Nature Communications
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2020
·Vol. 11
·期 1
·1-10
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IF 12.121
Yu Dejian,Wang Peng,Cao Fei,Gu Yu,Liu Jiaxin,Han Zeyao,Huang Bo,Zou Yousheng,Xu Xiaobao,Zeng Haibo
Ensuring nuclear safety has become of great significance as nuclear power is playing an increasingly important role in supplying worldwide electricity. β-ray monitoring is a crucial method, but commercial organic scintillators for β-ray detection suffer from high temperature failure and irradiation damage. Here, we report a type of β-ray scintillator with good thermotolerance and irradiation hardness based on a two-dimensional halide perovskite. Comprehensive composition engineering and doping are carried out with the rationale elaborated. Consequently, effective β-ray scintillation is obtained, the scintillator shows satisfactory thermal quenching and high decomposition temperature, no functionality decay or hysteresis is observed after an accumulated radiation dose of 10 kGy (dose rate 0.67 kGy h −1 ). Besides, the two-dimensional halide perovskite β-ray scintillator also overcomes the notorious intrinsic water instability, and benefits from low-cost aqueous synthesis along with superior waterproofness, thus paving the way towards practical application.
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LANGMUIR
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2025
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IF 3.9
Jie Chen,Chenyi Zheng,Qiang Wang,Zhipeng Xu,Kui Meng
Many innovations have been made in the morphology and preparation methods of copper–silver core–shell nanomaterials (Cu@AgNMs). The most commonly used method for preparing Cu@AgNMs is to perform a replacement reaction by adding a complexing agent, but there is no universally accepted method to select a complexing agent. This study found that the best complexing agent for preparing Cu@AgNMs is a short-chain complexing agent containing hydrophilic groups through the role of different complexing agents in the synthesis of the material, and the higher the stability of the short-chain hydrophilic complexing agent, the better the integrity of the resulting silver layer. This study clarifies the mechanism of different complexing agents in the synthesis of Cu@AgNSs, provides a reliable reference for the convenient preparation of Cu@AgNMs, and helps us to understand the influence of complexing agents on the silvering effect of the replacement process, thereby promoting the widespread application of a complex-replacement technology.
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JOURNAL OF MOLECULAR STRUCTURE
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2025
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IF 4.7
Zengfeng Wei,Yumeng Zhang,Hu Xia,Lijie Ni,Wenhai Wu,Xiaoning Wang,Heng Quan
A novel bio-based corrosion inhibitor, hexadecyl amine-modified catechol (CA16), was synthesized, and its molecular structure was characterized. The ability of CA16 to inhibit the corrosion of carbon steel in 1 M HCl was evaluated by potentiodynamic polarization, electrochemical impedance spectroscopy and weight loss. The highest inhibition efficiency reached 96.87% at 10 −3 M. CA16 is a mixed-type corrosion inhibitor that can adsorb on the Fe surface spontaneously through chemical adsorption following the Langmuir adsorption model. The adsorption of CA16 and carbon steel occurred between catechol groups and the Fe surface, as confirmed by quantum chemical calculations and molecular dynamic simulations. This novel bio-derived high-performance inhibitor offers a sustainable alternative to conventional petrochemical-based counterparts, demonstrating significant potential for industrial-scale applications while aligning with green chemistry principles.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Fan Wang,Rui Xu,Xianghan Ye,Yating Zhu,Jiayin Wang,Kefei Cheng,Kaijia Xu,Yinyin Qian
Among heavy-metal-free III-V colloidal nanocrystals, Indium antimony (InSb) stands out as a promising candidate for constructing solution-processed broadband photodetectors (PDs) owing to its ultranarrow bandgap and exceptionally high carrier mobility. However, the high affinity of Sb element for oxygen makes InSb susceptible to native surface oxidation, a process that creates barriers to carrier transport and reduces light absorption efficiency, thereby significantly degrading the performance of InSb-based PDs. In this study, we propose a solution-based route for fabricating InSb nanowires (NWs) decorated with Au nanoparticles (NPs) to fabricate a broadband, self-driven PD. The incorporation of Au NPs significantly reduces the surface trap states introduced by surface native oxide layer and enhances the performance of the PD across the visible to near-infrared (NIR) region. Compared with bare InSb NWs PDs, the Au/InSb nanohybrid device achieves a dramatic improvement in the switching ratio, reaching approximately 300 under visible-to-NIR illumination at an intensity of 36 mW/cm 2 . The maximum responsivity and detectivity values of the Au/InSb nanohybrid PD were 100 times higher than those of bare InSb NWs. Finite-difference time-domain (FDTD) simulations were employed to analyze the spatial distribution of the electromagnetic field across Au/InSb nanohybrids. The localized surface plasmon resonance (LSPR) of Au NPs and the transfer of hot electrons were identified as key factors contributing to the observed performance enhancement. This study serves as a foundational exploration of the potential for high-performance PDs utilizing Au NPs and other narrow-band III-V materials exhibiting LSPR effects.
