Nature Communications
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2025
·Vol. 16
·期 1
·1-13
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IF 15.7
Guan Jie,Ma Jianhang,Zhou Likuan,Zou Yihao,Ye Lingbin,Hou Wenjun,Zhang Pan-ke,Dai Xingliang,Zhang Hao,Talapin Dmitri V.,Wang Yuanyuan
Optical patterning of quantum dots is essential for the fabrication of light-emitting diodes displays. However, current patterning methods either require inert environments or compromised quantum dots optical properties under ambient conditions. Here, we report a photoresist-free strategy enabling direct quantum dot patterning in air by using triphenylphosphine, a cost-effective, commercially available molecule that functions simultaneously as a surface ligand, photoinitiator, and oxidation protector. Under light exposure, triphenylphosphine reacts with atmospheric oxygen to trigger solubility changes, allowing precise patterning with resolutions up to 9534 dpi. The resulting devices exhibit external quantum efficiencies of 21.6% (blue), 25.6% (green), and 20.2% (red). We further demonstrate full-color active-matrix quantum dots light-emitting diodes displays by integrating the patterned red, green and blue quantum dots with thin-film transistor backplanes. This work offers a scalable, non-destructive, and environmentally compatible patterning solution for industrial display technologies.
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Surfaces and Interfaces
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2025
·
IF 6.3
Yongqin Chen,Yonglei Xing,Xiaoyong Jin,Yage Peng,Gang Ni
In this work, cobalt selenide (CoSe) catalysts featuring abundant reactive sites and selenium vacancies were prepared through a solvothermal route and utilized, in activating peroxymonosulfate (PMS) to degrade sulfadimidine (SMZ). The catalyst demonstrated excellent catalytic efficiency, stability, and potential for practical applications, achieving 90–100% degradation of various organic pollutants, including tetracycline, bisphenol F, and carbamazepine. Mechanistic investigations revealed that both Co and Se species worked synergistically to promote PMS activation, which was pivotal in improving the SMZ degradation efficiency. Specifically, low-valent selenium species and Se vacancies accelerated Co 2+ /Co 3+ redox transitions and facilitated ROS production, ultimately enhancing the PMS activation performance. Radical scavenging tests combined with EPR characterization confirmed that 1 O 2 was the primary reactive species involved, indicating that non-radical pathways were primarily responsible for SMZ degradation. Furthermore, quantitative structure–activity relationship (QSAR) analysis revealed that the environmental toxicity of SMZ and its main degradation products was significantly reduced after treatment. Overall, this study presents a novel and efficient PMS activator based on CoSe and elucidates its catalytic mechanism, offering new insights and technological support for the advanced treatment of antibiotic-containing wastewater.
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Small
·
2025
·
IF 12.1
Xiaobo Han,Hengbin Zhao,Huixuan Wang,Qingchun Wang,Fei Ruan,Weixiang Shang,Jinxiao Bao,Yuwei Ma
The construction of step-scheme (S-scheme) heterojunctions by integrating single-component semiconductors with strategic cocatalyst loading facilitates enhanced charge transfer, improving visible-light-driven photocatalytic hydrogen evolution efficiency. In this work, In 2 O 3 /CdS/NiSe 2 and In 2 O 3 /NiSe 2 /CdS heterostructures are synthesized through sequential deposition of CdS and NiSe 2 onto In 2 O 3 nanosheets with different loading orders. Combined analysis using in situ irradiated X-ray photoelectron spectroscopy and electron paramagnetic resonance (EPR) confirms the S-scheme charge transfer pathway in both In 2 O 3 /CdS and In 2 O 3 /NiSe 2 /CdS systems. The results show that the In 2 O 3 /CdS/NiSe 2 heterostructure exhibits three charge transfer pathways, while In 2 O 3 /NiSe 2 /CdS possesses only one. Charge density difference analysis and photoelectrochemical measurements indicate that, compared to In 2 O 3 /NiSe 2 /CdS, the multiple charge transfer pathways in In 2 O 3 /CdS/NiSe 2 significantly enhance photoinduced electron migration efficiency. According to Gibbs free energy calculations, Ni in In 2 O 3 /CdS/NiSe 2 resides at the outermost layer and exhibits the weakest hydrogen adsorption free energy, enabling it to serve as an additional active site that facilitates hydrogen desorption and enhances hydrogen evolution activity. Owing to these synergistic effects, the In 2 O 3 /0.8CdS/NiSe 2 -5 photocatalyst achieves a hydrogen evolution rate of 16,797.1 µmol g −1 under visible light-nearly four times higher than that of In 2 O 3 /NiSe 2 -5/0.8CdS (3,902.4 µmol g −1 ). This study offers theoretical and practical guidance for designing ternary heterojunctions with efficient multiple charge transfer pathways.
