近日，我組研究生王肖同學(xué)在提高光催化劑光響應(yīng)性及界面電荷傳導(dǎo)特性方面取得突破進(jìn)展，并將成果發(fā)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(yán)峻。光催化技術(shù)被認(rèn)為是解決這一問題的有效手段。然而，光響應(yīng)性差及光激電子-空穴易復(fù)合是傳統(tǒng)光催化劑普遍存在的科學(xué)問題。本課題將具有良好光敏化效應(yīng)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(zhì)結(jié)（rGO-AgBr）的形成，光催化劑具有優(yōu)越的長波長光波吸收及響應(yīng)性，電子-空穴對復(fù)合被有效抑制，使其表現(xiàn)出顯著增強(qiáng)的光催化產(chǎn)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(dǎo)意義。
圖1 rGAA-α異質(zhì)結(jié)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(wěn)定性考察
圖4 催化劑光-電化學(xué)性能
圖5 催化劑催化產(chǎn)氫機(jī)理分析
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編輯：何書熬，審核：馬瓊