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    题名 作者 年代 出处 被引量
1Rapid room-temperature synthesis of a porphyrinic MOF for encapsulating metal nanoparticles显示文摘While metal nanoparticles(NPs)have shown great promising applications as heterogeneous catalysts,their agglomeration caused by thermodynamic instability is detrimental to the catalytic performance.To tackle this hurdle,we successfully prepared a functional and stable porphyrinic metal-organic framework(MOF),PCN-224-RT,as a host for encapsulating metal nanoparticles by direct stirring at room temperature.As a result,Pt@PCN-224-RT composites with well-dispersed Pt NPs can be constructed by introducing pre-synthesized Pt NPs into the precursor solution of PCN-224-RT.Of note,the rapid and simple stirring method in this work is more in line with the requirements of environmental friendly and industrialization compared with traditional solvothermal methods.Huihui He Luyan Li Yang Liu Meruyert Kassymova Dandan Li Liangliang Zhang Hai-Long Jiang 2021Nano Research2021,14,2:3
2Surface disorder engineering in ZnCdS for cocatalyst free visible light driven hydrogen production显示文摘Metal chalcogenide solid solution,especially ZnCdS,has been intensively investigated in photocatalytic H_(2) generation due to their cost-effective synthetic procedure and adjustable band structures.In this work,we report on the defect engineering of ZnCdS with surface disorder layer by simple room temperature Li-ethylenediamine(Li-EDA)treatment.Experimental results confirm the formation of unusual Zn and S dual vacancies,where rich S vacancies(Vs)served as electron trapping sites,meanwhile Zn vacancies(Vzn)served as hole trapping sites.The refined structure significantly facilitates the photo charge carrier transfer and improves photocatalytic properties of ZnCdS.The disordered ZnCdS shows a highest photocatalytic H_(2) production rate of 33.6 mmol·g^(-1)·h^(-1) under visible light with superior photocatalytic stabilities,which is 7.3 times higher than pristine ZnCdS and 7 times of Pt(1 wt.%)loaded ZnCdS.Enna Ha Shuhong Ruan Danyang Li Yuanmin Zhu Yanping Chen Jiangyuan Qiu Zhaohui Chen Tingting Xu Jingyun Su Luyang Wang Junqing Hu 2022Nano Research2022,15,2:3
3Transition metal dichalcogenide-based mixed-dimensional heterostructures for visible-light-driven photocatalysis:Dimensionality and interface engineering显示文摘Two-dimensional(2D)transition metal dichalcogenides(TMDCs)are emerging as promising building blocks of high-performance photocatalysts for visible-light-driven water splitting because of their unique physical,chemical,electronic,and optical properties.This review focuses on the fundamentals of 2D TMDC-based mixed-dimensional heterostructures and their unique properties as visible-light-driven photocatalysts from the perspective of dimensionality and interface engineering.First,we discuss the approaches and advantages of surface modification and functionalization of 2D TMDCs for photocatalytic water splitting under visible-light illumination.We then classify the strategies for improving the photocatalytic activity of 2D TMDCs via combination with various low-dimensional nanomaterials to form mixed-dimensional heterostructures.Further,we highlight recent advances in the use of these mixed-dimensional heterostructures as high-efficiency visible-light-driven photocatalysts,particularly focusing on synthesis routes,modification approaches,and physiochemical mechanisms for improving their photoactivity.Finally,we provide our perspectives on future opportunities and challenges in promoting real-world photocatalytic applications of 2D TMDC-based heterostructures.Xiaorong Gan Dangyuan Lei Ruquan Ye Huimin Zhao Kwok-Yin Wong 2021Nano Research2021,14,6:2
4In-depth Understanding of the Effects of Intramolecular Charge Transfer on Carbon Nitride Based Photocatalysts显示文摘Intramolecular charge transfer(ICT)derived from a donor-acceptor system has been applied for years to enhance the charge mobility in the field of organic photovoltaics and chemical sensing.Similar strategies have gradually been developed in polymeric graphitic carbon nitride(GCN)photocatalytic systems for promoting the light absorption and charge separation.However,there are no reviews focusing on the effects of ICT after the modification of GCN so far.Herein,we summarize some typical literature on GCN engineering to expound profoundly the roles of ICT in electronic properties regulation in terms of in-situ formation and molecular coupling.At last,some important perspectives are also proposed.This review will deepen understanding of the traditional theory for a new recognition among such many methods to improve the performance of GCN.Zongzhao Sun Yueyang Tan Jianyong Wan Limin Huang 2021Chinese Journal of Chemistry2021,39,7:2
