21 Zn(Ac)2 Km acetate TI LIU THAM KHO Ti liu Ting Vit Nguyn Ngc Long, (2007), Vt lý cht rn, Nh xut bn i hc Quc Gia H Ni Nguyn c Ngha, (2009), Hoỏ hc nano, Cụng ngh nn v vt liu ngun, NXB Vin Khoa hc Vit Nam, H Ni Nguyn Trớ Tun, (2010), Tng hp ht nano tinh th ZnS pha Ni2+ bng phng phỏp ng kt ta, Tp Khoa hc, i hc Cn Th Nguyn Trớ Tun, Nguyn Vn t, Nguyn Th 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Transmission Electron Microscopy JouARNl of Nano Research, 9, pp 125-132 15 George B Wright, (1968), Light Scattering Spectra of Solids, Proceedings of the International Conference held at New York University 16 Ismail Hakki Boyaci, Havva Tỹmay Temiz , Hỹseyin Efe Geni , Esra Acar Soykut, Nazife Nur Yazgan, Burcu Gỹven, Reyhan Selin Uysal, Akif Gửktu Bozkurt, Kerem laslan, Ozlem Torun, Fahriye Ceyda Dudak eker, (2015), Dispersive and FT-Raman Spectroscopic Methods in Food Analysis, The Royal Society of Chemistry 17 John Rita, Frorence, S., Sasi, (2010), Optical, structural and morphological of bean like ZnS nanostructures by aqueous chemical method, Department of Theoretical Physics, University of Madras, Guindy Campus, India 48 18 Kim Ji Eun, Hwang Cheong-Soo, and Yoon Sangwoon, (2008), Synthesis and Surface Characterization by Raman Spectroscopy of Water-Dispersible ZnS:Mn Nanocrystals Capped with Mercaptoacetic Acid, Bull Korean Chem Soc., Vol 29, No 6, pp 1247 1249 19 Landage 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Hou-Yen, Chu Jian-An, Chang Hsing-Cheng, (2009), Effect of ultraviolet treatment on the contact resistivity and electronic transport at the Ti/ZnO interfaces, Journal of Applied Physics 106, pp 013701-1 013701-5 25 Liu Jun, Ma Junfeng, Liu Ye, Song Zuwei, Sun Yong, Fang Jingrui, (2009), Systhesis of nanoparticles via hydrothermal process assisted by microemulsion technique, China Building Materials Academy, China 26 Lo, H., Y Sylvia, Wang Yung-Yun and Wan Chi-Chao, (2007), Synthesis of PVP stabilized Cu/Pd nanoparticles with citrate complexing agent and its 49 application as an activator for electroless copper desposition, Journal of colloid and Interface Science, Volume 310, Issue 1, pp 190-195 27 Luu Manh Quynh, Nguyen Minh Hieu, Nguyen Hoang Nam, (2014), Fast and Diagnostic Using Fe3O4 Magnetic Nanoparticles and Light Emitting ZnS/Mn Nanoparticles, VNU Jounal of Science, Vol.30, No.3 1-11 28 Murphy, C J., Sau, T., Gole, A and Orendorff, C., (2005), Surfactantdirected synthesis and optical properties of one-dimensional plasmonic metallic nanostructures MRS Bull., 30, pp 349355 29 Nan Xiao and Chenxu Yu, (2010), Rapid-Response and Highly Sensitive Noncross-Linking Colorimetric Nitrite Sensor Using 4-Aminothiophenol Modified Gold Nanorods, Anal Chem 2010, 82, 36593663 30 N T Trang, L M Quynh, T V Nam, H N Nhat, (2013), Charge transfer at organic-inorganic interface of surface-activated PbS by DFT method Surface Science., 608, pp 67-73 31 Ocana, M., Hsu, W P ADN Matijevic, E., (1991), Preparation and properties of uniformcoated colloidal particles, Titania on zinc oxide Langmuir, 7, pp 29112916 32 Ogawa T, Kanemitsu, (1996), Optical properties of Low Dimensional Materials, pp 217 222 33 Otto, C., van den Tweel, T J J., de Mul, F F M., and Greve, J., (2005), Surface-enhanced Raman spectroscopy of DNA bases, Journal of Raman Spectroscopey 34 Parvaneh Iranmanesh, Samira Saeednia, and Mohsen