The Role of Nonequilibrium Solvent Effects in Enhancing Direct CO2 Capture at the Air–Aqueous Amino Acid Interface DOI
Nitesh Kumar, Vyacheslav S. Bryantsev, Santanu Roy

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 23, 2024

Direct air capture (DAC) technologies are limited by the poor understanding of dynamic role interfaces in modulating chemisorption CO2 from into solutions. While reactivity aqueous amine-based solvents bulk environment is strongly inhibited nonequilibrium solvent effects, promoting DAC at posits a possibility to reduce coupling with and significantly accelerate DAC. Building on an experimentally proven concept bring anionic glycine absorbent interface through ion-pairing interactions positively charged surfactant, we establish fundamental time scales for key elementary steps involved rate theory enhanced-sampling ab initio molecular dynamics simulations. We elucidate mechanism which water influences free energy barriers dynamical crossing-recrossing those barriers, affecting reaction rates. find that reorganizes partially dehydrate [-NH2], facilitating SN2-based conversion zwitterion, then releases proton via overhydration [-NH2]. The low-density interfacial favors dehydration over overhydration, leading comparatively higher barrier (slower kinetics) release. barrier-recrossing events neutralize this effect, letting both occur same scale (sub-microseconds) making overall process faster than water. Such environment-sensitive effects kinetics will help design tailored enhanced control solvation ion paring.

Language: Английский

CO2 Capture via Electrochemical pH-Mediated Systems DOI Creative Commons
Adnan Ozden

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1550 - 1576

Published: March 10, 2025

Language: Английский

Citations

1
Innovative strategies in chloroplast engineering for sustainable CO2 and CH4 mitigation DOI Creative Commons
Z. Du, Jingzhen Wang, Lu Lin

et al.

Advanced Composites and Hybrid Materials, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 17, 2025

The escalating greenhouse gas emissions drive climate change, posing significant threats to global ecosystems and human societies. This article presents the molecular mechanisms functions of chloroplasts, emphasizing their pivotal role in mitigating enhancing photosynthetic efficiency. A comprehensive examination biochemical processes occurring within pigment function, regulation challenging environmental conditions is provided. In particular, research explores potential carboxysomes with minimal genetic footprints for C3 chloroplast transformation, highlighting promise improving efficiency plants. Various strategies regulating CO2 CH4 are explored. It was found that innovative biological fixation capture methodologies have reduce atmospheric levels significantly. encompasses afforestation/reforestation (AR) as well methane conversion natural engineered systems. involves optimization absorption through physiological restructuring chloroplast, showcasing enhancements crop yields. Additionally, study design implementation artificial focusing on efficacy light reactions water splitting electron transfer processes. Overall, this review contributes expanding knowledge photosynthesis optimization. By integrating insights from biology, synthetic science, approaches tackling challenges proposed, implications sustainable energy production, agricultural productivity, stewardship.

Language: Английский

Citations

0
Tandem direct carbonate electrolysis with syngas fermentation for multicarbon chemicals production DOI
Xue Zheng, Song Wang, Xiaoming Huang

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 105, P. 1040 - 1046

Published: Jan. 31, 2025

Language: Английский

Citations

0
Direct Electroreduction of Low-Concentration CO2: Progress and Perspective DOI
Jingjing Li, Qin Xiang Xia, Xiaoran Wang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

The conversion of CO2 into carbon-based fuels and chemicals via the electrocatalytic reduction reaction (CO2RR) offers an attractive route to reducing emission for carbon neutrality. Currently, high-purity gas has been widely used as feedstock most CO2RR studies, while sources with a typically low concentration impose extra cost capture purification steps. direct utilization low-concentration is promising approach substantially address this problem. In Perspective, we first highlight prominent advantages electroreduction CO2. Then focus on summary several important design strategies in diluted impurities-containing atmosphere. Finally, propose personal outlooks future challenges some opportunities fascinating research field.

