APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Tao wang,Nan Yang,Changyu Duan,Longyun Li,Yuetong Cao,Ke Wang,Zhongqi Zhu,Genlin Zhang,Yumin Zhang,Qingju Liu,Jin Zhang
Acetone, a critical biomarker in exhaled breath for the diagnosis of diabetes, necessitates the development of high-performance gas sensors for real-time monitoring. In this work, bimetallic In 2 O 3 /Co 3 O 4 porous nanorods with tunable In/Co molar ratios were synthesized via a hydrothermal approach. The optimized sensor 3-ICO (In:Co = 3:10, molar ratio), exhibited remarkable acetone-sensing performance with a high response of 125.6 to 10 ppm acetone at 250 °C, ultrafast response/recovery times (45 s/19 s), outstanding selectivity, and long-term stability. The integration of materials characterization with density functional theory (DFT) simulations demonstrated that the p-n heterojunction formed between Co 3 O 4 and In 2 O 3 facilitates interfacial charge transfer, enhancing both the oxygen vacancy concentration and specific surface area. These synergistic effects significantly improve acetone adsorption energy and electron transport efficiency. This work highlights the pivotal role of heterojunction engineering in optimizing the detection performance of metal-oxide semiconductors for low-concentration volatile organic compounds (VOCs), offering promising applications in non-invasive diabetes diagnosis.
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Nanomaterials
·
2025
·Vol. 15
·期 16
·1238
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IF 4.3
Bingbing Zheng,Shuaigang Ge,Lingli Chen,Yijia Wen,Kaihuang Huang,Bingsuo Zou
Cd-based perovskite materials have the advantages of high emission efficiency and tunable emission, as well as broad application prospects in the field of optoelectronics. However, achieving multimode dynamic luminescence under UV light excitation in a single system is a great challenge. Here, we successfully prepared Sb3+/Pb2+co-doped Cs7Cd3Br13crystals by a simple hydrothermal method. Tunable emission from orange to white and then to blue, covering the wavelength range between 370 and 800 nm, was achieved by varying the doping concentration of Pb2+ions in Cs7Cd3Br13:0.5%Sb3+. Temperature-dependent photoluminescence (PL) spectra and density functional theory (DFT) calculations confirm that the wide-band white-light emission of Cs7Cd3Br13: Sb3+/Pb2+crystal comes from the first self-trapped exciton (STE1) of undoped Cs7Cd3Br13intrinsic capture state and the emission of free excitons (FEs) and STE2 induced by the confining effect and the Jahn–Teller effect by Pb2+incorporation, as well as the Sb triplet self-trapped exciton (STE3). More specifically, the samples with the best co-doped ratio exhibit significant excitation-wavelength-dependent luminescence characteristics and can realize the conversion of the emission color from white and blue to orange. Based on the tunable emission characteristics of three emission colors, the material has good prospects in encryption and anti-counterfeiting applications. This work provides a new strategy for the application of Cd-based halides in the field of anti-counterfeiting.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Shenghui Tu,Peng Zhou,Mingming Dong,Wenbin Wu,Lu Sun
In this study, an efficient and magnetic Co/CeO₂@GC catalyst was synthesized by calcination using Co@Ce-MOF as precursor. The effects of different catalyst dosages, tetracycline (TC) concentrations, pH values, peroxomonosulfate (PMS) concentrations, temperatures, and coexisting anions on the catalytic performance were investigated. Under the conditions of 20 mg catalyst and 20 mg PMS, the degradation rate of 100 mL of 40 mg/L tetracycline could reach 95.7%. The catalyst maintained effective PMS activation across a broad pH range (5-11), retaining 79.2% activity after four consecutive cycles. Electron paramagnetic resonance spectroscopy and radical quenching experiments confirmed the coexistence of both radical pathways and non-radical pathways in the system, with the latter identified as the dominant contributor to the degradation process. Reaction pathway analysis via liquid chromatography-mass spectrometry further elucidated TC transformation mechanisms under these oxidative conditions. This work proposed a MOF-derived materials as an efficient PMS activator for a simple method of TC degradation.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Hang Xu,Lijuan Wang,Zhuoran Tian,Jingru Geng,Jinsheng Liang
Designing efficient photocatalysts is crucial for enhancing photocatalytic performance, with the separation efficiency of photogenerated charge carriers being a key factor, the improvement of this performance can significantly enhance antibacterial efficiency. To address the limitations of traditional bismuth oxybromide (BiOBr) photocatalysts, this study synthesized visible-light-driven Al/Cu co-doped BiOBr (2ACBB) microspheres via a solvothermal method. Dual metal doping synergistically modifies the band structure, introducing oxygen vacancies that narrow the bandgap (2.69 eV vs. 2.80 eV) while enhancing visible-light absorption and charge separation efficiency. Optimized 2ACBB exhibits a high surface area (27.64 m 2 /g) and demonstrates 3.2-fold greater photocurrent response than pristine BiOBr. EPR analysis reveals superoxide radicals ( · O 2 - ) and electrons as dominant reactive species, enabling exceptional antibacterial performance (99.99 % S. aureus and 97.99 % E. coli inactivation within 40 min). Mechanistic studies confirm that hierarchical architecture promotes bacterial adsorption and light harvesting, while generated · O 2 - and e − disrupt membrane integrity and metabolic processes. This work on the enhanced antimicrobial properties of metal ion-doped photocatalytic materials provides a perspective.
