Pe300bfm

The optical images were monitored with an Olympus BX53M microscope in bright-field mode, equipped with a homemade temperature/magnetic dual-controlled microscope stage. Field emission SEM and elemental analysis were performed on a JEOL FEG JSM-7001F microscope equipped with an Oxford/INCA EDS. Transmission electron microscopy (TEM) images were obtained using a JEOL JEM-2010F microscope. Fourier transform infrared spectroscopy spectrum was collected on a Shimadzu IR Prestige-21 spectrophotometer. Ultraviolet-visible (UV-vis) absorption spectra were recorded on a Shimadzu UV-3600 UV-vis near-infrared spectrophotometer. X-ray diffraction was carried out on a Bruker D4 X-ray diffractometer. AFM images were collected on a commercial scanning probe microscope (SPM) instrument (MFP-3D, Asylum Research, CA, USA). The temperature and open-circuit voltage of I₃⁻-SMARS were recorded on a nanovoltmeter (Keithley 2182A). The infrared camera was used to capture infrared image and surface temperature. Simulated sunlight with a radiation intensity of 5 kW m⁻² was provided by a 300-W Xenon lamp (Excelitas, PE300BFM).

The visible‐light‐driven H₂ evolution experiments were performed at room temperature. Pure CdSe quantum dots or [Fe₃Te₂(CO)₉] catalyst or CdSe quantum dot/[Fe₃Te₂(CO)₉] assembly were added, together with the sacrificial electron donor ascorbic acid (H₂A), into a water or water/acetonitrile mixture (10 mL, 7:3 v/v) in a homemade photocatalysis reactor. Generally, the reaction was carried out under irradiation by a 300 W xenon lamp (Excelitas Technologies, PE300BFM). Bubbles emerging from the solution could be directly observed soon after turning on the light. The generation of H₂ was monitored by gas chromatography by using a molecular sieve column (5 Å), thermal conductivity detector, and argon carrier gas.