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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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Immanuel Paulraj,Vinothkumar Lourdhusamy,A.S. Niranjan,Chia-Jyi Liu
The thermoelectric properties of a series of organic–inorganic hybrid and ternary composites comprising Tellurium (Te)/Polypyrrole–carbon composite (PPy C), Te/Ethylene glycol (EG)–poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), Te/EG–PEDOT:PSS/PPy-C, and Te combined with acid (hydrochloric acid (HCl), sulfuric acid (H 2 SO 4 ), and nitric acid (HNO 3 )) post-treated PEDOT:PSS at loadings of 20, 50, and 90 wt% were systematically investigated. Among the acids examined, HNO 3 post-treatment reduces electrical resistivity while largely retaining the Seebeck coefficient, thereby increasing the power factor. Increasing the HNO 3 -treated PEDOT:PSS content further suppresses total thermal conductivity, primarily due to the polymer's intrinsically low thermal transport. The optimal p -type performance is obtained in the 90 wt% HNO 3 -treated PEDOT:PSS/Te hybrid composite, achieving a peak zT of 0.16 at 450 K. For the n -type counterpart, the Ag 2 Se/Se (1.5 wt%) composite achieves a maximum zT of 0.9 at 375 K. A 12-pair thermoelectric generator (TEG) integrating these optimized p - and n -type legs produces a maximum output power of 17.4 μW (111 mV, 317 μA) and a power density of 13.7 μW·cm −2 at ΔT = 80 K, with respective p -leg, n -leg, and device efficiencies of 0.58 %, 3.65 %, and 2.68 %. These results demonstrate the potential of acid-engineered organic–inorganic hybrids for efficient mid-temperature thermoelectric applications and pave the way for lightweight and high-performance TEG devices.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2025
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IF 5.6
Shaodong Zhai,Nan Hu,Zhenghao Wang,Hongnv Zhang,Xiang Guo,Ruiping Zhang
Sustained stress overload results in pathological hypertrophy, which is characterized by fibrosis and excessive calcium ion accumulation in the heart. This calcium overload subsequently induces a surge of reactive oxygen species (ROS) in cardiomyocytes, further aggravating cardiac fibrosis and accelerating the progression of cardiac remodeling. Fortunately, the calcium channel blocker amlodipine possesses antihypertrophic and antifibrotic properties. Given these features, nano-formulating common calcium channel blockers offers potential for treating myocardial hypertrophy in the absence of specific drugs. Hence, a side-chain selenium-containing polymer was constructed (PSe@Amd-TAG) modified with CREKA loaded with the amlodipine to achieve targeted accumulation and localized release in hypertrophic myocardium. The results showed that the PSe@Amd-TAG improved cardiac function in transverse aortic constriction (TAC) mice, and effectively suppressed the expression of myocardial hypertrophy markers ANP, BNP, and MYH7. PSe@Amd-TAG inhibited the enlargement of cardiomyocyte, inhibited cardiac fibrosis, and suppressed the production of calmodulin in the heart. Additionally, PSe@Amd-TAG effectively suppressed intracellular calcium levels and inhibited the NFκB signaling pathway. Therefore, this study provides a novel strategy for targeted inhibition of calcium level in cardiomyocytes to treat TAC-induced myocardial hypertrophy.
