AI 化学图表：反应机理、电催化与分子结构插图

Figure 1: Concept of kinetic compression
in redox-mediated paired electrosynthesis.
Schematic representation of an alkaline membrane electrode assembly
integrating HMF oxidation and nitrate reduction.
Show anode (HMF → FDCA), cathode (NO₃⁻ → NH₃),
anion exchange membrane separating compartments,
electron flow in external circuit,
mediator redox cycling at each electrode.
Nature Chemistry style, clean vector illustration.

GS-TCOP material assembled into a symmetric supercapacitor
using a KI-mixed H₂SO₄ redox electrolyte.
Show both electrodes with GS-TCOP coating,
separator membrane in center,
electrolyte ions (K⁺, I⁻, H⁺, SO₄²⁻) migrating,
charge storage mechanism at electrode-electrolyte interface,
Faradaic and non-Faradaic contributions labeled.
Electrochemistry journal style, cross-sectional view.

Schematic diagram for research project proposal.
Theme: construction of a cathode for electrocatalytic
carbon-nitrogen coupling of nitrite and carbon dioxide
to synthesize urea.
Show cathode material design, CO₂ and NO₂⁻ adsorption sites,
C-N bond formation at active sites,
urea product desorption,
Faradaic efficiency metrics.
Academic paper style for electrochemistry journal.

Unified Free Energy Profiles (ΔG coordinate graph).
Path 1 (Pure h-BN): Very high initial activation barrier,
Path 2 (Doped catalyst): Lower barriers at each step,
X-axis: reaction progress with labeled intermediates,
Y-axis: free energy (kcal/mol),
Transition states as peaks labeled TS1, TS2, TS3,
Activation energy Ea and ΔG° values annotated.
Clean scientific diagram, physical chemistry style,
suitable for addressing reviewer requests for activation barriers.

Color scientific illustration of Pauling's
approximate atomic orbital energy level diagram.
White background for clarity.
Clearly differentiate energy levels for
1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p orbitals.
Show electron filling order with arrows,
Madelung rule diagonal lines,
orbital degeneracy indicated by spacing.
General chemistry textbook style.

Expanded structure of 2-methylbutane,
carbon atoms clearly highlighted and differentiated:
CH₃ (1°) | CH₃ (1°) - CH (3°) - CH₂ (2°) - CH₃ (1°).
Each carbon type color-coded:
primary (blue), secondary (green), tertiary (red).
Bond angles and hybridization labeled.
Organic chemistry textbook illustration style.

Generate image based on the following design concept:
Core Design Idea: α-CD + dynamic covalent amphiphiles,
emphasize the synergistic relationship
between cyclodextrin inclusion and dynamic covalent bonding.
Show host cavity encapsulating guest molecule,
reversible covalent bond formation at periphery,
self-assembly into vesicular structures.
Supramolecular chemistry journal style.

Chemical structure of lignin and the photo-electron transfer
mechanism during photocatalysis of titanium dioxide (TiO₂).
Show TiO₂ band structure (valence band, conduction band),
UV light excitation generating electron-hole pairs,
electron transfer to lignin degradation products,
reactive oxygen species (ROS) generation pathway.
Physical chemistry / green chemistry journal style.

Extraction of Water-Soluble Total Polysaccharides workflow.
Fenugreek seeds pulverized and passed through 40-mesh sieve.
Steps: defatting with petroleum ether →
hot water extraction at 90°C →
ethanol precipitation (4:1 ratio) →
dialysis and lyophilization →
characterization (FTIR, NMR, SEC-MALLS).
Sequential flowchart with icons at each step.
Analytical chemistry methods section style.