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Laser & Photonics Reviews
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2025
·
IF 10
Xuting Chen,Linqi Chen,Yuan Jiang,Yijing Wang,Hongbing Li,Jingzhou Li,Xinjie Li,Zeyi Wang,Hongxing Dong,Long Zhang
Fluorescent antennas (FAs) serve as promising optical concentrators for optical wireless communication (OWC) by overcoming the Étendue limit. Quantum dots-polymer nanocomposites exhibit superior optical properties for FAs. However, the poor chemical affinity between the surface ligands of quantum dots (QDs) and the polar functional groups in polymer matrices reduces interfacial compatibility, triggering ligand desorption and interparticle aggregation during photopolymerization. These effects severely degrade the photoluminescence efficiency and long-term stability, thus limiting the practical application of polymer-based FAs. Herein, a high-performance nanocomposite is demonstrated by embedding ODPA-passivated CdSe/CdS QDs into a polyurethane acrylate (PUA) matrix through doctor-blade coating and photopolymerization. Molecular dynamics simulations and density functional theory calculations reveal that QDs improve interfacial compatibility with PUA matrix through hydrogen-bond crosslinking between surface ligands and PUA hard segments, along with alkyl chain-induced plasticization of soft segments. Optimizing the QD concentration results in nanocomposites with a near-unity photoluminescence quantum yield of 99.15% and enhanced environmental stability. The sandwich-structured FA demonstrates a −3 dB bandwidth of 8.6 MHz, a 154 Mbps data rate using orthogonal frequency division multiplexing (OFDM) modulation. This work presents a readily processable nanocomposite system with high efficiency and stability, advancing OWC applications in terrestrial and underwater environments.
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ACS Applied Optical Materials
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2025
·
IF 3.8
Kai-Zheng Song,Shan-Ze Li,Feng-Lei Jiang
Eco-friendly indium phosphide (InP) quantum dots (QDs) with excellent optical properties are highly demanded for advanced display and lighting technologies. This work demonstrated a mild postsynthetic treatment method to enhance the optical properties of InP cores by utilizing lithium hexafluorophosphate (LiPF6) to remove POx– species from the core surfaces at nucleation temperature. This method avoided the use of toxic and corrosive hydrofluoric acid. The effects of LiPF6 dosage and treatment duration on the optical properties of InP cores were systematically investigated. After LiPF6 treatment, the photoluminescence quantum yield (PLQY) of the InP cores increased dramatically from <1 to 21%, with the removal of POx– species confirmed by XPS and FTIR analyses. Furthermore, the impact of LiPF6 introduction prior to shell coating on the properties of core–shell QDs with ZnSeS/ZnS shells was investigated. The introduction of LiPF6 induced a controlled emission red shift (from 614 to 620 nm) while dramatically boosting the PLQY from 62 to 90%. The fabricated light-emitting diode (LED), employing InP(F)/ZnSeS/ZnS QDs as color converters, achieved a maximum power efficiency of 1.11 lm W–1 with CIE coordinates of (0.702, 0.293). This work provides an efficient approach to optimize InP-based QDs for high-performance optoelectronic applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
He Zhang,Zhanxiang Yin,Yaqiang Wang,Yi Wu,Youbo Xing,Xin Guo
Low carrier concentration and mobility have been the primary obstructions to improving the electrical transport properties of BiCuSeO thermoelectric oxides , particularly for excessively low carrier mobility , heavily impeding the development of its thermoelectric performance. Herein, high-pressure technology is adopted to tune the electronic structure motivating carrier mobility , incorporated with the contribution of Cu deficiency to carrier concentration, achieving high carrier mobility of 25 cm 2 V −1 s −1 and outstanding electrical conductivity of 2834.57 Sm −1 . Moreover, high densities of grain boundaries and dislocations are introduced by high pressure, accompanied by the effect of Cu vacancies, suppressing phonon transport and depressing lattice thermal conductivity , finally realizing an acceptable zT of 0.56 at 823 K in BiCu 0.97 SeO. This work demonstrates that high pressure can be compatible with other methods, realizing synergetic optimizations in coupled parameters and thus improving thermoelectric performance in BiCuSeO oxides.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yixing Luo,Qingsheng Wu,Yongqing Fu,Ming Wen
