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Peptide assemblies are promising nanomaterials, with their properties and technological applications being highly hinged on their supramolecular architectures. Here, how changing the chirality of the terminal charged residues of an amphiphilic hexapeptide sequence Ac‐I4K2‐NH2 gives rise to distinct nanostructures and supramolecular handedness is reported. Microscopic imaging and neutron scattering...
Peptide Supramolecular Handedness
In article number 2304424, Hai Xu, Jun Yang, Jiqian Wang, and co‐workers report how changing the chirality of the terminal charged residues of an amphiphilic hexapeptide sequence Ac‐I4K2‐NH2 gives rise to distinct nanostructures and supramolecular handedness. The formation of wide nanotubes arises from the co‐assembly of right‐ and left‐handed β‐strands while thin,...
H2O2‐fueled micromotors are state‐of‐the‐art mobile microreactors in environmental remediation. In this work, a magnetic FeOx@MnO2@SiO2 micromotor with multi‐functions is designed and demonstrated its catalytic performance in H2O2/peroxymonosulfate (PMS) activation for simultaneously sustained motion and organic degradation. Moreover, this work reveals the correlations between catalytic efficiency...
Catalytic Reactions
In article number 2207666, Xiaoguang Duan, Shaobin Wang, and co‐workers report on the application of well‐designated and multifunctional FeOx@MnO2@SiO2 micromotors as mobile microreactors for catalytic water purification. H2O2 is the fuel to generate oxygen bubble for propelling and peroxymonosulfate is the green oxidant to generate free radical species to realize the degradation...
The design of highly dispersed active sites of hollow materials and unique contact behavior with the components to be catalyzed provide infinite possibilities for exploring the limits of catalyst capacity. In this study, the synthesis strategy of highly open 3‐dimensional frame structure Prussian blue analogues (CoFe‐PBA) was explored through structure self‐transformation, which was jointly guided...
The slow kinetics and poor structural stability prevent transition metal selenides from being widely used in sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs). Herein, the “flower‐like” porous carbon anchored by Zn‐Mn binary selenides (ZMS@FC) composites are fabricated by selenizing the modified hierarchically metal‐organic frameworks. The 2D conductive hierarchically flakes’ abundant...
Two‐dimentional semiconductors have shown potential applications in multi‐bridge channel field‐effect transistors (MBC‐FETs) and complementary field‐effect transistors (C‐FETs) due to their atomic thickness, stackability, and excellent electrical properties. However, the exploration of MBC‐FET and C‐FET based on large‐scale 2D semiconductors is still lacking. Here, based on a reliable vertical stacking...
The electrochemical CO2 reduction reaction (CO2RR) has great potential in realizing carbon recycling while storing sustainable electricity as hydrocarbon fuels. However, it is still a challenge to enhance the selectivity of the CO2RR to single multi‐carbon (C2+) product, such as C2H4. Here, an effective method is proposed to improve C2H4 selectivity by inhibiting the production of the other competitive...
Highly efficient and mechanically durable photothermal materials are urgently needed for solar harvesting, but their development still remains challenging. Here, inspired by the hierarchically oriented architecture of natural spider silk, an ultrarobust liquid metals (LMs)/polymer composite is presented via dynamic crosslinking based on the unique mechanical deformable characteristic of LMs. Dynamically...
As emerging micro/nano‐scale devices, micro/nanomotors have been innovatively applied in the environmental and biomedical applications. In this paper, the recent advances of Mn‐based micro/nanomotors (Mn‐micro/nanomotors) in catalytic oxidation of organic contaminants and the mechanisms in decomposition of H2O2 (e.g., the generation of O2 bubbles and reactive oxygen species) are reviewed. The intrinsic...
The cover image shows the self‐assembly process of His‐containing helical peptide HH designed in article number 2003945 by Jiqian Wang, Jian R. Lu, Hai Xu and co‐workers. Cu2+ coordination drives the peptide folding and self‐assembly to form dimeric coiled coils with an out‐of‐register packing mode, and the dimers further grow into long nanofibers.
Peptide self‐assembly is fast evolving into a powerful method for the development of bio‐inspired nanomaterials with great potential for many applications, but it remains challenging to control the self‐assembling processes and nanostrucutres because of the intricate interplay of various non‐covalent interactions. A group of 28‐residue α‐helical peptides is designed including NN, NK, and HH that display...
2D transition metal dichalcogenides (TMDs) based photodetectors have shown great potential for the next generation optoelectronics. However, most of the reported MoS2 photodetectors function under the photogating effect originated from the charge‐trap mechanism, which is difficult for quantitative control. Such devices generally suffer from a poor compromise between response speed and responsivity...
In article number 1902528, Yongfeng Mei and co‐workers demonstrate a 3D tubular photodetector based on a rolled‐up molybdenum diselenide microtube to enhance the photoresponsibility of 2D materials. Such a tubular design could boost the efficiency of 2D materials–based photodetectors and hold great potential in the field of 3D optoelectronics.
Transition metal dichalcogenides, as a kind of 2D material, are suitable for near‐infrared to visible photodetection owing to the bandgaps ranging from 1.0 to 2.0 eV. However, limited light absorption restricts photoresponsivity due to the ultrathin thickness of 2D materials. 3D tubular structures offer a solution to solve the problem because of the light trapping effect which can enhance optical...
Two‐dimensional (2D) materials have attracted extensive research interest in academia due to their excellent electrochemical properties and broad application prospects. Among them, 2D transition metal carbides (Ti3C2Tx) show semiconductor characteristics and are studied widely. However, there are few academic reports on the use of 2D MXene materials as memristors. In this work, reported is a memristor...
Due to their advantages compared with planar structures, rolled‐up tubes have been applied in many fields, such as field‐effect transistors, compact capacitors, inductors, and integrative sensors. On the other hand, because of its perfect insulating nature, ultrahigh mechanical strength and atomic thickness property, 2D hexagonal boron nitride (h‐BN) is a very suitable material for rolled‐up memory...
Atomic thin transition‐metal dichalcogenides (TMDs) are considered as an emerging platform to build next‐generation semiconductor devices. However, to date most devices are still based on exfoliated TMD sheets on a micrometer scale. Here, a novel chemical vapor deposition synthesis strategy by introducing multilayer (ML) MoS2 islands to improve device performance is proposed. A four‐probe method is...
Recently, layered ultrathin 2D semiconductors, such as MoS2 and WSe2 are widely studied in nonvolatile memories because of their excellent electronic properties. Additionally, discrete 0D metallic nanocrystals and quantum dots (QDs) are considered to be outstanding charge‐trap materials. Here, a charge‐trap memory device based on a hybrid 0D CdSe QD–2D WSe2 structure is demonstrated. Specifically,...
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