本研究以共沈澱法製備不同比例的鈦鋯雙成份觸媒，探討二氧化鋯添加於二氧化鈦中對其物性與化性的影響，而化學共沈澱法具有高均勻性，高反應性，以及精確的化學劑量比。首先將四氯化鈦與四氯化鋯分別以不同比例配置，與水混合成水溶液，加入氨水以調整pH值到9，使其充分混合攪拌後，即產生均勻的氫氧基配位前導化合物與氯化銨共沈物，再以蒸餾水洗去殘留的氯化物，經過過濾及100℃乾燥後，將乾燥後的粉末於300℃、500℃、700℃及900℃下鍛燒燒結5小時，升溫速率10℃/sec ，如此可得到不同比例下純淨的鈦鋯雙成份光觸媒，TiO2 之重量組成分別為 0、0.2、0.4、0.6、0.8和1.0。並利用Differential thermal analysis、Thermogravimetric analysis、X-ray diffraction、氮吸附和FT-IR等儀器作為粉體與燒結體之晶形性質分析。
實驗結果顯示鈦鋯雙成份的觸媒其表面積比純的二氧化鈦與純二氧化鋯觸媒高，在100℃時其表面積都隨鋯成份的增加而增加，300℃亦是，但500℃高溫鍛燒之後，鋯成份增加其表面積反而會下降。
由DTA圖發現各比例的鈦鋯觸媒在100℃左右都有一吸熱峰，這是因為粉體中水分的去除，由TGA熱重分析圖中發現所有樣品在180℃-400℃重量的損失，此係因銨離子被去除，DTA圖大約在600-650℃間另有一放熱峰，此係因晶相產生。
從XRD圖中發現，不管任何一種比例，當燒結到700℃之後，就形成完美的鈦鋯雙氧化物晶型，而且加入的鋯成分愈多愈會抑制鈦結晶生成。
以製備出的鈦鋯雙氧化物觸媒進行醋酸可見光催化反應測試，並以純二氧化鈦觸媒為對照，結果發現在相同環境條件下，鈦鋯雙氧化物的催化結果較純二氧化鈦觸媒來的佳。

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