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Efficient CO_(2)Reduction to Formate on CsPbI_(3) nanocrystals Wrapped with Reduced Graphene Oxide

Nano-Micro Letters 2023年第10期15卷 1-14页

作者： Minh Tam Hoang Chen Han Zhipeng Ma Xin Mao Yang Yang Sepideh Sadat Madani Paul Shaw Yongchao Yang Lingyi Peng Cui Ying Toe Jian Pan Rose Amal Aijun Du Tuquabo Tesfamichael Zhaojun Han Hongxia Wang School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Centre for Materials Science Queensland University of TechnologyBrisbaneQLD 4001Australia School of Chemical Engineering The University of New South WalesKensingtonNSW 2052Australia Centre for Organic Photonics&Electronics(COPE) School of Chemistry and Molecular BiosciencesThe University of QueenslandBrisbaneQLD 4072Australia School of Engineering The University of NewcastleCallaghanNSW 2038Australia

Transformation of greenhouse gas(CO_(2))into valuable chemicals and fuels is a promising route to address the global issues of climate change and the energy *** halide perovskite catalysts have shown their potential in promoting CO_(2)reduction reaction(CO_(2)RR),however,their low phase stability has limited their application ***,we present a reduced graphene oxide(rGO)wrapped CsPbI_3 perovskite nanocrystal(NC)CO_(2)RR catalyst(CsPbI_3/rGO),demonstrating enhanced stability in the aqueous *** CsPbI_3/rGO catalyst exhibited>92%Faradaic efficiency toward formate production at a CO_(2)RR current density of~12.7 mA cm^(-2).Comprehensive characterizations revealed the superior performance of the CsPbI_3/rGO catalyst originated from the synergistic effects between the CsPbI_3 NCs and rGO,i.e.,rGO stabilized theα-CsPbI_3 phase and tuned the charge distribution,thus lowered the energy barrier for the protonation process and the formation of~*HCOO intermediate,which resulted in high CO_(2)RR selectivity toward *** work shows a promising strategy to rationally design robust metal halide perovskites for achieving efficient CO_(2)RR toward valuable fuels.

关键词： perovskite nanocrystal Electrocatalyst Inorganic perovskite CO_(2)reduction Formate production

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Highly Stable CsPbBr_(3) nanocrystal Phosphors by Surface Passivation and Encapsulation

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Chemical Research in Chinese Universities 2022年第2期38卷 588-595页

作者： SHANG Zheliang XUE Weinan WANG Wei LI Yan Shanghai Key Laboratory of Functional Materials Chemistry Institute of Applied ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237P.R.China

The colloidal all-inorganic CsPbX_(3)(X=I, Br, Cl) perovskite nanocrystals(NCs) with unique optical properties have attracted considerable attention in the field of semiconductor nanocrystals, but their application is hindered by stability issues caused by surface defects and environmental factors. Usually with inert layer encapsulation, the stability of CsPbX_(3) NCs can be significantly enhanced. However, due to the loss of highly dynamic oleic acid/oleylamine ligands, it is usually accompanied by a decrease in the photoluminescence quantum yield(PLQY). Herein, we report a facile method for preparing CsPbBr_(3) NCs based green phosphors with high stability and bright emission. With modification of colloidal CsPbBr_(3) NCs by di-dodecyldimethylammonium bromide and sequent encapsulation in the as-synthesized mesoporous MOF-5, the green emitting phosphors with enhanced stability and a PLQY of 77% were obtained. The phosphors exhibit enhanced resistance against ambient oxygen, UV light, heat treatment and water. These excellent properties show the potential value of our prepared NCs as stable phosphors in light-emitting devices.

关键词： perovskite nanocrystal Phosphor Surface passivation Encapsulation Mesoporous MOF-5

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Smartphone-based rapid and visual pathological diagnosis of glioma using perovskite probes

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InfoMat 2023年第11期5卷 40-48页

作者： Dongdong Wu Jimei Chi Junzhen Fan Lijun Cheng Xuning Wang Xu Yang Meng Zhang Zewei Lian Zengqi Huang Huadong Wang Hongfei Xie Sisi Chen Qi Pan Zeying Zhang Bingda Chen Guochen Sun Bainan Xu Meng Su Yanlin Song Department of Neurosurgery The First Medical CentreChinese PLA General Hospital BeijingBeijingthe People's Republic of China Medical School of Chinese PLA Beijingthe People's Republic of China Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Beijingthe People's Republic of China University of Chinese Academy of Sciences Beijingthe People's Republic of China Department of Pathology Third Medical CenterChinese PLA General HospitalBeijingthe People's Republic of China Department of General Surgery The Air Force Hospital of Northern Theater PLAShenyangthe People's Republic of China Department of Neurosurgery The Second Hospital of Southern District of Chinese NavySanyathe People's Republic of China