5Let the light be a guide:Chromophore communication in metalorganic frameworks显示文摘The photonic characteristics of chromophore-containing metal-organic frameworks(MOFs)have led to extensive photophysical studies in an effort to capitalize on the potency of precisely controlled chromophore ensembles.Several examples have laid the foundation that demonstrates how photophysical properties of chromophores can be manipulated by tuning their communications(interactions)through integration within a MOF matrix.The main focus of this review is on harnessing the versatile MOF platform to accentuate the photophysical properties of integrated chromophores.In particular,this review will highlight chromophore dynamics that enhance,alter,or tune the photoluminescence response of single-and multi-chromophore-containing scaffolds,as well as alignment-guided anisotropic fluorescence.Building upon this groundwork,utilization of a hybrid crystalline motif can induce preferential orientation of chromophores resulting in enhanced communication and tailored behavior compared to randomly oriented emissive molecules.Moreover,frameworks that produce upconverted emission via sensitized triplet-triplet annihilation(sTTA),excited-state absorption(ESA),energy transfer upconversion(ETU),multi-photon absorption(MPA),or second-harmonic generation(SHG)can invoke dynamic control of material properties using photochromic linkers and will be discussed herein with a focus on the effects of chromophore alignment.Integration within a framework is a vehicle tofuse chromophores into solid-state platforms,opening an avenue for chromophore utilization in applications such as portable electronics that require solids or thin films.For those reasons,the design of chromophore-containing MOFs with desirable properties that rely on the alignment and communication of hundreds of chromophores within a single platform is a pressing demand for the development of futuristic technologies.Corey R.Martin Preecha Kittikhunnatham Gabrielle A.Leith Anna A.Berseneva Kyoung Chul Park Andrew B.Greytak Natalia B.Shustova 2021Nano Research2021,14,2:1
6卟啉修饰g-C_(3)N_(4)提高光催化产氢活性研究显示文摘半导体光催化制氢是一种可实现持续制备和储存氢气的绿色技术.石墨相氮化碳(g-C_(3)N_(4))是研究广泛的光催化剂,但其仍存在光利用率低、光生电子和空穴易复合等问题,制约着光催化产氢的性能.利用给电子卟啉修饰g-C_(3)N_(4),构建了四(4-羧基)苯基卟啉(TCPP)以共价/非共价方式修饰g-C_(3)N_(4)的催化剂.卟啉共价修饰g-C_(3)N_(4)(gC_(3)N_(4)-TCPP0.1)及非共价复合结构(TCPP0.1/g-C_(3)N_(4))光催化产氢速率分别为6 997和5 399μmol·g^(-1)·h^(-1),较g-C_(3)N_(4)分别提高了53%和18%. TCPPx/g-C_(3)N_(4)异质结加强了界面接触,促进了电荷转移,增强了可见光吸收能力,进而提高了光催化制氢性能. g-C_(3)N_(4)-TCPPx中, TCPP的接枝拓展了共轭结构,优化了电子结构,增大了分子偶极,促进了电荷分离,共价桥键为电荷传输提供了通道.魏婧宇 刘利 卢金荣 2023分子催化2023,37,5:1
7光催化材料氮化碳接枝改性的研究进展显示文摘作为一种非金属光催化材料,石墨相氮化碳(g-C_(3)N_(4))的制备成本低廉且制备工艺简单,但存在电子-空穴复合快速、可见光吸收范围较窄等固有缺陷。为了进一步提升g-C_(3)N_(4)的光催化性能,研究者提出了采用共聚反应、酰胺反应、羟化羧化反应等方式进行化学接枝改性的思路。改性后,光催化材料的固有缺陷得到改善,g-C_(3)N_(4)的光催化性能得到显著增强。本文综述了近年来g-C_(3)N_(4)化学接枝改性取得的进展及成果,旨在为后续研究提供参考。席昊翔 孙会珠 白玉震 张琦 孙浩天 马雪琼 苏碧云 2024化工技术与开发2024,53,1:0
8Unique hollow heterostructured CdS/Cd_(0.5)Zn_(0.5)S-Mo_(1-x)W_(x)S_(2):Highly-improved visible-light-driven H_(2) generation via synergy of Cd_(0.5)Zn_(0.5)S protective shell and defect-rich Mo_(1-x)W_(x)S_(2) cocatalyst显示文摘Photocatalytic water splitting for hydrogen(H_(2))production is a green sustainable technology,in which highly-efficient steady photocatalysts are fundamentally required.In this work,unique CdS/Cd_(0.5)Zn_(0.5)S-M0_(1-x)W_(x)S_(2) photocatalyst constructed by CdS hollow nano-spheres with successively surface-modified Cd_(0.5)Zn_(0.5)S shell and defect-rich MO_(1-x)W_(x)S_(2) ultrathin nanosheets was reported for the first time.Interestingly,the Cd_(0.5)Zn_(0.5)S shell could greatly enhance the photo-stability and reduce the carrier recombination of CdS.Meanwhile,enriching active sites and accelerating charge transfer could be achieved via anchoring defect-rich Mo_(1-x)W_(x)S_(2) onto CdS/Cd_(0.5)Zn_(0.5)S hollow heterostructures.Specifically,the optimized CdS/Cd_(0.5)Zn_(0.5)S-Mo_(1-x)W_(x)Sa(6 h Cd_(0.5)Zn_(0.5)S-coating,7 wt.%Mo_(1-x)W_(x)S_(2),x=0.5)hybrid delivered an exceptional H_(2) generation rate of 215.99 mmol·g^(-1)·h^(-1),which is approximately 502,134,and 23 times that of pure CdS,CdS/Cd_(0.5)Zn_(0.5)S,and 3 wt.%Pt-loaded CdS/Cd_(0.5)Zn_(0.5)S,respectively.Remarkably,a high H_(2) evolution reaction(HER)apparent quantum yield(AQY)of 64.81%was obtained under 420-nm irradiation.In addition,the CdS/Cd_(0.5)Zn_(0.5)S-Mo_(1-x)W_(x)S_(2) was also durable for H2 production under long-term irradiation.This work provides valuable inspirations to rational design and synthesis of efficient and stable hybrid photocatalysts for solar energy conversion.Wenjing Wang Hanchu Chen Jiakun Wu Hui Wang Shaoxiang Li Bo Wang Yanyan Li Haifeng Lin Lei Wang 2022Nano Research2022,15,2:0
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