1：Experimental Design and Method Selection:

The study employed a one-step microwave-assisted carbonization of glucose in the presence of ammonia and H2O2 to synthesize AGQDs. A composite of AGQDs and TiO2 was prepared for photocatalytic testing.

2：Sample Selection and Data Sources:

Glucose, ammonia, and H2O2 were used as precursors for AGQDs synthesis. Methylene blue (MB) was used as a model dye for photocatalytic degradation studies.

3：List of Experimental Equipment and Materials:

Microwave oven (Preekem Scientific Instrument Co. Ltd.), transmission electron microscopy (TEM, JEOL, JEM-2100F), atomic force microscopy (AFM; Veeco, Dimension 3100), X-ray photoelectron spectroscopy (XPS; Thermo Fisher), UV-vis spectrophotometer (Specord 210), Raman spectrometer (DXR Raman spectrometer, Thermo Scientific), FT-IR spectrometer (Nicolet IR 200, Thermo Scientific), fluorescence spectrophotometer (Cary Eclipse).

4：Experimental Procedures and Operational Workflow:

AGQDs were synthesized by microwave treatment of glucose, ammonia, and H2O2, followed by dialysis. The AGQDs-TiO2 composite was prepared by sonication and stirring. Photocatalytic activity was assessed by MB degradation under visible light.

5：Data Analysis Methods:

The photocatalytic efficiency was evaluated by measuring the absorbance of MB at 660 nm. The structure and properties of AGQDs were characterized by TEM, AFM, XPS, UV-vis, Raman, FT-IR, and fluorescence spectroscopy.