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      Intrinsic Mechanisms of Morphological Engineering and Carbon Doping for Improved Photocatalysis of 2D/2D Carbon Nitride Van Der Waals Heterojunction

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          A metal-free polymeric photocatalyst for hydrogen production from water under visible light.

          The production of hydrogen from water using a catalyst and solar energy is an ideal future energy source, independent of fossil reserves. For an economical use of water and solar energy, catalysts that are sufficiently efficient, stable, inexpensive and capable of harvesting light are required. Here, we show that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor. Contrary to other conducting polymer semiconductors, carbon nitride is chemically and thermally stable and does not rely on complicated device manufacturing. The results represent an important first step towards photosynthesis in general where artificial conjugated polymer semiconductors can be used as energy transducers.
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            Is Open Access

            Structural absorption by barbule microstructures of super black bird of paradise feathers

            Many studies have shown how pigments and internal nanostructures generate color in nature. External surface structures can also influence appearance, such as by causing multiple scattering of light (structural absorption) to produce a velvety, super black appearance. Here we show that feathers from five species of birds of paradise (Aves: Paradisaeidae) structurally absorb incident light to produce extremely low-reflectance, super black plumages. Directional reflectance of these feathers (0.05–0.31%) approaches that of man-made ultra-absorbent materials. SEM, nano-CT, and ray-tracing simulations show that super black feathers have titled arrays of highly modified barbules, which cause more multiple scattering, resulting in more structural absorption, than normal black feathers. Super black feathers have an extreme directional reflectance bias and appear darkest when viewed from the distal direction. We hypothesize that structurally absorbing, super black plumage evolved through sensory bias to enhance the perceived brilliance of adjacent color patches during courtship display.
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              A review on g-C 3 N 4 -based photocatalysts

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                Author and article information

                Contributors
                Journal
                ENERGY & ENVIRONMENTAL MATERIALS
                Energy & Environ Materials
                Wiley
                2575-0356
                2575-0356
                May 13 2022
                Affiliations
                [1 ]<idGroup xmlns="http://www.wiley.com/namespaces/wiley"> <id type="ringgold" value="2498"></id> </idGroup> School of Engineering Edith Cowan University 270 Joondalup Drive Joondalup WA 6027 Australia
                [2 ]College of Chemical Engineering China University of Petroleum (East China) Qingdao 266580 China
                [3 ]<idGroup xmlns="http://www.wiley.com/namespaces/wiley"> <id type="ringgold" value="91599"></id> </idGroup> Jiangsu Key Laboratory of Process Enhancement and New Energy Equipment Technology School of Mechanical and Power Engineering Nanjing Tech University Nanjing Jiangsu 211816 China
                [4 ]<idGroup xmlns="http://www.wiley.com/namespaces/wiley"> <id type="ringgold" value="35017"></id> </idGroup> Center for Integrated Nanostructure Physics Institute for Basic Science (IBS) Sungkyunkwan University Suwon 16419 Republic of Korea
                [5 ]<idGroup xmlns="http://www.wiley.com/namespaces/wiley"> <id type="ringgold" value="1066"></id> </idGroup> School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
                [6 ]State Key Laboratory of Heavy Oil Processing Institute of New Energy College of Chemical Engineering China University of Petroleum (East China) Qingdao 266580 China
                Article
                10.1002/eem2.12365
                fa1540be-fe88-401f-af10-698ecdbf5db2
                © 2022

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                http://doi.wiley.com/10.1002/tdm_license_1.1

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