CERAMICS INTERNATIONAL
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2025
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IF 5.6
Zhihua Zhao,Yang Dong,Xianghao Meng,Peijuan Wu,Jichao Wang
The present work focuses on developing a high-performance n-butanol detection system through heterojunction engineering of W 18 O 49 /CeO 2 nanocomposites, aiming to achieve superior sensitivity and selectivity in volatile organic compound monitoring. The solvothermal-mediated fabrication of CeO 2 nanocrystals served as the foundation for hierarchical assembly of the W 18 O 49 /CeO 2 heterostructured sensing layer. A comprehensive investigation was organized, encompassing discriminative selectivity analysis, durability testing, response profiling, response/recovery characterization under prolonged operational conditions. Experiment confirmed that the W 18 O 49 /CeO 2 heterojunction sensor achieved peak analytical performance at room temperature, exhibiting a response of 12.2 when exposed with 100 ppm n-butanol. In contrast, the pristine W 18 O 49 had a response of 2.6, and pristine CeO 2 showed negligible response. DFT results showed that the adsorption energy of n-butanol on the W 18 O 49 /CeO 2 composite was −1.092 eV, which was much stronger than that on pristine W 18 O 49 (−0.305 eV), indicating a more favorable adsorption process. Notably, the sensor achieved a detection threshold of 1 ppm n-butanol with a response magnitude reaching 23.5 %, indicating its capability for ultra-trace gas analysis. Collectively, these findings substantiate the W 18 O 49 /CeO 2 heterojunction architecture as a highly effective sensing platform for volatile organic compound (VOC) detection, with particular applicability to n-butanol gas monitoring in smart manufacturing environments. The superior sensing efficacy stems from the synergistic charge transfer mechanism at the heterointerface, validated by both experimental characterization and theoretical modeling.
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TETRAHEDRON
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2025
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IF 2.2
Jiahong Chen,Yuanyuan Huang,Nan Wang,You Zi
A bstract A practical and N-selective allylation of sulfenamides using Morita-Baylis-Hillman carbonates under Lewis base catalysis is reported. It features broad substrate scope, high chemoselectivity, and tolerance to various functional groups, affording diverse N-allylated sulfenamides in good to excellent yields. Gram-scale experiments confirm its scalability, facilitating the synthesis of bioactive molecules and expanding the utility of sulfenamide chemistry.
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Acta Biomaterialia
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2025
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IF 9.6
Kaiguo Xia,Guang Chen,Bingbing Hou,Zhe Wang,Yaqi Zhu,Yuexian Xu,Shanfu Zhang,Qiang Xuan,Yezi You,Zongyao Hao
A ureteral stent with strong resistance to proteins, bacteria, and multivalent ions is crucial for the safe treatment of urologic diseases. Generally, the proteins, bacteria, and multivalent ions present in urine tend to bind to the stent surface, leading to aggregation, nucleation, and subsequent stent encrustation. Stent encrustation can induce or exacerbate urinary tract infections and obstructions, thereby seriously harming kidney function. Although hydrophilic coatings on ureteral stents can reduce the binding of proteins, bacteria, and multivalent ions, encrustation still occurs. To date, preventing stent encrustation formation remains a significant challenge. Here, we grafted dense trimethylamine oxide (TMAO)-derived zwitterionic polymers onto the stent surface via a branched amplification strategy. These zwitterions can strongly bind water molecules, forming a stable hydration shell that repels proteins, bacteria, and multivalent ions from adhering to the surface of the polyurethane ureteral stent, thus rendering the stent anti-encrustation. The results showed that the TMAO-derived zwitterion-coated stents exhibited a significantly reduced encrustation weight (13.8% of the original polyurethane stent) and demonstrated good safety. This approach offers a promising method for enhancing stent encrustation resistance. Statement of Significance This study successfully developed a TMAO-derived zwitterionic coating on the surface of a polyurethane stent, creating a superhydrophilic surface with a minimal contact angle of 5.2 o . This surface effectively shields the stent from interactions with proteins, bacteria, and multivalent ions in urine, demonstrating favorable anti-protein adsorption and antibacterial adhesion properties. The superhydrophilic surface formed by the TMAO-derived zwitterionic coating on the stents (PTMAO-s) provides strong anti-fouling resistance and enhanced anti-encrustation properties. Under identical conditions, the encrustation resistance of PTMAO-s is approximately 7.2-fold greater than that of original polyurethane stents (PU), 3.6-fold greater than Bard commercial stents, and 2.1-fold greater than betaine-coated stents (PSBG-s).