Nourzpoor, (2015), Characterization of ZnS nanoparticles synthesized by co-precipitation method, Vali-e-Asr University of Rafsanjan, Iran 35 Qi Xiao, Chong Xiao., (2008), Synthesis and photoluminescence of watersoluble Mn:ZnS/ZnS core/shell quantum dots using nucleation-doping strategy Optical Materials , 31(2), pp 455-460 50 36 Qin, D., Xiaoxiao, H., Wang, K., Xiao, J.Z., Tan, W., ADN Chen, J., (2007), Fruorescent nanoparticles based indirect immunofluorescence microscope for detection of Mycobacterium tuberculosis Hindawi Publishing Corporation, JouARNl of Biomedicine ADN Biotechnology, Vol Article ID 89364: 1-9 37 Raju Kumar ChADNrakar, Bagle, R., N., and ChADNra, B., P., (2015), Systhesis, characterization ADN thermoluminescence studies of Mn-doped ZnS nanoparticles, The Jourrnal of Biological ADN Chemical Luminessence 38 Rodrigo Marques Ferreira, Maycon Motta, Augusto Batagin-Neto, Carlos Ferderico de Oliveira Graeff, Paulo Noronha Lisboa-Filho, Francisco Carlos Lavarda, (2014), Theoretical Investigation of Geometric Cofigurations and Vibrational Spectra in Citric Acid Complexes, Materials Research, Universidade Estadual Paulista 39 Roman Tuma, George J Thomas Jr, (2006), Raman Spectroscope of Viruses, Viley Online Library 40 Rosensweig, R.E., (1985), Ferrohydrodynamics, Cambridge University Press 41 Sharma Manoj, Jain Turan, Singh Sukhvir, and Pandey, O.P., (2012), Tunable emission in surface passivated Mn-ZnS nanophosphors and its application for Glucose sensing, Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140407, Punjab, India 42 Swapna K., Mahamuda S., Srinivasa Rao A, Shakya S., Sasikala T., Haranath D., Vijaya Prakash G., (2014), Optical studies of Sm3+ ions doped zinc alumino bismuth borate glasses, Spectrochim Acta A Mol Biomol Spectros, pp 53-56 43 Tiwary, K., P., Choubey, S., K., ADN Sharma, K., (2013), Structural and 51 Optical properties of ZnS nanoparticles synthesized by microwave irradiation method, Birla Institute of Technology, Patna Campus, India 44 Tran Thi Quynh Hoa, Le Van Vu, Ta Dinh Canh, and Nguyen Ngoc Long, (2009), Preparation of ZnS nanoparticles by hydrothermal method, Vietnam National University, Vietnam 45 Vij, D.R and Singh, N., Luminescence and Related Properties of II-VI Semiconductor, p.203 46 Y.Liu, M Tourbin, S.Lachaize, and P Guiraud, (2013), Silica nanoparticles separation from water: aggregation by cetyltrimethylammonium bromide (CTAB), Chemosphere, Elsevier, 2013, vol 92, pp 681-687 47 Yu Zhi-gang and Lai Y Rebecce, (2013), Effect of Signaling Probe Conformation on Sensor Performance of a Displacement-Based Electrochemical DNA Sensor, Anal Chem, 85(6), pp 3340 3346 52 [...]... học nano, Công nghệ nền và vật liệu nguồn, NXB Viện Khoa học Việt Nam, Hà Nội 3 Nguyễn Trí Tuấn, (2010), Tổng hợp hạt nano tinh thể ZnS pha tạp Ni2+ bằng phương pháp đồng kết tủa, Tạp chí Khoa học, Đại học Cần Thơ 4 Nguyễn Trí Tuấn, Nguyễn Văn Đạt, Nguyễn Thị Phƣơng Em và Lê Văn Nhạn, (2011), Tổng hợp thủy nhiệt và nghiên cứu tính chất của các hạt vi cầu và nano hình cầu xốp ZnS, Tạp chí Khoa học, Đại... human serum albumin ADN Mn‑doped ZnS quantum dots J Iran Chem Soc., 12(10), pp 1729-1738 7 Bijoy Barman, Sarma, K C., (2011), Luminescence properties of ZnS quantum dots embedded in polymer matrix Chalcogenide Letter., 8(3), pp 171-176 8 Bhattacharjee, B., Ganguli, D., Iakoubovskii, K., Stesmans, A