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Janus hydrogels have promising applications in tendon healing and anti‐peritendinous adhesions. However, their complicated preparation methods, weak mechanical properties, and unstable adhesion interfaces have severely limited their application in suture‐free and high‐quality tendon healing. In this work, by controlling the interfacial distribution of free ‐COOH groups and cationic‐π structures on both sides of the hydrogels, a series of PZBA‐EGCG‐ALC Janus hydrogels with varying degrees of asymmetric properties are successfully prepared using a simple and efficient one‐step synthesis method. The tensile strength and elongation at the break of the Janus hydrogel are as high as 0.51 ± 0.04 MPa and 922.89 ± 28.59%. In addition, the Janus hydrogel can achieve a high difference in adhesion strength (nearly 20‐fold) while maintaining a strong adhesion strength on their bottom sides (up to 524.8 ± 33.1 J m−2). In the spatial dimension, its excellent mechanical compliance and one‐sided adhesion behavior can provide effective mechanical support and physical barriers for the injured Achilles tendons. More importantly, the Janus hydrogel can also minimize early inflammation generation in the time dimension via its ROS‐responsive PZBA‐EGCG prodrug macromolecules. This study provided a more effective and convenient suture‐free strategy for constructing Janus hydrogels to promote high‐quality tendon healing. This study establishes a simple and efficient one‐step synthesis method to prepare Janus hydrogels for suture‐free and high‐quality tendon healing. The Janus hydrogels with time‐space regulating properties can minimize early tendon inflammation to promote tendon healing, while providing effective mechanical support and physical barriers for injured tendons to prevent postoperative adhesions.

LiNi0.9Mn0.1O2 (LNM91) cathode has attracted significant attention in lithium‐ion batteries (LIBs) due to its high capacity and low cost. However, its poor electrochemical performance and thermal stability hinder its application in electric vehicles. To overcome these limitations, this study proposes a novel one‐step solid‐state method for doping Al3+ and Mg2+ into the Ni and Li sites of LNM91, respectively, by directly mixing hydroxide precursors followed by calcination. Unlike the pristine cathode, which exhibits obvious cracking, the resultant Al/Mg codoped LNM91 maintains its structural integrity well after 100 cycles. The capacity retention significantly increases from 78.5 to 93.0% after 100 cycles at 0.5 C. Mechanistic studies reveal that Al3+ stabilizes the oxygen framework through strong AlO bonds, while Mg2+ suppresses Li+/Ni2+ disorder via electrostatic repulsion. Their synergistic effect mitigates the detrimental H2‐H3 phase transition and microcrack propagation, thereby bolstering rate capability and cycling performance. These results highlight the significance of Al/Mg codoping as a promising approach for developing high‐performance cobalt‐free and nickel‐rich cathodes for LIBs. The Al/Mg codoped LiNi0.9Mn0.1O2 cathode, prepared by one‐step lithiation process, demonstrates enhanced structural stability and cycling performance for lithium‐ion batteries.

The synergy resulting from the high conductivity of graphene and catalytic properties of metal nanoparticle has been a resource to improve the activity and functionality of electrochemical sensors. This work focuses on the simultaneous synthesis of copper nanoparticles (CuNPs) and laser‐induced graphene (LIG) derived from paper, through a one‐step laser processing approach. A chromatography paper substrate with drop‐casted copper sulfate is used for the fabrication of this hybrid material, characterized in terms of its morphological, chemical, and conductive properties. Appealing conductive properties are achieved, with sheet resistance of 170 Ω sq−1 being reached, while chemical characterization confirms the simultaneous synthesis of the conductive carbon electrode material and metallic copper nanostructures. Using optimized laser synthesis and patterning conditions, LIG/CuNPs‐based working electrodes are fabricated within a three‐electrode planar cell, and their electrochemical performance is assessed against pristine LIG electrodes, demonstrating good electron transfer kinetics appropriate for electrochemical sensing. The sensor's ability to detect glucose through a non‐enzymatic route is optimized, to assure good sensing performance in standard samples and in artificial sweat complex matrix. This work reports a one‐step method for the simultaneous synthesis of laser‐induced graphene/copper nanoparticle composite structures, using paper as a graphene precursor, modified with copper sulfate as the source of metal ions. The resulting composite structures are used to develop a sensitive and low limit of detection nonenzymatic glucose sensor for sweat glucose monitoring.