Built-in electric field (BIEF) in metallic chalcogenide heterostructures has recently attracted significant attention due to its special interfacial electronic structure and appropriate reaction microenvironment for improving electrocatalytic performance. However, constituent dissolution issues and inferior stability of transition metal selenide heterostructure severely inhibit the formed BIEF to support long-term high-activities for ORR and OER toward zinc-air battery (ZAB). Herein, BIEF was established in CoSe 2 -FeSe 2 hetero-nanostructures encapsulated by N-doped carbon shell on N-doped honeycomb carbon (CoSe 2 -FeSe 2 @NC/NHC) for achieving long-term efficient oxygen electrocatalysis. DFT calculation results confirm that the durable BIEF formed in CoSe 2 -FeSe 2 @NC on NHC not only optimizes interfacial electronic structures and surface adsorption energy, but also offers numerous hyperactive interfacial sites during electrocatalytic reactions. Consequently, the designed CoSe 2 -FeSe 2 @NC/NHC exhibits remarkable performance for both ORR ( E 1/2 = 0.87 V) and OER ( E j = 10 mA cm-2 = 1.54 V), enabling superior peak power density and long-term charging-discharging stability in both liquid-state ZAB (184.3 mW cm −2 and 1350 cycles) and flexible all-solid-state ZAB (61.4 mW cm −2 and 195 cycles). The high durability of BIEF in the core–shell hetero-nanostructured electrocatalyst is crucial for long-term highly-active oxygen electrocatalysis in ZAB.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Hao Guo,Yu Liu,Henglong Ren,Yanrui Hao,Liping Peng,Wu Yang
Metal-organic framework (MOF) materials, as electrodes for supercapacitors, have promising applications, but their conductivity and capacitance performance are critical limitations to their practical use. By constructing rational structures and incorporating various active materials, the conductivity and capacitance performance of MOF-derived materials can be significantly enhanced. This study presented the application of trimetallic selenide electrode materials V a -ZnSe/NiCoSe 2 in supercapacitors prepared through sequential Ni 2 + etching, selenization and NaBH 4 reduction of ZIF-8@ZIF-67 core-shell structure. The results exhibited that an appropriate number of Se vacancy defects effectively enhanced the specific capacitance and conductivity of the material, thereby improving the performance of supercapacitors. When NaBH 4 concentration was 1 M, the obtained V 1 -ZnSe/NiCoSe 2 electrode material presented excellent supercapacitor performance with a maximum specific capacitance (capacity) of 1563 F·g −1 (705.5 C . g −1 ) at a current density of 1 A·g −1 as well as high rate capability and long-term cycling stability. Additionally, the assembled V 1 -ZnSe/NiCoSe 2 //AC asymmetric supercapacitor delivered a high energy density of 41.9 Wh·kg −1 at a power density of 750 W·kg −1 , highlighting its great potential in the field of energy storage.
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GREEN CHEMISTRY
·
2025
·Vol. 27
·期 17
·4540-4550
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IF 9.2
Yang Zhao,Ruguang Wang,Jisi Li,Jiaxin Guo,Quanlu Wang,Zheng Lv,Pengfei Yin,Tao Ling
Single-atom catalysts towards the oxygen reduction reaction (ORR) often suffer from unsatisfactory activity and poor stability. Herein, for the first time, we successfully modulated the electronic structure of the Mn–N–C catalyst by introducing chalcogen oxygen groups (XO2, X = S, Se, Te), which induce changes in the Mn–N bond length in the MnN4 structure, thereby modulating the electronic structure of the metal center Mn. The experimental results demonstrate that the introduction of XO2 groups results in the rearrangement of Mn 3d electrons, which can be strongly correlated with the ORR activity of the Mn–N–C catalysts, among which the SeO2 modification increases the kinetic current density of the Mn–N–C catalyst achieving a half-wave potential (E1/2) of 0.79 V versus the reversible hydrogen electrode, approaching that of Fe–N–C catalysts along with significant stability in acidic media. The promising performance of the Mn–N–C catalyst as a PGM-free cathode was confirmed through fuel cell testing. First-principles calculations demonstrate that the introduced XO2 group downshifts the d-band center of the Mn center, thus successfully optimizing the adsorption of oxygen intermediates. This finding significantly facilitates the activity enhancement of Mn–N–C catalysts via the construction of a geometric structure–electronic structure–catalytic property relationship.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Fan Xiulian,Yi Jiali,Deng Bin,Zhou Cong,Zhang Zejuan,Yu Jia,Li Weihan,Li Cheng,Wu Guangcheng,Zhou Xilong,Sun Tulai,Zhu Yihan,Zhou Jian,Xia Juan,Wang Zenghui,Lai Keji,Peng Zheng,Li Dong,Pan Anlian,Zhou Yu
