2014年加拿大会议-国际会议口头报告讲稿

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P1

Greeting:

Thanks for introduction. Hello everyone. Wellcome to my talk. Thank the

organisers for giving me this opportunity.

Self-introduction:

My

name

is

[your

name]

a

phd

student

at

group

of

Prof.

[your

advisor]

who is sitting there. We come from [

your University]

, China. As you know,

nanjing is a city with a long history which locates in the south-east of China.

Subject

:

Today, I’m going to talk about

our recent work about

[your title]

.

P2

Outline:

My presentation is divided into four parts:

Background; Morphology control;

Catalysis & Drug- delivery; Summary.

P3

（

Introduction of the background

）

In the past, numerous researches have been done

focusing

on

micro-

and

macro- scale.

But,

there

is

a

central

issue,

how

the

understanding at the micro-scale can

enable predictions of functional behavior

at the

macro-scale.

Then,

a

new

awareness,

also

an

open

concept

‘mesoscale

science’

has

recently emerged to link the micro- to the macroscale.

It is clear that porous materials have great potential due to their various composition,

structure and morphology.

（

My theme

）

In this talk, we focus on controllable synthesis of morphology and use

it as mesoscale to obtain the quantification and optimization of the relevant processes.

P4

（

Catalysis VS your materials

）

As for heterogeneous catalysis, it is widely known that macroscopic parameters such

as

the

yield,

selectivity,

products

and

rate

of

chemical

reactions

are

related

to

the

nano-structure of catalyst including morphology, size, pore and composition. Because

nano-structure can produce various effects on chemical process such as

…

.

P5

（

Drug-delivery VS your materials

）

And when it comes to drug delivery, the morphology and size of porous materials are

two main subjects.

(you can refer to some references to support your idea)

Prof.

Mou

found

that

rod-like

particles

have

many

优势（

pointing< /p>

）

compared

to

sphere morphology.

Prof. Tang

studied mesoporous silica nanoparticles with aspect ratio from 1 to 5 as

drug-carrier.

She

found

that

the

AR

of

MSNs

affect

greatly

these

aspects.

vivo

biodistribution, clearance, and biocompatibility and so on.

In

addition,

she

proposed

that

particles

with

a

larger

AR

generally

affect

cells

to

a

larger degree compared to MSNs with a smaller AR. Therefore, given this result, it is

necessary to expand the shape e

?

ect studies to a wide range.

P6

Periodic

mesoporous

materials

have

been

widely

studied

in

many

fields,

such

as

catalysis,

sensor,

drug-delivery

and

separation.

Because

they

have

Large

Surface

Area,

Adjustable

Pore

Size,

High

Thermal

Stability

and

Flexible

Framework.

Especially,

the

Flexible

Framework

make

the

controllable

synthesis

of

morphology

possible.

P7

(

emphasize the importance of your work

)

Thus, we use mesoporous silica as

Good Carrier Or Support.

Next, we try to obtain

the

controllable

synthesis

of

morphology

and

size

.

After

that,

we

can

introduce

a

variety

of

organic

or

inorganic

modification

.

Finally,

the

functioned

mesoporous

materials

with

controllable

morphology

and

size

can

paly

as

a

good

meso-scale

to

expect

the

quantification

and

optimization

of

the

relevant

processes

between

micro-scale

and

macro-scale.

However,

compared

to

the

synthesis

of

mesoporous

silica, the two parts are more difficult, which not only need a flexible method, but also

need

fine

control

of

synthesis

conditions.

Therefore,

it

is

still

a

challenge

for

researchers.

P8

(

introduction of synthesis process

)

Next, we are going to introduce our work about morphology control.

B

riefly,

in

the

synthesis

process,

we

use

two

surfactants.

we

put

…

and

…

into

concentrated

…

.

Until

the

solution

became

transparent,

…

were

added

into

the

solution,

we

add

silicon

source

and

heteroatom

source

under

certain

conditions

.

Afther the following treatments: Hydrothermal treatment, centrifugation, dryness and

calcination. Finally, we get the product.

Obviously,

this

process

is

simple,

and

the

two-surfactants

are

cheap

and

easy- obtained. So, it has great potential for scale-up production.

P9

(

my aims of my work

)

In order to get full control of length, diameter, and pore size of nanotube, we try to

change synthesis conditions

…

and so on. However, in this dual-surfactant system, we

found the morphology was affected greatly

…

.

P10

(

introduction of my detailed work

)

First of all, we test the effects of the amount of ... on morphology. We increase the

amount

of ...

and

keep ...

constant.

The

SEM

images

from

a

to

g

show

with

the