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PubMed
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REGULATORY TOXICOLOGY AND PHARMACOLOGY
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2015
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IF 2.031
Dan Wan,Xihong Zhou,Chunyan Xie,Xugang Shu,Xin Wu,Yulong Yin
Iron is an essential trace element that is vital important in various biological process. A deficiency in iron could induce public health problem e.g. anaemia, while an overload could induce ROS production, lipid peroxidation and DNA bases modifications. In the present study, a new iron fortifier was synthesized, and its acute/sub-acute toxicity was investigated. According to the improved Karber's method, the median lethal dose (LD 50 ) of the ferrous N-carbamylglycinate in SD rat was 3.02 g/kg and the 95% confidence intervals were between 2.78 and 3.31 g/kg. No biologically significant or test substance-related differences were observed in body weights, feed consumption, clinical signs, organ weights, histopathology , ophthalmology, hematology, and clinical chemistry parameters in any of the treatment groups of ferrous N-carbamylglycinate at target concentrations corresponding to 150, 300, and 600 mg/kg/day for 28 days. The no observed adverse effect level (NOAEL) for ferrous N-carbamylglycinate was at least 600 mg/kg b.w. day in rats. In addition, no evidence of mutagenicity was found, either in vitro in bacterial reverse mutation assay or in vivo in mice bone marrow micronucleus assay and sperm shape abnormality assay. On the basis of our findings, we conclude that ferrous N-carbamylglycinate is a low-toxic substance with no genotoxicity .
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ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Yueyue Li,Yisheng Wang,Yingying Xiong,Xuejiao Liu,Yang Li,Ying Zhang,Haojie Lu
Human serum albumin (HSA), the most abundant plasma protein predominantly synthesized and secreted by the liver, harbors atypical N-glycosylation modifications at Asn68 and Asn123. Despite their potential biological relevance, the comprehensive characterization of these modifications remains limited. Here, we systematically characterized atypical N-glycosylation on HSA using a sialic acid linkage-specific derivatization strategy coupled with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS), identifying 35 N-glycans including 23 sialylated N-glycans distinguished sialic acid linkage isomers. LC-ESI-MS analysis further resolved 25 site-specific N-glycopeptides, establishing the most detailed HSA N-glycosylation profile to date and elucidating its structural diversity. Given the liver-specific origin of HSA, we further explored the clinical relevance of HSA glycosylation in serum samples from healthy controls (HC), liver cirrhosis (LC), and hepatocellular carcinoma (HCC) patients and found that HSA glycopeptides exhibited exceptional diagnostic accuracy in distinguishing LC from HCC patients (AUC = 0.906). These findings not only decode the complexity of HSA glycosylation but also validate its clinical utility as a liver-specific biomarker for HCC detection.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xu Liu,Jingzhe Li,Zewang Liu,Guang-zai Nong
The interfacial tuning of carbon materials is paramount to enhancing capacitive performance. Heteroatom doping significantly alters carbon materials' structural, electronic, and surface properties, improving their electronic conductivity and ion transport pathways. This process also introduces additional energy storage sites and improves structural stability to meet the requirements of advanced electrochemical energy storage systems. A N/Cl co-doped porous carbon material has been synthesised in this study. The material has a surface area of 1849.778 m 2 /g and a specific capacitance of up to 324 F/g at 0.5 A/g. Capacitance retention was as high as 89.69 % after 5000 cycles at 10 A/g. Furthermore, a symmetric supercapacitor based on BC121–800 exhibits an energy density of 11.6 Wh/Kg at a power density of 250.4 W/Kg. This study contributes novel strategies to enhance energy storage technologies.