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TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Baokai Zhang,Yanming Wang,Xian-Qiang Pei,Xiaoliang Zhang,Gai Zhao,Qihua Wang,Tingmei Wang
Solvent-free nanofluids have attracted increasing attention in tribological applications due to their distinctive load-bearing lubrication mechanisms, which arise from the synergistic interaction between its surrounding corona/canopy structures. In this study, a nanofluid was developed by incorporating N,S-co-doped carbon dots (N,S-CDs) and Jeffamine M2070 into polyimide (PI) matrix. This composite reduced the COF by 61 % (0.15 ± 0.01) and the wear rate by 95 % (3 ± 0.1643) × 10 −6 mm 3 /N·m compared to pure PI. N,S-CDs adsorbed onto friction surfaces via -NH 2 and -COOH groups, enhancing interfacial bonding and raising peak interface temperature by 126 K. This promoted PI fragment graphitization and robust tribofilms formation. M2070 further smoothed the interface by filling voids. The work proposes a “core-resin interface with casing” strategy for tribological materials in high-load, precision applications.
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MOLECULES
·
2025
·Vol. 30
·期 17
·3475
·
IF 4.6
Xiaoqian Xu,Song Yang,Yixiang Wang,Ying Chen,Assa Aravindh Sasikala Devi,Feng Hu
Silver is a promising electrocatalyst for electrochemical CO2reduction reaction owing to its high selectivity and efficiency for CO production. However, it still faces a fundamental trade-off between reaction activity and stability. Here, we developed a three-dimensional coral-like porous silver (CP-Ag) catalyst through seed-assisted nanoparticle attachment synthesis, which creates a unique architecture featuring interconnected pores and stable grain boundaries (GBs) between constituent Ag nanoparticles (Ag NPs). Compared to normal Ag NPs, CP-Ag demonstrates superior catalytic performance, maintaining >90% Faradaic efficiency (FE) for CO across a wide potential range (−0.6 to −1.0 V vs. RHE) while achieving 2-times higher current density. Importantly, CP-Ag demonstrated an impressive long-term stability by sustaining nearly 90% FE for CO approximately 40 h at a current density of −50 mA cm−2in a flow cell. The enhanced catalytic performance arises from three factors: (1) the three-dimensional coral-like morphology increases accessible active sites and promotes charge transfer efficiency; (2) stable GBs between interconnected nanoparticles increase reaction activity; (3) more moderate binding on Ag (100) preferentially promotes *CO intermediate formation. Our findings highlight the importance of simultaneously engineering both morphological and crystallographic features to optimize silver catalysts for CO2conversion.