and Chaudhuri, Y., (2002), Synthesis and characterization of sol-gel derived ZnS: Mn2+ nanocrystallites embedded... Raman Spectroscopey 34 Parvaneh Iranmanesh, Samira Saeednia, and Mohsen Nourzpoor, (2015), Characterization of ZnS nanoparticles synthesized by co-precipitation method, Vali-e-Asr University of Rafsanjan, Iran 35 Qi Xiao, Chong Xiao., (2008), Synthesis and photoluminescence of watersoluble Mn :ZnS/ ZnS core/shell quantum dots using nucleation-doping strategy Optical Materials , 31(2), pp 455-460 50 36 Qin,... Sasi, (2010), Optical, structural and morphological of bean – like ZnS nanostructures by aqueous chemical method, Department of Theoretical Physics, University of Madras, Guindy Campus, India 48 18 Kim Ji Eun, Hwang Cheong-Soo, and Yoon Sangwoon, (2008), Synthesis and Surface Characterization by Raman Spectroscopy of Water-Dispersible ZnS: Mn Nanocrystals Capped with Mercaptoacetic Acid, Bull Korean Chem... Tiwary, K., P., Choubey, S., K., ADN Sharma, K., (2013), Structural and 51 Optical properties of ZnS nanoparticles synthesized by microwave irradiation method, Birla Institute of Technology, Patna Campus, India 44 Tran Thi Quynh Hoa, Le Van Vu, Ta Dinh Canh, and Nguyen Ngoc Long, (2009), Preparation of ZnS nanoparticles by hydrothermal method, Vietnam National University, Vietnam 45 Vij, D.R and Singh,... colloid and Interface Science, Volume 310, Issue 1, pp 190-195 27 Luu Manh Quynh, Nguyen Minh Hieu, Nguyen Hoang Nam, (2014), Fast and Diagnostic Using Fe3O4 Magnetic Nanoparticles and Light Emitting ZnS/ Mn Nanoparticles, VNU Jounal of Science, Vol.30, No.3 1-11 28 Murphy, C J., Sau, T., Gole, A and Orendorff, C., (2005), Surfactantdirected synthesis and optical properties of one-dimensional plasmonic... (2011), Progress in Materials Sciene, Fudan University, China, pp 178 – 182 14 Gayou, V.V., Salazar-Hernández, B., Delgado Macuil, R., Zavala, G., Santiago, P and Oliva, A.I., (2010), Structural Studies of ZnS Nanoparticles by High Resolution Transmission Electron Microscopy JouARNl of Nano Research, 9, pp 125-132 15 George B Wright, (1968), Light Scattering Spectra of Solids, Proceedings of the International... of Biomedicine ADN Biotechnology, Vol Article ID 89364: 1-9 37 Raju Kumar ChADNrakar, Bagle, R., N., and ChADNra, B., P., (2015), Systhesis, characterization ADN thermoluminescence studies of Mn-doped ZnS nanoparticles, The Jourrnal of Biological ADN Chemical Luminessence 38 Rodrigo Marques Ferreira, Maycon Motta, Augusto Batagin-Neto, Carlos Ferderico de Oliveira Graeff, Paulo Noronha Lisboa-Filho,... Online Library 40 Rosensweig, R.E., (1985), Ferrohydrodynamics, Cambridge University Press 41 Sharma Manoj, Jain Turan, Singh Sukhvir, and Pandey, O.P., (2012), Tunable emission in surface passivated Mn -ZnS nanophosphors and its application for Glucose sensing, Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140407, Punjab, India 42 Swapna K., Mahamuda S., Srinivasa... (2012), Production of aqueous spherical gold nanoparticles using conventional ultrasonic bath, Nanoscale Research lettters, 7:420 21 Li, G.H., Su, F.H., Ma, B.S, Ding, K., (2004), Photoluminescence of doped ZnS nanoparticles under hydrostatic pressure, phys.stat.sol (b), 241, No.14,3248-3256 22 Li Z.Q., Liu Q.Q., Li J.J., Sun Z., Chen Y.W., Yang Z., Huang S.M., (2012), Growth of Zn doped Cu(In, Ga)Se2 thin