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Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Wenhui Zhou,Boxu Dong,Shan Zhu,Fengxiang Ma,Ziqi Si,Likui Feng,Liang Zhang,Yue Zhao,Jiantao Zai,Xuefeng Qian
A Mo 2 C-bridged MoO x /N-doped carbon heterostructure (MoO x -Mo 2 C-N@C) synthesized via one-step calcination demonstrates exceptional photocatalytic activity for sulfur hexafluoride (SF 6 ) degradation, achieving a remarkable capacity of 2.12 mmol/g under UV irradiation, tenfold higher than commercial MoO 2 . The enhanced performance originates from synergistic interfacial electronic modulation: Mo 2 C channels create electron-deficient Mo sites that facilitate SF 6 adsorption and S–F bond cleavage, while N-doped carbon matrices promote charge separation and protect active centers against fluorine poisoning. This work presents an effective metal–carbon hybrid strategy for activating super-stable molecules through rational interface engineering.
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MATERIALS RESEARCH BULLETIN
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2025
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IF 5.7
Shengyuan Liang,Junjie Wang,Dunyan Jiang,Lijun Wang,Shikuo Li
Designing rational and lightweight magnetic-dielectric composites for efficient electromagnetic wave absorption remains a significant challenge. Herein, the FeCoNi metal-induced nitrogen-doped carbon nanotubes (FeCoNi@NCNTs) were synthesized though unique nanoconfinement strategy during carbon thermal reduction reaction. In confined environment, sufficient conditions were provided for the multidimensional growth of nanostructures. The mechanisms of carbon nanotube growth and electromagnetic wave absorption were further investigated. The FeCoNi@NCNTs exhibited a minimum reflection loss of -59.5 dB within the 2–18 GHz frequency range. Moreover, the composite achieved a minimum effective absorption bandwidth of 5.3 GHz at 2.0 mm. This work provides a new insight for preparing various magnetic-dielectric composites with rich absorption effects and broadband microwave absorption.
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ACS Applied Materials & Interfaces
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2015
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IF 6.723
Feng Liu,Yuecheng Cui,Lei Wang,Hongwei Wang,Yuqi Yuan,Jingjing Pan,Hong Chen,Lin Yuan
It is important to effectively maintain and modulate the bioactivity of protein-nanoparticle conjugates for their further and intensive applications. The strategies of controlling protein activity via “tailor-made surfaces” still have some limitations, such as the difficulties in further modulation of the bioactivity and the proteolysis by some proteases. Thus, it is essential to establish a responsive protein-nanoparticle conjugate system to realize not only controllable modulations of protein activity in the conjugates by incorporating sensitivity to environmental cues but also high resistance to proteases. In the work reported here, Escherichia coli (E. coli) inorganic pyrophosphatase (PPase) and poly(N-isopropylacrylamide) (pNIPAM) were both fabricated onto gold nanoparticles (AuNPs), forming AuNP-PPase-pNIPAM conjugates. The bioactivity-modulating capability of the conjugates with changes in temperature was systematically investigated by varying the molecular weight of pNIPAM, the PPase/pNIPAM molar ratio on AuNP, and the orientation of the proteins. Under proper conditions, the activity of the conjugate at 45 °C was approximately 270% of that at 25 °C. In the presence of trypsin digestion, much less conjugate activity than protein activity was lost. These findings indicate that the fabrication of AuNP-protein-pNIPAM conjugates can both modulate protein activity on a large scale and show much higher resistance to protease digestion, exhibiting great potential in targeted delivery, controllable biocatalysis, and molecular/cellular recognition.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Pengli Si,Xinxin Wang,Yajing Wang,Guangmeng You,Xueke Gu,Zheng Jiang,Jingdan Lei,Chao Wang
