Scientific Reports
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2026
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IF 4.9
Pei Shuchen,Yan Kangli,Cai Shaoyu,Hou Yinjun,Luo Kang,Xiang Pu,Peng Yang
This study demonstrates a one-step hydrothermal synthesis of bright yellow phosphorus-doped carbon quantum dots (P-CQDs) using Caesalpinia sappan L. as carbon source. Comprehensive characterization through TEM, XPS, UV-Vis and FTIRspectroscopy confirmed the successful formation of P-CQDs. The obtained P-CQDs exhibited exceptional selectivity and was capable of detecting ciprofloxacin across a wide linear range of 0.01–0.1 µM, with a LOD determined to be 2.06 nM. Antimicrobial assays revealed MIC values of 7.14 µg/mL and 8.33 µg/mL against S. aureus and E. coli , respectively. Practical application studies confirmed their efficacy for rapid CIP detection in milk samples, establishing a novel sensing platform for food safety monitoring. This work provides valuable insights into the multifunctional applications of carbon dots in food chemistry and biomedical fields.
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Communications Chemistry
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2026
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IF 6.9
Hu Jun,Liu Jin,Zhu Yifeng,Sun Penghui,Deng Ao,Lv Chaojia,Xu Liangxu,Sun Fengxia,Li Lei,Tian Yongjun
The evolution of calcium carbonate in subduction zones exerts profound effects on Earth’s long-term climate dynamics and planetary habitability. Here, we report the first experimental study to elucidate the influence of aluminum oxide particle size on carbonate stability under high pressure-temperature ( P-T ) conditions using a piston-cylinder press. CaCO 3 remains thermodynamically stable across the investigated P-T conditions when coexisting with micron-sized Al 2 O 3 and Al(OH) 3 . In contrast, Al 2 O 3 nanoparticles destabilize calcium carbonate at 0.5–2.8 GPa and 350–1050 °C, forming CaAl 4 O 7 , CO 2 , and trace graphite. Our results reveal that the grain size effect of Al 2 O 3 strongly regulates calcium carbonate stability in subduction-zone environments, driven by ultrahigh specific surface areas and elevated defect densities inherent to nanoparticles. This work fundamentally revises the current understanding of the spatiotemporal distribution of decarbonation in this region, yielding a pattern of shallower, more heterogeneous carbon release.
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MICROCHIMICA ACTA
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2026
·Vol. 193
·期 5
·303
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IF 5.4
Fan Ruitian,Guo Jinyu,Peng Minhui,Ye Jianming,Lai Ping,Qiu Bin,Wang Yong,Wong Kwok-yin,Hu Shuisheng
Thrombomodulin (TM), a transmembrane glycoprotein, is a crucial biomarker for diagnosing cardiovascular diseases (CVDs). Highly sensitive and selective detection of TM is indispensable for achieving an early diagnosis of CVDs. In this work, a novel lanthanide-based metal-organic framework nanosheet (Eu-MOF NS) was synthesized via the solvothermal method. The obtained Eu-MOF NS exhibited the distinctive fluorescence of lanthanide metals when excited (375 nm), which could be quenched by 4-nitrophenol (4-NP) (absorption range of 375–425 nm) through the inner filter effect but not by 4-nitrophenyl phosphate (PNPP) (absorption range of 300–325 nm). Based on this, an immunofluorescence sensor was established. In the presence of TM, an enzyme-linked immune reaction triggers the formation of a capture antibody/TM/detection antibody sandwich complex, of which the alkaline phosphatase (ALP) conjugated to the secondary detection antibody could hydrolyze PNPP to 4-NP, leading to the disappearance of fluorescence. In contrast, when TM is absent, no 4-NP is produced, and the fluorescence of Eu-MOF could be detected. The sensor exhibited a satisfactory linear response to TM concentrations ranging from 20 pg mL⁻¹ to 1 × 10⁷ pg mL⁻¹, with a limit of detection (LOD) of 9.6 pg mL⁻¹. The proposed immunoassay demonstrated excellent stability, selectivity, and anti-interference capability, offering a promising new benchmark for the clinical practice of early CVDs diagnosis.
