Morphology Changes of Cu2O Catalysts During Nitrate Electroreduction to Ammonia
نویسندگان
چکیده
This manuscript reports the electrosynthesis of ammonia from nitrate catalysed Cu derived Cu2O materials. (111) and (100) preferential grain orientations were prepared through electrodeposition.. is more active selective for formation than Cu. The highest faradaic efficiency (FE) was achieved both catalysts at -0.3 V vs RHE, with reaching up to 80%. Additional measurements quasi-in situ X-ray photoelectron spectroscopy in Raman revealed that Cu0 phase during reaction. stability examined by ex methods such as SEM, XRD ICP elemental analysis. undergo severe morphological changes a function applied potential reaction time, most likely due dissolution redeposition After 3 hours reaction, entire surface reconstructed into nanoneedles. FE after remained higher (111), suggesting activity dependent on initial structure different rates re-deposition.
منابع مشابه
morphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials
ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...
15 صفحه اولThe beneficial effect of the addition of tungsten carbides to Pt catalysts on the oxygen electroreduction.
Tungsten carbide nanocrystal modified Pt catalysts have been prepared by an intermittent microwave heating (IMH) method and show an improved activity for oxygen electroreduction in alkaline media.
متن کاملCobalt-based Catalysts for Ammonia Decomposition
An effect of promoters such as calcium, aluminium, and potassium oxides and also addition of chromium and manganese on the structure of cobalt catalysts was examined. Studies of the catalytic ammonia decomposition over the cobalt catalysts are presented. The studies of the ammonia decomposition were carried out for various ammonia-hydrogen mixtures in which ammonia concentration varied in the r...
متن کاملPhysical and biogeochemical forcing of oxygen and nitrate changes during
Temporal changes in the water mass distribution and biogeochemical signals in the tropical eastern South Pacific are investigated with the help of an extended optimum multi-parameter (OMP) analysis, a technique for inverse modeling of mixing and biogeochemical processes through a multidimensional least-square fit. Two ship occupations of a meridional section along 8550 W from 14 S to 1 N are an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemcatchem
سال: 2023
ISSN: ['1867-3899', '1867-3880']
DOI: https://doi.org/10.1002/cctc.202201503