ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Qingkun Kong,Shuchao Jiang,Zhongyi Wang,Xin Xu,Ruiling Zhang,Guoqing Zhu,Junxia Yang,Peigeng Han,Runze Liu,Feng Hong,Nengchao Luo,Junsheng Chen,Bin Yang
Metal halide perovskite materials with excellent carrier transport properties have been regarded as a new class of catalysts with great application potential. However, their development is hampered by their instability in polar solvents and high temperatures. Herein, we report a solution-processed Cs2MoCl6 perovskite nanocrystals (NCs) capped with the Mo6+, showing high thermostability in polar solvents. Furthermore, the Pd single atoms (PdSA) can be anchored on the surface of Cs2MoCl6 NCs through the unique coordination structure of Pd–Cl sites, which exhibit excellent semihydrogenation of different alkyne derivatives with high selectivity at full conversion at room temperature. Moreover, the activity could be improved greatly under Xe lamp irradiation. Detailed experimental characterization and DFT calculations indicate the improved activity under light illumination is due to the synergistic effect of photo-to-heat conversion and photoinduced electron transfer from Cs2MoCl6 to PdSA, which facilitates the activation of the C≡C group. This work not only provides a new catalyst for high selective semihydrogenation of alkyne derivatives but also opens a new avenue for metal halides as photothermal catalysts.
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BMEMat
·
2025
·
IF 15.5
Wenkui Mo,Zeyu Liang,Bo Zhang,Lin Xiao,Xun Liu,Zhigao Yi,Shangzhi Xie,Qiyue Wang,Liang Shi,Taobo Luo,Feng Li,Leilei Wu,Yuanzhe Piao,Fangyuan Li,Jian Zeng,Daishun Ling
Early, non-invasive detection of esophageal cancer at sub-millimeter resolution is critical for tailoring precise therapeutic strategies. While ultra-high-field (UHF) magnetic resonance imaging (MRI) offers exceptional spatial resolution, the lack of optimized contrast agents capable of enhancing sensitivity for detecting microscopic tumors remains a significant challenge. Here, we report a cyclo-RGD peptide-conjugated antiferromagnetic nanoparticle (RANP) as a novel targeted T 1 contrast agent, specifically designed to improve in vivo imaging of esophageal tumors at the micrometer scale. The RANP integrates an antiferromagnetic core with low magnetization, minimizing T 2 decaying effects, while the cyclo-RGD peptide enhances its targeting ability by specifically binding to integrin α v β 3 , a biomarker highly expressed on tumor vasculature. This targeted conjugation improves the probe's selective accumulation at the tumor site and facilitates superior T 1 relaxation of water protons. Under 9 T MRI conditions, the RANP exhibits an r 1 value of 1.88 mM −1 s −1 and a low r 2/ r 1 ratio of 1.84, enabling the detection of primary esophageal tumors as small as 0.8 mm. This study significantly advances the sensitivity of current imaging techniques, pushing the detection limit of in vivo esophageal cancer diagnosis into the sub-millimeter range. Our results demonstrate the promising potential of RANP-enhanced UHF MRI for early detection, monitoring, and therapeutic intervention in esophageal cancer, offering a powerful tool for more effective clinical management.
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Huan Tian,Feng-Lei Jiang
Perovskite nanocrystals (NCs) exhibit intrinsic chemical instability due to their ionic nature. This property renders them susceptible to structural degradation and optical performance deterioration upon exposure to various cations (both inorganic and organic ions). For instance, Cs+ can induce phase transformation and photoluminescence quenching in the CsPbBr3 NCs. In this work, we found that externally introduced metal cations exert diverse effects (classified as three types) on the structure and optical properties of CsPbBr3 NCs. Notably, certain cations, such as Zn2+ and Cd2+, can bind to the surface and shield nanocrystals against the detrimental effects of exogenous cations. The protection effects were observed by both optical spectroscopy and transmission electron microscopy. Pretreatment with both ZnBr2 and CdBr2 significantly enhances the resistance of CsPbBr3 NCs to structurally or optically detrimental exogenous cations (Cs+). Moreover, with didodecyldimethylammonium bromide (DDAB) simultaneously incorporated in this pretreatment, the pretreated CsPbBr3 NCs exhibit enhanced resistance to polar solvents (e.g., ethanol), manifesting as keeping stable and bright even when exposed to 20% (volume percentage) of ethanol. These three components (ZnBr2, CdBr2, and DDAB) exhibit complementary functions for chemical stability. This stability-preserving strategy is expected to enhance the robustness of perovskite NCs against complex chemical conditions encountered during the device fabrication process (solution processing and interlayer interface engineering) and operating environments.
