氫氣是目前極具潛力的綠色能源新選擇，完全燃燒後的產物為水，釋放到環境中不造成污染。甲醇為一高能量密度之液態燃料，可利用生物質(biomass)轉化合成，甲醇具價格低廉、用途廣泛及容易運輸之優點，為最好的產氫來源之一。甲醇可藉由蒸氣重組反應(SRM)、降解反應(DM)、氧化性重組反應(OSRM)與部分氧化反應(POM)轉換成氫氣。
本研究以發展新型奈米反應器(nanoreactor)為主，成為一種新產氫技術。以醣化合物(例如：澱粉)螯合廢水中之銅離子形成Cu2+-CD錯合物，碳化後生成可調粒徑之奈米Cu@C核殼(core-shell)物質，其奈米粒徑可調範圍為7~40 nm，利用酸萃取進一步將Cu@C內部之金屬銅析出，生成可調粒徑、可調活性奈米反應器(nanoreactor)：Cu-ZnO@C與Cu-ZnO○yC，應用於催化POM與DM反應，以達到在較低溫度催化甲醇轉化生成氫氣。
實驗結果顯示Cu在低溫(<523 K)可催化POM或DM生成氫氣；ZnO則有助於增加Cu分散性、穩定性及觸媒活性。在侷限的Cu-ZnO@C或Cu-ZnO○yC
奈米反應中，可以大幅提升反應物與Cu-ZnO碰撞頻率，增加低溫反應速率與H2產率。
另外，利用同步輻射光源探討奈米反應器生成與反應機制，由in situ小角度X光散射儀(SAXS)分析，發現在溫度433 K，Cu-ZnO@C 奈米顆粒初生成。XRD顯示奈米反應器中主要之物種為Cu與ZnO，TEM分析結果顯示Cu-ZnO@C奈米反應器之粒徑大小為3-20 nm，與XRD、SAXS分析結果穩合。
在473-573 K，Cu-ZnO@C奈米反應器之銅金屬活性基可催化POM生成氫氣，由XANES及EXAFS光譜分析發現，在POM反應後，少量Cu被氧化成Cu(I)。值得注意的是，當ZnO量增加，Cu量減少，氫氣產量隨之增加；ZnO似乎具有提升POM產氫效率之能力。蛋殼(yolk-shell)奈米反應器比核殼奈米反應器在侷限空間內更能增加碰撞機率，使POM反應活化能降低，因此可降低反應溫度、提高產氫量。

Methanol which has been considered as high density liquid fuels can be synthesized from biomass. H2 can be obtained via partial oxidation of methanol (POM) and decomposition of methanol (DM) at the temperature range of 473-673 K. To have a better energy efficiency, feasibility of the catalytic POM and DM reactions in core- and yolk-shell nanoreactors have been investigated in the present work. In separated experiments, we found that nanosized copper present in chemical-mechanical-polishing wastewater can be recovered by chelating with β-cyclodextrin (CD). Metallic copper (Cu) encapsulated in the carbon shell with the size ranged from 7 to 40 nm as the CD-Cu2+ complex was carbonized at the temperature of 573 K. In the present work, the core metals were etched from the Cu@C or Cu-ZnO@C. Experimentally, POM and DM catalyzed by the Cu-ZnO@C or Cu-ZnO○yC nanoreactors at a relatively low temperature was found. In addition, the collision frequency of CH3OH and O2 in the confined nanoreactors can be highly increased, and effectively proceed for a high yield of H2.
Formation of the Cu-ZnO@C nanoreactors was observed by in situ small angle X-ray scattering (SAXS) during temperature-programmed carbonization at the temperature range of 323-523 K. It seems that the threshold temperature for the growth of the Cu-ZnO nanoparticles was 433 K approximately. Nanosize Cu and ZnO in the Cu-ZnO@C are observed by XRD. By TEM images, the crystalline sizes of Cu are 3-20 nm which are similar to the observations by in situ SAXS and XRD. After partially etching of Cu from Cu-ZnO@C, CuO or Cu2O is not found in the Cu-ZnO○yC nanoreactors. During the catalytic POM effected by the Cu-ZnO@C nanoreactors, a small amount of Cu has been oxidized to higher oxidation states.
At 473-573 K, the activity of the nanoreactors is increased with an increase of the fraction of ZnO. The yolk-shell nanoreactors have a better activity for DM than the core-shell one due to the fact of increasing collision frequency in the confined nanoreactors.

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