Natural photosynthesis,which provides a green and high-efficiency energy conversion path by spatial separation of photogenerated carriers through combined actions of molecules ingeniously arranged in an efficient sola...Natural photosynthesis,which provides a green and high-efficiency energy conversion path by spatial separation of photogenerated carriers through combined actions of molecules ingeniously arranged in an efficient solar nanospace,highlights the importance of rational nanostructure design to realize artificial high-efficiency photosystem.Inspired by these unique features,we constructed a high-efficiency ternary photosystem by selectively decorating the{001}facets of 18-facet SrTiO_(3)with Au@CdS photosensitizers via a green photo-assisted method.Benefiting from the dual-facilitated charge carriers transportation in core-shell structured Au@CdS heterojunction and well-faceted 18-facet SrTiO_(3)nanocrystal,such a photo-catalyst could realize the effective spatial separation of photogenerated electrons and holes.As expected,the 18-facet SrTiO_(3)/Au@CdS photocatalyst exhibits superior activity in visible-light-driven photocatalytic hydrogen evolution(4.61 mmol h^(−1)g^(−1)),166%improvement in comparison with randomly deposited Au@CdS(1.73 mmol h^(−1)g^(−1)).This work offers new insight into the development of green and high-efficiency photocatalytic systems based on the rational nanostructure design by crystal facet engineering.展开更多
As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials synthesis.In the present study,to explo...As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials synthesis.In the present study,to explore the biosilica formation process and fabricate silica with an exquisite microstructure for lithiumion battery(LIB)electrodes,a bacterial phage(M13)is used as a biotemplate to synthesize silica with diverse morphologies:cylinders,hexagonal prisms,assemblies of smaller cylinders and nanowires.A facile ethanol bath method is conducted to coat the nanowires with nitrogen-containing carbon and carbon-coated SiO_(2) nanowires with mesochannels(C@msSiO_(2) NWs)are first used as anode materials for LIBs.Attributed to the uniform carbon coating and parallel mesochannel structure,the electronic conductivity and capacity to accommodate volume variations were significantly improved.In the electrochemical perfo rmance test,the composites calcined at 750℃(C@msSiO_(2) NWs-750)show an impressive capacity of 653 mA h g^(-1) at a current density of 500 mA g^(-1) and stability(1000 cycles).In view of the electrochemical test outcomes,the prepa ration of a sophisticated structure with an outstanding potential is easily achieved via a biomimetic strategy.展开更多
In living organisms,confined space with specific chemical composition and elaborate spatial distribution regulates the formation of natural structures.Learning from the natural structure-forming process,novel synthesi...In living organisms,confined space with specific chemical composition and elaborate spatial distribution regulates the formation of natural structures.Learning from the natural structure-forming process,novel synthesis approaches in deliberated confined systems have been proposed for obtaining designed structures.Artificial confined systems can effectively regulate the synthesis of materials with defined structures according to the geometry of confinements.Collagen fibrils provide biological confinements for the formation of hierarchical structure with periodic arrangement.Genetically engineered living organisms with designed confinements can direct the synthesis of three-dimensional nanostructures.More novel structures will be rationally fabricated in the future with the aid of deeper understanding of biological processes.展开更多
Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing environments.Biomaterials are synthesized under mild conditions through a bottom-up se...Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing environments.Biomaterials are synthesized under mild conditions through a bottom-up self-assembly process,utilizing substances from the surrounding environment,and meanwhile are regulated by genes and proteins.Additive manufacturing,which mimics this natural process,provides a promising approach to developing new materials with advantageous properties similar to natural biological materials.This review presents an overview of natural biomaterials,emphasizing their chemical and structural compositions at various scales,from the nanoscale to the macroscale,and the key mechanisms underlying their properties.Additionally,this review describes the designs,preparations,and applications of bioinspired multifunctional materials produced through additive manufacturing at different scales,including nano,micro,micro-macro,and macro levels.展开更多
基金This work was financially supported by the Natural Science Foundation of China(Nos.51832003 and 52003212)the Fun-damental Research Funds for the Central University(No.WUT 2020III034).
