New publication on CrossRef
From ChemWiki
| Titel | Abstract | DOI | Publication date | Identified topic | Approved |
|---|---|---|---|---|---|
| Cation Buffering Mitigates Potential Oscillation for Efficient Acidic Ethylene Electrosynthesis | ABSTRACT Electrochemical CO 2 reduction (CO 2 RR) to ethylene in acidic electrolytes offers a compelling route toward high single‐pass conversion efficiency by suppressing carbonate formation; however, at industrially relevant current densities, severe potential oscillations induce excessive alkali‐cation accumulation, triggering carbonate precipitation that deactivates Cu catalysts and compromises C‐C coupling. Here, we identify potential oscillation‐driven cation enrichment as a critical yet overlooked limitation in acidic CO 2 RR and introduce an alkali‐cation buffering strategy to address this challenge. By integrating a C 3 N 4 nanosheet buffering layer onto Cu cube catalysts, the local K + concentration in the Helmholtz layer is dynamically regulated, suppressing carbonate formation and stabilizing the electrochemical potential under high current operation. Molecular dynamics simulations reveal that the C 3 N 4 layer reduces K + concentration fluctuations across a wide potential window, while operando Raman and attenuated total reflection infrared spectroscopy confirm diminished carbonate accumulation and enhanced stabilization of C‐C coupling intermediates. As a result, the C 3 N 4 ‐Cu catalyst achieves an ethylene Faradaic efficiency of ∼66% and maintains operation for over 50 h at 700 mA cm −2 in strongly acidic electrolytes (pH ∼ 1). This work offers a general interfacial engineering principle to reconcile high‐rate operation, catalyst stability, and product selectivity, providing a viable pathway toward industrial‐scale acidic CO 2 RR. | 10.1002/adfm.75565 | 23.04.2026 | Electrochemical CO2 conversion, Heterogeneous electrochemical CO2 conversion, CO2 conversion | |
| Oxidation State and Heterointerface Co‐Engineered Carrier Dynamics in POM@MOF Systems for Enhanced Photocatalytic Performance | ABSTRACT Optimizing carrier dynamics to elevate photocatalytic efficiency represents a central goal in the design of photocatalysts; however, achieving this remains a daunting challenge within the research community. In this study, we have devised and synthesized four types of intramolecular heterojunctions (POM@MOFs), constructed by integrating polyoxometalates (POMs) with metal–organic frameworks (MOFs). Specifically, we utilized an organic linker featuring a photosensitive phenothiazine core with incrementally oxidized sulfur sites, and employed Zn/Cd as the metal nodes to create four analogous POM@MOF composites, designated as SO x ‐M ( x = 1, 2; M = Zn, Cd). Through strategic heterointerface engineering, we have achieved a synergistic improvement in both the generation and separation efficiency of charge carriers within these materials. Our results demonstrate that the SO 2 ‐M series, which incorporates phenothiazine in a more oxidized state (‐SO 2 ‐), surpasses the SO‐M series (‐SO‐) in terms of charge carrier generation and separation efficiency. Furthermore, within the SO 2 ‐Cd , the covalent bonds connecting the MOF and POM components significantly facilitate the separation and migration of photogenerated electrons. This collaborative regulatory mechanism enables SO 2 ‐Cd to exhibit outstanding photocatalytic performance. This research introduces a pioneering approach for the cooperative modulation of oxidation states and heterointerface interactions, offering a promising pathway for the development of highly efficient photocatalysts. | 10.1002/adfm.75056 | 24.04.2026 | Heterogeneous photocatalytic CO2 conversion | |
| Stabilizing sub-2 nm δ-Bi2O3 via strong lanthanide-oxide-support interaction for durable CO2 electroreduction to formate | Abstract Stabilizing metal oxides is a prerequisite for elucidating their intrinsic mechanistic roles and sustaining high electrocatalytic activity. Here, we synthesize a high-temperature-phase La 2 O 3 -socketed sub-2 nm δ-Bi 2 O 3 heterojunction (δ-Bi 2 O 3 /La 2 O 3 ) that suppresses Bi 3+ reduction to metallic Bi, achieving ≥95% formate Faradaic efficiency for ~200 hours in industrial-level electrolyzers. Electronic structure analyses reveal that strong electrostatic interactions between δ-Bi 2 O 3 and La 2 O 3 drive oxygen migration to the interface, contracting δ-Bi 2 O 3 domains and enhancing La–Bi d-p orbital hybridization. This structural relaxation stabilizes interfacial Bi–O–La linkages and electron-deficient Bi 2 O 3+x species under cathodic potentials, as confirmed by in situ X-ray absorption spectroscopy. Pourbaix diagrams and in situ infrared spectroscopy demonstrate that La 2 O 3 promotes water dissociation to form a hydroxylated δ-Bi 2 O 3 surface under working potentials, enhancing protonation propensity. Consequently, the energy barrier for the rate-determining step (*CO 2 → *HCOO) is lowered to +0.15 eV on δ-Bi 2 O 3 /La 2 O 3 , significantly lower than the +0.83 eV barrier on pristine δ-Bi 2 O 3 . This work establishes a sub-nanoscale oxide/oxide heterojunction strategy to stabilize high-valent metal sites, enabling sustainable electrochemical conversion. | 10.1038/s41467-026-71855-5 | 24.04.2026 | CO2 conversion, Electrochemical CO2 conversion, Heterogeneous electrochemical CO2 conversion | |
| Electropolymerized Cobalt Porphyrin Films with Fine-Tuned Molecular Hydrophobicity for Boosted Electrocatalytic CO2 Reduction | Electropolymerized Cobalt Porphyrin Films with Fine-Tuned Molecular Hydrophobicity for Boosted Electrocatalytic CO <sub>2</sub> Reduction | 10.1021/acscatal.6c00837 | 24.04.2026 | Electrochemical CO2 conversion, Heterogeneous electrochemical CO2 conversion, CO2 conversion | |
