CARBON
·
2025
·
IF 11.6
Haoyuan Yang,Yichen Wang,Yuhong Cui,Ke Yang,Yuanzhi Jiang,Qian Ye,Yibo He,Xuqing Liu
The synergistic effect of multidimensional nanomaterials is an effective strategy to improve the tribological properties of base oils. Herein, an inorganic-organic nanocomposite comprising zero-dimensional g-C 3 N 4 quantum dots (g-CNQDs) and two-dimensional NUS-2 modified with cetyltrimethylammonium bromide (CCOF) is developed as an additive for oil-based lubricants. When 3.0 wt% g-CNQDs/CCOF is added as a lubricant additive, the average coefficient of friction and wear volume of PAO-10 base oil decrease from 0.172 to 6.21 × 10 5 μm 3 to 0.095 and 1.12 × 10 5 μm 3 , respectively. Moreover, CCOF and g-CNQDs feature abundant oxygen groups that promote adsorption and tribochemical reaction films on worn surfaces. These coherent tribofilms prevent direct surface contact and enhance interfacial interaction. Additionally, g-CNQDs can act as fillers to repair the worn surface, thereby improving lubrication performance. The PAO-10 base oil containing the g-CNQDs/CCOF nanocomposite demonstrates enhanced performance under various loads, frequencies, and temperatures. Additionally, CCOF and g-CNQDs possess plentiful oxygen-containing functional groups that can facilitate the formation of adsorption films and tribochemical reaction films composed of iron oxides and carbonitrides on the worn surface. The continuous and robust tribofilm prevents direct contact between friction pairs and enhances the interaction at the friction interface. Moreover, g-CNQDs can work as fillers to repair worn surface, thereby improving lubrication performance. The PAO-10 base oil containing g-CNQDs/CCOF nanocomposite shows improved performance under various loads, frequencies and temperatures. This work develops a unique g-CNQDs/CCOF nanocomposite as an additive to improve the lubrication performance of lubricant, providing a reference for exploiting novel lubricant additive.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.9
Yupei Chai,Lidan Cao,Yingxing Zhang,Junhong Wang,Duo Zhang,Cunfang Liu
A smart anti-corrosion and self-healing coating BTA@MSNs/g-C 3 N 4 @PDA was prepared base on mesoporous silica nanoparticles (MSNs) and graphite-phase carbon nitride (g-C 3 N 4 ) composites as nano-containers and loaded the corrosion inhibitor benzotriazole (BTA), as well as wrapped polydopamine (PDA). The structure and properties of the composites were characterized by SEM, TEM, EDS, FT-IR, XPS, XRD and N 2 physical adsorption. The release behaviors of BTA were tested by UV–Vis spectroscopy. Then these prepared materials were mixed to epoxy resin E-51 (EP) and cured to obtaining three protective coatings of MSNs/g-C 3 N 4 -EP, BTA@MSNs/g-C 3 N 4 -EP, and BTA@MSNs/g-C 3 N 4 @PDA-EP. These coatings were used as working electrodes to investigate their anti-corrosion and self-healing properties via electrochemical impedance spectroscopy (EIS), salt spray test, SEM and EDS. Test results indicate that the smart coatings presented better corrosion-resistant and self-healing performance. After being soaked in 3.5 % NaCl solution for 30 days, the |Z| 0.01Hz value of the coating BTA@MSNs/g-C 3 N 4 @PDA-EP could still reached to 10 6 , two orders of magnitude higher than that of the coating MSNs/g-C 3 N 4 -EP. Furthermore, the self-healing mechanism of these coatings was also better explored. In summary, this study will provide feasible paths and guidance for the preparation of intelligent anticorrosive self-healing new materials.
