近日，我組研究生王肖同學在提高光催化劑光響應性及界面電荷傳導特性方面取得突破進展，并將成果發表于國際SCI期刊“International
Journal of Energy Research”。
題目：High photoresponse and fast carrier mobility: Two-dimensional rGO-AgBr/Ag composite based on Z-scheme heterointerface with plasma for hydrogen evolution.
作者：Xiao Wang，Wei Li*，Shu-ao He，Qiong Ma，Bingchang Yan，Nan Meng，Lifen Hao
全文鏈接： https://onlinelibrary.wiley.com/doi/abs/10.1002/er.4908
簡介：隨著人們生活水平的提高，能源緊缺問題日益嚴峻。光催化技術被認為是解決這一問題的有效手段。然而，光響應性差及光激電子-空穴易復合是傳統光催化劑普遍存在的科學問題。本課題將具有良好光敏化效應的AgBr錨定于還原氧化石墨烯（rGO）表面，通過一鍋溶劑熱法合成了一種二維rGO-AgBr/Ag光催化劑。由于Z型異質結（rGO-AgBr）的形成，光催化劑具有優越的長波長光波吸收及響應性，電子-空穴對復合被有效抑制，使其表現出顯著增強的光催化產氫活性（72.71μmol h-1g-1）。本研究對于合成二維石墨烯基光催化劑具有理論指導意義。
圖1 rGAA-α異質結光催化劑合成過程的示意圖
圖2 rGAA-2的TEM電鏡照片(a-b)、EDX元素映射(c-f)和EDX光譜(g)
圖3 催化劑催化性能及穩定性考察
圖4 催化劑光-電化學性能
圖5 催化劑催化產氫機理分析
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編輯：何書熬，審核：馬瓊