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ACS Nano
·
2026
·
IF 17.3
Xiangda Deng,Wenxin Yang,Tianmin Wu
CuInS2 quantum dots (CIS QDs), with tunable photoluminescence spanning from the visible to near-infrared (NIR) region, hold significant potential for consumer electronics and bioimaging due to their favorable photophysical properties and absence of toxic elements. However, their intrinsic lack of short-wavelength emission has hindered their use in white light-emitting applications. Herein, we report a facile synthesis of zinc–acetate–oleylamine (Zn–Ac–OAm) and oleylamine (OAm)-coencapsulated CIS/ZnS QDs that deliver full-spectrum sunlight-like emissions, characterized by a distinct 455 nm peak and an ultrabroad full width at half-maximum (fwhm) of 241 nm. The Zn–Ac–OAm emitter produces blue-green fluorescence, effectively compensating for the short-wavelength deficiency of the CIS/ZnS QDs. More importantly, strong interactions between Zn–Ac–OAm and CIS/ZnS QDs enable efficient energy transfer within coencapsulated structures. As a proof of concept, white light-emitting diodes (WLEDs) fabricated using these coencapsulated CIS/ZnS QDs exhibit excellent photophysical performance, achieving a high color rendering index (CRI) of 92.1 and external quantum efficiency (EQE) of 7.2%. This coencapsulation strategy, together with the elucidated photophysical mechanisms, provides viable pathways for extending the application of long-wavelength-emitting nanomaterials in next-generation lighting and display technologies.
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ACS Applied Optical Materials
·
2026
·
IF 3.4
Shichao Rao,Wentao Niu,Zhongwei Man,Xiulin Xie,Zhe Yin,Yue Qin,Shuaibing Wang,Ouyang Lin,Aiwei Tang
The advancement of environmentally benign I–III–VI colloidal quantum dots (QDs) has established a promising materials platform to replace cadmium-based counterparts. However, in practical device architectures, especially blue-emitting devices, abundant surface nonradiative recombination centers and imbalanced carrier injection often lead to suboptimal device performance, thereby hindering their deployment in display technologies. Herein, we employ a zinc iodide (ZnI2) post-treatment for the Cu–Ga–Zn–S (CGZS) QDs film strategy, effectively passivating surface defects and nonradiative sites, thereby enhancing device performance. The treated QDs facilitate the formation of an interface dipole, which effectively elevates the overall energy levels of the QDs while simultaneously reducing the hole injection barrier, leading to an enhanced hole injection efficiency. Working in concert, these effects facilitate balanced carrier injection and optimize exciton recombination, thereby boosting the device efficiency and operational stability. Consequently, the peak external quantum efficiency (EQE) exhibits a favorable improvement, increasing from 1.01% in the pristine device to 1.90% after treatment. This work offers an effective approach to achieving balanced carrier injection in quantum-dot light-emitting diodes (QLEDs) and establishes a solid foundation for the development of high-performance, cadmium-free, blue-emitting QLEDs.
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ACS Applied Nano Materials
·
2026
·
IF 5.8
Meidan Que,Xiangwei Bai,Tengjiao Xue,Ziang Liu,Jiaojiao Zheng,Xun Sun,Jun Xu
Barium titanate (BaTiO3) exhibits high chemical stability; however, the relatively rapid recombination of charge carriers severely limits its photocatalytic performance. Meanwhile, electrocatalysis facilitates charge transport by generating a spontaneously polarized electric field, effectively suppressing charge carrier recombination, but the performance of conventional ferroelectric catalysts is inherently constrained by their low surface piezopotential. In this study, a piezo-photocatalytic system triggered by ultrasonic vibration is reported, based on BaTiO3 nanobats. The BaTiO3 structure resembles a nanobat, featuring a thicker lower cylindrical body (∼35 nm diameter) and a thinner upper section (∼20 nm diameter) with a total length of about 250 nm. It can generate a piezo-potential as high as 1.2 V through COMSOL finite element simulation. Under mild vibration, the BaTiO3 nanobats exhibit superior piezo-photocatalytic performance, converting CO2 into CO with a maximum yield of 101.18 μmol·g–1·h–1. The yield is approximately five times higher than that achieved with ultraviolet light irradiation alone. Furthermore, theoretical calculations reveal that the adsorption and desorption of intermediates (*COOH, *CO) on BaTiO3 can be regulated by applying different strains. The piezo-photocatalytic CO2 reduction reaction opens an avenue beyond conventional photocatalysis, expanding energy utilization to pave the way for carbon neutrality.