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Bioactive Materials
·
2025
·
IF 20.3
Yinhe Han,Lina Guo,Mingqi Wang,Zhen Cao,Xu Zheng,Xinyu Wang,Lingling Jin,Xiaoqing Wei,Xiuli Wang,Jie Zhao
Interactions among neurons, microglia, and endothelial cells (ECs) —the principal components of the neurovascular unit (NVU)—are vital for maintaining central nervous system (CNS) homeostasis and are implicated in numerous neurological disorders. However, mechanistic insights into their crosstalk remain limited due to the lack of physiologically relevant in vitro models. In this study, we present an improved 3D vascularized tri-culture model that integrates human-induced neural stem cells (hiNSCs), human vascular organoids (hVOs), and microglia within a geometrically engineered silk fibroin scaffold. This platform effectively recapitulates critical features of the native CNS microenvironment, including spatial neurovascular patterning and cell-type-specific interactions. Within this model, hVOs significantly promoted neuronal differentiation of hiNSCs, resulting in extended axonal networks and improved neurovascular alignment. Microglial effects were found to be phenotype-dependent: both resting (M0) and pro-inflammatory (M1) microglia inhibited hiNSCs differentiation and vascular development, with M1 cells exerting the strongest suppressive influence. In contrast, anti-inflammatory (M2) microglia displayed the least inhibitory effect and even modestly supported neurovascular maturation. Mechanistic studies revealed that M2 microglia cooperate with hVOs via the stromal cell-derived factor 1 (SDF-1)/C-X-C chemokine receptor type 4 (CXCR4) signaling axis to promote neuronal differentiation. To our knowledge, this represents the first demonstration of SDF-1/CXCR4-mediated immune-neurovascular interaction within a human tri-culture system. Thereafter, this 3D vascularized co-culture model provides a physiologically relevant in vitro platform to investigate neuroimmune and neurovascular interactions. It holds broad potential for mechanistic studies in neurodevelopment and neurodegeneration, drug evaluation, and the development of regenerative therapies.
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高影响因子
MOLECULES
·
2025
·Vol. 30
·期 16
·3388
·
IF 4.6
Shefeng Li,Pengyi Zhao,Ziyang Liu,Chang Wang,Linling Wang,Siyu Ding
Microwave-assisted processing has shown tremendous promise in accelerating chemical reactions and reducing energy consumption through targeted dielectric heating. This study develops MOF-derived Mn-Co and Ce-Co oxide catalysts for energy-efficient benzene oxidation via microwave catalysis. The MnCo spinel oxides (particularly MnCo11-400) exhibit superior microwave absorption and catalytic activity due to enhanced oxygen mobility and tailored dielectric properties. Microwave irradiation enables rapid benzene mineralization over the MnCo11-400 catalyst, achieving 78% conversion at 30 W and complete conversion at 50 W, demonstrating exceptional energy efficiency at low power inputs. Microwaves significantly lower the reaction temperature compared to conventional thermal catalysis (ΔT = 100–250 °C). Stability tests confirm robustness over repeated power cycling (80% conversion retained after 3 × 1 h on/off cycles). Furthermore, an adsorption–microwave oxidation synergistic strategy is demonstrated: pre-adsorbed low-concentration benzene (1.15 mmol) at ambient temperature undergoes complete mineralization within 20 min under 30 W microwave irradiation. The intermittent microwave operation achieves equivalent benzene removal to continuous thermal processing while significantly reducing energy demand. This work establishes MOF-derived spinel oxides as high-performance microwave catalysts for low-temperature VOC abatement.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xiangyue Liu,Bing Li,Bin Duan,Shiying Guo,Shengli Zhang,Nan Meng,Zhaoyang Lou,Tong Liu,Junshan Hu,Hong Ge
Bi 2 O 3 phosphors co-doped with Yb 3+ and Er 3+ ions were successfully synthesized using a high-temperature solid-state method. Under 980 nm near-infrared laser excitation, Bi 2 O 3 : Yb 3+ /Er 3+ phosphors emit strong red light at 658 nm and weak green light at 551 nm. The optimal doping concentrations of Yb 3+ and Er 3+ are 0.10 and 0.02, respectively. This composition results in a red-to-green intensity ratio of 157.6. The red emission is primarily driven by energy transfer, promoting Er 3+ from the 4 I 13/2 level to the 4 F 9/2 level [Yb 3+ ( 2 F 5/2 ) + Er 3+ ( 4 I 13/2 ) → Yb 3+ ( 2 F 7/2 ) + Er 3+ ( 4 F 9/2 )]. The cross-relaxation process lowers the photon population in the 4 F 7/2 level and raises the photon population in the 4 F 9/2 level, leading to the occurrence of a single-band red emission. This phosphor also demonstrates promising potential for optical temperature sensing. It exhibits a maximum relative sensitivity of 3.02 % K −1 at 298 K.