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Qiyao Chen,Sihui Huang,Jiahuan Zhou,Jiahui Chen,Dandan Wang,Qingqing Zhang,Xiaoshun Zhou,Yong Shao
Adenosine (Ade) is an important bioactive molecule in energy metabolism, signaling, immune regulation, and cardiovascular protection, etc. Ade in serums during ischemic episode can abnormally reach to a few to tens of μM from the normal nM level. The currently developed aptamer methods for Ade and adenylate are widely used as the straightforward and cascade biosensing models. However, an ideal label-free method with high Ade-over-adenylate selectivity, turn-on fluorescence even at a few of μM level, and reference correction from sample matrix fluctuation has not yet been elucidated. Herein, we found that duplex can communicate with a G-quadruplex (G4) chaperone to light up the green tautomer fluorescence of 3-hydroxyflavone based on the excited state intramolecular proton transfer (ESIPT) process, while the normal blue reference emission at shorter wavelength is not affected. Accordingly, engineering the duplex with a newly screened aptamer also succeeded in favoring the ESIPT emission via responding to Ade, while the densely packed negative charge density in the G4 chaperone inhibited adenylate association with the aptamer. Therefore, the G4 chaperone is bifunctional. The aptamer-G4 ensemble was effectively applied to the serum analysis without any interference from the serum matrix. The specificity of aptamer-G4 ensemble towards Ade was also confirmed by adenosine deaminase (ADA), which was able to monitor the Ade dynamics and the ADA activity. It is expected that our method could be applied to other aptamers by chaperoning an appropriate G4 structure.
✓ 已验证
DOI
PubMed
高影响因子
VETERINARY MICROBIOLOGY
·
2026
·
IF 2.7
Yuqing Tan,Ze Li,Shijiao Huan,Yaqin Liu,Hengming Liu,Shenglan Liu,Zhixin Lei
Background Glaesserella parasuis ( G. parasuis ) is the core pathogen of porcine respiratory disease syndrome (PRDC), and the co-evolution of its drug resistance and virulence has seriously threatened the biosecurity of the global pig farming industry. Objective This study aims to clarify the core function of neuraminidase (NanH) in the formation and pathogenic mechanism of G. parasuis resistance and explore its feasibility as a novel therapeutic target. Method Drug-resistant strains were induced by tildipirosin combined with florfenicol (MIC increased to 16 μg/mL), and the mechanism of drug resistance was systematically analyzed by transcriptomics, gene knockout and multi-model infection experiments. Result The activity of the ABC transport system in drug-resistant strains was enhanced, the virulence genes VapC and artM were upregulated, the smoothness of the cell wall increased, and host autophagy was significantly inhibited (LC3-II transformation decreased, P < 0.01 ). The nanH gene was highly expressed in drug-resistant strains. Its deletion ( ΔnanH ) reduced bacterial adhesion by 57 % ( P < 0.01 ), decreased mouse mortality by 70 % ( P < 0.005 ), and inhibited the transcription of COX-2 and TNF-α. The autophagy-targeted chimeric (NanH-AUTAC) designed based on the targeted protein degradation (TPD) strategy achieved a degradation rate of 60 % for NanH-EGFP at 40 μM. Conclusion NanH is a key regulatory factor in the co-evolution of G. parasuis drug resistance and virulence, and can serve as a potential target for anti-infection treatment. The "disarming" strategy based on TPD provides a new direction for dealing with drug-resistant bacterial infections.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2019
·
IF 3.073
Lelin Zeng,Qian Liu,Mang Lu,Enxiang Liang,Guoxiang Wang,Wenyuan Xu
Natural loofah sponge is a low cost adsorbent, but its adsorption property needs to be improved. A grafted copolymer of poly(acrylonitrile-g-loofah) [poly(AN-g-loofah)] was prepared using cericammonium nitrate (CAN) as initiator. The poly(AN-g-loofah) was further functionalized into a amidoxime-modified poly(AN-g-loofah), which was characterized through FT-IR, X-ray diffraction, and thermogravimetric analysis. The adsorption capacity of amidoxime-modified poly(AN-g-loofah) was investigated under different adsorption conditions. Amidoxime-modified poly(AN-g-loofah) with approximately 70% conversion of the nitrile group could adsorb 51.40 mg/g Cu 2+ , which is more than two times higher than that obtained by previous studies. The modified Langmuir isotherm model and pseudo-second-order model fitted well with the Cu 2+ adsorption data. A good adsorption amount of Cu 2+ was obtained after five adsorption–deadsorption cycles. Hence, amidoxime-modified poly(AN-g-loofah) could be used as a novel substance for waste water treatment in industrial level.