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MATERIALS & DESIGN
·
2026
·
IF 8.2
Dongyang Huang,Peirong Liu,Peng Huang,Yubing Han,Chang Xue,Mengying Zhang,Weijia Wen,Tong-Yi Zhang,Bingpu Zhou,Jinbo Wu
Dielectric elastomers (DEs), as a class of artificial muscle materials, possess broad application in actuators, biomimetic structures, and soft robotics. However, their practical implementation is hindered by high driving voltages requirements and limited functionality. Strategies such as tuning polymer network architectures and introducing fillers have been explored to enhance performance, but experimentally identifying optimal parameters is time-consuming and labor-intensive. Artificial intelligence offers new opportunities to address these challenges, with tools such as artificial neural networks significantly accelerating the design processes of materials. In this study, we employed deep learning and follow the core idea of active learning for model iteration to predict fluorescent DEs with potentially high actuation performance. A predictive model was trained using 10 sets of pre-experimental data and 117 sets of data from an database. Guided by the predictions, we selected appropriate materials and fabrication pathways to synthesize a high-performance DE with dual actuation–fluorescence functionality. The resulting DE achieved an in-plane actuation strain of 101.5% under an electric field of 6 kV/mm, significantly reducing the required driving field and voltage. A soft biomimetic insect fabricated from the optimized fluorescent DE demonstrated directional crawling, showing potential for applications such as task execution in environments unsuitable for humans.
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Materials
·
2026
·Vol. 19
·期 3
·618
·
IF 3.7
Hui Guo,Haoting Huang,Shijian Shi,Qinghua Sun,Jinping Sun,Kang Liu,Qiang Zhu,Peng Zhang
Direct ink writing (DIW) has emerged as a promising method for fabricating flexible electronics. Copper nanowires are a key material for the conductive inks required for this technology. However, copper nanowires suffer from significant challenges, including low aspect ratios, poor oxidation resistance, and difficulty in printing. In this study, a liquid-phase reduction method was used to synthesize copper nanowires with a high aspect ratio (up to 2884) and excellent oxidation resistance. The conductive ink was prepared using ethylene glycol, isopropanolamine (MIPA), and ethanol as solvents. Rheological dynamics simulations were used to investigate the influence of printing parameters on ink printing accuracy, ultimately achieving precise control of the printing process. High-precision copper nanowire flexible circuits with a low resistivity of 2.11 μΩ·cm were fabricated under thermal sintering conditions using the DIW method. These circuits exhibited excellent adhesion, flexural behavior, and water resistance, demonstrating significant practical significance for the low-cost fabrication of high-precision flexible electronic devices.
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ACS Nano
·
2026
·
IF 16
Kuo Sun,Ningxin Xiao,Shaojian Jiang,Kai Deng,You Xu,Ziqiang Wang,Liang Wang,Hongjie Yu,Hongjing Wang
Electrocatalytic alkynol semihydrogenation (EASH) represents a promising alternative to conventional alkenol production. However, it is plagued by severe overhydrogenation and a competitive hydrogen evolution reaction (HER). In this work, we synthesize a Pd3BiCx intermetallic carbide metallene (Pd3BiCx ene) as a high-performance electrocatalyst for the selective semihydrogenation of 2-methyl-3-butyn-2-ol (MBY). At −0.3 V vs RHE, the catalyst system achieves 94.1% conversion, 95.3% selectivity, and 90.4% Faradaic efficiency while maintaining long-term stability over 70 h. Mechanistic studies demonstrate that carbon doping induces synergistic p-d-p orbital hybridization among Pd, Bi, and C. This electronic structure modulation optimizes the adsorption energy of MBY while facilitating the desorption of 2-methyl-3-buten-2-ol (MBE). Furthermore, carbon doping kinetically hinders overhydrogenation by eliminating subsurface hydrogen species and increasing the energy barrier for the overhydrogenation step. Concurrently, this p-d-p hybridization stabilizes surface adsorbed hydrogen (H*ads), thereby promoting the hydrogenation pathway and suppressing the HER. This work establishes an effective catalyst design strategy for fabricating p-d-p orbital-hybridized intermetallic catalysts, offering an innovative approach for high-efficiency EASH.
