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electrontransfer, etc ; bioaccumulation; biphenyl; bromination; environmental fate; hydrogen; mechanochemistry; photocatalysis; photolysis; thermodynamics; toxicity; China; Show all 12 Subjects
Abstract:
... Polybrominated diphenyl ethers (PBDEs) are widely used as brominated flame retardants, which had attracted amounts of attention due to their harmful characteristics of high toxicity, environmental persistence and potential bioaccumulation. Many chemical reductive debromination technologies have been developed for the debromination of PBDEs, including photolysis, photocatalysis, electrocatalysis, z ...
... The cryptomelane-type manganese oxide (OMS-2)-supported Co (xCo/OMS-2; x = 5, 10, and 15 wt.%) catalysts were prepared via a pre-incorporation route. The as-prepared materials were used as catalysts for catalytic oxidation of toluene (2000 ppmV). Physical and chemical properties of the catalysts were measured using the X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FT-IR), scan ...
... Bioreduction of mobile Cr(VI) to sparingly soluble Cr(III) is an effective strategy for in situ remediations of Cr contaminated sites. The key of this technology is to screen Cr(VI)-resistant bacteria and further explore the sustainable enhancement approaches towards their Cr(VI) reduction performance. In this study, a total of ten Cr(VI)-resistant bacteria were isolated from a Cr(VI) contaminated ...
electrontransfer, etc ; biotechnology; electrodes; momentum; Show all 4 Subjects
Abstract:
... Recently several non-traditional electroactive microorganisms have been discovered. These can be considered weak electricigens; microorganisms that typically rely on soluble electron acceptors and donors in their lifecycle but are also capable of extracellular electron transfer (EET), resulting in either a low, unreliable, or otherwise unexpected current. These unanticipated electroactive microorg ...
... In recent years, there has been growing interest in the mechanism (radical or nonradical) of persulfate activation processes. In this study, the enhancement of naproxen (NPX) degradation in a Cu⁰/peroxymonosulfate (PMS) system by complexing reagents was investigated. Surprisingly, neocuproine (NCP) alters the nature of reactive species in the Cu⁰/PMS system. A high-valent copper species, Cu(III)-N ...
electrontransfer, etc ; Arabidopsis thaliana; chloroplasts; Show all 3 Subjects
Abstract:
... Cyclic electron transport/flow (CET/CEF) in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency. A crucial CEF pathway is catalyzed by a membrane-embedded NADH dehydrogenase-like (NDH) complex that contains at least 29 protein subunits and associates with photosystem I (PSI) to form the NDH–PSI supercomplex. Here, we report the 3.9 Å resolution st ...
electrontransfer, etc ; diffusivity; pyridines; solubility; Show all 4 Subjects
Abstract:
... A series of thienoviologen derivatives ([(NPr)₂TV]Cl₄ and [(OHPr)₂TV]Cl₂) with a narrow bandgap, high solubility and two-electron transfer properties as anolytes for high-performance aqueous organic redox flow batteries (AORFBs) is reported. Compared with [(OHPr)₂TV]Cl₂ and other viologen anolytes, [(NPr)₂TV]Cl₄ showed a higher diffusion coefficient (D, 3.36 × 10⁻⁶ cm² s⁻¹) and electron transfer c ...
electrontransfer, etc ; anodes; catalysts; ciprofloxacin; graphene; Show all 5 Subjects
Abstract:
... The recovery and reuse of anode materials from spent lithium-ion batteries has attracted increasing attention. This study provides a strategy for the high-value utilization of waste anode materials. Two kinds of catalysts containing different graphite C content were prepared by a calcination process using the anode material of spent lithium-ion batteries. The synthesized AM (AM-450/AM-850) catalys ...
electrontransfer, etc ; bioprocessing; cell respiration; liquids; Show all 4 Subjects
Abstract:
... Electroactive microorganisms (EAMs) use extracellular electron transfer (EET) processes to access insoluble electron donors or acceptors in cellular respiration. These are used in developing microbial electrochemical technologies (METs) for biosensing and bioelectronics applications and the valorization of liquid and gaseous wastes. EAMs from extreme environments can be useful to overcome the exis ...
electrontransfer, etc ; anodes; carbon; electrochemistry; energy; Show all 5 Subjects
Abstract:
... The design of electrodes with a unique structure has a major impact on boosting the electrochemical performance for lithium-ion batteries. Herein, the SnSe/CoSe@C composite was synthesized by a facile metal–organic framework-engaged method. The carbon layer can improve the stability and conductivity of materials. In addition, SnSe/CoSe heterojunctions can increase the electron transfer rate betwee ...