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 15
·期 3
·2528-2538
·
IF 1.5
Wenhui Geng,Mengmeng Zheng,Dan Chen,Xianwen Wang,Zekai Zhang,Yishan Lin,Dongqin Cai,Huiqin Li,Guobo Huang,Yanxian Jin Yu,Binbin Yus
Palladium catalyst (Pd) are made attention to application in alcohol fuel cells due to unique performance, as well as the resource abundance and low cost, but the catalyst performance and stability of the catalysts are still not satisfied. In this article, the novel PdFe/B-N-G catalysts with the double element alloying and dual-doping for ethanol electro-oxidation are successfully prepared and determined by XRD, TEM and XPS. TEM results reveal a relatively uniform and high dispersion of Pd particles is observed on PdFe/B-N-G catalyst. The XPS analysis indicates that Pd(0) contents of the PdFe/B-N-G catalyst are increased on account of the B, N-doping effect. Being explored as the catalyst to the ethanol oxidation reactions, the PdFe/B-N-G catalysts exhibit the better electrocatalytic activity with higher current densities and catalyst stability compared to those of PdFe/G and Pd/B-N-G, which can be attributed to the synergistic effect of the enhanced PdFe alloying and the B, N-doping, that can produce more activity sites dispersing on the surface of graphene. Thus, the novel PdFe/B-N-G catalysts can be the potential alternate in alcohol fuel cells.
研究领域:
电化学
·
纳米催化
·
能源材料
·
燃料电池
·
表面科学
✓ 已验证
DOI
高影响因子
TURKISH JOURNAL OF CHEMISTRY
·
2022
·Vol. 44
·期 2
·393-408
·
IF 1.151
WU YIBO,LI FUXIANG,XUE JIANWEI,LV ZHIPING
A series of alkylorganotin-based catalysts (Sn-g-C$_{3}$N$_{4}$/AC) was prepared by wet impregnation in ethanol using different g-C$_{3}$N$_{4}$ precursors and alkylorganotin compounds. The structure, texture, surface composition, and adsorption properties of the as-prepared catalysts were extensively characterized. Then, the obtained samples were evaluated for their catalytic performance in hydrochlorination of acetylene. The results provided by the X-ray photoelectron spectroscopy, acetylene temperature-programmed desorption, and HCl adsorption confirmed the nature of the active sites (i.e. Sn-N$_{x}$ ) involved in the reactant adsorption, and hence in the improved catalytic performance. These active sites were also related to the improved lifetime of alkylorganotin-based catalysts in the hydrochlorination of acetylene. At a constant reaction temperature of 200 °C with an acetylene gas hourly space velocity (C2H2-GHSV) of 30 h$^{-1}$, Sn-g$_{1}$ -C$_{3}$N$_{4}$/AC-550 exhibited the highest acetylene conversion (~98.0%) and selectivity toward the vinyl chloride monomer (>98.0%). From the catalytic test results, it was reasonably concluded that the hexamethylenetetramine is the most suitable N precursor, as compared to the dicyandiamide and urea, to prepare high-performance catalysts. From the BET specific surface area of fresh and used catalysts, it was suggested that, in contrast to dicyandiamide and urea, hexamethylenetetramine could delay the deposition of coke on alkylorganotin-based catalysts, which is reflected by the extended lifetime.
