HClO-Mediated Photoelectrochemical Epoxidation of Alkenes with Near 100 % Conversion Rate and Selectivity by Regulating Lattice Chlorine Cycle.

Directional organic transformation via a green, sustainable catalytic reaction has attracted a lot of attention. Herein, we report a photoelectrochemical approach for highly selective epoxidation of alkenes in a salt solution using Co (OH) Cl (CoOCl) as a bridge of photo-generated charge, where the lattice Cl of CoOCl can be oxidized to generate HClO by the photo-generated holes of BiVO photoanode and be spontaneously recovered by Cl of a salt solution, which then oxidizes the alkenes into the corresponding epoxides. As a result, a series of water-soluble alkenes, including 4-vinylbenzenesulfonic acid sodium, 2-methyl-2-propene-1-sulfonic acid sodium, and 3-methyl-3-buten-1-ol can be epoxidized with near 100 % conversion rate and selectivity.

Supramolecular self-assemble deficient carbon nitride nanotubes for efficient photocatalytic CO reduction.

Carbon nitride is an attractive non-metallic photocatalyst due to its small surface area, rapid electron-hole recombination, and low absorption of visible light. In this study, one-dimensional carbon nitride nanotubes were successfully synthesized by supramolecular self-assembly method for photocatalytic reduction of CO under mild conditions. The material demonstrates significantly improved CO-to-CO activity compared to bulk carbon nitride under visible light irradiation, with a rate of 12.

Tailoring the Nanoporosity and Photoactivity of Metal-Organic Frameworks With Rigid Dye Modulators for Toluene Purification.

Facile synthesis of hierarchically porous metal-organic frameworks (MOFs) with adjustable porosity and high crystallinity attracts great attention yet remains challenging. Herein, a micromolar amount of dye-based modulator (Rhodamine B (RhB)) is employed to easily and controllably tailor the pore size of a Ti-based metal-organic framework (MIL-125-NH ). The RhB used in this method is easily removed by washing or photodegradation, avoiding secondary posttreatment.

Tailored BiVO Photoanode Hydrophobic Microenvironment Enables Water Oxidative H O Accumulation.

Direct photoelectrochemical 2-electron water oxidation to renewable H O production on an anode increases the value of solar water splitting. BiVO has a theoretical thermodynamic activity trend toward highly selective water oxidation H O formation, but the challenges of competing 4-electron O evolution and H O decomposition reaction need to overcome. The influence of surface microenvironment has never been considered as a possible activity loss factor in the BiVO -based system.

NiFe-bimetal-organic framework grafting oxygen-vacancy-rich BiVO photoanode for highly efficient solar-driven water splitting.

Bismuth vanadate (BVO) possesses great potential in photoelectrochemical water splitting application, but still suffers from low charge transfer efficiency as well as poor chemical stability. Herein, we have fabricated a thin NiFe-bimetal-organic framework (NiFe-MOF) layer grafting surface oxygen vacancies enriched BVO photoanode (NiFe-O-BVO), which improves the charge separation and transfer efficiency during oxygen evolution process. Meanwhile, the NiFe-MOFs thin layer can not only protect the surface O of BVO, but also efficiently inhibits the photocorrosion.

Ferrous-based electrolyte for simultaneous NO absorption and electroreduction to NH using Au/rGO electrode.

Electrochemical reduction of NO to NH (NORR) is an attractive approach to mildly realize NO removal and valuable NH production. The electrolyte, as function as the NO absorbent, is crucial to apply electrochemical technology in practical de-NO engineering. In this paper, the ferrous chelate acted as the electrolyte for effective NO absorption in NORR based on the Brown-ring reaction.

Ag and MOFs-derived hollow CoO decorated in the 3D g-CN for creating dual transferring channels of electrons and holes to boost CO photoreduction performance.

The rapid recombination of photoinduced charge carriers and low selectivity are still challenges for the CO photoreduction. Herein, we proposed that ZIF-67-derived CoO hollow polyhedrons (CoHP) were embedded into NaCl-template-assisted synthesized 3D graphitic carbon nitride (NCN), subsequently, loading Ag by photo-deposition as efficient composites (CoHP@NCN@Ag) for CO photoreduction. This integration simultaneously constructs two heterojunctions: p-n junction between CoO and g-CN and metal-semiconductor junction between Ag and g-CN, in which CoO and Ag serve as hole (h) trapping sites and electron (e) sinks, respectively, achieving spatial separation of charge carriers.

