02070nas a2200253   4500008004100000022001400041245011500055210006900170260000800239490000700247520117600254653003201430653002301462653002101485653003201506653002301538100001901561700002101580700001901601700002101620700003601641700001801677856012101695       2024                        eng d  a2199-692X00aEnhancing the Catalytic Activity of Pd Nanocrystals towards Suzuki Cross-Coupling by g-C3N4 Photosensitization0 aEnhancing the Catalytic Activity of Pd Nanocrystals towards Suzu  cJAN0 v103 a<p>Developing renewable means of activating molecules over traditional catalysts for C-C bond formation is desirable for industrial applications. Herein, we report a strategy to improve the efficiency of Pd nanoparticles (NPs) for the Suzuki cross-coupling reactions by visible-light irradiation using g-C3N4 nanosheets (NSs) as photosensitizer. Pd NPs mounted on g-C3N4 become electron-rich under visible-light due to generation of excited electrons in g-C3N4 and thereby accelerate the rate-determining step. Remarkable photocatalytic activity was accomplished utilizing Pd/g-C3N4 for the Suzuki cross-coupling reaction in environmentally benign aqueous settings under room temperature conditions. The activity remarkably improves (similar to 2.5 times) upon light irradiation, yielding one of the highest known turnover frequencies (TOF) of 1858 h(-1) and confirming the photosensitizer role of g-C3N4. The TOF for coupling of aryl bromides is also significantly high (similar to 356 h(-1)). We establish that the low-energy/long-lived excitons preferencially transfer to Pd, paving a way for rational designing photocatalysts for various C-C coupling reactions.</p>
10a2D graphitic carbon nitride10aC-C cross-coupling10aexciton transfer10aheterogeneous photocatalyst10aPhotosensitization1 aMondal, Sanjit1 aSahoo, Lipipuspa1 aBanoo, Maqsuma1 aVaishnav, Yuvraj1 aVinod, Chathakudath, Prabhakara1 aGautam, Ujjal  uhttps://library.ncl.res.in/content/enhancing-catalytic-activity-pd-nanocrystals-towards-suzuki-cross-coupling-g-c3n4