Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Zixuan Tian,Jialing Jiang,Lei Wang,Songtao Dong,Jing Luan,Hongbo Ju
BiCuSeO has attracted significant interest in the field of thermoelectric materials due to its layered crystalline structure, along with advantages such as abundant elemental availability, low thermal conductivity, and outstanding thermal stability. However, the inherently low electrical conductivity of BiCuSeOlimiting overall thermoelectricperformance. To address this, as an effective strategy to enhance thermoelectric performance, BiCuSeO was subjected to tri-element co-doping. Bi 1−3x (CaSrBa) x CuSeO (x = 0.0, 0.02, 0.03, 0.04, and 0.05) ceramics were synthesized using an advanced fabrication process that combined high-energy ball milling with hot-press sintering techniques. Substituting Ca 2+ , Sr 2+ , and Ba 2+ at the Bi 3+ sites effectively optimized the carrier concentration, increased the effective mass, and significantly enhanced the electrical conductivity from 9.67 to 91.55 S cm −1 . Notably, the power factor of the Bi 0.88 (CaSrBa) 0.04 CuSeO sample reached 476.54 μW m −1 K −2 at 323 K. and electrical conductivity. Simultaneously, the introduction of lattice defects through co-doping considerably enhanced phonon scattering, reducing the lattice thermal conductivity to 0.342 W m −1 K −1 for Bi 0.85 (CaSrBa) 0.05 CuSeO, compared with 0.447 W m −1 K −1 for the pristine sample. Consequently, a maximum dimensionless figure of merit ( ZT ) of 0.65 was achieved at 773 K for Bi 0.88 (CaSrBa) 0.04 CuSeO. These findings provide valuable insights into improving the thermoelectric performance of BiCuSeO-based materials through multi-element co-doping.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Wen-Jie Xu,Xue-Ning Cheng,Zhong-Xuan Han,Zhan-Jun Yang,Shu-Na Zhao,Hao Liu,Mi Li,Lin Jiang
Nitrocellulose (NC) is extensively utilized in military applications. However, its pronounced hygroscopicity and high specific surface area render it susceptible to thermal instability, posing a latent risk of spontaneous combustion. Conventional stabilization strategies involve the incorporation of organic stabilizers to enhance thermal stability, yet these are often hampered by non-uniform stabilizer dispersion. Electrospinning technology offers an effective solution by enabling the homogeneous dispersion of stabilizers at the nanoscale, thereby significantly improving their distribution within NC fibers. In this study, nanostructured NC was fabricated via electrospinning, and two organic stabilizers—N-methyl-p-nitroaniline (MNA) and 3-methyl-1,1-diphenylurea (AKII)—were introduced to synthesize nanocomposite nitrocellulose. The morphological characteristics of the resulting samples were investigated using focused ion beam scanning electron microscopy (FIB-SEM) to assess the influence of stabilizers on fiber morphology. The thermal stability and pyrolysis mechanisms were systematically examined through thermogravimetric analysis coupled with differential scanning calorimetry (TG-DSC) and Fourier-transform infrared spectroscopy (FTIR) conducted at multiple heating rates, and the effects of the two stabilizers on the thermal properties of NC were evaluated. A comprehensive kinetic analysis was performed using various model-free methods to elucidate the relationship between activation energy and conversion rate. The most probable mechanistic functions for the thermal decomposition of each sample were determined using master plots, followed by refinement of the kinetic models. The results indicate that AKII exhibits superior stabilizing efficacy compared to MNA.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Jingyi Yan,Siyuan Peng,Jingying Huang,Zhihua Song,Dani Sun,Yongfei Ming,Lingxin Chen,Jinhua Li,Huaying Fan
Antibiotics have received wide concerns especially in coastal-zone waters, necessitating their sensitive determination. Metal-organic frameworks (MOFs) based molecularly imprinted polymers (MIPs) composites have demonstrated excellent versatility, recognition properties, and practical applicability in the sample preparation. Herein, zeolitic imidazolate frameworks (ZIFs)-8 (ZIF-8) as a kind of typical MOF material, was employed as the support of MIPs and the resultant ZIF-8-MIPs were used for solid-phase extraction (SPE) of fluoroquinolones (FQs) in coastal-zone environmental water samples followed by high-performance liquid chromatography (HPLC) determination. The composites were facilely prepared via precipitation polymerization combined with surface imprinting, using enrofloxacin (ENR) as template molecule. The composition, structure and morphology of ZIF-8@MIPs were well characterized, and the adsorption followed pseudo-second-order kinetic and Langmuir isotherm models. Rapid adsorption equilibrium can be reached within 30 min, with a maximum adsorption capacity of 79.97 mg/g. Then, key parameters of SPE packed with ZIF-8@MIPs were systematically investigated. Under the optimal conditions, a sensitive SPE-HPLC method was developed towards four FQs, offering high enrichment factors of 82–153. Excellent linearity was attained in the wide range of 0.1–200 μg/L, and the limits of detection were as low as 0.024–0.034 μg/L together with limits of quantitation within 0.081–0.113 μg/L. The matrix effect values in the tested coastal waters including seawater, aquaculture wastewater, lake water, and river water, were from –6.69% to 5.47%, indicating the ZIF-8@MIPs-SPE efficiently eliminated matrix interference and ensured accurate reliable quantification. Consequently, in all the four water samples, high recoveries ranged from 91.4 to 105.2%, with low relative standard deviations of 1.8–8.7%. This study can enrich the research connotation of MOF@MIPs composites based sample preparation and provide an alternative detection scheme for the monitoring of trace antibiotics in complicated matrices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Min Tang,Wu Liu,Jinquan Wan,Shiyu Zuo,Zhiyong Wang,Rui Peng