electrontransfer, etc ; liquids; molecular dynamics; porphyrins; Show all 4 Subjects
Abstract:
... The excited-state properties of an amphiphilic porphyrin–fullerene dyad and of its porphyrin analogue adsorbed at the dodecane/water interface are investigated by using surface second-harmonic generation. Although the porphyrin is formally centrosymmetric, the second-harmonic spectra of both compounds are dominated by the intense Soret band of the porphyrin. Polarization-selective measurements and ...
electrontransfer, etc ; amination; chlorine; cleavage (chemistry); Show all 4 Subjects
Abstract:
... We report an alkoxy radical process for the C–C bond cleavage and functionalization of unstrained tertiary and secondary cyclic alcohols. In the absence of a chlorine atom, the readily available iron catalysts [Fe(OBu-t)₃ or Fe(acac)₃/t-BuONa] facilitate alkoxy radical formation via the direct ligand-to-metal charge transfer of Fe alkoxide and further enable the ring opening and amination of cycli ...
electrontransfer, etc ; electrodes; physical chemistry; voltammetry; Show all 4 Subjects
Abstract:
... A theoretical analysis of reversible and quasireversible electrode reactions of a dissolved redox couple under conditions of the novel technique of differential square-wave voltammetry (DSWV) is presented. The technique is recently introduced as a hybrid form between differential pulse voltammetry (DPV) and square-wave voltammetry (SWV) as the two most advanced and competitive pulse-form voltammet ...
... Perylene diimide and its various derivatives tend to form their anion radicals after obtaining one electron, which will alter their chemical properties. Herein, we reported firstly synthesis of the unsymmetrically substituted perylene diimide in bay area using the degradation of the symmetrically substituted perylene diimide. The perylene diimide anion radical that is obtained by thermal electron ...
electrontransfer, etc ; dissociation; hydrogen production; seawater; Show all 4 Subjects
Abstract:
... Designing and fabricating efficient electrocatalysts is a practical step toward the commercial application of the efficient hydrogen evolution reaction (HER) over all pH ranges. Herein, novel Ti@Ni(OH)₂-NiMoS heterostructure with interface between crystalline Ni(OH)₂ and amorphous NiMoS was rationally designed and fabricated on Ti mesh (denoted as Ti@Ni(OH)₂-NiMoS). Acid etching and calcination ex ...
electrontransfer, etc ; boron; electrochemistry; nitrogen; silicon; sulfur; Show all 6 Subjects
Abstract:
... Recent developments in the use of boron, silicon, nitrogen and sulfur derivatives in single-electron transfer reactions for the generation of alkyl radicals are described. Photoredox catalyzed, electrochemistry promoted or thermally-induced oxidative and reductive processes are discussed highlighting their synthetic scope and discussing their mechanistic pathways. ...
electrontransfer, etc ; chlorine; nitrates; nitrogen; photocatalysis; photocatalysts; Show all 6 Subjects
Abstract:
... In this work, two polymers are connected by electrostatic self-assembly method to form a supramolecular heterojunction to remove pollutants. g-C₃N₄-Cl/PANI catalyst can be used for photocatalytic reduction of nitrate in water, and the nitrogen selectivity reaches 98.2%. Specially, charge density analysis and comparative experiments showed that the introduction of covalent chlorine increased in ele ...
electrontransfer, etc ; active sites; electrochemistry; metalloproteins; mutants; Show all 5 Subjects
Abstract:
... Long-range electron tunneling through metalloproteins is facilitated by evolutionary tuning of donor–acceptor electronic couplings, formal electrochemical potentials, and active-site reorganization energies. Although the minimal frustration of the folding landscape enables this tuning, residual frustration in the vicinity of the metallocofactor can allow conformational fluctuations required for pr ...
electrontransfer, etc ; adverse effects; cations; coordination polymers; Show all 4 Subjects
Abstract:
... Electron transport through metal–organic frameworks by a hopping mechanism between discrete redox active sites is coupled to diffusion-migration of charge-balancing counter cations. Experimentally determined apparent diffusion coefficients, Dₑᵃᵖᵖ, that characterize this form of charge transport thus contain contributions from both processes. While this is well established for MOFs, microscopic des ...
electrontransfer, etc ; anhydrides; durability; green chemistry; hysteresis; Show all 5 Subjects
Abstract:
... Organic–inorganic hybrid perovskite solar cells (PSCs) are the prime candidates for photovoltaic technologies due to their superior photoelectric performance and low-temperature processability. The electron transport layer (ETL) is one of the most significant compositions for preparing PSCs. Herein, we innovatively introduce a strategy of poly(methyl vinyl ether-alt-maleic anhydride) (PVEM) comple ...