Histopathology plays a great role in diagnosing various diseases,which is considered as a golden standard for tumor *** tissue constituents must be stained by visible labels for microscopic analysis by medical ***,this process is time-consuming,labor-intensive,and expensive,which requires rapid pathological approaches for diagnosis in the operating ***,we present an easy-to-process and high-performance perovskite biological probes for rapid and visual pathological diagnosis of *** quantum dots can be encapsulated by the copolymer into nanocrystals(PNCs)with a diameter of 100 nm,which is modified with chlorotoxin to achieve the specific recognition of *** from the super photoluminescence quantum yield(above 93%)of EVA@PNCs aqueous solution,the glioma can be clearly imaged and captured via a smartphone under the excitation of a handheld UV *** demonstrate the visualization and efficiency of PNC probes,different malignant grades of brain tumor sections can be distinguished in no more than 5 *** strategy provides a general auxiliary diagnosis platform for achieving the histopathology analysis near the operating bed,which is currently not feasible with standard histochemical staining methods.

关键词： glioma pathological diagnosis perovskite nanocrystal smartphone-based imaging

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Endowing inorganic nanomaterials with circularly polarized luminescence

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Aggregate 2022年第1期3卷 108-121页

作者： Dongxue Han Chengxi Li Chengyu Jiang Xue Jin Xiongbin Wang Rui Chen Jiaji Cheng Pengfei Duan CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijingP.R.China Key Laboratory for the Green Preparation and Application of Functional Materials Ministry of EducationSchool of Materials Science and EngineeringHubei UniversityWuhanP.R.China University of Chinese Academy of Sciences BeijingP.R.China Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhenP.R.China

Recently,materials with circularly polarized luminescence(CPL)properties have attracted substantial attention because they offer new perspectives in fundamental research and wide applications in photonics,bio-encoding,catalysis,and so *** importance has recently promoted the development of CPL-active materials from the traditional realm of organics to newly released areas in *** to the advantages of inorganic nanomaterials in stability,high luminescent quantum efficiency,material diversity,and the diversity of shapes and sizes,extensive research about CPL active inorganic nanomaterials has been done in the past decades leading to great signs of progress on synthesis,characterizations,and potential *** this review,therefore,we will thoroughly describe the general design principles of inorganic nanomaterials with CPL activity,basically according to the origins of chirality in inorganic nanomaterials:intrinsic chirality in inorganic nanomaterials,ligand-induced chirality,and structural chirality caused by the supramolecular assembly,*** representative applications of the CPL-active inorganic nanomaterials are presented with respect to challenges,prospective,and problems that unsolved to date.

关键词： circularly polarized luminescence inorganic nanomaterials perovskite nanocrystal quantum dot upcon-version nanoparticle

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Aluminum Distearate-Modified CsPbX_(3)(X=I,Br,or Cl/Br) nanocrystals with Enhanced Optical and Structural Stabilities

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CCS Chemistry 2020年第2期2卷 13-23页

作者： Weinan Xue Xiaoyan Wang Wei Wang Fangfang He Wei Zhu Yan Li Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

Colloidal all-inorganic perovskite nanocrystals(PNCs),possessing unique optical properties,have attracted considerable attention in the field of semiconductor nanocrystals(NCs),but their application is hindered by the stability issue resulting partly from dynamic capping ligand ***,we report a simple method for the synthesis of all-inorganic cesium lead-based(CsPbX3)NCs with enhanced structural stability and photoluminescence quantum *** distearate(AlDS)was introduced into the preparation of CsPbX3 NCs,on the basis that the surface defects of CsPbX3 NCs are passivated to form a protective layer on the CsPbX3 NC surface *** from surface modification,the resistance of the CsPbX3 NC dispersion against ethanol,ultraviolet irradiation,and heat treatment was enhanced ***,the photoluminescence intensity and stability of the AlDS–modified NC-based films displayed functional superiority to those of pristine NC-based films.

关键词： perovskite nanocrystal cesium lead halide aluminum distearate multidentate ligand stability

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