2D graphdiyne loading ruthenium atoms for high efficiency water splitting

Atomic-Level Functionalized Graphdiyne for Electrocatalysis Applications

“…The isolated and uniform bright points in the Figure 3b-d confirm the successful anchoring of Mo atoms and also display the local coordination environment of Mo atoms in the sample, providing evidences for possible anchor configurations of Mo metal atoms. By a facile and effective in-situ wet-chemical reduction strategy, ruthenium (Ru) atom was easily anchored on the GDY grown on a 3D carbon fiber network, and the self-supporting 3D flexible GDY-supported Ru atom catalyst (Ru/GDY) with the 1.0 wt% loading of Ru atom was prepared [64]. The Ru/GDY sample has a well-defined 3D layered structure ( Figure 3e) and the presence of Ru atoms can be observed (Figure 3f,g).…”

“…To date, the development of dual-function electrocatalysts capable of driving both HER and OER processes with a small applied voltage can better meet the requirements in practical applications but remains challenges. Inspired by the fact that ruthenium (Ru) supported oxides are generally considered to be effective electrocatalysts for acidic OER and the fact that GDY can be applied as an efficient and stable catalyst support for anchoring metal atoms, Ru atom anchored GDY (Ru/GDY) catalyst has been prepared by the in-situ reduction method and shows outstanding catalytic activity and stability in both OER and HER processes in acid solution [64]. The Ru/GDY shows the excellent OER activity with the low overpotential of 531 mV to reach 10 mA cm −2 and the small Tafel slope of 100 mV dec −1 and the big j mass of 9.03 A mg metal −1 (at the 2.0 V), which is 451 times larger than RuO2 (0.02 A mg metal −1 ).…”

“…Copyright Wiley-VCH, 2018); (b-d) different configurations of the individual Mo-atoms anchored on the GDY structure (reproduced with permission from [63]. Copyright American Chemical Society, 2018); (e) scanning electron microscopy (SEM), (f) High-resolution transmission electron microscopy (HRTEM) and (g) HAADF images of Ru/GDY; (h) Experimental and fitted EXAFS spectra of Ru/GDY and Ru foil (reproduced with permission from[64]. Copyright Elsevier, 2020).…”

Designing the future atomic electrocatalyst for efficient energy systems

“…The excellent properties of graphdiyne have led to a number of high performance HER SACs. 15,94,95 The HER SACs have developed into more complex designs. For instance, metal clusters are imported to the SACs without changing the original isolated dispersion of metal atoms.…”

“…SACs inherit the merits of both heterogeneous and homogeneous catalysts and are regarded as the bridge connecting the gap between heterogeneous and homogeneous catalysis. 5 The SAC usually possesses distinct and outstanding performance in many electrochemical reactions, for example, oxygen reduction reaction (ORR), [6][7][8][9][10][11] oxygen evolution reaction (OER), [12][13][14][15][16] hydrogen evolution reaction (HER), [17][18][19][20] nitrogen reduction reaction (NRR), [21][22][23][24][25][26][27][28] and carbon dioxide reduction. 29 The excellent activity of SACs generally stems from the unique single-atom motifs as active sites on the surface.…”