Language: Английский

Citations

0
Development of electrolysis systems for ambient temperature CO2 reduction DOI
Fuzhi Li,

Hai‐Gang Qin,

Jun Gu

et al.

EnergyChem, Journal Year: 2025, Volume and Issue: unknown, P. 100156 - 100156

Published: April 1, 2025

Language: Английский

Citations

0
Cation effect on dual-function amine-based electrolytes for CO2 capture and electroreduction DOI
Qiang Li, Yuhang Ding,

Teng Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162594 - 162594

Published: April 1, 2025

Language: Английский

Citations

0
Covalently Modified Electrode with Bismuth Nanoparticles Encapsulated in Ultrathin Porous Organic Polymer Linked by Amine Bonding for Efficient CO2 Electroreduction DOI
Li Cui, Yan Wang, Changjiang Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Bismuth-based materials in electrocatalytic CO2 reduction (CO2RR) usually face the problem of high overpotential. We first show a covalently modified electrode with Bi nanoparticles encapsulated ultrathin porous organic polymer nanosheets (POPs) amine linkages to effectively reduce overpotential for CO2-to-formate conversion, which exhibits formate Faradaic efficiency (FEHCOO-) 98.5% and partial current density up 148.7 mA cm-2 at -0.85 V comparison that bare bismuth FEHCOO- 85% -1.15 (versus reversible hydrogen electrode). Different from reaction mechanism *CO2•- radicals as intermediate over sites, situ spectroscopic studies functional theory calculations reveal abundant POPs backbone provide chemisorption sites interact enriched molecules form carbamates (*[-NCOO-]) intermediates low barrier 0.064 eV, significantly reduces free energy conversion process formate. Moreover, promote water dissociation subsequent protonation on surface reduced -0.31 eV than 0.11 eV. This work not only delivers new but also offers clean platform investigate influence modification.

Language: Английский

Citations

0
Challenges in Product Selectivity for Electrocatalytic Reduction of Amine-Captured CO2: Implications for Reactive Carbon Capture DOI Creative Commons

Aneelman Brar,

Xinran S. Wang,

C. N. Gillis

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

CO2 is a potential feedstock for carbon-based fuels or materials, but only available in dilute streams. Integrated processes capture and conversion directly valorize the captured by sorbent skipping energetically expensive regeneration step. Amines are most heavily studied liquid-phase materials from react with 2:1 ratio to form corresponding ammonium carbamate. Ammonium carbamate [NH4]-[H2NCO2] was tested as substrate using highly selective robust CO2-to-formate reduction electrocatalyst [(tBuPOCOP)-Ir-(H)-(NCCH3)2], where (tBuPOCOP) tridentate pincer ligand 2,6-bis-(ditert-butyl-phosphonito). When used instead of CO2, hydrogen produced. An equivalent electrolysis hexafluorophosphate also resulted primarily hydrogen. Methyl urea were substrates proxies that do not contain an ammonium, there negligible products. These results indicate loss selectivity observed amine-captured carbamate, likely due generation acidic well greater challenge reducing compared CO2. This study illustrates catalysts high concentrated can favor evolution products when instead.

Language: Английский

Citations

0
Glycine and Boric Acid Promoted Accelerated Weathering of Limestone (AWL) Process for CO2 Absorption DOI Creative Commons

Zhang Ying Bong,

Slyvester Yew Wang Chai, Lock Hei Ngu

et al.

Process Integration and Optimization for Sustainability, Journal Year: 2025, Volume and Issue: unknown

Published: May 26, 2025

Language: Английский

Citations

0
Electrochemical reactors for the utilization of liquid-phase carbon species DOI
Jundong Wang,

Pan Zhu,

Hongling Qin

et al.

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

We summarize recent advances in electrochemical utilization of liquid-phase carbon species, highlighting distinct performance criteria, mechanistic insights, and design strategies for both concentrated capture solutions seawater-based systems.

Language: Английский

Citations

0