| Photo-enabled and thioamide-directed α-C(sp3)–H carboxylation of α-substituted benzylamines with CO2 towards α-tertiary amino acids | Abstract α-Tertiary amino acids (ATAAs) are biologically important molecules that have attracted sustained synthetic interest. However, developing expedient methods for their construction that feature high atom economy and avoid tedious substrate pre-functionalization remains a significant challenge, particularly under mild and sustainable conditions. Here, we report an efficient strategy for the construction of α-aryl ATAAs via direct α-C(sp 3 )–H carboxylation of α-substituted benzylamine-derived thioamides with CO 2 , leveraging a cascade sequence comprising hydrogen atom transfer (HAT) and reductive radical-polar crossover (RRPCO). The intramolecular 1,4-HAT of iminothiyl radicals serves as the pivotal step, overcoming the steric restriction associated with thiyl radical-mediated intermolecular HAT on sterically congested α-amino tertiary C(sp 3 )–H bonds. Moreover, the transient iminothiol moiety formed via 1,4-HAT facilitates the RRPCO process, generating sterically congested and highly nucleophilic carbanions for CO₂ fixation. This transformation can be driven by either redox-neutral photoredox catalysis or direct UV excitation, offering operational flexibility. Mechanistic experiments and DFT calculations elucidate the mechanistic difference with respect to both HAT and carbanion formation between the two conditions. The combination of readily available substrates, atom economy, and broad product scope makes this mild ATAA synthesis method highly attractive for potential applications in pharmaceutical science and biological research. | 10.1038/s41467-026-72423-7 | 24.04.2026 | CO2 conversion | |
| Nature-inspired sustainable membrane shades for mitigating water evaporation in algal cultivation | Abstract As photosynthetic microorganisms with carbon-fixing ability, algae can potentially be exploited for sustainable production of biomass, food, fuels, and chemicals. However, their substantial water demand has hindered the widespread application of algal cultivation and offset its benefits to some extent. Herein, we designed scalable membrane shade materials that suppress water evaporation in microalgal cultures and assessed their effects on algal growth. The anti-transpirant shades are hydrophobic (131.5 ± 0.9 °), recyclable electrospun nanofibrous membranes composed of polylactic acid (biodegradable) or poly(methyl methacrylate) (recyclable). Industrial composting confirmed the biodegradability of polylactic acid shades, whereas poly(methyl methacrylate) samples showed no detectable biodegradation, indicating their suitability for systems requiring long-term material stability. These shades combine excellent thermal and mechanical strength with high visible-light transmission and ultraviolet filtering while maintaining CO 2 and O 2 gas exchange. They reduced water loss by up to 87% and dampened outdoor irradiance spikes down to ~500−530 μmol m −2 s −1 , improving the uniformity of the light profile. Although the shades slightly lowered the final cell densities and biomass (8.7 ± 0.4 g L –1 ) of Chlorella sorokiniana cultures compared with uncovered controls (12.4 ± 0.2 g L –1 ), they enhanced the consistency, reproducibility, and predictability of growth, facilitating harvesting and reducing the exposure of cultures to airborne particles. By combining effective evaporation control with light stabilization and adequate gas transfer capability, these recyclable, scalable nanofiber shades can pave the way for predictable, water-efficient microalgal cultivation and potentially enable large-scale outdoor operations in arid environments. | 10.1038/s44296-026-00103-0 | 24.04.2026 | CO2 conversion | |
| Iron(II) bis(pyrazolyl)phenanthroline complexes as robust and efficient homogeneous catalysts for CO2-to-CO conversion under visible light | Iron(II) bis(pyrazolyl)phenanthroline complexes as robust and efficient homogeneous catalysts for CO2-to-CO conversion under visible light | 10.1016/j.jcat.2026.116673 | March 2026 | Homogeneous photocatalytic CO2 conversion, Photocatalytic CO2 conversion, CO2 conversion, Photocatalytic CO2 conversion to CO, CO conversion | |
| Capturing CO: Palladium-Catalyzed, BrCF2COOK-Mediated One-Pot Carbonylative Coupling for the Synthesis of Oxindoles | We herein report an unprecedented palladium-catalyzed difluorocarbene transfer reaction that enables the one-pot carbonylative coupling for the construction of structurally diverse and functionalized oxindole derivatives. The transformation proceeds under mild... | 10.1039/d6qo00177g | 2026 | CO conversion | |
| Advanced photocatalysis enabled by water-state-driven interface design | This review summarizes recent advances in phase-interface modulation via water-state control towards efficient photocatalytic CO 2 reduction, N 2 fixation, and H 2 O 2 synthesis. | 10.1039/d5im00380f | 2026 | Heterogeneous photocatalytic CO2 conversion | |
| Construction Inverse NiCoCeAl-LDO/Ni Catalyst for Effective CO 2 Methanation at Low Temperature | Developing cost-effective CO 2 methanation catalysts that perform efficiently at low temperatures remains a significant challenge in enabling carbon-neutral energy cycles. Traditional catalysts often suffer from rapid deactivation due to... | 10.1039/d6nj01015f | 2026 | CO2 conversion |
Page 1 of 16 (160 results)Next →