Section
Graphical
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 10
·761
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IF 3.2
Wang Yongyuan,Li Xuyin,Xu Chaoyong,Cao Jianchun
Expanding the stable voltage window and specific capacitance of supercapacitor electrode materials remains a key scientific challenge due to the low energy density of supercapacitors. In this study, starting from the problem of low specific capacitance caused by the limited electron transfer rate due to the low conductivity of MnO 2 , a simple and economical hydrothermal method was used to doping different contents of Nb 5+ ions, which replaced some Mn 4+ ions in the α-MnO 2 lattice, thereby causing certain changes in the charge density and band structure of α-MnO 2 , and effectively improving its conductivity. In addition, Nb 5+ -doped α-MnO 2 effectively alters its morphology and surface area, providing a large surface area for ion and electron transport. The optimized Nb-MnO 2 electrode has a voltage window widened from 0.8 V to 1.2 V in a 1 M Na 2 SO 4 electrolyte, with a specific capacitance of 587 F/g with in the 1.2 V wide voltage window, while the undoped MnO 2 has a specific capacitance of only 131 F/g. A 2 V asymmetric supercapacitor is constructed with activated carbon AC as the negative electrode, providing a high energy density of 57 Wh/kg at a power density of 1010 W/kg in a 3 M KOH electrolyte. In addition, at a current density of 5 A/g, the capacitance retention rate of 84.85% was maintained after 5000 charge–discharge cycles. This work is a valuable foundation for the future exploration of wide voltage window and high-performance aqueous electrolyte asymmetric supercapacitors.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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2026
·Vol. 132
·期 5
·384
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IF 3
Rong Fei,Li Yuxuan,Xu Jingrui,Wang Ji,Li Yuqing
Bisphenol A (BPA), a pervasive endocrine disruptor in plastics, poses serious risks to human health and the environment. Surface-enhanced Raman spectroscopy (SERS) provides high sensitivity and label-free detection. However, conventional substrates often exhibit heterogeneous hotspot distribution and lack molecular selectivity, limiting their reliability in complex matrices. Herein, combining the molecular imprinting specific recognition capability with the electrospun nanofiber large surface area, we present a molecularly imprinted nanofiber SERS substrate for the rapid, sensitive, and selective BPA detection. Using BPA as the template, the substrate achieved rapid adsorption equilibrium within 5 min, high capacity, and strong selectivity. Response surface optimization identified the optimal fabrication parameters, yielding a normalized enhancement factor of 4.89. Coupled with partial least squares regression, the system enabled accurate quantification of BPA over the range of 2 × 10 − 8 -6 × 10 − 7 mol/L, with excellent linearity (R² = 0.997) and prediction error below 2 mg/L. This strategy establishes a robust and generalizable platform for highly sensitive, selective, and on-site detection of BPA, offering broad potential in food safety, environmental monitoring, and public health.
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Scientific Reports
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2026
·
IF 4.9
Shi Minke,Wang Jiarui,Guo Qihan,Wang Jiayu,Sarengaowa,Ji Yaru,Xiao Ying,Feng Ke
Stem lettuce is a nutritious vegetable rich in dietary fiber, vitamins, and bioactive compounds, but fresh-cut processing accelerates browning, oxidative stress, and quality deterioration during storage. This study investigated the effects of ethanol vapor on browning inhibition, antioxidant capacity, and reactive oxygen species (ROS) metabolism in fresh-cut stem lettuce. Samples were treated with ethanol vapor at 0, 0.5, 1.0, and 2.0 mL/L and stored for 12 days. Among the treatments, 0.5 mL/L ethanol vapor most effectively delayed browning by suppressing the activities of peroxidase, polyphenol oxidase, and phenylalanine ammonia-lyase, while reducing the accumulation of superoxide anion radicals and hydrogen peroxide. This treatment also enhanced antioxidant defense systems by increasing the activities of superoxide dismutase, catalase, ascorbate peroxidase, and glutathione reductase, as well as non-enzymatic antioxidant capacity, as indicated by elevated FRAP, DPPH, and ABTS scavenging activities. By the end of storage, FRAP and DPPH values in the 0.5 mL/L group were approximately 1.8 and 2-fold higher than those of the control. Overall, ethanol vapor at 0.5 mL/L effectively alleviated oxidative stress, maintained ROS homeostasis, and delayed enzymatic browning, demonstrating its potential as a practical preservation strategy to improve postharvest quality and extend the shelf life of fresh-cut stem lettuce during cold storage.