N-type PbSe-based materials have emerged as a research focus in medium-to-high temperature thermoelectric applications due to their high carrier mobility, stability across wide temperature ranges, and cost-effectiveness. However, simultaneously maintaining high carrier mobility while reducing lattice thermal conductivity remains a critical challenge for PbSe-based materials. Research demonstrates that constructing coherent interfaces optimizes charge carrier scattering, thereby maintaining high carrier mobility while achieving thermal conductivity reduction. In this work, after Cu 2 S alloying treatment, coherent nanostructured precipitates consisting of Cu 2 S (monoclinic phase) and PbS (cubic phase) are formed at grain boundaries. The lattice mismatch at the interface is maintained below 4.5%, which consequently leads to only a marginal reduction in charge carrier mobility. Meanwhile, Cu 2 S, as a dynamic electron donor, increases the carrier concentration. Additionally, the diffusion of Cu + ions introduces lattice disorder, which, in combination with the low- to mid-frequency phonon scattering from the nano-precipitates, significantly reduces the lattice thermal conductivity. As a result, a ZT value of 1.53 is achieved at 773 K. The Pb 1.02 Se-0.5% Cu 2 S composite prepared in this study exhibits superior thermoelectric performance compared to most n-type PbSe-based materials, demonstrating that the introduction of coherent nanostructures constitutes an effective strategy for enhancing the thermoelectric properties of n-type PbSe.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Haowen Chen,Kaiyi Luo,Pingping Qian,Yixiao Deng,An Li,Qiang Sun,Lei Yang,Yuquan Liu,Zhengshang Wang,Guang-Kun Ren,Qian Cao,Jun Tang
The donor effect of polycrystalline n-type bismuth telluride (Bi2Te3) during sample preparation usually results in the peak thermoelectric figure of merit (ZT) at temperatures above 400 K, severely restricting its application in the room-temperature (RT) range. A leap in RT performance requires innovative strategies that replace conventional methods of regulating point defects with limited effectiveness. We demonstrate excellent thermoelectric performance with an RT figure of merit, ZT = 1.2, and a maximum ZT = 1.3 at 325 K, by regulating the high-potential barrier heterointerfaces composed of La2O3 nanoparticles (NPs) and Bi2Te2.7Se0.3 (BTS). The created energy barriers at grain boundaries scatter and localize carriers through O–Bi ionic bonding and O–Te hybridization, enhancing the density of states in adjacent regions and leading to a rapid rise in the RT Seebeck coefficient (from 148.67 μV K–1 to 222.84 μV K–1 at 300 K). Another aspect of La2O3 NPs, as the second term of nano-oxide, introduces multiscale defect-scattering phonons, thereby enhancing thermal performance. Finally, at temperature difference ΔT = 10 K, a maximum output voltage and power, Vmax = 239.73 mV and Pmax= 10.50 mW, can be achieved with the fabricated TE module. Our findings underscore the full potential for promoting the performance of thermoelectric materials in the lower temperature region via high-energy barrier interface engineering.
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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
Jieming Chen,Yuchun Zhang,Yao Li,Peng Fu,Zhiyu Li
Pure TiO2 exhibits limited responsiveness to visible light, while the doping of Ti3+ significantly enhances its absorption efficiency in the visible spectrum, improving the efficiency of photogenerated electron utilization. However, during the direct reduction of TiO2 using NaBH4, the instability of surface Ti3+ ions and their susceptibility to oxidation in air limit their performance in photocatalytic applications. Nitrogen doping into TiO2 effectively addresses this issue, improving the stability of Ti3+ ions and significantly enhancing visible-light-driven photocatalytic activity. Experimental results indicate that reducing 1 g of TiO2 with 0.2 g of NaBH4, followed by calcination in an ammonia environment at 300℃, yields a catalyst with optimal visible-light photocatalytic hydrogen evolution activity, achieving a hydrogen production rate of 847.8 μmol h−1 g−1, representing a 177-fold enhancement over pristine anatase TiO2. After modification, the band gap of the catalyst decreased from 3.2 eV to 2.83 eV. This study elucidates the synergistic effects among Ti3+ species, nitrogen dopants, and oxygen vacancies in TiO2-based photocatalysts, demonstrating their crucial roles in enhancing visible-light-driven hydrogen evolution.
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