文摘Natural photosynthesis,which provides a green and high-efficiency energy conversion path by spatial separation of photogenerated carriers through combined actions of molecules ingeniously arranged in an efficient solar nanospace,highlights the importance of rational nanostructure design to realize artificial high-efficiency photosystem.Inspired by these unique features,we constructed a high-efficiency ternary photosystem by selectively decorating the{001}facets of 18-facet SrTiO_(3)with Au@CdS photosensitizers via a green photo-assisted method.Benefiting from the dual-facilitated charge carriers transportation in core-shell structured Au@CdS heterojunction and well-faceted 18-facet SrTiO_(3)nanocrystal,such a photo-catalyst could realize the effective spatial separation of photogenerated electrons and holes.As expected,the 18-facet SrTiO_(3)/Au@CdS photocatalyst exhibits superior activity in visible-light-driven photocatalytic hydrogen evolution(4.61 mmol h^(−1)g^(−1)),166%improvement in comparison with randomly deposited Au@CdS(1.73 mmol h^(−1)g^(−1)).This work offers new insight into the development of green and high-efficiency photocatalytic systems based on the rational nanostructure design by crystal facet engineering.
基金supported financially by the National Natural Science Foundation of China(Nos.51521001,51832003,51902236 and 31771032)。
文摘As one of the most delicate bioprocesses in nature,biosilicification is closely related to biosilica with various morphologies,and has provided abundant inspiration to materials synthesis.In the present study,to explore the biosilica formation process and fabricate silica with an exquisite microstructure for lithiumion battery(LIB)electrodes,a bacterial phage(M13)is used as a biotemplate to synthesize silica with diverse morphologies:cylinders,hexagonal prisms,assemblies of smaller cylinders and nanowires.A facile ethanol bath method is conducted to coat the nanowires with nitrogen-containing carbon and carbon-coated SiO_(2) nanowires with mesochannels(C@msSiO_(2) NWs)are first used as anode materials for LIBs.Attributed to the uniform carbon coating and parallel mesochannel structure,the electronic conductivity and capacity to accommodate volume variations were significantly improved.In the electrochemical perfo rmance test,the composites calcined at 750℃(C@msSiO_(2) NWs-750)show an impressive capacity of 653 mA h g^(-1) at a current density of 500 mA g^(-1) and stability(1000 cycles).In view of the electrochemical test outcomes,the prepa ration of a sophisticated structure with an outstanding potential is easily achieved via a biomimetic strategy.
基金This work was financially supported by the National Natural Science Foundation of China(51521001)the Ministry of Science and Technology of China(2015DFR50650)the Fundamental Research Funds for the Central University(WUT 2016IB006).
文摘In living organisms,confined space with specific chemical composition and elaborate spatial distribution regulates the formation of natural structures.Learning from the natural structure-forming process,novel synthesis approaches in deliberated confined systems have been proposed for obtaining designed structures.Artificial confined systems can effectively regulate the synthesis of materials with defined structures according to the geometry of confinements.Collagen fibrils provide biological confinements for the formation of hierarchical structure with periodic arrangement.Genetically engineered living organisms with designed confinements can direct the synthesis of three-dimensional nanostructures.More novel structures will be rationally fabricated in the future with the aid of deeper understanding of biological processes.
基金the Chengdu University introduction of a talent research start-up fund(no.2081923005)This work was supported by the Hubei Provincial Nature Science Foundation of China(2022CFB311)+1 种基金by the Fundamental Research Funds for the Central Universities(WUT:2022IVA091)This work was also supported by the National Natural Science Foundation of China(no.51832003).
文摘Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing environments.Biomaterials are synthesized under mild conditions through a bottom-up self-assembly process,utilizing substances from the surrounding environment,and meanwhile are regulated by genes and proteins.Additive manufacturing,which mimics this natural process,provides a promising approach to developing new materials with advantageous properties similar to natural biological materials.This review presents an overview of natural biomaterials,emphasizing their chemical and structural compositions at various scales,from the nanoscale to the macroscale,and the key mechanisms underlying their properties.Additionally,this review describes the designs,preparations,and applications of bioinspired multifunctional materials produced through additive manufacturing at different scales,including nano,micro,micro-macro,and macro levels.
