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7/25/2019 Nano Oxide CuO ZnO Cu
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i hc Bch Khoa TP.HCMKhoa K thut Ha Hc
GVHD: PGS.TS. Nguyn Ngc HnhNhm: 14
STT TN MSSV
1 Chu Thnh An 61200003
2 Nguyn Hong 61201209
3 Lu Cnh Pht 61202675
4 ng Hng Nhung 612026101
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Nano ng oxit
Nano Km oxit
Nano ng
2
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I. Vt Liu NaNo CuOI. Vt Liu NaNo CuO
Tng quan
3
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T Cu2+ Phng php ha mPhng php kt ta t
Phn hy nhit trc tip
Chiu x vi sng v sol-gel
T Cu Phng php plasma
Phng php n dy
4
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PhngPhng phpphp solsol--gelgel
CuSO4.5H2O
International Journal of ChemTech ResearchVol.6, No.3, pp 2220-2222, May-June2014
3 2 11 3 aTrn(CH2)6NH4
NH3
Ly tm, ra, sy3h
4000C 23nm5000C 25nm6000C 28nm
5
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PhngPhng phpphp solsol--gelgel
Kchthc:
-40 nm.
Thng stng hp:quyt nhtnh cht.
Int. J. Electrochem. Sci.,8 (2013)8614 - 8622 6
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Phng php ha m
(CH3COO)2Cu + NaOH + (NH2)2CO + PVPcng vi vic chiu x cao
CuO cu tc nano n t
(CH3COO)2Cu : tin cht; NaOH: tc nhnct gim; etanol: dung mi
kch thc 4nm tinh khit cao
J. Mater. Environ. Sci. 4 (5) (2013) 792-7977
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PhngPhng phpphp nhitnhit
Dd Na2CO3 , CuSO4, kt taCu4(SO4)(OH)6 nung (7500C)
nano dng cu.Nhit phn Cu2O
Vol. 12(47), pp. 6650-6660, 20 November, 2013
8
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PhngPhng php n dyphp n dy
Nhit canc kch
thc canano ngoxit.
1-30 C: hnh cu, vi D= 10-20 nm60 C : dng bn vi S= 650*40-80nn
J. Mater. Environ. Sci. 4 (5) (2013) 792-797
9
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Khng khun
Xc tc
Tbo nnglng mt tri
Cmbin
10
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KhngKhng khunkhun
-Aeromonashydrophila
li-
AeruginosaBS3
- Eschericiacoli v
Staphylococcusaureus, E. col
sciencedirect: Nanomedicine Journal Vol. 1, No. 3, Spring 2014, page 198-204
11
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XcXc tctc
Oxi ha CO
thnh CO2 Tn h pyrroles t:
este -ketov
nitromethane
[2,3-c]phenazineiu chchc benzo[a] pyrano
caoC th ti ch
cht xc tc
J. Mater. Environ. Sci. 4 (5) (2013) 792-797
12
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CmCm binbin
CuO di dng nano
CO ethanol
Ethyl acetate
X. Gao, J. Bao, G. Pan, H. Zhu, P. Huang, F. Wu, D. Song, J. Phys. Chem. B., 108(2004) 5547
13
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C TNH V TNH CHT
Nhit si: 12010C; Nhit nng chy: 20000C;T trng: 6,3 g/cm3; Tnh khng khun,
Hnh dng ca nano ng c chp li bng TEM
14
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II. VII. Vt lit liu NaNo ZnOu NaNo ZnO
Tng quan
15
)) T hT h hh ll
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11)) TnhTnh chchtt vvtt llccaa nanonano kkmm oxitoxit
Cu trc tinh th
Tnh cht cv nhit
Tnh cht in
Tnh cht quang
Tnh cht bmt16
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CCuu trctrc tinhtinh thth
Cu trc tinh th ZnO c chiathnh 3 dng
Cu trc lcphng wurtzite
Cu trc lpphng gi km
Cu trc lpphng kiu NaCl17
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iu kin nhit
CCuu trctrc llcc gicgic
WurziteWurzite
tn ti dng lcgic wurtzite. y lcu trc bn vngnht ca ZnO.
18
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Cu trc lp phng n gin kiu NaCl l cutrc gi bn ca tinh th ZnO chtn ti trong iukin p sut cao
CCuu trctrc llpp phphngngnn giginn kikiuu NaClNaCl
19
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nhit cao, tinh th
ZnO tn ti
trng thi
CCuu trctrc llpp phphngng
gigi kkmm
c u r c p p ng gkm, y l cu trc gibn ca ZnO.
20
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Tnh chTnh cht ct cv nhiv nhitt
ZnO l mt loi vt liutng i mm vi cngxp x4,5 trn thang Mohs
un r n v nnhit ln, gin n nhitthp v nhit nng chy
cao
21
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Cc loi sai hng im:
1 Nt khu t
TnhTnh chchtt iin
(2) T xen k(3) Tp cht xen k(4),(5) Tp cht thay th
22
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TnhTnh chchtt iin
Trong tinh th ZnO tn ti cc v tr trng oxi vcc nguyn t km xen k trong tinh th => bndn n.
