本研究利用CH3COOAg、Na2WO4•2H2O、CH3CSNH2三種化合物當做前驅物，以水熱法(Hydrothermal Method)製備AgxW(8-x)/6S4光觸媒。分別由相同組成比例，不同反應溫度下合成的光觸媒，及取得最好反應溫度之光觸媒後，再改變不同莫耳組成比例，製備出最好的AgxW(8-x)/6S4光觸媒。並使用含浸法負載共觸媒Ru以提高光觸媒活性及產氫效率。製備完成的光觸媒分別利用X光繞射分析儀(XRD)、紫外光-可見光光譜分析儀(UV-Vis)、能量散佈光譜儀(EDS)、場發式電子顯微鏡(FE-SEM)來進行光觸媒的結構和特性之分析。由XRD研究結果得知，在反應溫度160℃、莫耳組成比例X=2時AgxW(8-x)/6S4光觸媒有最佳的結晶性。同樣，由UV-Vis可得知反應溫度160℃下及組成比例X=2時Ag2WS4光觸媒有最好的臨界波長405nm和能隙值2.76eV。由FE-SEM圖結果顯示光觸媒表面結構以球形結構為主，反應溫度160℃下，光觸媒表面結構平滑且顆粒大小均勻；因此得知，改變溫度及改變光觸媒組成比例皆會對光觸媒表面結構與形態造成影響。最後，再由EDS鑑定分別得知光觸媒成份確為AgxW(8-x)/6S4。光觸媒水裂解產氫結果，反應溫度160℃及組成比例X=2時，有最佳的產氫量，當負載1wt% Ru共觸媒時產氫速率可達62μmole/g cat/h。

In this research, a series of photocatalyst AgxW(8-x)/6S4 was prepared through the hydrothermal method by mixing in different proportions of three chemical compounds: CH3COOAg, Na2WO4•2H2O, and CH3CSNH2 as precursors, and then the impregnation method is used to carry the cocatalysts Ru to enhance the activity of the photocatalyst and the efficiency of the hydrogen production rate. After the preparation, characterization of prepared photocatalysts was carried out including X-ray diffraction (XRD), UV - Visible spectrometer (UV-Vis), scanning electron microscope (SEM), and energy dispersed spectrometer (EDS). From the result of XRD, it is discovered that as the preparation temperature was 160℃and the proportions was X=2, the photocatalyst AgxW(8-x)/6S4 processes the best crystalline structure. From the result of UV-Vis, it is known as the preparation temperature is 160℃and proportions as X=2, maximum critical wavelength is about 450nm, with the energy gap of about 2.76eV. Furthermore, from the EDS identifications, it is known separately that the actual composition of the photocatalyst is confirmed to be AgxW(8-x)/6S4. Finally, from FE-SEM, it is known that the grain particles of photocatalyst were composing of the spherical structure, and with different preparation temperatures and proportions, the particle diameter sizes also change. From the experimental result, it is known that with the proportion of X=2, at the preparation temperature is 160℃, the photocatalyst AgxW(8-x)/6S4 processes the best reaction activity; and as it is carried with 1wt% co-catalyst of Ru, the hydrogen production rate can reach 62 μmol/g cat/h.

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