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Nature Communications
·
2026
·
IF 18.1
Hu Xinge,Liu Jinjie,Zhu Zhijie,Liu Shuang,Wang Lei,Cheng Jianjun,Huang Xiong,Li Chaoran,Feng Kai,Zhou Yuxuan,Xu Yuqing,Feng Qianyue,Zhang Binbin,Chen Xiankai,Zhang Liang,Zhang Qingfeng,Wu Bo,Yin Jun,An Xingda,Zhang Xiao-Hong,He Le
Light-mediated electronic spin modulation possesses intriguing potentials for photochemistry, enabling on-demand customization of catalysts towards distinct reactions and catalytic requirements. However, the significant photobleaching of the transient spin transitions as well as their temporal mismatch with slower chemical reaction dynamics substantially hinders its applicability. Herein, we demonstrate light-driven steady-state and on-demand catalyst spin modulation that effectively activates plasmonic catalysis. The rapidly oscillating plasmonic electromagnetic near-field spin-polarizes a low-spin CoFe 2 O 4 catalyst and overcomes the photobleaching to produce stable high-spin states with astounding spin lifetimes >60 μs. The high-spin plasmonic catalyst effectively balances the tradeoff between spin polarization and carrier dynamics. For benchmark light-driven nitrate reduction catalysis, it achieves substantial photo-enhancement in ammonia production rate and selectivity as well as photocatalytic performance driven by sunlight, benefiting from polarization activation of nitrate reactant and preferential reaction pathway modulation. The highly generalized light-mediated strategy opens intriguing new avenues for on-demand and steady-state electronic spin engineering with profound implications for distinct disciplines.
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JOURNAL OF CATALYSIS
·
2026
·
IF 6
Jie Wang,Feng Gao,Jilei Lin,Chunjuan Zhang,Meiqing Shen,Linghui Kong,Gurong Shen
Ammonia is emerging as a promising carbon-free energy carrier. The electrocatalytic ammonia oxidation reaction (AOR), highly structure-sensitive, exhibits exceptional activity on Pt nanocubes (NCs) with (100) facets. Yet, synthesis methods employing metal carbonyl capping agents inevitably introduce residual metals, whose catalytic effects are often neglected. Here, Pt NCs synthesized with Mo(CO) 6 were found to contain trace Mo both in the bulk and at the surface. Surface Mo species, partially oxidized to MoO x , substantially modify the electronic structure of Pt(100), lowering activation barriers for rate-determining AOR steps and enhancing resistance to nitrogen poisoning. These effects collectively boost AOR performance, enabling a direct ammonia fuel cell with a Pt-154 anode to achieve a peak power density of 26.7 mW cm −2 . These results reveal the overlooked impact of capping-agent-derived contaminants in AOR and point to the deliberate incorporation of heterometallic modifiers as a viable strategy for advanced electrocatalyst design.
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Chemistry-Switzerland
·
2026
·Vol. 8
·期 3
·30
·
IF 2.6
Keyujia Zhong,Fang Lei,Shiqing Dang,Hongyang Zhang,Ying Shi,Haohong Chen
Perovskite quantum dots (PQDs) face significant performance limitations due to surface defects, which are not sufficiently addressed by conventional single-passivation methods. We introduce a dual-passivation strategy that synergistically combines bifunctional ligand 3-(N,N-dimethyloctadecylammonium)-propanesulfonate (SB3-18) treatment with silica coating to simultaneously passivate undercoordinated Pb2+ions and bromine vacancies in red-emitting CsPb(Br/I)3PQDs. This approach nearly triples the photoluminescence quantum yield (PLQY, from 23% to 58%). Systematic structural, morphlogical, binding energy, Fermi level and optical analyses confirm effective defect suppression and enhanced exciton luminescence. The dual-passivated sample QDs:SB3-18@SiO2also exhibit excellent environmental stability, retaining 85% of their initial emission after 30 min in air and exhibiting improved UV resistance. By combining the PQDs with a CGSO:Tb3+mechanoluminescent phosphor, a composite film is fabricated with bimodal optical response—color-selective photoluminescence under UV excitation and stress-activated green emission upon scratching. This work presents a robust route to high-performance PQDs and demonstrates their potential for advanced anticounterfeiting and smart optical applications.
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