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INORGANIC CHEMISTRY
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2025
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IF 4.7
Jiahe Li,Xing-Yue He,Xiaowen Wang,Yiwei Lv,Jian-Gong Ma,Bo Li,Peng Cheng
CO2 hydrogenation is one of the key technologies for carbon recycling and greenhouse effect mitigation. Cu-based catalysts have been widely used in the hydrogenation of CO2 to methanol. However, the low catalytic efficiency and instability of Cu-based catalysts limit their industrial application. Herein, a Zr-based metal−organic framework was used to synthesize a Cu NWs@ZrO2 catalyst with a Cu-ZrO2 interface. The Cu NWs@ZrO2 catalyst shows high activity with promising selectivity and excellent stability for the synthesis of methanol from CO2 hydrogenation. Density functional theory calculations and in situ diffuse reflectance Fourier transform infrared spectroscopy confirmed that the CO2 hydrogenation on Cu NWs@ZrO2 followed the HCOO* pathway, and the Cu-ZrO2 interface made a significant contribution to the key intermediate step of CO2 to HCOO* and accelerated the CO2 hydrogenation.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2025
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IF 1.6
Li Haozhe,Zhang Zhenyi,Zhou Fanglue,Huang Jiang
This study presents a modular adsorbent platform for uranium recovery using electron beam (EB) irradiation. A decoupled two-step synthesis involves initiator-free EB grafting of ionic liquids onto hollow mesoporous silica, achieving tunable grafting density (0.89 mmol/g at 50 kGy), followed by functionalization with uranyl-targeting groups. The optimal adsorbent HMS@IL-R1 demonstrates a uranium adsorption capacity of 185.9 mg/g, stable operation across pH 3–11, and 95.1% capacity retention after five cycles. Monte Carlo-optimized reactors enable scalable 100 g-batch synthesis, highlighting the efficacy and scalability of EB technology for a modular and practical pathway for nuclear resource recovery.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Xiao-Ze Ma,Kai Zhu,Xu Wang,Ting Chen,Jia-Chu Yang,Le Shi,Xin-Xin Zhang,Wen-Tie Yang,Ze-Hua Dong
Anti-rust oils (AROs) are essential for the long-term storage of metal equipment, especially in harsh environments. However, intrusive saline aerosols and moisture can cause severe ARO degradation and corrosion beneath the oil film. To address this issue, we synthesised a series of homologous N-butyl-C n -ammonium dodecylbenzene sulfonate (C 4 C n NH 2 + ∙ − SO 3 PhC 12 , C 4 C n NSPD, n = 4, 8, 12, 16, and 18) ionic liquids (ILs) to investigate how molecular structure influences steel corrosion under oil films. We found that the length of the cationic alkyl chain is critical for their inhibitory activity, with the long-chain IL (C 4 C 16 NSPD) creating a denser interfacial film (794.2 ng/cm 2 ; 21.9 nm thick) and a lower critical micelle concentration (CMC) of 0.05 wt.%, only 1/20 that of short-chain ILs (C 4 C 4 NSPD). SAXS analysis revealed that C 4 C 16 NSPD IL forms spherical reverse micelles with a diameter of 32 nm in white oil. Meanwhile, C 4 C 4 NSPD disrupts micellar structures, suggesting an alkyl-chain-dependent mechanism of micelle assembly. C 4 C 18 NSPD can achieve 99.5% inhibition efficiency in oil films against NaCl droplet invasion. Theoretical calculations show that anions in ILs adsorb to steel surfaces via electrostatic coordination and π-π stacking, while long-chain cations strengthen bilayer stability via van der Waals interactions and steric shielding. Thus, the long-chain ILs form stable reverse micelles in white oil, effectively trapping invasive saline droplets. This synergistic mechanism of ordered interfacial adsorption and micellar water arrest enhances the anticorrosion performance of IL-based anti-rust oils.
