Abstract Covalent organic frameworks (COFs) show advantageous characteristics, such as an ordered pore structure and a large surface area for gas storage separation, energy storage, catalysis, molecular separation. However, COFs usually exist difficult‐to‐process powders, preparing continuous, robust, flexible, foldable, rollable COF membranes is still challenge. Herein, with fiber morphology the first time prepared via newly introduced template‐assisted framework process are reported. This...

Abstract The electrochemical conversion of CO 2 into commodity chemicals or fuels is an attractive reaction for sustainable utilization. In this context, the application gas diffusion electrodes promising due to efficient mass transport. Herein, a scalable and reproducible method presented polytetrafluoroethylene (PTFE)‐bound copper (GDEs) via dry‐pressing compositional parameters are emphasized alter such electrodes. assembly catalytic layer plays critical role in electrode performance, as...

Abstract Photocatalytic nitrogen fixation under ambient conditions is currently widely explored in an attempt to develop a sustainable alternative for the Haber–Bosch process. In this work, defect‐rich carbon nitride, one of most investigated photocatalysts reported literature ammonia generation, combined with earth‐abundant and bioinspired FeS 2 improve activity production. By combination, enhancement ≈400% compared unmodified nitride achieved. The optimal loading established be 1 wt%,...

Monodisperse, monocrystalline magnesium ferrite (MgFe2O4) nanoparticles were synthesized phase purely by fast nonaqueous microwave-assisted solution-phase synthesis. Colloidal stabilization of the nanocrystals in media was realized either in-situ during synthesis or postsynthetically surface capping with oleylamine and oleic acid. Phase transfer to aqueous performed employing citric acid betaine hydrochloride, resulting agglomerate-free dispersions citrate- betaine-functionalized MgFe2O4...

Phase-pure magnesium ferrite (MgFe2O4) spinel nanocrystals are synthesized by a fast microwave-assisted route. The elemental composition is optimized via the ratio of precursor mixture and controlled energy-dispersive X-ray spectroscopy. Fine-tuning magnetic properties without changing overall demonstrated superconducting quantum interference device (SQUID) magnetometry Mössbauer Together with absorption spectroscopy emission spectroscopy, we confirm that degree cation inversion altered...

Phase-pure spinel-type magnetic nickel ferrite (NiFe

Responsive fluorescent materials offer a high potential for sensing and (bio-)imaging applications. To investigate new concepts such to broaden their applicability, the previously reported non-fluorescent zinc(II) complex [Zn(L)] that shows coordination-induced turn-on emission was encapsulated into family of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) diblock copolymer micelles leading brightly emissive materials. Coordination-induced upon incorporation ligation in P4VP core...

Sulfonated, cross-linked porous polymers are promising frameworks for aqueous high-performance electrolyte-host systems electrochemical energy storage and conversion. The offer high proton conductivities, excellent chemical mechanical stabilities, straightforward water management. However, little is known about mass transport mechanisms in such nanostructured hosts. We report on the synthesis postsynthetic sulfonation of an aromatic framework (SPAF-2) with a 3D-interconnected nanoporosity...

Copper oxides are promising photocathode materials for solar hydrogen production due to their narrow optical band gap energy allowing broad visible light absorption. However, they suffer from severe photocorrosion upon illumination, mainly copper reduction. Nanostructuring has been proven enhance the photoresponse of CuO photocathodes; however, there is a lack precise structural control on nanoscale sol-gel synthesis and calcination achieving optically transparent thin film photoabsorbers....

This study demonstrates the successful fabrication of 3D-printed, photoactive reactor components utilizing a TiO2-polypropylene composite filament. The were employed in photocatalytic reduction nitrobenzene and photocatalyzed synthesis quinaldine. inserts subjected to hydrodynamic reactive characterization. Furthermore, viability employing solid acid as an alternative homogeneous catalyst was demonstrated for It determined that immobilization not only affects activity but also selectivity...

