Nanostructured and Boron-Doped Diamond as an Electrocatalyst for Nitrogen Fixation

Liu, Bin; Zheng, Yongping; Peng, Hui‐Qing; Ji, Bifa; Yang, Yang; Tang, Yongbing; Lee, Chun‐Sing; Zhang, Wenjun

doi:10.1021/acsenergylett.0c01317

Cited by 62 publications

(54 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…124 Strikingly, an NH 3 production rate of 19.1 mg h À1 cm À2 and FE as high as 21.2% were attained over boron-doped nanostructured diamond/ Ti electrodes in 0.05 M H 2 SO 4 solution containing 0.2 M Li 2 SO 4 . 125 Of interest is that the electrode retained stability for over 8 days without obvious decay in activity.…”

Section: Heterogeneous Catalysts For Nrrmentioning

confidence: 99%

“…36 However, the overpotential for HER may decrease with the increase of the boron content. 125 There exists an optimal boron content to improve the overall NRR efficiency and selectivity. The pyridinic N 3 configuration embedded in a graphitic layer, containing one protonated ll pyridinic nitrogen and one neighboring atomic vacancy site, was predicted to promote N 2 chemisorption and reduction with relatively lower free energy requirements.…”

Section: Surface Engineering Surface Modificationmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Shen

Choi

Masa

et al. 2021

Chem

325

205

View full text Add to dashboard Cite

Section: Heterogeneous Catalysts For Nrrmentioning

confidence: 99%

Section: Surface Engineering Surface Modificationmentioning

confidence: 99%

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Shen

Choi

Masa

et al. 2021

Chem

325

205

View full text Add to dashboard Cite

“…However, the design of an accurate mask is highly critical in this approach to the subsequent etching and deposition processes, which is complicated and of high cost. Additionally, Insitu formed hetero-particles, [26] as well as diamond nanoparticles, [27,28] were also utilized as masks to fabricate 1D nanostructures during the reactive ion etching of diamond films. The realization of such a structure was dependent on the conductivity of the film.…”

mentioning

confidence: 99%

Fabrication of Diamond Nanoneedle Arrays Containing High‐Brightness Silicon‐Vacancy Centers

Yang

et al. 2021

Advanced Optical Materials

View full text Add to dashboard Cite

To date, researchers have confirmed the presence of more than 500 color centers. [8] Among them, the silicon-vacancy (SiV) color center exhibits an optical emission with a zero-photo line (ZPL) centered at 738 nm along with a narrow peak width at room temperature, which concentrates more than 70% of its signals. [9,10] This means that SiV centers have excellent performance in the areas of bio-labeling and nanothermometry. Generally, these applications demand high concentration or photoluminescence (PL) intensity. An efficient way of meeting this requirement is to dope sufficient Si atoms or SiV centers in diamonds, utilizing a silicon-containing gas precursor. [11,12] However, due to the large refractive index (about 2.4) of diamonds as well as the formation of sp 2 amorphous carbon or graphite phase, efficient PL extraction of color centers in polycrystalline diamond films remains a challenge. [13][14][15][16] Numerous approaches have been proposed to improve the PL emission of color centers. Of these, the etching of sp 2 carbon species to optimize crystalline quality has been confirmed to remarkably increase PL attributes in nanocrystalline diamonds. [15] Another approach to optimizing the PL emission of color centers in nanocrystalline diamond is to alter the surface termination from hydrogen to oxygen. [17][18][19][20][21] In comparison, these two methods have a negligible effect on increasing the PL of monocrystalline/polycrystalline diamonds. Other approaches, such as coupling color centers with photonic crystals [22][23][24] or micro/nano structures, [14,25] have been demonstrated to be viable for increasing the optical collection efficiency of microsized diamonds. For example, Ondic et al. [23] prepared 2D polycrystalline diamond photonic crystal slabs using a bottom-up approach, tuning the leaky modes to increase the PL intensity of SiV centers by 14 fold. However, the design of an accurate mask is highly critical in this approach to the subsequent etching and deposition processes, which is complicated and of high cost. Additionally, Insitu formed hetero-particles, [26] as well as diamond nanoparticles, [27,28] were also utilized as masks to fabricate 1D nanostructures during the reactive ion etching of diamond films. The realization of such a structure was dependent on the conductivity of the film. [27] Recently, it was reported that by annealing diamond particles in the air, a nanopyramid or irregular nanoporous structure was formed on their surface, resulting in aThe optically active silicon-vacancy (SiV) center in diamonds is an excellent candidate for quantum photonics and sensing applications. To date, optimizing the photoluminescence (PL) collection efficiency of SiV centers has proven difficult. To address this issue, the current study presents a simple two-step method for preparing single-crystalline diamond nanoneedle arrays. In the first step, silicon-doped (001) textured diamond films are deposited with a mixture of microcrystalline and nanocrystalline grains in a microwave plasma CVD (MPCVD)...

show abstract

“…To date, various strategies have been developed to design nanomaterials for further improving the NRR performance, including heteroatom dopants, [ 33–35 ] interface engineering, [ 36 ] alloys, [ 37,38 ] facet engineering, [ 39,40 ] defects, [ 41–43 ] and the size effect [ 44–49 ] coupled with an optimized electrochemical reaction system. However, because the competing hydrogen evolution reaction (HER) and the by‐product N 2 H 4 formation, there is still a big gap facing N 2 fixation before it can move into future practical application, such as low FE and low yield rate.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances and Perspective on Electrochemical Ammonia Synthesis under Ambient Conditions

Zhang

Mei

et al. 2021

Small Methods

View full text Add to dashboard Cite

Ammonia is an essential chemical for agriculture and industry. To date, NH3 is mainly supplied by the traditional Haber–Bosch process, which is operated under high‐temperature and high‐pressure in a centralized way. To achieve ammonia production in an environmentally benign way, electrochemical NH3 synthesis under ambient conditions has become the frontier of energy and chemical conversion schemes, as it can be powered by renewable energy and operates in a decentralized way. The recent progress on developing different strategies for NH3 production, including 1) classic NH3 synthesis pathways over nanomaterials; 2) the Mars‐van Krevelen (MvK) mechanism over metal nitrides (MNx); 3) reducing the nitrate into NH3 over Cu‐based nanomaterial; and 4) metal–N2 battery release of NH3 from LixM. Moreover, the most recent advances in engineering strategies for developing highly active materials and the design of the reaction systems for NH3 synthesis are covered.

show abstract

Nanostructured and Boron-Doped Diamond as an Electrocatalyst for Nitrogen Fixation

Cited by 62 publications

References 41 publications

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Fabrication of Diamond Nanoneedle Arrays Containing High‐Brightness Silicon‐Vacancy Centers

Recent Advances and Perspective on Electrochemical Ammonia Synthesis under Ambient Conditions

Contact Info

Product

Resources

About