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iScience
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2025
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IF 4.1
Shen Wang,Xueying Sun,Hongbo Xu
Aqueous Zn-ion batteries offer safe and cost-effective energy storage, yet their energy density requires improvement. While vanadium pentoxide (V 2 O 5 ) possesses attractive redox activity, its practical implementation is hindered by structural instability and limited cycling performance. designed core–shell V 2 O 5 @PANI nanotubes through in situ polymerization to enhance Zn 2+ diffusion and structural resilience. This design improves interfacial charge transfer and stabilizes the host framework during Zn 2+ insertion/extraction. This architecture facilitates interfacial charge transfer and stabilizes the host framework during cycling. The optimized cathode achieves a high capacity of 462.4 mAh g -1 at 0.5 A g -1 with 96.5% capacity retention over 500 cycles. This work demonstrates a synergistic combination of nanostructural control and interfacial engineering, providing a generalizable materials design strategy for advanced electrochemical energy storage systems.
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FUEL
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2025
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IF 7.5
Yuanyuan Li,Xiaoling Xu,Ran Zhang,Xingbao Yang,Kun Jia
Traditional coal mine fire suppression methods face critical limitations, including short-term efficacy, poor penetration in concealed coal seams, and environmental risks from chemical residues. To address these challenges, this study developed a biomaterial-based composite inhibitor integrating physical isolation, free radical quenching, and antioxidant slow release for sustainable prevention of spontaneous coal combustion. A novel antioxidant-loaded composite was synthesized using hollow mesoporous TiO 2 nanoparticles (HM-TiO 2 ) as carriers, which were functionalized via layer-by-layer self-assembly (LBL) of chitosan (CS) and phytic acid (PA) to encapsulate tea polyphenol (TP). This design enables the TP antioxidant activity and low release while leveraging CS/PA’s catalytic char-forming capacity. The chemical composition and micromorphology of the composite were systematically characterized through FTIR, XRD, SEM, and TEM analyses. Programmed temperature oxidation experiments combined with thermogravimetric (TG) and thermogravimetric-Fourier Transform Infrared Spectroscopy (TG-FTIR) measurements were conducted to evaluate inhibition performance by tracking mass loss, characteristic gas emissions, and radical intermediates. Key findings demonstrate that the composite inhibitor: Prolongs coal ignition delay by 48 % compared to untreated coal, attributed to the synergistic barrier effect of the TiO 2 @CS-PA framework and TP’s radical scavenging activity; Reduces CO, CO 2 , CH 4 and H 2 O emissions during low-temperature oxidation; Maintains structural stability above 400 °C, with TiO 2 catalyzing dense char layers to isolate oxygen diffusion. This multifunctional composite overcomes the trade-off between inhibition longevity and environmental compatibility observed in conventional inhibitors (e.g., MgCl 2 , KMnO 4 ), offering a scalable solution for fire prevention in high-level mining areas. The bio-based components (CS, PA, TP) further ensure ecological safety, aligning with green mining initiatives.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Fengjie Gu,Peiwen Li,Shichen Mao,Baogang Wang