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Nature Communications
·
2026
·
IF 18.1
Qin Fanglu,Liu Haiyang,Yang Aosai,Liu Yilin,Wang Xuanji,Sun Yue,Zhou Xinyi,Sofer Zdenek,Zhou Jiayuan,Liu Xue,Liu Sheng,Zhang Vanessa Li,Liu Xiaoze,Gao Weibo,Yu Ting
Emerging two-dimensional magnetic semiconductors represent transformative platforms to explore magneto-optics and opto-spintronic applications. Though two-dimensional opto-spintronics has attracted tremendous research efforts in spin-dependent photodetectors and non-volatile memory components, the realization of one core application - spin-modulated light-emitting device - remains elusive so far. Here, we successfully realize prototype spin-modulated light-emitting device integrated with a two-dimensional semiconducting magnet chromium sulfide bromide, demonstrating considerable electroluminescence down to bilayers. Intriguingly, it's discovered to be directly manipulated by spin-flip and spin-canting transitions. Notably, the intrinsic carrier-tunable interlayer magnetic coupling in chromium sulfide bromide enables electroluminescence to actively amplify magnetic hysteresis (via spin-flip) and continuously tune magnetic order (via spin-canting) with robust anisotropy, establishing a connection between carrier injection, magnetic phase transitions, and optical emission. The prototype demonstration of spin-modulated light-emitting device establishes an indispensable scheme of opto-spintronic devices leveraging two-dimensional spin transitions and strong excitonic effects, presenting a critical step towards integrated two-dimensional opto-spintronics.
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Nature Communications
·
2026
·
IF 18.1
Hong Hu,Yang Xinru,Wang Yiqiao,Wei Zhiquan,Li Dedi,Guo Xun,Wang Yanbo,Nian Qingshun,Zhang Shaoce,Wang Shixun,Wang Shengnan,Li Shimei,Zhang Dechao,Xiong Qi,Yang Hui,Zhi Chunyi
Organic electrode materials, despite their elemental abundance, environmental friendliness, and design flexibility, often suffer from limited electronic and ionic conductivities, which restrict their practical applications. Here, we present a universal thiourea coupling strategy that improves both electron and ion transport in quinone-based organic electrodes. Taking phenanthrenequinone as a representative example, thiourea incorporation increases the electron density of the quinones and improves the overall electronic conductivity of the electrode material. Meanwhile, thiourea establishes continuous proton-transport pathways, enabling proton-dominated redox reactions via a Grotthuss-type hopping mechanism. As a result, zinc batteries employing the coupled electrode exhibit stable cycling behavior over 6000 cycles at a low conductive carbon content (10 wt%) and maintain reliable operation in pouch-cell configurations under high mass loading conditions of 20 mg cm –2 . In addition, the applicability of this molecular coupling strategy is demonstrated across multiple quinone systems, paving that path towards practical organic electrode materials.
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BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
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2026
·
IF 1.7
Choe Chung-Jin,Kim Tong-Ryul,Mun Hye-Gyong,Kim Jong-Su,Pak Chol-Jin,Pak Kang-Chol,Hwang Kyung-Min,Ryu Ung-Ryol,Kim Jong-Su
This study demonstrates a circular strategy by converting spent nickel-loaded humic acid-coated magnetite (Ni-HA@Fe 3 O 4 ) adsorbent into a value-added supplement for anaerobic digestion (AD) of Tofu wastewater (TW). The spent Ni-HA@Fe 3 O 4 composites were generated through nickel removal from synthetic nickel wastewater using synthesized HA@Fe 3 O 4 , yielding materials (R-0 to R-8) with nickel content declining from 68.48 to 49.68 mg·g⁻¹ over eight regeneration cycles. In batch AD of tofu wastewater (TW), the spent adsorbent (R-0) substantially enhanced biomethane production. Kinetic analysis using the modified Gompertz model showed a 2.54-fold increase in biomethane production potential ( G m ) relative to the control, and outperformed nickel-only and HA@Fe 3 O 4 -only groups by factors of 1.41 and 1.49, respectively. Correspondingly, the maximum daily biomethane production rate R m was elevated by 2.73-, 1.41-, and 1.44-fold, while the lag phase ( λ ) was reduced by 2.73-, 1.59-, and 1.84-fold compared to the same groups. Although repeated regeneration gradually diminished efficacy, all experimental groups (R-0 to R-8) still improved the biomethane production potential compared to the control group. These results confirm that spent Ni-HA@Fe 3 O 4 can be effectively utilized as an additive for AD, offering a sustainable route that integrates wastewater treatment, solid waste management, and enhanced bioenergy recovery.