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JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Junshan Hu,Yongqiang Li,Yuxiang Wu,Bin Duan,Keyu Guo,Fengyi Wang,Tong Liu,Wei Jin,Changchun Ding
Herein, a strong red upconversion phosphor of Yb 3+ /Er 3+ co-doped Sc 6 WO 12 was prepared by employing an equivalent substitution approach. When irradiated by 980 nm near-infrared laser, the phosphor emits strong 660 nm red light. The main excitation mechanism for its red upconversion luminescence emission is the energy transfer process, through which the Er 3+ ions is promoted from the 4 I 13/2 energy level to the 4 F 9/2 energy level. In addition, it is noteworthy that the multimode upconversion luminescence phosphor exhibits three different trends upon temperature change, and its upconversion emission integral intensity ratio exhibits a linear relationship with temperature in the range of 298 K–623 K. This special property makes the phosphor promising for applications in optical temperature measurement.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Liping Zhang,Huitong Li,Mengnan Duan,Weiwei Wang,Ran Mu,Zehua Pi,Yubin Shang
Coking reverse osmosis concentrates (ROCs) are characterized by a high organic content, complex composition, and difficulty in biological degradation. To achieve the zero liquid discharge (ZLD) strategy, ROCs need to be treated urgently. This work aims to prepare a modified catalyst under high-efficiency activated alumina (γ-Al 2 O 3 ) loaded with Fe and Co bimetals and to degrade m-cresol as a typical pollutant in actual coking ROCs. The results showed that Fe and Co metals were successfully loaded. Meanwhile, the catalyst enhances the reactive active sites, reduces the activation energy of the reaction, and improves the degradation efficiency. The degradation mechanism and removal process were investigated. The results showed that with the optimal conditions, as ozone dosage of 50 mg/L, gas flow rate of 400 mL/min, catalyst dosage of 30 g/L, and pH value of 9, the removal rates of COD, TOC, and UV 254 were 75.61 %, 56.22 %, and 84.14 %, respectively. This study provides a better treatment option for the degradation of m-cresols in coking ROCs.
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JOURNAL OF HYDROLOGY
·
2024
·
IF 5.9
Cui Gan,Zhaobo Luo,Chengyuan Su,Caixi Hu,Lei Tong,Jianbo Shi
The hyporheic zone is a crucial ecohydrological interface that plays a substantial role in the biogeochemical activity of iron and its mediated pollutant conversion. It is significantly influenced by dissolved oxygen and temperature fluctuations, but the combined effects and mechanisms are unknown. In this study, the co-transport behavior of goethite colloid (Goe), aqueous Fe 2+ and oxytetracycline (OTC) in groundwater discharge was simulated by column experiments. Our findings reveal that compared with room temperature (25 °C), the penetration rates of these compounds were generally promoted (0.1–7.0 % Goe, 14.1–43.1 % Fe 2+ , 0–19.6 % OTC) at low temperature (10 °C) but inhibited (0–5.0 % Goe, 0–51.0 % Fe 2+ , 0–3.8 % OTC) at high temperature (35 °C). At room temperature (25 °C), only 5 % of the Goe can penetrate the triadic transport system, where the Fe-OTC complex decreased the Zeta potential of Goe, hence improving its transport capacity. Compared with the penetration of individual Fe 2+ , the Fe 2+ transport was increased by 13.2 % due to the promoting effect of OTC on Fe redox cycling, whereas the electron transfer effect between Goe and Fe 2+ inhibited the transport by 46.6 %. The impact of μg/L OTC on the migration of Fe and Goe was dramatically diminished compared to the mg/L level. OTC was eliminated mainly by complex internal oxidation with Fe, weak adsorption, chemisorption, and hydroxyl degradation effects, but these were diminished at low temperatures while intensified at high temperatures. This study provides a deeper understanding of the intricate mechanisms of Fe and antibiotic transport in hyporheic zones, highlighting the significant roles of temperature and chemical interactions, particularly during seasonal changes.
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