MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Xiaoge Liu,Guixiang Xie,Qilong Li,Xizhao Ye,Sijia Lin,Zhikang Hu,Xiaochun Lu
Releasing residual stress and reducing interface defects are crucial approaches for improving the photoelectric conversion efficiency and performance stability of perovskite solar cells (PSCs). This research introduces nickel chloride (NiCl 2 ) into the electron transport layer of tin dioxide (SnO 2 ) and applies it to the buried interface of all-inorganic CsPbBr 3 PSCs to prepare carbon-based FTO/SnO 2 -NiCl 2 /CsPbBr 3 /C cell devices. Through the morphological and structure characterization, it is found that introducing nickel chloride facilitates the formation of large and dense perovskite films with residual strain released and the passivation of interface defects. Simultaneously, an analysis of the interfacial energy level structure reveals that optimized energy levels enhance electron-hole separation and transport efficiency while effectively suppressing non-radiative recombination. The open-circuit voltage of the all-inorganic perovskite solar cell base on the SnO 2 -NiCl 2 electron transport layer reaches to 1.591 V, and optimal photoelectric conversion efficiency (PCE) of the solar cell devices has been improved from 8.11 % of the control to 9.33 % with NiCl 2 , and the unencapsulated device V OC long term stability maintained 96.9 % within 30 days under atmospheric environment conditions. This study provides new insights into the design of efficient electron transport layer materials to enhance the photovoltaic and environmental stability of PSCs.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Renjun Si,Hongze Jiang,Jinbo Yang,Renminxi Ou,Shaofeng Chen,Xin Guo,Shunping Zhang
Aiming to address the bottleneck issues of database complexity and signal drift in electronic nose systems, this study proposes a novel supplementary strategy for multi-component gas detection. The MEMS gas sensor developed here, based on temperature-programmed desorption (TPD), enables the extraction of multiple volatile target compounds in Baijiu (Chinese distilled spirits) through an adsorption process. Subsequently, the TPD spectrum is employed to derive characteristic signals of these target substances for identification. By incorporating this sensor into a Baijiu detection system and combining it with pattern recognition algorithms, accurate classification of aroma profiles has been successfully achieved for both known and unknown Baijiu samples across different brands. This multi-component gas detection method not only offers an effective complement to electronic nose technology but also provides valuable insights for improving the selectivity of metal oxide semiconductor (MOS) gas sensors.
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INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
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2025
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IF 4.6
Siqi Zhao,Yongqi Lv,Ziwei Zhang,Jinglian Fan
Nano powder plays a key role in preparing high performance tungsten-based materials. It is necessary to synthesize powder with uniform element distribution, low impurity content, and fine particles for preparing higher performance tungsten-based materials with more uniform microstructure, with smaller grain size and higher densification. However, it is difficult to synthesize uniform oxide/carbide reinforced tungsten matrix composite powders with specific structure by traditional powder metallurgy method. In this manuscript, nano W-Y-Ti powders with core-shell structure were synthesized by organic chemical method. The average grain size of W-Y-Ti is 33.33 nm, which indicates the powder refinement is 1 order of magnitude compared with other methods. Moreover, due to the difference of Y 3+ and Ti 4+ , the Y phase tends to form core in W particle and the Ti phase tends to form shell around W particle in these powders synthesized by organic chemical method. This powder structure is conducive to in-situ dispersion of the reinforced phase during sintering and significantly improves the interface properties of the reinforced phase /W matrix phase. The W-Y-Ti composite prepared by SPS shows fine grain size (750 nm) and uniform distribution (Y 2 O 3 is distributed within the W grain, while Ti is distributed at the grain boundaries). It means the microstructure of the powder can be inherited to the bulk materials, which can improve the performance of these composites. This manuscript provides ideas and data basis for the synthesis and preparation of high-strength, tough and high-performance W-based composite materials.
