Salvatore Danielle A, Dettelbach Kevan E, Hudkins Jesse R, Berlinguette Curtis P
Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T1Z3, Canada.
Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6H1Z1, Canada.
Sci Adv. 2015 Mar 6;1(2):e1400215. doi: 10.1126/sciadv.1400215. eCollection 2015 Mar.
Amorphous metal-based films lacking long-range atomic order have found utility in applications ranging from electronics applications to heterogeneous catalysis. Notwithstanding, there is a limited set of fabrication methods available for making amorphous films, particularly in the absence of a conducting substrate. We introduce herein a scalable preparative method for accessing oxidized and reduced phases of amorphous films that involves the efficient decomposition of molecular precursors, including simple metal salts, by exposure to near-infrared (NIR) radiation. The NIR-driven decomposition process provides sufficient localized heating to trigger the liberation of the ligand from solution-deposited precursors on substrates, but insufficient thermal energy to form crystalline phases. This method provides access to state-of-the-art electrocatalyst films, as demonstrated herein for the electrolysis of water, and extends the scope of usable substrates to include nonconducting and temperature-sensitive platforms.
缺乏长程原子有序性的非晶态金属基薄膜已在从电子应用到多相催化等一系列应用中得到应用。尽管如此，用于制备非晶态薄膜的制造方法有限，特别是在没有导电基底的情况下。我们在此介绍一种可扩展的制备方法，用于制备非晶态薄膜的氧化态和还原态，该方法涉及通过近红外（NIR）辐射有效地分解分子前驱体，包括简单的金属盐。近红外驱动的分解过程提供了足够的局部加热，以触发配体从基底上溶液沉积的前驱体中释放出来，但热能不足以形成晶相。如本文所示，该方法可用于制备最先进的水电解电催化剂薄膜，并将可用基底的范围扩展到包括非导电和温度敏感平台。