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Siting Pan,Xuan Wu,Xiaoming Li,Jiangfu Zheng
OVs-UCN was synthesized by oxygen pre-doping and N 2 calcination. • OVs accelerated charge separation and interfacial transfer. • CIP removal reached nearly 99% within 60 min in the PMS/Vis system. • 1 O 2 -dominated non-radical oxidation governed CIP degradation. • OVs-UCN showed real-water applicability and reduced effluent toxicity. Developing green and pollution-free high-performance photocatalysts remains the key to achieving efficient pollutant degradation. In the study, we developed an oxygen pre-doping followed by calcination induced nitrogen elimination strategy to synthesize oxygen-vacancies ultrathin g-C 3 N 4 (OVs-UCN). The tunable layered structure substantially shortens the migration pathway of electrons from the interior in the catalyst to its surface. Importantly, construction of OVs effectively enhances visible-light absorption and modulates the band structure for promoting the photogenerated carriers. Experimental results demonstrate that OVs-UCN removes nearly 99% of ciprofloxacin (CIP) within 60 min, exhibiting significantly superior photocatalytic activity compared with unmodified g-C 3 N 4 . Quenching experiments reveal that CIP degradation is dominated by the synergistic effects of singlet oxygen, holes, and superoxide radical. Moreover, OVs-UCN retains excellent applicability across a wide pH range and in various real-water matrices. This work provides new perspectives for the rational design of heterogeneous photocatalysts and emphasizes the practical promise of vacancy modification strategy for antibiotic wastewater remediation. Download: Download high-res image (133KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Tianguang Liang,Lijing Wang,Pengnian Shan,Yuhan Wang,Pengyu Kang,Yi Cai,Bo Xiong,Feng Guo,Weilong Shi
Against the backdrop of global efforts to develop sustainable hydrogen fuels, semiconductor-based photocatalytic hydrogen production suffers from insufficient light absorption and inefficient charge separation. Rational structural regulation of photocatalysts is thus required to improve hydrogen evolution performance. Herein, laver-derived biochar was synthesized via calcination and ultrasonic-assisted impurity removal, and then co-calcined with urea through high-temperature polymerization to fabricate carbon-doped black g-C 3 N 4 (BCN) with excellent photothermal performance. Upon 100 s of full-spectrum irradiation from a 300 W xenon lamp, BCN-1.0 achieves a surface temperature of 72.4 °C, much higher than the 48.7 °C of pristine yellow g-C 3 N 4 (YCN). Irradiation endows BCN with improved light-harvesting and heat-release capabilities, which promotes non-radiative relaxation, elevates local surface temperature, and yields a photothermally-assisted hydrogen evolution rate of 9.58 mmol g −1 h −1 , 1.5 times that of YCN (6.39 mmol g −1 h −1 ). The reaction rate hits 15.56 mmol g −1 h −1 when the solution temperature is raised to 45.5 °C. Photoluminescence (PL) and time-resolved photoluminescence (TRPL) characterizations verify that structural modulation of g-C 3 N 4 generates abundant defect sites that serve as non-radiative recombination centers. The energy of trapped charge carriers dissipates through phonon scattering and local lattice vibrations, which suppresses fluorescence emission, enhances intramolecular vibration and non-radiative relaxation, drastically increases local surface temperature, and accelerates hydrogen evolution. This work delivers a pioneering investigation on the application potential of black g-C 3 N 4 for photothermal-assisted photocatalytic hydrogen evolution. Download: Download high-res image (225KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 29
·15588-15602
·
IF 3.9
Zhang Yanji,Zhu Qicai,Yang Siyi,Han Zhuoxi,Xu Zhiyong,Xie Yuhui,Wu Feng,Mei Yi,Xie Delong,Feng Dong
A key challenge in lightweight broadband electromagnetic
wave (EMW)
absorption is balancing strong attenuation, good impedance matching,
and structural integrity─excessive conductivity enhances dielectric
loss but often causes severe surface reflection that blocks wave penetration.