Fenton-like oxidation is often hampered by high energy barriers, uncontrolled oxidation pathways, and inefficient reactive oxygen species (ROS) utilization. Here, we report an energy-driven confined catalytic nanoreactor that leverages the in-situ confinement energy generated within nanopores to fundamentally regulate degradation thermodynamics. Taking sulfamethoxazole (SMX) as a model contaminant, the confined nanoreactor exhibited a 22.11-fold higher kinetic constant (0.157 min −1 ) and 40 % enhanced mineralization efficiency compared with its non-confined system. The imprinting channel of confined nanoreactor enabled selective adsorption of SMX within the nanochannel, inducing pronounced confinement effects. The resulting confinement energy triggered a low-entropy degradation pathway (ΔS reduced by 3.2 × 10 3 -fold), which broke thermal equilibrium constraints and redirected SMX oxidation along a low-energy-barrier route. The in-situ confinement-induced low-entropy reaction not only accelerated pollutant degradation but also improved ROS conversion efficiency. This study demonstrated a green and sustainable approach to overcome the intrinsic efficiency bottleneck of Fenton-like processes and provide a new perspective on exploiting nanoconfinement effects for environmental remediation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Jianan Huang,Xianlin He,Ruqi Zhang,Zixuan Ding,Yanting Song,Haimei Yang
Accurate identification of multiple teas based on the difference in their contents and species of metal ions is vital in food inspection and public health. However, achieving accurate sensing from one material with various transduction signals and excellent anti-interference remains a challenge. Herein, a four-channel sensing platform was constructed by combining with four water-soluble InP/ZnS QDs with independent emission. The fluorescence intensities of the four water-soluble InP/ZnS QDs change in different degrees owing to the synergistic coordinative effect between metal ions and ligands. Interestingly, the multi-channel sensing platform allows the qualitative performance of metal ions with excellent anti-interference, high sensitivity, and high accuracy in binary and ternary mixtures. Moreover, the multi-channel fluorescent array exhibited a universality-powerful capability for identifying five teas with satisfactory results. The universal application for detecting Cr 6+ , Hg 2+ , and Cu 2+ in various tea drinks was demonstrated with excellent recovery, indicating a promising potential application in food safety.
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
IF 6.3
Ji-Long Sun,Da-Shuai Li,Ting-Ting Li,Ching-Wen Lou,Xu Han,Hai-Tao Ren
Background Corrosion, being a pervasive and inevitable natural occurrence, poses a grave threat to engineering equipment, human well-being, and the environment. Polyaniline (PANI) is an excellent anti-corrosion filler that enhances the corrosion resistance of steel surface. The traditional PANI preparation methods are chemical oxidation or electrochemical oxidation at low temperature, and the reaction conditions are harsh and easy to cause energy waste. Methods Novel ECN@PANI composite fillers were synthesized using nitric acid etched g-C 3 N 4 (ECN) as photoinitiator at room temperature. ECN@PANI/WEP coatings were prepared by using synthetic ECN@PANI composites as corrosion inhibitors and waterborne epoxy resin (WEP) as raw materials. ECN@PANI/WEP coatings were then hydrophobically modified with polydimethylsiloxane (PDMS) to yield ECN@PANI/HWEP coatings. The comprehensive structures and optical properties were thoroughly evaluated through Field Emission Scanning Electron Microscopy (FESEM), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), Electrochemical Impedance Spectroscopy (EIS) and Diffuse Reflectance Spectroscopy (DRS) studies. Significant findings ECN@PANI composite fillers with excellent anticorrosive properties were prepared by photocatalytic polymerization using ECN as a photoinitiator. XPS and XRD results show that ECN@PANI/HWEP coating forms a dense passivation layer (Fe 3 O 4 ) on Q235 steel surface, which reduces the corrosion of steel to the maximum extent; ECN@PANI/HWEP produces active substances under light, which oxidize, fracture, and degrade the cell wall when in contact with the cells, resulting in a coating with better anti-algae properties; and the ECN@PANI/HWEP coating refracts part of UV rays and converts the remaining UV rays into heat to achieve excellent UV resistance properties. Combining outstanding UV resistance and anti-algae properties, the ECN@PANI/HWEP coating ensures long-term corrosion protection.