High aspect ratio TiO2 nanoflakes are synthesized by a one‐step modified surface hydrolysis method. Surface morphology and physical dimensions are characterized using scanning electron microscopy, laser diffraction analysis, and transmission electron microscopy. Microsized flakes having a thickness ≈40 nm are successfully synthesized by spreading an oil phase consisting of titanium tetraisopropoxide and a low surface tension hydrocarbon on the surface of water. Pure anatase phase crystalline titania nanoflakes are obtained by calcining at 400 °C without changing the shape and thickness of flakes. Relatively higher specific surface area (2–6 times) and less crystal defects enhance photocatalytic activities of nanoflakes due to more surface reaction sites and the suppression of fast recombination. By performing dye degradation under ultraviolet illumination, titania nanoflakes exhibit the higher photocatalytic efficiency over the commercial photocatalyst, Degussa P25. As far as it is known, this method is the most efficient and cost effective process for making low‐dimensional nanomaterials in a continuous manner. These titania flakes can be easily separated from the treated water by simply sedimentation or filtration and therefore is very suitable for water purification application. High aspect ratio TiO2 nanoflakes are synthesized by a one‐step modified surface hydrolysis method. The large surface tension difference between the bulk water and an oil phase consisting of titanium alkoxide and hydrocarbon results in the formation of microsized flakes with a thickness ≈40 nm.

With the rapid development of social economy, problems such as volatile organic compound (VOC) pollution and the excessive consumption of global petroleum resources have become increasingly prominent. People are beginning to realize that these problems not only affect the ecological environment, but also hinder the development of the organic polymer material industry based on raw fossil materials. Therefore, the modification and application of bio-based materials are of theoretical and practical significance. In this study, a series of vegetable oil-based acrylate prepolymers were synthesized by one-step acrylation using palm oil, olive oil, peanut oil, rapeseed oil, corn oil, canola oil, and grapeseed oil as raw materials, and the effect of different double bond contents on the product structure and grafting rate was investigated. Furthermore, the as-prepared vegetable oil-based acrylate prepolymers, polyurethane acrylate (PUA-2665), trimethylolpropane triacrylate (TMPTA), and photoinitiator (PI-1173) were mixed thoroughly to prepare ultraviolet (UV)-curable films. The effect of different grafting numbers on the properties of these films was investigated. The results showed that as the degree of unsaturation increased, the acrylate grafting number and the cross-linking density increased, although the acrylation (grafting reaction) rate decreased. The reason was mainly because increasing the double bond content could accelerate the reaction rate, while the grafted acrylic groups had a steric hindrance effect to prevent the adjacent double bonds from participating in the reaction. Furthermore, the increase in grafting number brought about the increase in the structural functionality of prepolymers and the cross-linking density of cured films, which led to the enhancement in the thermal (glass transition temperature) and mechanical (tensile strength, Young’s modulus) properties of the cured films.

Considering the emergence of severe electromagnetic interference problems, it is vital to develop electromagnetic (EM) wave absorbing materials with high dielectric, magnetic loss and optimized impedance matching. However, realizing the synergistic dielectric and magnetic losses in a single phase material is still a challenge. Herein, high entropy (HE) rare earth hexaborides (REB 6 ) powders with coupling of dielectric and magnetic losses were designed and successfully synthesized through a facial one-step boron carbide reduction method, and the effects of high entropy borates intermedia phases on the EM wave absorption properties were investigated. Five HE REB 6 ceramics including (Ce 0.2 Y 0.2 Sm 0.2 Er 0.2 Yb 0.2 )B 6 , (Ce 0.2 Eu 0.2 Sm 0.2 Er 0.2 Yb 0.2 )B 6 , (Ce 0.2 Y 0.2 Eu 0.2 Er 0.2 Yb 0.2 )B 6 , (Ce 0.2 Y 0.2 Sm 0.2 Eu 0.2 Yb 0.2 )B 6 , and (Nd 0.2 Y 0.2 Sm 0.2 Eu 0.2 Yb 0.2 )B 6 possess CsCl-type cubic crystal structure, and their theoretical densities range from 4.84 to 5.25 g/cm 3 . (Ce 0.2 Y 0.2 Sm 0.2 Er 0.2 Yb 0.2 )B 6 powders with the average particle size of 1.86 µm were found to possess the best EM wave absorption properties among these hexaborides. The RL min value of (Ce 0.2 Y 0.2 Sm 0.2 Er 0.2 Yb 0.2 )B 6 reaches −33.4 dB at 11.5 GHz at thickness of 2 mm; meanwhile, the optimized effective absorption bandwidth ( E AB ) is 3.9 GHz from 13.6 to 17.5 GHz with a thickness of 1.5 mm. The introduction of HE REBO 3 (RE = Ce, Y, Sm, Eu, Er, Yb) as intermediate phase will give rise to the mismatching impedance, which will further lead to the reduction of reflection loss. Intriguingly, the HEREB 6 /HEREBO 3 still possess wide effective absorption bandwidth of 4.1 GHz with the relative low thickness of 1.7 mm. Considering the better stability, low density, and good EM wave absorption properties, HE REB 6 ceramics are promising as a new type of EM wave absorbing materials.

