Versatile hyper-cross-linked polymer derived porous carbon nanotubes with tailored selectivity for oxygen reduction reaction

Qian, Qinping; Hu, Hongbo; Huang, Shaoda; Li, Yang; Lin, Liangliang; Duan, Fang; Han, Zhu; Du, Min; Lu, Shuanglong

doi:10.1016/j.carbon.2022.11.014

Cited by 11 publications

(7 citation statements)

References 37 publications

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“…The current study also demonstrates the advantages of HCPs in photo-and electro-responsiveness, but more in-depth studies still need to be pursued. [230][231][232][233] 5 Future outlooks Due to their unique advantages, HCPs show a wide range of potential applications in the fields of CO 2 storage, separation, and conversions. The green synthesis of HCPs is also becoming the current trend.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Song,

Tang,

Moon

et al. 2024

Green Chem.

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Section: Discussionmentioning

confidence: 99%

“…The current study also demonstrates the advantages of HCPs in photo- and electro-responsiveness, but more in-depth studies still need to be pursued. 230–233…”

Section: Discussionmentioning

confidence: 99%

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Song,

Tang,

Moon

et al. 2024

Green Chem.

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“…Molecular dynamics simulations indicated that the pyridinic-N species was a universal method employed to create the vacancy defects for catalyzing the ORR process ( Figure 10 d). Qian et al [ 98 ] developed a versatile platform to convert the sulfur-containing tubular polymer into diverse heteroatom doped porous carbon nanotubes through heat treatment. The evaporation of S, during the pyrolysis process under an ammonia atmosphere, creates numerous vacancy defects, which are demonstrated as active centers for the 4e − ORR.…”

Section: Electrocatalytic Active Sites Pinpointed From Popsmentioning

confidence: 99%

Molecular Design of Porous Organic Polymer-Derived Carbonaceous Electrocatalysts for Pinpointing Active Sites in Oxygen Reduction Reaction

et al. 2023

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The widespread application of fuel cells is hampered by the sluggish kinetics of the oxygen reduction reaction (ORR), which traditionally necessitates the use of high-cost platinum group metal catalysts. The indispensability of these metal catalysts stems from their ability to overcome kinetic barriers, but their high cost and scarcity necessitate alternative strategies. In this context, porous organic polymers (POPs), which are built up from the molecular level, are emerging as promising precursors to produce carbonaceous catalysts owning to their cost-effectiveness, high electrical conductivity, abundant active sites and extensive surface area accessibility. To enhance the intrinsic ORR activity and optimize the performance of these electrocatalysts, recognizing, designing, and increasing the density of active sites are identified as three crucial steps. These steps, which form the core of our review, serve to elucidate the link between the material structure design and ORR performance evaluation, thereby providing valuable insights for ongoing research in the field. Leveraging the precision of polymer skeletons based on molecular units, POP-derived carbonaceous catalysts provide an excellent platform for in-depth exploration of the role and working mechanism for the specific active site during the ORR process. In this review, the recent advances pertaining to the synthesis techniques and electrochemical functions of various types of active sites, pinpointed from POPs, are systematically summarized, including heteroatoms, surficial substituents and edge/defects. Notably, the structure–property relationship, between these active sites and ORR performance, are discussed and emphasized, which creates guidelines to shed light on the design of high-performance ORR electrocatalysts.

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“…HCPs are obtained by a one-step knitting process and have eaily tailored porosity and textural properties. They have been widely used for gas storage, heavy metal removal, separation, sensing, and electrocatalysis . Recently, Kang et al reported a low Pt containing N-doped carbon matrix derived from HCP as an electrocatalyst for the water splitting reaction .…”

Section: Introductionmentioning

confidence: 99%

“…The previous studies motivated our research toward a boron-enriched benzene boronic acid (BBA) based hyper-cross-linked polymer (Poly-BBA) for eN 2 RR. − However, these metal-free catalysts have not yet been explored much for eN 2 RR. The high surface area, tunable porosity, robust nature, and extended p-conjugation make them a potential candidate.…”

Section: Introductionmentioning

confidence: 99%

Boron-Enriched Benzene Boronic Acid Based Hyper-Cross-Linked Polymer for Selective Electrocatalytic N₂ Reduction to Ammonia

Balhara,

Sharma,

Sharma

et al. 2024

ACS Appl. Polym. Mater.

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The nitrogen (N 2 ) electro-reduction to ammonia (NH 3 ) at ambient conditions is considered a promising substitute for the Haber−Bosch (H−B) process. Considering the low Faradaic efficiency (FE) and slow reaction kinetics of the nitrogen reduction reaction (N 2 RR), it is important to design robust catalysts that can address the above-mentioned challenges. A boron-enriched hyper-cross-linked polymer (Poly-BBA) based on benzene boronic acid synthesized by a fast microwave-assisted approach has reportedly been used as metal-free electrocatalyst for efficient N 2 electro-reduction to NH 3 . The Poly-BBA was synthesized using microwave power of 400 W at 45 °C for 30 min and aging at 100 °C for 30 min. The successful synthesis of Poly-BBA was conducted by state-of-the-art analytical techniques. The N 2 sorption analysis demonstrates a hierarchical porous structure with a high SA BET of 1080 m 2 g −1 and a total pore volume of 0.7 cm 3 g −1 . The Poly-BBA shows selective reduction of N 2 to NH 3 with an FE of 21.9% in 0.05 M H 2 SO 4 solution at −0.5 V vs RHE. The presence of boron in the synthesized material resulted in the redistribution of electron density and provided electrondeficient sites for adsorption and activation of N 2 molecules.

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Versatile hyper-cross-linked polymer derived porous carbon nanotubes with tailored selectivity for oxygen reduction reaction

Cited by 11 publications

References 37 publications

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Molecular Design of Porous Organic Polymer-Derived Carbonaceous Electrocatalysts for Pinpointing Active Sites in Oxygen Reduction Reaction

Boron-Enriched Benzene Boronic Acid Based Hyper-Cross-Linked Polymer for Selective Electrocatalytic N₂ Reduction to Ammonia

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Versatile hyper-cross-linked polymer derived porous carbon nanotubes with tailored selectivity for oxygen reduction reaction

Cited by 11 publications

References 37 publications

Green synthesis of hypercrosslinked polymers for CO2 capture and conversion: recent advances, opportunities, and challenges

Green synthesis of hypercrosslinked polymers for CO2 capture and conversion: recent advances, opportunities, and challenges

Molecular Design of Porous Organic Polymer-Derived Carbonaceous Electrocatalysts for Pinpointing Active Sites in Oxygen Reduction Reaction

Boron-Enriched Benzene Boronic Acid Based Hyper-Cross-Linked Polymer for Selective Electrocatalytic N2 Reduction to Ammonia

Contact Info

Product

Resources

About

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Green synthesis of hypercrosslinked polymers for CO₂ capture and conversion: recent advances, opportunities, and challenges

Boron-Enriched Benzene Boronic Acid Based Hyper-Cross-Linked Polymer for Selective Electrocatalytic N₂ Reduction to Ammonia