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DIAMOND AND RELATED MATERIALS
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2025
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IF 5.1
F.N. Li,Y.Y. Ma,J.W. Zhang,H.X. Wang
This study presents a novel electrochemical approach for fabricating ethoxy terminated diamond (EtO-diamond) surfaces through high-voltage ethoxide ion treatment in ethanol. Using X-ray photoelectron spectroscopy (XPS), we systematically characterized the voltage dependent surface chemistry, revealing a two-step grafting mechanism: hydrogen abstraction by ethoxy radicals followed by covalent bond formation, as evidenced by C O and CH x peaks. The applied voltage critically governs surface composition, high voltages induced competing pathways (e.g., sp 2 carbon formation). Comparative hydrogen ion treatment enhanced CH x groups and avoided sp 2 carbon formation, indicating minimal oxidation.
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Journal of Materials Chemistry C
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2025
·Vol. 13
·期 44
·22186-22196
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IF 5.1
Shuang Wu,Yongqi Zhu,Nan Zheng,Hui Liu,Yiwen Zhu,Xinyue Li,Yifan Chen,Daqin Chen
Near-infrared (NIR) luminescent materials are promising NIR light sources for multifunctional applications; providing a strategy to tailor the emission and enhance the performance of NIR phosphors is crucial. Herein, a green HF-free synthetic strategy is realized to tune the NIR emission advantageously by substituting on the adjacent octahedral, completely different from breaking the d–d parity forbidden transitions of Cr3+ through conventional lattice distortion. Broadband NIR phosphor K2Na1−xLixAlF6:Cr3+ with excellent thermal quenching resistance is prepared using the hydrothermal method. Controllable emission tuning from 726 to 765 nm and broadening full width at half-maximum from 105 to 130 nm, is achieved by substituting Li+ for Na+, resulting from weakening the crystal field and increasing electron–phonon coupling. Lithium ions play a critical role in suppressing nonradiative relaxation of the emission centers, thereby significantly enhancing the emission intensity of K2NaMF6:Cr3+ (M = Al, Ga, In) phosphors. The as-fabricated prototype NIR phosphor-converted light-emitting diode device, exhibits significant promise in the fields of night vision and information encryption. This study provides an effective design strategy for developing broadband NIR luminescent materials with high efficiency and good thermal stability.
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Energy Sources Part A-Recovery Utilization and Environmental Effects
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2025
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IF 2.2
Yuanxin Zhao
The efficient separation of bio-based solvents, such as acetone, butanol, and ethanol (ABE), is a critical challenge in biofuel production. Traditional separation methods, such as distillation, are energy-intensive, prompting the need for more sustainable alternatives. The salting-out process offers a promising approach by exploiting phase separation induced by inorganic salts, yet research on its equilibrium time remains limited. This study systematically investigates the salting-out performance and separation kinetics of ABE using K3PO4 under varying salt concentrations (200–400 g/kg) and temperatures (25–50°C). Results show that increasing salt concentration from 200 to 400 g/kg reduced the salting-out equilibrium time from approximately 100 min to 30 min for acetone and 1-butanol, while ethanol reached equilibrium in less than 5 min under all conditions. Higher temperatures further extended equilibrium time. This work highlights the positive effect of salt concentration on shortening equilibrium time and the counterintuitive effect of higher temperatures in extending equilibrium time, offering new insights into optimizing salting-out separation for biofuel production.
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FUEL
·
2025
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IF 7.5
Xianjie Wang,Long Yan,Yufei Wang,Shuaige Shi,Jian Li,Xiaoyong Fan
The production of semi-coke via low- and medium-temperature coal pyrolysis offers a promising avenue for coal utilization, yet the resultant wastewater poses significant treatment challenges due to its complex pollutants. This study introduces an innovative approach that shifts from “treatment” to “conversion,” utilizing phenolic substances and ammonium compounds in the wastewater to synthesize thermosetting phenolic resin (PR) and porous carbon (PC). These were activated with potassium hydroxide (KOH), yielding high-performance PC. Using response surface methodology (RSM), optimal conditions were identified: a KOH to PR ratio of 2.798:1, temperature of 816.43 °C, and duration of 1.22 h, achieving maximum iodine adsorption of 1457.22 mg/g. Thermal analysis and kinetic studies showed easier activation of PRs than methenamine, with mixed phenol-derived resins having the lowest activation energy. The pore structure analysis revealed that catechol, 2,3-dimethylphenol, and 2,6-dimethylphenol generated substantial mesopore and micropore volumes, whereas phenol and m-cresol primarily formed large pores. Ammonia addition rendered the PC pores round and regular. This research establishes a theoretical basis for transforming semi-coking wastewater into valuable resources and synthesizing advanced PC materials.