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Nature Communications
·
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
·
2025
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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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Surfaces and Interfaces
·
2025
·
IF 6.3
Muhammad Sanaullah Shah,Zhang Zhenyu,Sohail Ahmad,Wang Shuiying,Hou Hongying,Zuo Xiaoqing,Muhammad Zia Ullah Shah
The search of an efficient and stable electrode material has led to the growing interest in using transition metal-based nanocomposites in supercapacitors. In this work introduces the NiSe 2 -MnS hybrid material synthesized by a low-cost solution to overcome the shortcomings of single-component systems to exploit dual-phase synergy. MnS was incorporated in NiSe 2 , which has good conductivity of electricity, and the combination of both leads to an electrochemical compound having enhanced performance. Effective formation of the NiSe 2 -MnS nanostructure with good integration was confirmed by careful structural and morphological studies. Electrochemical analysis revealed that the composite had a spectacular specific capacitance of 835 F/g in three- electrode system and 134 F/g in two- electrode set up. Interestingly, the electrode still had 85.1%, After 5,000 consecutive charge -discharge cycles at a current density of 8 A/g, the material still had a considerable fraction of its initial capacitance, which shows its excellent cycling stability. In general the NiSe 2 -MnS hybrid system is a cost effective but very efficient pathway to the future of energy storage.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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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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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Pingping Yu,Xiaotian Yu,Yuqing Kong,Lin Sun,Yanfeng Jiang
Self-powered polarization-sensitive photodetectors play an important role in considerable fields such as navigation, military reconnaissance, and medical imaging. In this paper, a Sb2Se3/PEDOT heterojunction was developed by spraying a PEDOT film to a single Sb2Se3 microbelt (MB) with high crystallinity, synthesized using the CVD process. The self-powered Sb2Se3/PEDOT photodetector (PD) exhibits high polarization-sensitive and broadband detection in the visible–near-infrared range (368–1300 nm). The device achieves a high on/off ratio of 1804, maximum responsivity and specific detectivity of 2.33 A W–1 and 3.84 × 1012 Jones, and fast response time (23 ms/60 ms) at 724 nm under zero bias. The Sb2Se3/PEDOT PD exhibits excellent polarization sensitivity characteristics with the highest anisotropy ratio of 1.7 under 724 nm at zero bias, which is 1.13 times higher compared to the Sb2Se3 PD (1.32) at 0.2 V. The enhanced ability to detect polarized light of the Sb2Se3/PEDOT PD can be attributed to inherent anisotropy of the Sb2Se3 MB and good polarization-sensitivity of PEDOT to form a type II heterojunction, which is suitable for fast separation of photogenerated carriers. Excellent imaging capabilities of the letters “JN” and sensitivity to polarized light at 724 nm have been established for the high-resolution single-pixel image sensor at 0 V bias. This work demonstrates an effective strategy for high-optical response, self-powered, polarization-sensitive photodetection, and imaging using Sb2Se3/PEDOT heterojunctions.
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Advanced Science
·
2025
·
IF 14.1
Xiaoli Li,Sizhao Xing,Yanli Li,Guangshuo Wang,Xiaoyi Gao,Dong Li
Sub-1-nm nanowires (NWs) with fascinating physicochemical properties have demonstrated remarkable potential for applications across various fields. However, it remains a great challenge to prepare sub-1-nm NWs with near-infrared (NIR) absorption characteristics and explore their optoelectronic applications, so far. Herein, a novel cation-exchange strategy in N, N-dimethylformamide (DMF) solvent is introduced to synthesize sub-1-nm PbSe NWs, starting from sub-1-nm ZnSe NWs. Theoretical calculations and nuclear magnetic resonance (NMR) measurements have confirmed that the cation exchange reaction in DMF effectively reduces the barriers for Zn 2+ extraction and Pb 2+ introduction compared to the conventional toluene/methanol system. Notably, the resulting sub-1-nm PbSe NWs exhibit a strong absorption peak at ≈940 nm. Leveraging their unique NIR absorption features and superior carrier transport properties, self-powered photoelectrochemical-type (PEC) photodetectors is fabricated based on sub-1-nm PbSe NWs embedded in polyvinylidene fluoride (PVDF) composite films. These photodetectors demonstrated exceptional photoresponse performance under 940 nm illumination (8.0 mW cm −2 ), with a typical on/off ratio of 4860, a detectivity of 4.65 × 10 11 Jones, and a responsivity of 113 mA W −1 . This work provides a new approach for developing and investigating NIR photoactive sub-1-nm semiconductor NWs with broad application prospects.