23
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TnhTnh chchtt iin
Vn tc di chuyn in t ca ZnO thay imnh theo nhit v kch thc, c th tti a 3000cm2/V.s, cn vn tc di chuyn
ca l trng khong t 5-30cm2
/VsZnO
khiSi nanoZnO
Si nanobn dnp-Si
Si nanobn dnp-Ge
Si nanobn dnn-GaN
Planar Si
MOSFET
SWCNT
FET
Vn tc dichuyn int(cm2/V.s)
200 1175-
3000
300 600 150-
650
1000-
1400
1000-
20000
24
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TnhTnh chchtt quangquang
25
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TnhTnh chchtt quangquang
ZnO c th thay th GaNang c s dng trongcc thit b quang in
o ng rong p m vnh sng xanh hoc UV
C th thay inng lng vngcm ca ZnO khi
thm tp cht 26
T hT h hh bb
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TnhTnh chcht bt b mmtt
Tnh cht b mt ca cc ht nanohoc mng mng ZnO ng mt vai trquan trng trong cc lnh vc a dng
Kh nng hp ph trn b mt
Tnh thmt
27
22)) CC hh gg hh ii
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22)) CcCc phphngng phpphp iiuuchchnanonano kkmm oxitoxit
Phngphp ha
Kt tac kim
sot
Phngphp
sol-gel
28
PhPh h hh h hh
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PhPhngng php haphp ha cchhcc
*Phng php ha c hc l mt phng phpr v n gin iu ch cc ht nano trnmt quy m ln.
29
PhPhng php hang php ha cc hhcc
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PhPhng php hang php ha cchhcc
*Thc nghim cho thy rng kch thcca cc tinh th nano ZnO ph thucvo thi gian nghin v nhit nung.
* thi gian nghin => kch thc tinhth.
* nhit nung gy => kch thctinh th.
30
K ki
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Kt ta c kim sot
*Kt ta c kim sot l mt phng phpc s dng rng ri trong vic iu chnano km oxit.
*oxy ha kh t pht v nhanh chng camt dung dch mui km khi s dng mt
cht kh
.*Qu trnh kt ta c iu khin bi cc
thng s nh pH, nhit v thi gian ktta. 31
KKt tt t kiki tt
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KKt tt ta ca c kikim sotm sot
32
PhPhng php solng php sol gelgel
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PhPhng php solng php sol--gelgel
33
Zn(CH3COO)2.2H2O
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(C 3COO)2. 2ONH4OH
Ha tan
Nc
T = 60oCt = 30 pht
Khuy1-2 git NH3
Zn NH 2+
Zn(OH)2thy phn
t = 5hKhuy
Gel m 34
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Gel m
T = 50oCt = 1h
Sy
Gel kh
T = 500oCt = 4h
Nung
Snphm
35
PhPhng phpng php solsol gelgel
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PhPhng phpng php solsol--gelgel
Hnh nh TEM cho thy cc ht ZnO thuc t phng php ny c kch thct 20-50 nm 36
3)3)ngng ddngng ccaa
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3)3)ngng ddngng ccaananonano kkmm oxitoxit
Do tnh cht a dng ca n, c tnh cht vtl v ha hc, km oxit c s dng rng ritrong nhiu lnh vc
37
33)) ngng ddngng ccaa
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33)) ngng ddngng ccaananonano kkmm oxitoxit
Trong cng nghip cao su
v mphm
Cng nghip dt may
Trong cng nghip in in tQuang xc tc
38
III Vt Liu NaNo Cu
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III. Vt Liu NaNo Cu
Tng quan
39
11)) PhPhngng phpphp ttng hng hpp
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11)) PhPhngng phpphp ttng hng hpp
Phng php khvt l
Phng php khha hc
Phng php khl ha
40
PhPh h khh kh t lt l
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PhPhngng php khphp khvvt lt l
Phng kh vt l dng cc tc nhn vt l nhnhit hay in t , sng in t nng lng caonh tia gamma ,tia t ngoi tia laser kh ion kim
.
41
PhPh gg h khh kh h hh h
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PhPhngng php khphp khha hha hcc
*Phng php kh ha hc l dng cc tcnhn ha hc kh ion kim loi thnh kim loi.
42
PhPh h khh kh l hl h
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PhPhng php khng php khl hal ha
Nguyn l ly
phng phptrung gian
gia ha hcv vt l.
ng p ngphp in
phn kt hp
vi siu m to htnano.
43
CcCc tnh chtnh cht ct ca nano a nano ngng
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CcCc tnh chtnh cht ct ca nano a nano ngng
Tnh cht quang hc
Tnh ch t xc tc
Tnh cht nhit
Tnh cht in44
TnhTnh chcht quang ht quang hcc
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TnhTnh chcht quang ht quang hcc
Hin tng cng hng Plasmon b mt(surface plasmon resonance) do in t t do
Kim loi c nhiu in t t do, cc in tt do ny s dao ng di tc dng cain t trng bn ngoi nh nh sng
45
Tnh chTnh cht xc tct xc tc
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Tnh chTnh cht xc tct xc tc
Nano ng c a vo cht mang ( NiFe2O4,ZnFe2O4..) lm tng hot tnh xc tc v chnlc ca cht mang, gim tnh c hi cng nhkhng u c ca vt liu.
46
TnhTnh chcht it inn
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TnhTnh chcht it inn
Tnh dn in ca kim loi rt tt,hay in tr ca kim loi nh nhvo mt in t t do cao.
47
ngng ddng cng ca nanoa nano ngng
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gg gg gg
Trong c kh ch to
Dng trong cng ngh xc tc
Phn bn vi lng
Dng lm truyn nhit, dn in
V cc ng dng khc48
TrongTrong cckh chkh chttoo
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gg V dV dn nhin nhit, dt, dn in inn
49
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