Covalent organic framework (COF) membranes, with their customizable chemical structures and regular nanochannels, are widely used for separation. However, challenges remain in the rapid high-yield fabrication of robust, self-standing,...

The first crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen production has been prepared.

Abstract Mesoporous NiFe 2 O 4 for electrocatalytic water splitting was prepared via soft‐templating using citric‐acid‐complexed metal nitrates as precursors. The mesopore evolution during thermal treatment examined systematically giving insights into the formation process of mesoporous . Detailed nitrogen physisorption analysis including desorption scanning experiments reveal presence highly accessible mesopores generating surface areas up to 200 m /g. ability powders perform oxygen...

Ag catalysts show high selectivities in the conversion of carbon dioxide to monoxide during electrochemical reduction reaction (CO2RR). Indeed, highly catalytically active porous electrodes with increased surface area achieve faradaic efficiencies close 100%. To establish reliable structure-property relationships, results qualitative structural analysis need be complemented by a more quantitative approach assess overall picture. In this paper, we present combination suitable methods...

Phase‐pure and highly crystalline CaFe 2 O 4 with a sponge‐like macroporous structure is synthesized for the first time via facile solution‐based microwave reaction subsequent short thermal treatment. The formation mechanism of orthorhombic phase ( Pnma ) pore network investigated in detail reveals complex this p‐type semiconductor. Superconducting quantum interference device (SQUID) magnetometry Mössbauer spectroscopy confirm changes by altered magnetic properties. Furthermore, optical...

Phase-pure spinel Ni2FeS4 nanosheets with a specific surface area of 80 m2 g–1 were successfully prepared via fast and energy-saving microwave-assisted nonaqueous sol–gel synthesis, starting from metal acetylacetonates benzyl mercaptan as the sulfur source. Synthesized characterized thoroughly by X-ray diffraction including Rietveld refinement, photoelectron spectroscopy, energy-dispersive electron microscopy, nitrogen water vapor physisorption measurements, thermogravimetric analysis...

Abstract Ba 5 Nb 4 O 15 nanofibers with tailored nanofiber diameters are prepared via electrospinning, and treated in ammonia gas to synthesize niobate oxynitride nanofibers. Most importantly, the retain their fiber morphology during ammonolysis, diameter of converted fibers can be adjusted. Only a thorough characterization, including detailed Rietveld refinements, reveal that ammonolysis results not only BaNbO 2 N, but also generates NbO 3 N as additional phase. Such N–Ba composite adjusted...

Abstract Electronic devices that can interface with biological systems are highly desirable for developing smart bionics and prosthetics. However, this is challenging since most electronic used in our daily life send signals through flow of electrons while carried via the exchange ions protons. Here, an all‐solid‐state, low‐voltage proton‐sensing device using sulfonated mesoporous silica nanoparticles as gate materials organic thin film transistor (OTFT) presented. The OTFT gated solution...

Abstract Selective adsorption of large organic molecules is controlled by switchable azobenzene‐based molecules. The azobenzene change their configuration after irradiation with light 365 nm from the trans to cis isomer. light‐induced process occurs in pore‐system mesoporous silica SBA‐15. A new synthetic route presented allowing a distinct control density functionalization on inner pore walls This may lead more possible applications functionalized material. Herein we show that behavior...

TiO2 and SrTiO3 are well-studied semiconductors for photocatalytic H2 evolution overall water splitting, respectively. Hydrothermal conversion of different starting materials enables the synthesis SrTiO3/TiO2 composites with various...

Crystalline and 3D continuous mesoporous quaternary CsTaWO 6 semiconductors are prepared with different degrees of long‐range periodic order local order, respectively, to investigate the influence pore on photocatalytic performance in hydrogen evolution photocatalysts. The degree mesopores is changed by modifying ratio between metal precursors soft polymer template poly(isoprene‐ b ‐styrene‐ ‐ethylene oxide) (PI‐ ‐PS‐ ‐PEO; ISO) sol–gel synthesis. Long‐range found have no appreciable...