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PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Xi Yu,Yansong Liu,Lixiao Gao,Li Wang,Xizhi Chen,Yuanlin Ren,Xiaohui Liu
To endow silk with multifunctionality and expand its application fields, the silk fabric was treated with protocatechualdehyde to prepare a novel silk fabric with Schiff base structure (CAT@Silk). Then, CAT@Silk was immersed in iron (III) solution to chelate Fe 3+ to obtain flame retardant , antibacterial and UV-resistant silk fabric (CAT@Fe@Silk). Compared with the limiting oxygen index (LOI) value of the original silk, the CAT@Fe@Silk increased from 23.3 % to 35.1 %, and remained 32.4 % even after 20 laundering cycles (LCs), indicating excellent flame retardant durability. The UV protection coefficient of CAT@Fe@Silk was 67.74, which was higher than that of the original sample (21.02). In addition, CAT@Fe@Silk had good antibacterial effects against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). This work constructed a dynamic cross-linking network that mimicked the adhesion of mussels generating from the complexation of catechol groups and Fe 3+ ions (catechol-Fe 3+ ), which not only endowed silk fabric with good flame retardancy, but also with UV resistance and antibacterial properties, demonstrating good potential application.
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JOURNAL OF FLUORESCENCE
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2024
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IF 2.6
Wang Xuefeng,Mejia Esteban,Zuo Yujing,Lv Zhiyan,Wang Zonghua
The development of fluorescent probes for H 2 S detection especially in living cells is of great significance due to its fundamental role as signal molecule. A promising scaffold for the development of such probes is polydimethylsiloxanes (PDMS), which is cost-effectiveness, non-toxicity, flexibility, and biocompatibility and easy to post-functionalize. Surprisingly, fluorescent probes for H 2 S detection based on PDMS have not been investigated. Moreover, 4-nitro − 2,1,3-benzoxadiazole (NBD) derivates provides high fluorescence quantum yield, a large molar absorption coefficient, and sensitivity to environmental changes. Through reasonable design and adjustment of substituents on the NBD group, precise control of its fluorescence properties can be achieved. Herein, a novel H 2 S fluorescent probe, P-NBD, was designed and synthesized by a one-step aromatic ring nucleophilic substitution of Cl-NBD with a PDMS derivative. Due to the occurrence of the cleavage reaction strategy and the intramolecular charge transfer process, P-NBD can detect H 2 S via a colorimetric method. The limit of detection is down to 93 nM. P-NBD demonstrated considerable detection capability comparable to other reported types of H 2 S probes. Moreover, the probe can also be utilized for H 2 S imaging in HeLa cells. This work provides new insights into the design and synthesis of novel H 2 S probes while also offering experimental evidence for the application of PDMS in cellular imaging.