An acid-amide bicomponent gelator, composed of 3,3’-dithiodipropionic acid and octadecylamine in a 1:2 molar ratio, was developed to construct supramolecular oil gels in base oils. The gelation mechanism involves the spontaneous self-assembly of gelator molecules into a well-defined 3D lamellar network, driven by van der Waals interactions and electrostatic forces. The representative poly (ethylene glycol) (PEG200) gel exhibited exceptional properties, including reversible heat and shear thixotropic behaviors, as well as high thermal stability, making it a promising candidate for semi-solid lubricants. The tribological evaluations revealed that the PEG200 gel (containing 6 wt% gelator) significantly outperformed the base oil, achieving the remarkable reductions in friction (37.96-57.92%) and wear (43.71-59.06%) under demanding conditions such as high load, elevated temperature, and prolonged duration. Moreover, the addition of 6 wt% gelator enhanced the load-carrying capacity of neat base oil from 300 N to at least 600 N. The superior tribological performance of PEG200 gel was attributed to the formation of a complex boundary lubrication film on the friction interface, consisting of a physical adsorption layer and a robust tribofilm. This dual-layer structure effectively minimizes the friction and wear, highlighting the potential of supramolecular gel lubricants for advanced mechanical lubrication applications.
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APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Rui Xu,Yingzhi Sun,Yating Zhu,Fan Wang,Jiayin Wang,Lanjun Cheng,Kaijia Xu,Yinyin Qian
Switchable photodetection from positive photoconductance (PPC) to negative photoconductance (NPC) is significant for constructing next-generation optoelectronics such as optical device switching, weak signal detection, and photoresponsive memories. Nevertheless, the difficult operability, restricted performance and intricate mechanism have impeded its practical implementation. In this study, an in-situ convenient calcination strategy is conducted to achieve inverse photoconductance in colloidal InSb nanowires (NWs)-based photodetectors. The surface of the as-calcined InSb NWs is demonstrated to be composed of thicker oxide shells with anchored In 2 O 3 nanoparticles compared to that of the pristine InSb NWs, which only consist of thin amorphous native oxide shells. Mechanism studies indicate that the surface chemical states can serve as surface trapping states as well as scattering centers, which can trigger the higher surface band bending and reduce the density and mobility of free carriers, thus lowering the photoconductivity below in dark condition, leading to NPC. It is noteworthy that the PPC and NPC-dominated photodetectors exhibit rapid photoresponse rise and decline times at zero bias voltage under light illumination from 405 to 980 nm. This work offers certain guidance for the modulation of surface chemical states and their associated effects, which can be employed in the development of future optoelectronic applications.
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CHEMICAL PHYSICS
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2024
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IF 2
Xue Yang,Mengyu Lin,Jiumei Chu,Dianquan Dong
The unique properties of cesium compounds have garnered increasing attention, among which Cs 2 Ti 6 O 13 shows great potential for applications. This paper synthesized Cs 2 Ti 6 O 13 (CTO-3) using a template-assisted solvothermal method with cesium carbonate as the cesium source and tetrabutyl titanate as the titanium source. Among them, F127 and hexadecylamine are used as template agents to modulate the surface morphology and hydrophilicity of the precursor. The cesium ion sieve H 2 Ti 6 O 13 (HTO-3) synthesized after hydrochloric acid pickling has a large specific surface area and good hydrophilicity. This structure is conducive to the ion exchange between Cs + and H + , resulting in a fast adsorption rate. It is completed within 2 h, and the adsorption capacity reaches 360 mg/g, which is significantly greater than that of the traditional high-temperature solid-phase method. The adsorption process of Cs + on HTO-3 is more consistent with the pseudo-second-order kinetic equation model, and the adsorption process is chemical adsorption. HTO-3 exhibited good selectivity and cycle stability. At the fifth time of the adsorption-resolution cycle, the adsorption capacity was 87.1 % of the first time.
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