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摘要 几句话翻译 急
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HRTEM显示形成核壳结构的核与壳的接触边界，二氧化钛与碳化钨的晶界有较发育的共格结构，大面积的缺陷（线缺陷和点缺陷），导致两者均存在晶格畸变。且结合XPS分析结果中形成核壳结构中Ti元素的化学位移得到验证，推测WC和TiO2界面可能以Ti-O-W键的形式相结合。 从循环伏安法测试对甲醇的电氧化行为可以明显看出，具有核壳结构的碳化钨/二氧化钛纳米复合材料电催化性能明显高于没形成核壳结构的样品。形成核壳结构的两个样品W/Ti=1:3明显比W/Ti=1:1的碳化钨含量少，但其非整比活性相WC1-x的单位活性位数要多于WC，综合结果是两者活性相似。从经济效益看制备钨源比W/Ti=1:3、反应时间为5小时为核壳结构碳化钨/二氧化钛纳米复合材料最佳的制备工艺。 [ Last edited by saral on 2011-4-17 at 08:46 ] |
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| HRTEM showed the formation of nuclear contact boundary between the shell of the core-shell structure ,in which titanium dioxide and tungsten carbide grain boundaries had a more coherent structure with large area of defects (line defects and point defects), leading to the distortion in both existing lattice,which was verified through XPS analysis results and the chemical shift of Ti in the formed core-shell structure, suggesting that the interface of WC and TiO2 may be combined in the form of Ti-OW. |
2楼2011-04-17 08:55:35
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ringzhu: 敢问你这个翻译的是？ 2011-04-24 19:43:56
| Based on the 循环伏安法测试对甲醇的电氧化行为, it is concluded that 电催化性能 of 碳化钨/二氧化钛纳米复合材料 with 核壳结构 is significantly greater than those without 核壳结构. In the two sample which have 核壳结构, the one with W/Ti=1:3 has less 碳化钨 than the one with W/Ti=1:1. On the other hand, 其(?)非整比活性相WC1-x的单位活性位数要多于WC. Combining these two effects, the 活性s of the two sample are close. Considering economic factors, the best conduction for producing 核壳结构碳化钨/二氧化钛纳米复合材料 is the combination of a 钨源比W/Ti equals to 1:3 and a 反应时间 equals to 5 hours. |
3楼2011-04-24 03:11:11
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Based on the 循环伏安法测试对甲醇的电氧化行为, it is concluded that 电催化性能 of 碳化钨/二氧化钛纳米复合材料 with 核壳结构 is significantly greater than those without 核壳结构. In the two samples which have 核壳结构, the one with W/Ti=1:3 has less 碳化钨 than the one with W/Ti=1:1. On the other hand, 其(?)非整比活性相WC1-x的单位活性位数要多于WC. Combining these two effects, the 活性s of the two sample are very close. Considering economic factors, the best conduction for producing 核壳结构碳化钨/二氧化钛纳米复合材料 is the combination of a 钨源比W/Ti equals to 1:3 and a 反应时间 equals to 5 hours. |
4楼2011-04-24 03:12:41
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