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Constructing S‐scheme heterojunction catalysts is a key challenge in visible‐light catalysed degradation of organic pollutants. Most heterojunction materials are reported to face significant obstacles in the separation of photogenerated electron–hole pairs owing to differences in the material size and energy barriers. In this study, sulfur‐doped g‐C3N4 oxidative‐type semiconductor materials are synthesized...
Fabricating highly efficient and long‐life redox bifunctional electrocatalysts is vital for oxygen‐related renewable energy devices. To boost the bifunctional catalytic activity of Fe‐N‐C single‐atom catalysts, it is imperative to fine‐tune the coordination microenvironment of the Fe sites to optimize the adsorption/desorption energies of intermediates during oxygen reduction/evolution reactions (ORR/OER)...
Solar‐driven CO2 conversion into valuable fuels is a promising strategy to alleviate the energy and environmental issues. However, inefficient charge separation and transfer greatly limits the photocatalytic CO2 reduction efficiency. Herein, single‐atom Pt anchored on 3D hierarchical TiO2‐Ti3C2 with atomic‐scale interface engineering is successfully synthesized through an in situ transformation and...
Dead‐end filtration is a facile method to globally align single wall carbon nanotubes (SWCNTs) in large area films with a 2D order parameter, S2D, approaching unity. Uniaxial alignment has been achieved using pristine and hot‐embossed membranes but more sophisticated geometries have yet to be investigated. In this work, three different patterns with radial symmetry and an area of 3.8 cm2 are created...
Dead‐end filtration has proven to effectively prepare macroscopically (3.8 cm2) aligned thin films from solutionbased single‐wall carbon nanotubes (SWCNTs). However, to make this technique broadly applicable, the role of SWCNT length and diameter must be understood. To date, most groups report the alignment of unsorted, large diameter (≈1.4 nm) SWCNTs, but systematic studies on their small diameter...
The innate inverse Auger effect within bulk silicon can result in multiple carrier generation. Observation of this effect is reliant upon low high‐energy photon reflectance and high‐quality surface passivation. In the photovoltaics industry, metal‐assisted chemical etching (MACE) to afford black silicon (b‐Si) can provide a low high‐energy photon reflectance. However, an industrially feasible and...
The airborne particulate matter (PM) seriously threatens people's health. Personal protective equipment with electrospun nanofibers is an effective method to make people away from air pollutants. Herein, 3D waterproof melamine‐formaldehyde polyvinyl alcohol (MF‐PVA) nanofibrous membranes are fabricated by a one‐step method combining multi‐unit needleless electrospinning and a thermal treatment device...
Particulate matter (PM) pollution has become a serious environmental concern. Nanofibrous filters are widely reported to remove PM from polluted air. Herein, efficient and lightweight PM air filters are presented using airflow synergistic needleless electrospinning composed of auxiliary fields such as an airflow field and a secondary inductive electric field. Compared to needleless electrospinning...
Intrinsic defects, including oxygen vacancies, can efficiently modify the electrochemical performance of metal oxides. There is, however, a limited understanding of how vacancies influence charge storage properties. Here, using tungsten oxide as a model system, an extensive study of the effects of structure, electrical properties, and charge storage properties of oxygen vacancies is carried out using...
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