Nano Oxide CuO ZnO Cu

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

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I. Vt Liu NaNo CuOI. Vt Liu NaNo CuO

Tng quan

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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

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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

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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


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Khng khun

Xc tc

Tbo nnglng mt tri

Cmbin

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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

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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


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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

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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

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II. VII. Vt lit liu NaNo ZnOu NaNo ZnO

Tng quan

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)) 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.

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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

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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.

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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

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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

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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.

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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

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TnhTnh chchtt quangquang

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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

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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

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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.

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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.

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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

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PhPhng php solng php sol gelgel


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PhPhng php solng php sol--gelgel

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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

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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

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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

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III Vt Liu NaNo Cu


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III. Vt Liu NaNo Cu

Tng quan

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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

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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

.

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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.

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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.

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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

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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.

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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.

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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

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Nano Oxide CuO ZnO Cu