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ACS Applied Nano Materials
·
2025
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IF 5.5
Tengfei Wang,Qing Pang,Boyu Liu,Hongyu Wang
In recent years, molybdenum diselenide (MoSe2) nanomaterials have been proven to be promising electromagnetic wave (EMW) absorbers, attributed to the formation of a heterogeneous interface between the 2H semiconductor phase and the 1T metal phase during its preparation. However, the difficulty in precisely controlling the two-phase ratio and the complexity of the process hinder its further development. In this work, we constructed a simple phase engineering strategy based on the regulation of reducing agent concentration, achieving a regulation of the 1T phase proportion in defective 1T/2H-MoSe2 nanomaterials (ranging from 67.91 to 41.45%) by accurately adjusting the amount of NaBH4 added. The findings indicate that the material exhibits excellent microwave absorption performance when the 1T phase proportion reaches 53.55% (1T/2H-MoSe2-2), demonstrating a minimum reflection loss (RLmin) of −40.0 dB, and the effective absorption bandwidth (EAB) covers 6.08 GHz (11.92–18.0 GHz) when the thickness is 2.6 mm. The enhancement in performance results from a synergistic balance mechanism established by the abundant 1T-2H heterogeneous interface, which induces interfacial polarization loss, along with a moderately enhanced conductive loss in the 1T/2H-MoSe2-2 nanomaterial. Furthermore, radar cross-section (RCS) simulation results confirm the dramatic dissipation ability of absorbers for EMW in practical applications. This strategy paves the way for designs of interfaces and the control of the performance of absorbing nanomaterials based on transition-metal dichalcogenides (TMDs).
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
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IF 4.1
Kun Liu,Long Ma,Pengpeng Du,Qiufang Liu,Yan Yan,Shaohua Wen,Yuan Dang,Qi Xue
Developing non-noble transition metal electrocatalysts with high catalytic activity and durability is essential for the oxygen evolution reaction (OER). Herein, novel nanoflower-like Se-NiCo 2 O 3 electrocatalyst (Se-NiCo 2 O 3 NFs) were fabricated via a hydrothermal refluxing and high-temperature calcination strategy. The electrochemical test results demonstrated that the 7 wt% Se-NiCo 2 O 3 NFs exhibit superior OER activity compared with the pristine NiCo 2 O 3 NFs, requiring an overpotential of 290 mV to reach a current density of 10 mA cm −2 along with a low Tafel slope of 56.89 mV dec −1 . Their superior and stable catalytic performance can be attributed to structure advantage and Se doping. The nanoflower structure provides a large specific surface area to expose abundant active sites. In addition, the doping of Se can further increase the electrical conductivity and regulate the electronic structure of metal atoms, promoting the adsorption of reaction intermediates such as OH ⁎ and enhancing the material's oxygen evolution capability. This work provides new insights and methodologies for designing efficient and stable Se-doped metal oxide electrocatalysts.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Dongxu Zhu,Guyu Liu,Guangjiang Zhang,Zihao Yin,Huan Yang,Shuai Gao,Chenhe Zhang,Xinguo Xi
Spinel-type transition metal oxide (AB 2 O 4 ) are promising non-precious metal catalysts for oxygen evolution reaction (OER), addressing the challenges of high cost and poor stability in electrocatalytic water splitting. However, their widespread application is hindered by low electrical conductivity and suboptimal performance. In this study, we developed an oxygen vacancy anchoring strategy to construct a highly efficient and durable NiCo 2 O 4 -NiSe 2 heterojunction catalyst on a nickel foam substrate. The three-dimensional cross-linked porous nanorod array facilitates mass and charge transportation. The abundant interconnected interfaces enhance electron transfer kinetics and adsorption of OH intermediates, as confirmed by theoretical simulations. As a result, the as-synthesized NiCo 2 O 4 @NiSe 2 /NF exhibits an overpotential of only 299 mV at a current density of 60 mA cm −2 , significantly outperforming the single-phase NiCo 2 O 4 and demonstrating exceptional durability.
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