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Qianyi Li,Yuxuan Zheng,Jingyao Zhang,Zhiyong Xiong,Haibo Jin,Yuefeng Su,Caihong Feng,Ning Li,Chengzhi Wang,Jingbo Li
Cesium tungsten bronze (Cs x WO 3 ) is of significant interest due to its unique spectral selectivity, which is utilized in transparent thermal insulation coatings. However, the low-cost batch preparation of Cs x WO 3 nanopowders remains a challenge. In this study, we performed an Sb doping modification of Cs x WO 3 . It was observed that Sb doping makes Cs x WO 3 more prone to breakage, facilitating the preparation of nanoparticle Cs x WO 3 through a simple solid-state reaction followed by mechanical milling. A 7 % Sb doping results in a small average particle size of 108 nm using moderate ball milling. Meanwhile, appropriate Sb doping enhances the transparent thermal insulation properties of Cs x WO 3 . A 3 % Sb doping raises the integrated visible light transmittance ( T lum , 380–780 nm) of Cs x WO 3 from 61.7 % to 65.40 %, and improves the near-infrared shielding efficiency ( Ψ NIR , 780–2500 nm) from 61.20 % to 65.92 %, increasing by approximately 4 % and 5 %, respectively. The reasons for these property improvements are discussed based on experiments concerning bandgap ( E g ) and oxygen vacancy concentrations induced by Sb doping. This study indicates that Sb doping of 1–3 at% can produce Cs x WO 3 nanopowders with better performance in a low-cost method, which is of great significance for advancing the production and practical application of nano-sized tungsten bronze powder in energy-saving coatings.
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION AND FLAME
·
2025
·
IF 6.2
Chunlan Qin,Bingzhi Liu,Weijie Xu,Canbin Lin,Shihao Ning,Zhandong Wang,Qingbo Zhu,Lidong Zhang
The carbon-neutral potential of ammonia is constrained by fundamental combustion barriers, driving the development of advanced bio-fuel blends as kinetic enhancement strategies. In this research, co-oxidation experiments of NH 3 and dimethoxymethane (DMM, CH 3 OCH 2 OCH 3 ) were executed in a jet-stirred reactor (JSR) under 1 atm and 730–1060 K. Through the use of state-of-the-art synchrotron radiation vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) for online diagnostics, we achieved the first quantification of the species pool in the reaction system, covering C/H/O compounds and various key nitrogen-containing intermediates. The experimentally derived species profiles served as the foundation for refining a kinetic model to describe NH 3 and DMM co-oxidation. The model was updated based on experimental and literature data, with key modifications to the rate constants for H-atom abstraction (DMM, NH 3 , intermediates) and the primary N 2 O consumption pathway. Ultimately, the improved model substantially improves the prediction of NH 3 /DMM co-oxidation species distribution (especially for DMM, NH 3 , CH 3 OCHO, CH 2 O, N 2 O, etc.), and it can also accurately reproduce ignition delay times and laminar flame speeds from previous studies. Additionally, the kinetic analysis further clarified the co-oxidation reaction pathways of NH 3 /DMM, especially highlighting the non-negligible influence of some key reaction pathways on their co-oxidation behaviour, such as CH 3 OCH 2 OCH 3 + NH 2 = CH 3 OCH 2 OCH 2 (CH 3 OCHOCH 3 ) + NH 3 , CO + N 2 O = N 2 + CO 2 , etc. This research provides critical experimental data and a more reliable kinetic model, advancing our understanding of the chemical kinetics underlying NH 3 /DMM co-combustion.