In this work, birch bark (BB) was used for the first time to prepare porous biochars via different one-step methods including direct activation (BBB) and N-doping co-activation (N-BBB). The specific surface area and total pore volume of BBB and N-BBB were 2502.3 and 2292.7 m2/g, and 1.1389 and 1.0356 cm3/g, respectively. When removing synthetic methyl orange (MO) dye and heavy metal Cr6+, both BBB and N-BBB showed excellent treatment ability. The maximum adsorption capacities of BBB and N-BBB were 836.9 and 858.3 mg/g for MO, and 141.1 and 169.1 mg/g for Cr6+, respectively, which were higher than most previously reported biochar adsorbents. The probable adsorption mechanisms, including pore filling, π–π interaction, H-bond interaction, and electrostatic attraction, supported the biochars’ demonstrated high performance. In addition, after five recycles, the removal rates remained above 80%, which showed the high stability of the biochars. This work verified the feasibility of the one-step N-doping co-activation method to prepare high-performance biochars, and two kinds of biochars with excellent performance (BBB and N-BBB) were prepared. More importantly, this method provides new directions and ideas for the development and utilization of other biomasses.

In this report, we demonstrate a simple chemical bath deposition approach for the synthesis of layered SnS nanosheets （typically 6 nm or -10 layers thick） at very low temperature （40℃）. We successfully synthesized SnS/C hybrid electrodes using a solution-based carbon precursor coating with subsequent carbonization strategy. Our data showed that the ultrathin carbon shell was critical to the cycling stability of the SnS electrodes. As a result, the as-prepared binder-free SnS/C electrodes showed excellent performance as sodium ion battery anodes. Specifically, the SnS/C anodes delivered a reversible capacity as high as 792 mAh-g-1 after 100 cycles at a current density of 100 mA·g-1 They also had superior rate capability （431 mAh.g-1 at 3,000 mA.g-1） and stable long-term cycling performance under a high current density （345 mAh-g-1 after 500 cycles at 3 A.g-1）. Our approach opens up a new route to synthesize SnS-based hybrid materials at low temperatures for energy storage and other applications. Our process will be particularly useful for chalcogenide matrix materials that are sensitive to high temperatures during solution synthesis.

In this work, we report the synthesis method of carbon quantum dots (CDs) using the one-step method for fast and effective metal ion determination. Ascorbic acid was used as an inexpensive and environmentally friendly precursor. High-pressure and high-temperature reactors were used for this purpose. Microscopic characterization revealed the size of CDs was in the range of 2–6 nm and they had an ordered structure. The photoluminescence properties of the CDs depend on the process temperature, and we obtained the highest PL spectra for 6 h of hydrothermal reaction. The maximum emission spectra depend poorly on synthesis time. Further characterization shows that CDs are a good contender for sensing Fe3+ in aqueous systems and can detect concentrations up to 0.49 ppm. The emission spectra efficiency was enhanced by up to 200% with synthesis time.

A new method is presented for the one-step synthesis and real-time monitoring of iridium(III) complex-functionalized AuNPs from the precursor gold(III) chloride (AuCl 3 ). The functionalized AuNPs with an average size of 8 − 20 nm were obtained by the reduction of Au 3+ ions by the alkyne group of iridium(III) complexes, which was accompanied by the anchoring iridium(III) complexes on the surface of the nanoparticles. Meanwhile, the luminescence of the iridium(III) complexes was effectively quenched due to distance-dependent fluorescence quenching by AuNPs, thereby enabling luminescence monitoring of the formation process of the functionalized AuNPs and obtaining scattering information and spectral information in real time. Moreover, this method was applied to the determination of Au 3+ ions in buffer with a limit of detection of 0.38 μM at 700 nm in luminescence mode, while the detection limit for absorbance was 10.04 μM. Importantly, the multimodal detection strategy alleviates interference from other metal ions. Furthermore, the iridium(III) alkyne complexes were capable of imaging mitochondrial Au 3+ ions in living cells. Taken together, this work opens a new avenue for convenient synthesis and monitoring formation of functionalized AuNPs, and also provides a tool for selective determination of Au 3+ ions in solution and in cellulo . Graphical abstract