2014年加拿大会议-国际会议口头报告讲稿

(虽然短短5页，这可是本主一个多月的工作结晶，往对大家有帮助，别忘了给赞)

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）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 effect 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 increasing of ..., the morphology starts by long particles, then, changes into short ones. The corresponding sizes are listed. Moreover, TEM image of A2 demonstrate two