Interface engineering has been recognized as one of the most promising strategies for regulating the physical and chemical properties of materials. However, constructing well‐defined nanointerfaces with efficient oxygen evolution reaction (OER) still remains a challenge. Herein, cross columnar NiTe nanoarrays supported on nickel foam are prepared. Subsequently, NiTe/NiS nanointerfaces are constructed by an ion‐exchange process. Importantly, the electrocatalytic performance for the OER can be facilitated by coupling NiTe and NiS. As a result, NiTe/NiS shows excellent OER activity with an ultralow overpotential of only 257 mV at a current density of 100 mA cm−2, and a Tafel slope of 49 mV dec−1 in 1.0 m KOH. The calculated and experimental results reveal that the strong electron interaction on nanointerfaces induces electronic structure modulation, which optimizes the binding energy of *OOH intermediates, thus improving the OER performance.

The exploration of novel porous core–shell materials is of great significance because of their prospectively improved performance and extensive applications in separation, energy conversion, and catalysis. Here, mesoporous metal–organic frameworks (MOFs) NH 2 ‐MIL‐101(Fe) as a core generate a shell with mesoporous covalent organic frameworks (COFs) NUT‐COF‐1(NTU) by a covalent linking process, the composite NH 2 ‐MIL‐101(Fe)@NTU keeping retentive crystallinity with hierarchical porosity well. Importantly, the NH 2 ‐MIL‐101(Fe)@NTU composite shows significantly enhanced catalytic conversion and selectivity during styrene oxidation. It is mainly due to the hydrophilic MOF nanocrystals readily gathering the hydrophobic reactants styrene and boosting the radical mechanism path after combining the hydrophobic COFs shell. The synthetic strategy in this systematic study develops a new rational design for the synthesis of other core–shell MOF/COF‐based hybrid materials, which can expand the promising applications.

Biomass conversion and biorefinery provide a feasible and novel way to release the increasingly serious energy crisis and environmental deterioration. 2,5-furandicarboxylic acid (FDCA) has received increasing attention as a significant...

the emerging global energy crisis. [1] To boost the hydrogen production efficiency, the rational design and fabrication of semiconductor photoelectrodes with broad light absorption, adequate exciton generation, efficient charge separation/transfer, and long-term stability are highly desired. [2] Recently, semiconductors quantum dots (QDs) have demonstrated huge potential as light sensitizers in photoanodes for high efficiency solar-driven PEC application due to their size/shape/composition-tunable optical properties that features considerable overlap with solar spectrum. [3] However, the state-of-the-art QDs used in current PEC systems still suffer from major limitations including highly toxic heavy metal elements (Pb, Cd etc.), insufficient charge separation/transfer, and low photo-stability. [1b,4] Developing eco-friendly core/shell structured QDs is a promising strategy to address these issues, while a proper selection of core and shell materials is necessary to obtain core/shell QDs with tailored band structure, optimized optical properties/ charge dynamics, and enhanced photo/chemical stability for high performance and stable solar-to-hydrogen conversion.Among various semiconductor QDs, heavy metal-free InP QDs have recently attracted great attention due to their large absorption coefficient, narrow band gap (≈1.34 eV in bulk), and wide wavelength tunability. [5] Nevertheless, bare InP QDs can exhibit abundant surface defect states, resulting in severe non-radiative recombination for largely reduced quantum yield (QY, usually <5%) and photo/chemical stability. [6] Generally, inorganic shell (such as ZnS and ZnSe) were coated on InP core QDs to form type I band alignment with improved radiative emission and photo/chemical stability. [7] Considering the stress-induced defects at the core/shell interface, the ZnSe shell with a lower lattice mismatch (3.4%) as compared to ZnS (7.6%) is more appropriate to coat on InP core for optimized optical characteristics. [8] In 2019, Jang et al. synthesized InP/ZnSe/ZnS QDs to fabricate a red QDs-light-emitting diode (QLED) with an external quantum efficiency of 21.4%, which is considered as a milestone for the display application based on environmentally friendly QDs, demonstrating the huge potential of InP-based core/shell QDs as building blocks in optoelectronic devices. [9] However, to date, most of the investigations regarding InP-based core-shell QDs are mainly focused on enhancing As emerging eco-friendly alternatives to traditional Cd/Pb-based quantum dots (QDs), InP/ZnSe(S) core/shell QDs have demonstrated huge potential in light-emitting technologies. So far, these QDs have been rarely employed in solar energy conversion applications due to their type-I band structure offering limited photo-induced charge carrier separation and transfer. Here, a controllable Cu shell doping approach is reported to engineer the optoelectronic properties of InP/ZnSe core/shell QDs and realize high performance and stable solar-driven photoelectrochemical (PEC) hydrogen evol...

To construct green chemical synthesis system for future life of human beings, the utilization of water as oxygen source and electricity as driving force for the oxygenation of biomass valorization...