作业帮 > 英语 > 作业

英语翻译Table 2 and Fig.3 show the influences of particle size a

来源:学生作业帮 编辑:百度作业网作业帮 分类:英语作业 时间:2024/05/22 04:30:50
英语翻译
Table 2 and Fig.3 show the influences of particle size and contents of PEG on
morphology of TiO2 film.Pore size and porosity increased with the amount of the
added PEG.The SEM images (Fig.4) also confirmed these phenomena.The shape
and size of TiO2 crystallites did not change with the addition of PEG.In addition,
Fig.5 shows that roughness factor (rf) and porosity of the film changed linearly with
the amount of PEG.While TiO2 particles in the sol were surrounded by adsorbed
PEG molecules under the low concentration conditions,in the very high
concentration conditions,excess amount of the PEG seems to exist as large
aggregates in the sol.Therefore,larger pores should be formed in the film during the
sintering process with the increase of PEG.
The roughness factor (rf) of T iO2 film decreased as the particle size of TiO2
crystallites increased.The average pore size and porosity of the film decreased with
decreasing particle size because the void between the particles became smaller with
the decrease of the particle size.The mesoporous film became more brittle when the
concentration of PEG was higher than 50 wt%:From these results,we found that
pore size,porosity and effective area of the mesoporous film could be precisely
controlled by combination of the autoclaving temperature for the sol preparation
and the amount of PEG in the paste.
英语翻译Table 2 and Fig.3 show the influences of particle size a
表2和图.3显示的影响粒子的大小和内容,就挂
形态的二氧化钛薄膜.孔径大小和孔隙率增加与金额的
补充挂.扫描电镜图像(图4 )也证实了这种现象.形状
和大小的二氧化钛晶体,没有改变,与另外的PEG .此外,
图.5可以看出,粗糙度因子( RF )及孔隙度的电影改变了线性
额的比值.而二氧化钛粒子溶胶四周吸附
聚乙二醇分子在低浓度条件下,在非常高
浓度条件下,过量的联系汇率制度似乎存在着大
碎石溶胶.因此,较大的孔隙中,要形成在这部影片中,在
烧结过程中随挂.
粗糙度因子( RF )的T io2电影下降,颗粒大小的二氧化钛
微晶增加.平均孔径及孔隙度的电影下降
减小颗粒大小,因为这个空档之间颗粒变小,与
减小颗粒尺寸.介孔薄膜变得更加脆当
浓度的PEG高于50 wt %的:从这些结果,我们发现
孔径大小,孔隙率和有效面积的介孔薄膜,可恰恰
控制相结合的蒸汽温度为溶胶的制备
和数额的PEG在糊.