کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5361574 1388274 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantum chemical molecular dynamical investigation of alkyl nitrite photo-dissociated on copper surfaces
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Quantum chemical molecular dynamical investigation of alkyl nitrite photo-dissociated on copper surfaces
چکیده انگلیسی
An accelerated quantum chemical molecular dynamical code “Colors-Excite” was used to investigate the photolysis of alkyl nitrites series, RONO (RCH3 and C(CH3)3) on copper surfaces. Our calculations showed that the photo-dissociated processes are associated with the alkyl substituents of RONO when adsorbed on copper surfaces. For RCH3, a two-step photolysis reaction occurred, yielding diverse intermediate products including RO radical, NO, and HNO, consistent with those reported in gas phase. While for RC(CH3)3, only one-step photolysis reaction occurred and gave intermediate products of RO radical and NO. Consequently, pure RO species were achieved to adsorb on metal surfaces by removing the NO species in photolysis reaction. The detailed photo-dissociated behaviors of RONO on copper surfaces with different alkyl substituents which are uncovered by the present simulation can be extended to explain the diverse dissociative mechanism experimentally observed. The quantum chemical molecular dynamical code “Colors-Excite” is proved to be highly applicable to the photo-dissociations on metal surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 21, 30 August 2008, Pages 6991-6999
نویسندگان
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