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Porous noble metal nanoparticles have received particular attention recently for their unique optical, thermal, and catalytic functions in biomedicine. However, limited progress has been made to synthesize such porous metallic nanostructures with large mesopores (≥25 nm). Here, a green yet facile synthesis strategy using biocompatible liposomes as templates to mediate the formation of mesoporous metallic...
Mesoporous Metal Nanostructures
In article number 2304880, Yong Zhang, Hongjun Wang, and co‐workers report on a green yet facile synthesis strategy to mediate the formation of mesoporous noble metal‐based nanostructures in a controllable fashion using biocompatible liposomes as templates. These nanostructures exhibit strong NIR‐photothermal effect, efficient catalysis of H2O2 decomposition, and high...
Organic–inorganic hybrid materials often face a stability challenge. β‐ZnTe(en)0.5, which uniquely has over 15‐year real‐time degradation data, is taken as a prototype structure to demonstrate an accelerated thermal aging method for assessing the intrinsic and ambient‐condition long‐term stability of hybrid materials. Micro‐Raman spectroscopy is used to investigate the thermal degradation of β‐ZnTe(en)...
Portable Carbon Nanotube Biosensors
Mengmeng Xiao, Yuehua Ke, Zhi‐Yong Zhang, and co‐workers develop a multi‐functionalized carbon nanotube field effect transistor biosensor arrays with a portable data reading system for the on‐site single virus level detection of SARS‐CoV‐2. The biosensor arrays can detect SARS‐CoV‐2 virus antigens and the unamplified long chain RNAs simultaneously with a detection...
The rapid and sensitive detection of trace‐level viruses in a simple and reliable way is of great importance for epidemic prevention and control. Here, a multi‐functionalized floating gate carbon nanotube field effect transistor (FG‐CNT FET) based biosensor is reported for the single virus level detection of SARS‐CoV‐2 virus antigen and RNA rapidly with a portable sensing platform. The aptamers functionalized...
Although the electrocatalytic nitrate reduction reaction (NO3−RR) is an attractive NH3 synthesis route, it suffers from low yield due to the lack of efficient catalysts. Here, this work reports a novel grain boundary (GB)‐rich Sn‐Cu catalyst, derived from in situ electroreduction of Sn‐doped CuO nanoflower, for effectively electrochemical converting NO3− to NH3. The optimized Sn1%‐Cu electrode achieves...
Carbon materials are widely accepted as promising candidates for sodium‐ion batteries (SIBs) anodes due to their chemical stability and conductivity, while the capacity is still unsatisfactory. Here, this work reports the superhigh capacity Na storage through initiating fluorine chemistry (CF bonds) in carbon synthesized by the dehydrogenation and fluorination of polycyclic aromatic hydrocarbon such...
Infection classification is the key for choosing the proper treatment plans. Early determination of the causative agents is critical for disease control. Host responses analysis can detect variform and sensitive host inflammatory responses to ascertain the presence and type of the infection. However, traditional host‐derived inflammatory indicators are insufficient for clinical infection classification...
Earth‐abundant layered tungsten disulfide (WS2) is a well‐known electrocatalyst for acidic hydrogen evolution, but it becomes rather sluggish for alkaline hydrogen or oxygen evolution due to the low‐density edge sites, poor conductivity, and unfavorable water dissociation behavior. Here, an interfacial engineering strategy to construct an efficient bifunctional electrocatalyst by in situ growing N‐doped...
Luminescent Janus nanoparticles refer to a special category of Janus‐based nanomaterials that not only exhibit dual‐asymmetric surface nature but also attractive optical properties. The introduction of luminescence has endowed conventional Janus nanoparticles with many alluring light‐responsive functionalities and broadens their applications in imaging, sensing, nanomotors, photo‐based therapy, etc...
Employing low‐dimensional perovskite has been proven to be a promising approach to enhance the efficiency and stability of perovskite solar cells. Here, thiopheniformamidine hydrochloride is introduced into CH3NH3PbI3‐based printable mesoscopic perovskite solar cells, to form 1D iodide lead thiophenamidine (TFPbI3) in situ. This judiciously designed low‐dimensional perovskite can effectively passivate...
Spontaneous Lattice Inversion
In article number 2200057, Zhiqiang Liu, Shenyuan Yang, Yong Zhang, Peng Gao, and co‐workers confirm the polarity of AlN on sapphire prepared by metal–organic chemical vapor deposition is not inherited from the nitrides/sapphire interface as widely accepted, instead, experiences a spontaneous polarity inversion. Furthermore, a vertical 2D electron gas is revealed at the...
The performance of nitride devices is strongly affected by their polarity. Understanding the polarity determination and evolution mechanism of polar wurtzite nitrides on nonpolar substrates is therefore critically important. This work confirms that the polarity of AlN on sapphire prepared by metal–organic chemical vapor deposition is not inherited from the nitrides/sapphire interface as widely accepted,...
In the past few decades, significant progress of the conventional upconversion nanoparticles (UCNPs) based nanoplatform has been achieved in many fields, and with the development of nanoscience and nanotechnology, more and more complex situations need a UCNPs based nanoplatform having multifunctions for specific multimodal or multiplexed applications. Through self‐assembly, different UCNPs or UCNPs...
Hydrogen peroxide (H2O2) is a mild but versatile oxidizing agent with extensive applications in bleaching, wastewater purification, medical treatment, and chemical synthesis. The state‐of‐art H2O2 production via anthraquinone oxidation is hardly considered a cost‐efficient and environment‐friendly process because it requires high energy input and generates hazardous organic wastes. Photocatalytic...
Carbon dots (CDs) are widely studied for years due to their unique luminescent properties and potential applications in many fields. However, aggregation‐caused quenching, monotonous emission modes, and unsustainable preparation impose restrictions on their performance and practical applications. Here, this work reports the facile synthesis of sustainable silk‐derived multimode emitting CDs with dispersed‐state...
Upconversion nanoparticles (UCNPs) have gone beyond traditional fluorophores in a lot of fields due to the outstanding features such as sharp excitation and emission bands, chemical and photo stability of high quality, low auto fluorescence, and high tissue permeation depth of the near‐infrared irradiation light used for excitation. Conventional UCNPs carrying single/multiple emissions under a single...
Herein, a supermolecular‐scale cage‐confinement pyrolysis strategy is proposed to build two dielectric electromagnetic wave absorbents, in which MoO2 nanoparticles are sandwiched uniformly between porous carbon shells and reduced graphene oxide (RGO). Both sandwich structures are derived from hybrid hydrogels doped by two different crosslinkers (with/without oxygen bridge), which can precisely confine...
In article number 2001686, Zhaofeng Chen, Meiling Wang, Jiadong Zhou, Yizhong Huang, and co‐workers realize uniform MoO2 clusters sandwiched between porous carbon shells and RGO support by a supermolecular cage‐confinement pyrolysis route. The introduction of crosslinkers into hydrogel precursors have remarkable adjustment effects on low‐frequency electromagnetic wave absorption traits.
Magnesium batteries have the potential to be a next generation battery with large capability and high safety, owing to the high abundance, great volumetric energy density, and reversible dendrite‐free capability of Mg anodes. However, the lack of a stable high‐voltage electrolyte, and the sluggish Mg‐ion diffusion in lattices and through interfaces limit the practical uses of Mg batteries. Herein,...
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