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PubMed
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OPTICAL MATERIALS
·
2025
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IF 4.2
Bing Xu,Liu Yang,Yan Li,Chunyu Cao
A Spermine Oxidase (SMOX)detection local surface plasmon resonance/surface plasmon resonance (SPR/LSPR) optical fiber sensor was constructed with a three-layer structure consisting of gold film/gold nanospheres (AuNPs)/SMOX-antibody in this study. The detection of SMOX was achieved through the specific binding of immobilized antibodies to free antigens in a buffer solution. The AuNPs were immobilized on Gold Film by 1,6-Hexanedithiol (DMH) linker to enhance the sensitivity of optical fiber probe from 1821.21 to 2204.97nm/RIU. The Zeta potential and Fourier Transform Infrared Spectroscopy (FTIR) indicated that the SMOX antibody was attached to the surface of the optical fiber probe by physisorption to construct a SMOX sensor. The SMOX-detection experimental data conformed to the Langmuir model with an R 2 value of 0.92, a lower limit of detection of 0.625μg/ml and exhibited excellent selectivity, high stability, and a rapid response time of 12 min. This method provides a new concept for SMOX detection and has a broad application prospect in the field of biomedical diagnosis.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shuang Zhong,Yu Tian,Chen Chen,Bin Nie,Hongyan Wang,Shengyu Zhang
The utilization of nitrogen and sulfur-codoped biochar-activated peroxymonosulfate (PMS) has emerged as a promising advanced oxidation technology for the degradation of organic pollutants. However, the dominant active sites, especially the specific defect structures governing PMS activation and their subsequent activation mechanism remain ambiguous, posing challenges to the rational design of high-performance biochar catalysts. Herein, a series of nitrogen and sulfur-codoped biochar (NSBC) with varying pyrolysis temperatures and doping levels were synthesized. An investigation into the relationship between their properties and the reaction rate constants of 2,4-dichlorophenol (2,4-DCP) degradation by activated PMS revealed that intrinsic defects, thiophene S, and graphitic N were active sites in the oxidation reaction, with intrinsic defects identified as playing a predominant role. Density functional theory (DFT) calculations combined with electrochemical measurements further revealed the crucial role of single-vacancy defective configuration in mediating a direct electron transfer pathway for 2,4-DCP degradation. Moreover, double-vacancy and topological defects facilitated the transfer of electrons to adsorbed PMS, leading to the release of 1 O 2 and subsequent degradation of 2,4-DCP. The distinctive mechanism enabled the NSBC-activated PMS system to exhibit high selectivity and effectively remove 2,4-DCP from a complex aquatic environment. The findings from this study provide valuable insights into the role of specific structural defects in PMS activation and offer theoretical support for the design of biochar catalysts with heteroatom doping strategies.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Zhaoyu Wu,Xiaoyu Wu,Xiangtian Meng,Jiahao Lei,Chenlin Zeng,Hongji Pu,Yijun Liu,Zhijue Xu,Xiaodong Wu,Sheng Huang,Jinbao Qin,Jianqiang Liu,Xinwu Lu,Bo Li
Abdominal aortic aneurysm (AAA) is a chronic inflammation-driven disease characterized by aortic wall destruction and expansion, leading to high morbidity and mortality. However, previous drug treatments for its common risk factors have not achieved favorable results, and the early prevention and treatment is still the main clinical dilemma. Anti-inflammation therapy is a promising therapeutical method targeting its pathogenesis mechanism, but it has not been explored in depth. Herein, interleukin-1 receptor antagonist-loaded manganese-doped mesoporous silica nanoparticles (IL-1Ra@MMSN) were designed and synthesized to target macrophage-mediated chronic aortic inflammation for AAA treatment. IL-1Ra@MMSN showed high IL-1Ra-loading efficiency, great stability and pH-responsive drug-releasing property. IL-1Ra@MMSN specially phagocytosed by macrophages can protect against oxidative stress injury and promoted the M2 polarization via transforming growth factor-β (TGF-β) signaling in vitro . Furthermore, IL-1Ra@MMSN exhibited good lesion targeting ability, hemocompatibility and biocompatibility in angiotensin II-induced murine AAA model. In vivo experiments also confirmed the excellent treatment efficacy in reducing AAA formation and progression via protecting aortic wall integrity and promoting anti-inflammatory microenvironment. Taken together, the current study demonstrated that IL-1Ra@MMSN is a promising nanoplatform for early intervention of AAA, which provides a novel treatment strategy based on anti-inflammatory immune regulation.
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