Schematic Comparison of Methanol Oxidation on Pure Ni vs DyNi3 Alloy

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SPECIMEN · N° 0434 1536 × 1024 gpt-image-2 auto Scientific mechanism schematic for anodic methanol oxidation reaction (MOR), landscape rectangular layout, clean flat...

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Schematic Comparison of Methanol Oxidation on Pure Ni vs DyNi3 Alloy

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模型

gpt-image-2

宽高比

auto

分辨率

1536 × 1024

生成日期

May 08, 2026

// 分类

gpt-image-2

      > Scientific mechanism schematic for anodic methanol oxidation reaction (MOR), landscape rectangular layout, clean flat professional style for top academic journal, exactly divided into two equal left-right comparison panels, same contrast structure as the provided reference example.

Left Panel (Pure Ni, Problem Side):

Label at bottom: Pure Ni
Catalyst surface: Uniform light golden ball model of Ni lattice
Core feature: Pure Ni has weak OH⁻ adsorption, only 1-2 scattered adsorbed OH (O red, H white) on the surface, mark with text: Weak OH adsorption
Reaction process: CH₃OH molecule (C gray, H white, O red) adsorbs on the surface. Lacking enough OH to attack intermediates, methanol undergoes continuous deep dehydrogenation, finally a large number of gray *CO toxic intermediates accumulate and occupy all active sites.
Bold red summary text: Weak OH adsorption → Deep dehydrogenation → Severe CO poisoning
Right Panel (DyNi₃ Alloy, Solution Side):

Label at bottom: DyNi₃ Alloy
Catalyst surface: Ni lattice (light golden balls), one Ni atom is replaced by a prominent cyan Dy atom, add a clear arrow from Dy to adjacent Ni labeled e⁻, explicitly show Dy donates electrons to Ni.
Core cause (highlighted): Dy electron donation significantly enhances OH⁻ adsorption, draw multiple pre-adsorbed OH (red O + white H balls) densely distributed on the whole surface, mark with bold text: Strong pre-adsorbed OH
Reaction process: CH₃OH adsorbs on the surface, early dehydrogenation intermediates are immediately attacked by dense pre-adsorbed OH, directly oxidized to HCOO* (formate) without further deep dehydrogenation, no CO intermediates generated at all, the final HCOO⁻ product smoothly desorbs and leaves the surface via an arrow.
Bold red summary text: Enhanced OH adsorption → OH-assisted oxidation → CO-free path, high activity & stability
Color scheme: Ni = light golden, Dy = cyan, O = red, C = gray, H = white. Background = off-white, lines are clean, contrast between left and right is sharp, no redundant decoration.
    

// Prompt 拆解 PLACARD · N° 01

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