The experimental realization of single-crystalline high-κ dielectrics beyond two-dimensional (2D) layered materials is highly desirable for nanoscale field-effect transistors (FETs). However, the scalable synthesis of 2D nonlayered high-κ insulators is currently limited by uncontrolled isotropic three-dimensional growth, hampering the achievement of simultaneous high dielectric constants and low trap densities for small film thicknesses. Herein, we show a 2D edge-seeded heteroepitaxial strategy to synthesize ultrathin nonlayered 2D CaNb 2 O 6 nanosheets by chemical vapor deposition, exhibiting high-crystalline quality, thickness-independent dielectric constant (~ 16) and breakdown field strength up to ~ 12 MV cm −1 . The MoS 2 /CaNb 2 O 6 FETs exhibit an on/off ratio of over ~ 10 7 , a subthreshold swing down to 61 mV/dec and a negligible hysteresis. This work suggests a universal 2D edge-seeded heteroepitaxy and slow kinetic strategy for the scalable growth of 2D nonlayered dielectric and demonstrates 2D CaNb 2 O 6 nanosheets as promising dielectrics for facilitating 2D electronic applications.
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ACS Sensors
·
2025
·
IF 9.1
Zhenliang Li,Yuan Ren,Yujian Rao,Rui Ma,Ao Xu,Zejun Han,Tuo Zhang,Xueqiong Cui,Qiongfeng Shi,Li Tao
A rapid and highly sensitive detection of harmful gas molecules is crucial in artificial olfaction (electronic nose), which plays a significant role in areas such as environmental monitoring and healthcare. However, it remains a significant challenge to construct highly sensitive molecular sensors with fast response at room temperature due to the limitations in structures and properties (e.g., porosity, crystallinity, and carrier mobility) of the sensing materials. Herein, this study proposes a facile method to enable highly crystalline mesoporous WSe2/WO3 (m-WSe2/WO3) semiconductor heterostructures through controllable interfacial self-assembly of polyoxometalate (POM) clusters and amphiphilic block copolymers combined with a thermal-assisted conversion process. It allows uniform pore size, open channels, large specific surface area, highly crystalline framework, and abundant transition metal chalcogenide/metal oxide heterojunction interfaces. The m-WSe2/WO3-based chemiresistive semiconductor sensor achieves efficient detection of NO2 at room temperature, including ultrafast response (5 s), high selectivity (SNO2/Sgas > 5), high sensitivity (62.5%@50 ppm), low detection limit (50 ppb), and long-term stability (>30 days). Thanks to the synergistic improvement of sensing dynamics between mesostructure and heterojunction, such a few-second response time has been reduced by half of the reported values in most existing counterparts based on two-dimensional materials. Our work paves the way for the application of high-performance and cost-effective molecular sensors in artificial olfaction, electronic skins, and wearable integrated circuits at room temperature.
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Science Advances
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2025
·Vol. 11
·期 27
·
IF 12.5
Shenghong Ren,Heyang Chen,Huangliu Fu,Haoran Huang,Tian-Ran Wei,Xun Shi,Xiuyan Li
Ductile polycrystals are usually metals with high-symmetry structures that provide multiple slip systems to coordinate the synergetic deformation of adjacent grains. However, while exceptional plasticity was recently discovered in a series of low-symmetry semiconductors, their deformation mechanism remains mysterious. Here, taking monoclinic Ag 4 SSe as a case study, we show that the inherent high-symmetry anion sublattice with a quasi–body-centered cubic (bcc) structure is embedded in the monoclinic matrix. This, coupled with the highly diffuse cations, results in multiple slip systems and is responsible for the superior plasticity as normally unexpected in low-symmetry structures. We observe typical slip systems conforming with those of the bcc structure by experiment. This finding clarifies the deformation mechanism of Ag 2 S-based low-symmetry semiconductors and sheds light on future exploration of ductile inorganic semiconductors.
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