Recent developments in Ti-based nanocatalysts for electrochemical nitrate-to-ammonia conversion

Abstract

Recently, electrochemical NO3--to-NH3 conversion via nitrate reduction reaction (NO3-RR) has received much attention because it is regarded as an available option for sewage treatment and ammonia synthesis in mild conditions....

Electron-deficient Co modulated by the construction of heterojunctions Co@NC boosts the electroreduction of nitrate to ammonia

“…30,31 The electron donation-acceptance in the heterostructures modifies the distribution of electrons in the materials, which in turn modifies the electrochemical properties. [32][33][34] For example, Zheng et al designed Co nanoparticles anchored on the TiO 2 nanobelt array on a titanium plate (Co@TiO 2 /TP). The constructed Schottky heterostructures couple the semiconductor TiO 2 with metallic Co, and in turn generate a builtin electric field, which optimizes the metal electronic states and promotes the selective conversion of NO 3 − to NH 3 .…”

Molecular Terpyridine–Lanthanide Complexes Modified Carbon Nitride for Enhanced Photocatalytic CO2 Reduction

“…36−38 Recently, we reported terpyridine-based metal complexes for efficient photocatalytic CO 2 reduction. 7,17,24 Inspired by these previous studies, we became interested in the catalytic performances of REE-based complexes in photocatalytic CO 2 reduction, preparing and investigating hybrid catalysts based on lanthanide complexes and CN.…”

“…They can coordinate with many kinds of N -containing ligands, such as polypyridyl ligands. For example, lanthanide ions coordinate with terpyridine-based ligands to form multifunctional complexes, which have intriguing applications in gas storage, magnetism, and luminescence. − Recently, we reported terpyridine-based metal complexes for efficient photocatalytic CO 2 reduction. ,, Inspired by these previous studies, we became interested in the catalytic performances of REE-based complexes in photocatalytic CO 2 reduction, preparing and investigating hybrid catalysts based on lanthanide complexes and CN.…”

“…However, they have many drawbacks, as well. For example, despite its stability and resistance to photocorrosion, TiO 2 has a wide band gap and low photoquantum yield . Metal sulfides have tunable energy band structures and fast electron transfer, but they are not stable and prone to photocorrosion .…”

Effect of Sonication and Ceria Doping on Nanoparticles Fabricated by Laser Marker Ablation of Ti in Water

“…Therefore, TiO 2 NPs have found wide-ranging applications in hydrogen generation, solar cells, and photocatalyst to degrade organic pollutants [3][4][5][6][7]. Especially for electrochemical nitrate-to-ammonia conversion, Ti-based NPs have been widely acknowledged as the most promising catalysts [8].…”