SCI考试

研究生科技论文写作考试试题2011

一 写出下列有关SCI论文中一些英文缩写的中文和英文意思（5题，每题2分，共10分）

SCI：

ISI：

SSCI：

ISTP：

IF：

二 写出下列单词或短语的中文意思（10题，每题1分，共10分）

（1）intraparticle

（2）specific surface area

（3）photocatalytic activity

（4）complete mineralization

（5）biomemitic photocatalysis

（6）hierarchically bimodal macro-/mesoporous structures

（7）a simple and environmentally benign method

（8）average crystallite size

（9）X-ray photoelectron spectroscopy

（10）photoluminescence spectra

三 判断下列说法是否正确，正确打√，错误的打×（5题，每题2分，共10分）

影响因子=（该刊前两年发表论文在统计当年被引用的总次数）÷（该刊前两年发表论文总数）

SCI影响因子是衡量一个学术期刊影响力的重要指标。

SCI影响因子由Eugene Garfield在20世纪50年代创立。

中国学者的论文不易被高影响因子的SCI期刊接受，主要是语言问题。

实验结果的描写一般采用现在时。

四 下列观点是否正确，正确打√，错误的打×（10题，每题2分，共20分）

1. 论文题目一般是一个句子。

2. 论文标题和课题名称的区别在于，前者主要是讲你发现了什么，后者主要是讲你将研究什么。

3. 摘要一般具有独立性和自明性，并包含论文的主要内容。

4. 引言的作用是揭示论文的主题、目的和总纲，便于读者了解论文所述内容的来龙去脉。

5. 实验内容的描述一般用现在完成时。

6. 研究结果是一篇论文的核心。

7. 论文表格一般采用三线表。

8. 讨论部分是一篇论文的精华，全文的灵魂，也是最难写的部分。

9. 参考文献一般是自己阅读过的文献。

10.论文的SCI影响因子随年度变化。

五 判断下列句子表达是否正确，正确打√，错误的打×（20题，每题1.5分，共30分）

1. All TiO2 powders prepared at 180 °C showed trimodal pore-size distributions in the macro-/mesoporous region. fine intraparticle mesopores with peak pore diameters of ca. 3.7 6.9 nm, larger interparticle mesopores with peak pore diameters of ca. 23 39 nm, and macropore with pore diameter of ca. 0.5 3 ím.

2. A new concept “biomemitic photocatalysis” has been proposed, which may provide new insight into preparation of advanced photocatalytic materials by mimicking surface structures of plant leaves.

3. All chemicals used in this study were used as received from Shanghai Chemical Regent Factory of China without further purification.

4. The desorption isotherms was used to determine the pore-size distribution using the Barret Joyner Halender (BJH) method, assuming a cylindrical pore modal.

5. The analysis of acetone, carbon dioxide, and water vapor concentration in the reactor was conducted on line with a Photoacoustic IR multigas monitor (INNOVA Air Tech Instruments Model 1312).

6. This is due to the fact the hydrolysis reaction of TBOT is not complete at room temperature and large amounts of unhydrolyzed alkyls still remain in the powders,which prevent crystallization to anatase by adsorbing on the surface of TiO2 particles.

7. The XRD results reveals that the hydrothermal treatment promotes the phase transformation of amorphous to anatase, growth of crystallite, and the formation of brookite phase at a relatively low temperature, probably due to cooperative effects of pressure, temperature, and water as a catalyst.

8. After hydrothermal treatment at 180 °C for 1 h, the isotherm is of type IV (BDDT classification) and has two hysteresis loops, indicate bimodal pore-size distributions in the mesoporous and macroporous region.

9. Second, with increasing hydrothermal time, the two separate hysteresis loops gradually join together as one, implying that the pore-size distributions of intraaggregated pores and interaggregated ones tend to overlap, as confirmed in Figure 3.

10. The above results highlight a facile hydrothermal process for the synthesis of hierarchical sponge-like trimodal macro-/mesoporous structures in the absence of templates and additives.

11. The hierarchically macro-/mesoporous structures are beneficial enhancing the adsorption efficiency of light and the flow rate of the gas molecules.

12. Biology has developed such highly efficient hierarchical structures at ambient temperature to achieve rapid gas exchange over large surface area and an optimal solar-light harvesting.

13. For example, lungs of animals have such hierarchical and fractal network structures, which allow air to be exchanged rapidly, 31 and trees have such hierarchically structures from the stem to the leaves to accelerate the movement of water absorbed by roots and transported throughout the plant.

14. Based on the above-described hierarchically sponge-like multimodal porous structures and enhanced photocatalytic activity, and inspired by these marvellous natural structures, a new biomemitic photocatalysis concept has been proposed in the field of photocatalysis.

15. This new concept may provide new insight into preparation of advanced photocatalytic materials and design of highly efficient photocatalytic reaction by mimicking the hierarchical surface structures and photosynthesis of green plant leaves.

16. The photocatalytic activity of semiconductors are due to the production of excited electrons in the conduction band of the semiconductors, along with corresponding positive holes in the valence band by the absorption of UV illumination.

17. The X-ray diffraction (XRD) patterns were obtained on a Philips MPD 18801 X-ray diffractometer using Cu Kα radiation at a scan rate of 0.05° 2θS-1 were used to determine the crystallite size and identity.

18. Figure 3 show the effects of calcination temperature on phase structures of F--doped TiO2 powders prepared from the H2O-NH4F mixed solution with RF 1.

19. One possible explanation for this photocatalytic activity ehhancement is that F doping converts some Ti4+ to Ti3+ by charge compensation.

20. We are indebted to Prof. S. K. Hark and graduate student Kwan Sai Iu (Department of Physics, The Chinese University of Hong Kong) for acquiring the PL spectra.

六 改错，下面这段话中有10个错误，请找出并改正（每个错误2分，找出和改正各1分共20分）

The photoctalytic activity of sponge-like macro-/mesopoeous titania is evaluated by gaseous photocatalytic oxidation decomposition of acetone. Figure 7a displays the comparison of photocatalytic activity (or apparent reaction rate constant) of the titania samples before and after hydrothermal treatment at 180 °C and P25. It can seen that the hydrothermal time have a great effect about the photocatalytic activity of TiO2. Although the as prepared samples before hydrothermal treatment have the largest specific surface areas (at 0 h) (see Table 1), there is not obvious photocatalytic activity observed presumably due to the as-prepared TiO2 powders consist of amorphous phase. For the sample prepared at 180°C for 1 h, it shows obviously photocatalytic activity due to the formation of anatase phase. With increasing hydrothermal time, the photocatalytic activity of the samples greatly increase due to the enhancement of the crystallization. At 24 h, the highest photocatalytic activity is observed and the k value reached 9.12×10-3 min-1. With further increasing hydrothermal time to 36 h, the k value decreases due to the decrease in specific surface area. The k value of P25 is determined to be 3.01×10-3 min-1 at the same experimental conditions, which is well-known for its superior photocatalytic activity. This is mainly ascribed to the fact P25 contains anatase (78% in mass fraction) and rutile (22%) two phases (determined by XRD).

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