Enhanced light-driven CO reduction on metal-free rich terminal oxygen-defects carbon nitride nanosheets.

Exploiting highly-efficient and metal-free photocatalyst for CO conversion into useful chemicals is a promising pathway to solve the energy and environmental crises. In this work, through a facile exfoliation process, an ultra-thin and short-range order g-CN nanosheet with rich terminal oxygen defects is successfully constructed, which presents total electron yield of 36.30 μmol gh, 3.

Dynamic Restructuring of Cu-Doped SnS Nanoflowers for Highly Selective Electrochemical CO Reduction to Formate.

With ever-increasing energy consumption and continuous rise in atmospheric CO concentration, electrochemical reduction of CO into chemicals/fuels is becoming a promising yet challenging solution. Sn-based materials are identified as attractive electrocatalysts for the CO reduction reaction (CO RR) to formate but suffer from insufficient selectivity and activity, especially at large cathodic current densities. Herein, we demonstrate that Cu-doped SnS nanoflowers can undergo in situ dynamic restructuring to generate catalytically active S-doped Cu/Sn alloy for highly selective electrochemical CO RR to formate over a wide potential window.

Combined Schottky junction and doping effect in CdZnS@Au/BiVO Z-Scheme photocatalyst with boosted carriers charge separation for CO reduction by HO.

A Z-scheme photosystems combining Schottky junction and loading of applicable bandgap semiconductor is beneficial for enhancing the charge carriers' separation/transfer as well as maintain their excellent redox ability. Here, CdZnS@Au was in-situ deposited on the (010) facets of BiVO taking Au as a bridge for constructing a sandwich structure CdZnS@Au/BiVO Z-scheme photocatalyst. The electrons in BiVO (010) migrate unidirectionally to Au nanoparticles across the Schottky junction and effectively suppress opposite electrons flow, then be captured by the excited holes in CdZnS.

Highly-efficient visible-light-driven photocatalytic H evolution integrated with microplastic degradation over MXene/ZnCdS photocatalyst.

The development of highly-efficient photocatalyst for H production integrated with microplastic degradation is significant to meet the demand for clean energy and resolve "white pollution". Herein, a series of MXene/ZnCdS photocatalysts were successfully fabricated for H evolution integrated with degradation of polyethylene terephthalate (PET). The resultant photocatalysts exhibited excellent photocatalytic performance, and the best photocatalytic H evolution rate can reach 14.

Amino-Assisted NH-UiO-66 Anchored on Porous g-CN for Enhanced Visible-Light-Driven CO Reduction.

Constructing heterostructured photocatalysts is an efficient method to improve photocatalytic carbon dioxide (CO) reduction. Herein, holey g-CN (HGN) with rich amino groups (-NH) was hybridized with NH-UiO-66 (NUZ) via a facile in situ growth method. NUZ nanocrystals were anchored on HGN via NHx-Zr-O chemical bonding, leading to the uniform dispersion and avoiding the leaching of NUZ, thus showing excellent stability in photocatalysis.

Facile fabrication of oxygen and carbon co-doped carbon nitride nanosheets for efficient visible light photocatalytic H evolution and CO reduction.

In this study, to overcome the low charge transportation efficiency and poor visible light absorption ability, and achieve highly efficient photocatalytic applications, carbon nitride nanosheets with oxygen and carbon co-doping were successfully designed and fabricated. The resultant carbon nitride nanosheets exhibited efficient photocatalytic H evolution and CO reduction performance, highlighting the efficacy of such a strategy. The highest H evolution rate could reach 698.

Amino-Assisted Anchoring of CsPbBr Perovskite Quantum Dots on Porous g-C N for Enhanced Photocatalytic CO Reduction.

Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr QDs (CPB) on NH -rich porous g-C N nanosheets (PCN) to construct the composite photocatalysts via N-Br chemical bonding. The 20 CPB-PCN (20 wt % of QDs) photocatalyst exhibits good stability and an outstanding yield of 149 μmol h  g in acetonitrile/water for photocatalytic reduction of CO to CO under visible light irradiation, which is around 15 times higher than that of CsPbBr QDs.

[Review on non-adaptivity of schistosomes and hosts].

The specificity of schistosomes to hosts and the compatibility of hosts to schistosomes are formed during the long evolution process of them, they are not only related closely to environment but also to other factors such as the heredity of schistosomes and hosts. This paper reviews the non-adaptivity of schistosomes and hosts from the respects of genetics, immunology, cytobiology, molecular biology, and physiology.