Herein, a 3D x CuFe/GPC heterostructure was constructed
by anchoring bimetallic CuFe-MOF derivatives onto a G/BPNS/CNT hybrid
conductive framework, where G, P, and C represent graphite, black
phosphorus nanosheets, and carbon nanotubes, respectively. CuFe-MOF
derivatives provide magnetic-dielectric loss, BPNS introduce phosphorus-related
polarization sites, and graphite/CNT meshes build long-range conductive
pathways, with CNTs acting as one-dimensional bridges. This coordinated
design enables the optimized 0.1CuFe/GPC composite to achieve an RL min of −46.3 dB at 2.1 mm and an EAB
of 4.03 GHz at 1.3 mm. RCS simulations based on a PEC plate model
show an RCS reduction exceeding 30 dB. Beyond EMW absorption, 0.1CuFe/GPC
serves as a microwave-to-thermal transducer for rapid expandable polystyrene
(ePS) foaming, producing lightweight multifunctional foams with robust
mechanical integrity. This work provides a practical route toward
integrated electromagnetic protection and lightweight structural-functional
materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 7
·180
·
IF 3.5
Ali Zubair,Khan Iltaf,Wang Chunjuan,Ali Farman,Mujahid Laiba,Zaman Saeed,Arif Umar,Chen Xiaohu,Ali Nisar
Dyes represent a major class of water pollutants worldwide, posing significant threats to aquatic ecosystems and the environment due to their discharge into industrial wastewater without treatment. Thus, before releasing organic colors and their derivatives into rivers, they must be degraded using heterogeneous photocatalysts. Similarly, burning fossil fuels releases massive amounts of CO 2 into the atmosphere, exacerbating global warming and environmental devastation. Herein, we report the design and fabrication of Ag/CdSe/g-C 3 N 4 (i.e., Ag/CdSe/CN) as a highly efficient photocatalyst for the degradation of Toluidine Blue dye and CO 2 conversion to value-added products. X-ray diffraction analysis confirmed the crystalline nature of the as-synthesized photocatalyst. SEM and TEM analysis revealed that Ag and CdSe nanoparticles are uniformly dispersed on the surface of a 2D sheet-like structure for CN. The photocatalytic performance of the photocatalysts was explored at different parameters such as dye and photocatalyst doses, pH, and time. The as-fabricated Ag/CdSe/CN photocatalyst revealed exceptional performance for Toluidine Blue dye degradation under visible light irradiation, with a notable 92.3% degradation at pH 13, which is remarkably higher than those of the CdSe/CN, CdSe, and CN photocatalysts. Additionally, the Ag/CdSe/CN photocatalyst revealed outstanding performance for visible light catalytic CO 2 conversion to CH 4 (i.e., 9 μmol g⁻ 1 h⁻ 1 ) and CO (28 μmol g⁻ 1 h⁻ 1 ), in comparison to the reference samples. This work will provide a new route for the design and fabrication of highly efficient photocatalysts for environmental applications. Graphical abstract Graphical abstract showing the design of Ag/CdSe/g-C 3 N 4 nanocomposite for CO 2 conversion and dye degradation
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yue Li,Ping Liu,Xiaoxue Han,Longyu Guo,Haiyan Jiang,Yongchao Ma
A heterojunction with g-C 3 N 4 @Zn/Eu-MOF covalent interface was synthesized. • g-CN@MOF can be used for photocatalytic degradation and fluorescence detection of ofloxacin. • Efficient removal of ofloxacin in milk by g-CN@MOF foam. • g-CN@MOF can detect ofloxacin residues in milk through smartphone-assisted color recognition. Ofloxacin (OFL) is widely used in medicine and animal husbandry, and its residues in milk raise substantial food-safety concerns. Herein, a dual-functional covalently coupled g-C 3 N 4 @Zn/Eu-MOF composite (g-CN@MOF) was constructed through a one-pot hydrothermal route. FTIR and XPS analyses indicated the formation of C N C O linkages between g-C 3 N 4 and the MOF, yielding an interfacially coupled type-II heterojunction that promoted charge separation. The optimized g-CN@MOF-30 achieved 69.21% removal of 10 mg L −1 OFL within 120 min under visible light, with •O 2 − and •OH identified as the dominant reactive species. Meanwhile, the fluorescence intensity ratio F 440 /F 595 showed a linear response to OFL over the range of 0–100 μM, affording a detection limit of 0.011 μM through an IFE-dominated ratiometric sensing mechanism. After immobilization in sodium alginate foam, the composite exhibited convenient recyclability and enabled OFL removal from pretreated milk samples, while smartphone-based RGB analysis provided rapid visual semi-quantification with recoveries ranging from 100.3% to 109.9%. Download: Download high-res image (269KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）