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| 本论文利用新型材料八氨丙基倍半硅氧烷，采用水相还原法制备PtCo/POSS，通过高分辨率透射电镜（HR-TEM）、扫描电子显微镜（SEM）对催化剂的微观结构及形貌进行表征，并对其进行甲酸电催化氧化性能的测试。结果表明利用POSS载体可得到粒径较小的催化剂颗粒。在所制催化剂中Pt0.75Co0.25/POSS展现出最好的活性。掺杂适量的Co金属，会增强Pt对甲酸电催化性能，减少COad有毒中间体的吸附，降低CO的氧化电位。 |
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bhcsu
金虫 (小有名气)
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
蓝色夭姬: 金币+30, ★★★很有帮助 2013-05-23 08:35:42
蓝色夭姬: 金币+30, ★★★很有帮助 2013-05-23 08:35:42
| Employing aqueous phase reduction method, PtCo/POSS was prepared using a novel material octaaminopropyl polyhedral oligomeric silsesquioxane with chloroplatinic acid and cobalt dichloride as metal sources. Different catalysts were obtained by changing the ratio of Pt and Co. The microstructure and morphology of the catalyst were characterized by means of High Resolution Transmission Electron Microscropy (HR-TEM) and Scanning Electron Microscopy (SEM). Moreover, a test for its electro-catalysis and oxidation properties was conducted in methane acid. Results show that finer and better dispersed catalyst particles could be obtained using POSS carrier. Pt0.75Co0.25/POSS, of all the prepared catalysts, demonstrates the best activity by comparison. Doping a certain amount of Co could improve the property of electro-catalysing methane acid of Pt and decrease the absorption of toxic intermediate CO and the oxidation potential of CO. |
6楼2013-05-22 11:43:56
bhcsu
金虫 (小有名气)
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
蓝色夭姬: 金币+30, 翻译EPI+1, ★★★很有帮助 2013-05-21 14:06:11
蓝色夭姬: 金币+30, 翻译EPI+1, ★★★很有帮助 2013-05-21 14:06:11
| Employing aqueous phase reduction method, PtCo/POSS was prepared with a novel material octaaminopropyl polyhedral oligomeric silsesquioxane. The microstructure and morphology of the catalyst were characterized by means of High Resolution Transmission Electroinc Microscropy (HR-TEM) and Scanning Electronic Microscopy (SEM). Moreover, a test for its electro-catalysis and oxidation properties was conducted in methane acid. Results show that finer catalyst particles could be obtained using POSS carrier. Of all the catalysts, Pt0.75Co0.25/POSS demonstrates the best activity. Doping a certain amount of Co will improve the property of electro-catalysing methane acid of Pt and decrease the absorption of toxic intermediate CO and the oxidation potential of CO. |
2楼2013-05-20 22:10:56
青蜂侠
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★ ★ ★ ★ ★
Rio2016: 金币-5, 这一条回复有明显机器翻译嫌疑、最近版内机器翻译相当严重、请注意自己行为。 2013-05-23 10:09:54
Rio2016: 违规存档 2013-05-23 10:11:59
Rio2016: 金币-5, 这一条回复有明显机器翻译嫌疑、最近版内机器翻译相当严重、请注意自己行为。 2013-05-23 10:09:54
Rio2016: 违规存档 2013-05-23 10:11:59
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PtCo/ POSS采用水相还原法，制备了一种新型的材料octaaminopropyl多面体低聚倍半硅氧烷。催化剂的结构和形貌特征通过高分辨透射美电子Microscropy（HR TEM）和扫描电子显微镜（SEM）。此外，甲烷酸的电催化氧化性能进行了测试。研究结果表明，可以得到更好的催化剂颗粒使用POSS载体的。所有的催化剂，Pt0.75Co0.25/POSS演示的最佳活动。一定量的Co掺杂提高属性电催化作用的甲烷的酸的Pt和降低毒性中间体CO的吸收的CO的氧化电位 能力有现，不知对你是否有帮助，如有问题，不宁赐教！！！  |
3楼2013-05-21 16:12:24
青蜂侠
捐助贵宾 (正式写手)
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【答案】应助回帖
蓝色夭姬: 金币+20, ★★★很有帮助 2013-05-22 09:06:55
Rio2016: 金币-20, 机器翻译嫌疑、请注意自己行为、本版严打机器翻译 2013-05-23 10:11:19
Rio2016: 金币-20, 机器翻译嫌疑、请注意自己行为、本版严打机器翻译 2013-05-23 10:11:19
|
In this thesis, new materials eight aminopropyl silsesquioxane, the use of water to restore the prepared PtCo / POSS by high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM) microscopic structure and shape of the catalystappearance was characterized, and its formic acid electrooxidation performance of the test. The results showed that the smaller particle size of the catalyst particles can be obtained using POSS carrier. In the prepared catalyst Pt0.75Co0.25/POSS showing the best activity. Doped with Co metal will enhance the performance of Pt towards formic acid electrooxidation, reduction of COad toxic intermediates adsorption, reduce the CO oxidation potential. 能力有现，不知对你是否有帮助，如有问题，不宁赐教！！！ |
4楼2013-05-21 16:14:28
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