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TRANSACTIONS OF TIANJIN UNIVERSITY
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2026
·
IF 7.8
Yin Chengcheng,Zhao Songfang,Duan Guangbin,Zhao Degang,Wang Jieqiang,Yang Shuhua
Conductive hydrogels are vital components in modern electronics and show great promise for wearable sensors. However, their practical use is often limited by the difficulty of balancing mechanical properties and ionic/electronic conductivity. Herein, a dimethyl sulfoxide (DMSO)–regulated polyvinyl alcohol/guar gum (PVA/GG) dual-network conductive hydrogel (D-PVA/GG) was developed. The pre-shielding of intramolecular hydrogen bonds by DMSO induces extended polymer chain conformations, promoting the formation of a robust network and increasing the availability of hydrated hydroxyl groups. This mechanism significantly enhances both the mechanical performance and ionic conductivity of D-PVA/GG. Consequently, D-PVA/GG achieves a tensile strength of 3.82 MPa and a fracture strain of 815%. This strain is five times that of pure PVA hydrogels. D-PVA/GG also attained a conductivity of 1.66 S/m. These results demonstrate the synergistic optimization of the mechanical strength and conductivity. As a wearable sensor, D-PVA/GG can effectively monitor human motions in real time.
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JOURNAL OF ELECTRONIC MATERIALS
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2026
·
IF 2.8
Qin Xueying,Jiang Jia,Yin Shuang,Zhang Yeming,Wan Wei
The development of calcium copper titanate (CaCu 3 Ti 4 O 12 , CCTO) ceramics is often hindered by their high dielectric loss, which limits practical applications. In this work, CCTO powder with tailored micrometer-sized particles, synthesized via a Na 2 SO 4 molten-salt method, was used to fabricate nano-SiO 2 -doped ceramics through an environmentally friendly, water-based gelcasting process with glutinous rice flour as a nontoxic binder. This approach enabled stable slurry processing and effective microstructural control. The incorporation of 3.5 wt.% nano-SiO 2 yielded optimal dielectric performance, achieving a high dielectric constant of 8091 and a significantly reduced loss tangent of 0.08 at 1 kHz; this represents a 71.4% reduction in loss compared to the undoped sample. Microstructural and electrical analyses confirmed that the nano-SiO 2 predominantly segregated at the grain boundaries, forming a continuous amorphous insulating layer. This phase enhanced grain boundary resistivity, optimized the electrical heterogeneity, and substantially improved the frequency and temperature stability of the dielectric properties. This study demonstrates that nontoxic gelcasting combined with nano-SiO 2 doping is an effective and sustainable strategy for tailoring the dielectric properties of CCTO ceramics toward high-performance electronic applications by optimizing the internal barrier layer capacitor structure.
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CHEMICAL PAPERS
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2026
·
IF 2.7
Zhou HuiPing,Zhu Wei,Gao YingChun,Zhang YuanGuang
Dopamine (DA) as an important catecholamine neurotransmitter in the human body, plays a crucial role in regulating cognition, emotions, and physical movement. Therefore, quantitative detection of DA is of great significance. Recently, transition metal sulfides such as cobalt sulfide (CoS 2 ) receive widespread attention in the field of DA detection due to their low cost, excellent catalytic performance and structural stability. To achieve the optimal electrochemical response of CoS 2 /Nafion/GCE to DA, we systematically investigate the effects of electrode coating volume, electrolyte solution pH value, and scanning speed on DA detection performance. After optimizing the above parameters, the CoS 2 /Nafion/GCE sensor exhibited excellent peak current responses for the electrochemical detection of DA. It exhibits a linear response range spanning 1.0-300.7 µM, which can be divided into two distinct segments: 1.0-108.8 µM (LOD = 0.13 µM, S/ N = 3) and 108.8-300.7 µM (LOD = 1.3 µM, S/ N = 3). Furthermore, the sensor demonstrates specific electrocatalytic activity toward DA, endowing it with excellent detection selectivity even in the presence of high concentrations of interfering species such as ascorbic acid, uric acid, and glucose. In the detection of real samples of human urine, the recovery rate of DA is 95.47% to 101.78%. This result provides an ideal material platform for developing highly selective and low-cost DA detection sensors.
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