2026-04-11 22:17:35
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據外國媒體報道:為了使現代燃料電池更便宜,更強大,由約翰·霍普金斯化學工程院領導的團隊從古埃及的傳統鍍金技術中汲取靈感。

在圖坦卡蒙國王時期,埃及藝術家經常用一層薄薄的閃閃發光的貴金屬(如黃金)來覆蓋便宜的金屬(如銅),以製造奢侈的麵具和珠寶。現在,約翰·霍普金斯大學領導的研究人員已經開發出了一種厚度僅為1納米(比人的頭發還要薄10萬倍)deangguibojinweixiaodetuceng,bingjiangqifugaizaigenglianjiadeguhexinshang。zhezhongweiguandejiehekenenghuichengweixinderanliaodianchideguanjiancuihuaji,weiqicheheqitajiqichanshengdianliu。
zhezhongxinxingranliaodianchideshejijiangdafujiangdiranliaodianchidechengben,yinweitaxuyaodebojinyaoshaodeduo,zheshiyizhongzaixianjinderanliaodianchidiandongqichezhongchangyongzuocuihuajidefeichangxiyouerangguidejinshu。yanjiurenyuanjinnianzaoxieshihouzaiNano Letters上發表了他們的研究成果,並宣稱通過使電動汽車更加實惠,這一創新可以遏製汽油或柴油車輛排放的二氧化碳和其他汙染物。
lunwendezhuyaozuozhe,yuehanhuopujinsiboshihouwangleibiaoshi,gudechuliangbiboduodeduo,tuanduiyijingnenggoutongguotufugulaixianzhetigaobojindeliyonglv,shenzhitongshishefatigaolebojindehuoxing。
guoquyanjiurenyuanchangshizaifeiguizhongcailiaoshangduguijinshu,hendachengdushangshoudaodianliutidaifanyingyinqidefeiguijinshuyanghuadezuai。zaizhexiangyanjiuzhong,yanjiuxiaozutongguoyinruyiyanghuatan(一種與鈷強烈結合的氣體分子,從而保護其免於氧化)成功地抑製了這種反應。
鈷鉑納米顆粒不僅減少了鉑的使用量,它們的活性還比僅使用鉑金催化劑的時候提高了10倍bei。研yan究jiu人ren員yuan表biao示shi,這zhe種zhong增zeng強qiang的de催cui化hua活huo性xing是shi由you於yu鉑bo原yuan子zi在zai表biao麵mian上shang的de暴bao露lu量liang最zui大da以yi及ji兩liang種zhong金jin屬shu之zhi間jian的de相xiang互hu作zuo用yong造zao成cheng的de。鈷gu和he鉑bo之zhi間jian的de密mi切qie接jie觸chu導dao致zhi了le壓ya縮suo應ying變bian。它ta縮suo短duan了le鉑bo原yuan子zi之zhi間jian的de距ju離li,使shi化hua學xue反fan應ying在zai表biao麵mian上shang更geng加jia可ke行xing
youyubojinheqitaxiyoujinshuzaixuduogongyeyingyongzhongqizheguanjiandezuoyong,zhexianggongzuodeyiyichaoyueleranliaodianchi。muqian,gaituanduizhengzainulishiqijishushiyingqitaguijinshuhefeiguizhongjizhi。xindefazhanjiangzhenduizhezhongcailiaozaitanqinghuahewuhuaxuezhuanhuazhongdejinyibuyingyong。