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Xiaoyu Jiang,Sikai Zhao,Jie Wang,Haiyi Lv,Weizhen Bai,Wenbao Liu,Qiang Zhao,Yanbai Shen
Tetracycline (TC) persistence in aquatic systems poses significant ecological and human health risks, due to its toxicity and resistance to conventional biodegradation. In this study, sulfur and nitrogen modification strategies were employed to enhance the catalytic performance of spinel ferrite MnFe 2 O 4 for TC degradation via H 2 O 2 and peroxymonosulfate (PMS) activation. The catalysts were characterized using SEM, XRD, VSM, CV, and ICP-OES to elucidate the effects of heteroatom modification on morphology, crystal structure, magnetic separability, and metal leaching behavior. S modification markedly enhanced both H 2 O 2 and PMS activation capabilities. The optimized S/MnFe 2 O 4 -5/H 2 O 2 system removed 82 % TC (50 mg/L) within 20 min, an eightfold increase in the reaction rate compared to the unmodified MnFe 2 O 4 /H 2 O 2 . This system maintained high efficiency across a broad pH range (3–11). In contrast, nitrogen modification selectively improved PMS activation, with the optimal N/MnFe 2 O 4 -3/PMS system degrading 74 % TC in 30 min, twice the degradation rate of MnFe 2 O 4 /PMS, and exhibiting minimal metal leaching with excellent recyclability. Scavenger studies confirmed that ·OH constitutes the dominant reactive oxygen species (ROS) in S/MnFe 2 O 4 -5/H 2 O 2 systems, while both ·OH and ·SO 4 - contribute significantly in N/MnFe 2 O 4 -3/PMS systems. Sulfur species act as electron mediators, facilitating the Fe/Mn redox cycle and enhancing ROS generation, whereas zero valence iron (Fe 0 ) formed during nitrogen modification serves as an efficient electron donor to activate PMS. Degradation pathway analysis and toxicity predictions confirmed a substantial reduction of TC environmental hazards. This work provides fundamental insights into the structure–activity relationships of heteroatom-modified MnFe 2 O 4 catalysts, and establishes practical design principles for robust advanced oxidation process catalysts in antibiotic remediation.
✓ 已验证
产品关联
DOI
高影响因子
RESOURCES CONSERVATION AND RECYCLING
·
2025
·
IF 10.9
Yusen Wu,Pengcheng Wang,Keyi Lin,Jiaqi Hu,Yonggao Fu,Jie Zhu,Jujun Ruan
The development of sustainable methods for the recycling and disposal of spent lithium-ion batteries (LIBs) has become a research priority. A large amount of waste graphite containing metals, such as Ni, Co, and Cu, was produced in the recycling process of LIBs. It was classified as hazardous waste due to its high metal leaching concentration and requires safe disposal. In this study, the concentration leaching of Ni, Co, and Cu was inhibited to less than 2 mg/L in the toxicity characteristic leaching procedure through the preparation of concrete composite materials. It showed that 1% graphite incorporation can increase compressive strength by 7.75% and stiffness by 4.53% after 7 days of curing. Scenario and cost-effect analysis showed that under the optimistic scenario, the net income of 2400 yuan per ton can be achieved through the disposal subsidy and product income. This study provides a solution with both environmental and economic benefits for the safe disposal of waste graphite and promotes the collaborative development of LIBs recycling and green building materials.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Yuanyuan Cui,Gang Fu,Jiaxing Wen,Li Yang,Jiaxu Zhang,Jianmin Sun
The direct synthesis of cyclic carbonates from olefins involves a tandem process of olefin epoxidation and CO 2 cycloaddition, but designing a single catalyst with multiple active sites remains a challenge. In this work, a series of dual ligands quaternized Zr-based MOFs (Zr-Bpydc(Py + Br − )/CoTCPP-x, x = 1–5) were successfully synthesized by co-assembling 2,2′-bipyridine-5,5′-dicarboxylic acid (Bpydc) and cobalt(II) 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (CoTCPP) with Zr 6 clusters, followed by post-synthetic quaternization to incorporate nucleophilic Br − sites. Among them, Zr-Bpydc(Py + Br − )/CoTCPP-4 exhibited the best catalytic performance under mild reaction conditions (80 °C, 1.0 MPa, 12 h), achieving styrene conversion of 94.2 % and styrene carbonate (SC) selectivity of 66.5 %, significantly outperforming most previously reported heterogeneous catalytic systems under cocatalyst-free conditions. The excellent catalytic activity was attributed to the synergistic effect among redox-active Co 2+ sites, Lewis acidic Zr 4+ and Co 2+ sites, Br − sites, and basic pyridyl sites. Importantly, the catalyst also demonstrated broad substrate applicability and good recyclability, with negligible activity loss over five consecutive cycles. Furthermore, density functional theory (DFT) calculations elucidated the energy profile and reaction pathway of the styrene oxidative carboxylation reaction, revealing the cooperative roles of multiple active sites in both epoxidation and CO 2 cycloaddition reactions. Therefore, this work proposes a strategy based on the synergy of multiple active sites for developing efficient and recyclable heterogeneous MOF catalysts for CO 2 conversion.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Yangshuo Liu,Yaotian Yan,Feiyu Xu,Liang Qiao,Jiehe Sui,Wei Cai,Xiaohang Zheng
The activation of the lattice oxygen oxidation mechanism is vital for enhancing oxygen evolution reaction (OER) performance as it enables direct O–O bond formation, avoiding the *OOH formation. Compared with the conventional adsorbate evolution mechanism (AEM), the lattice oxygen-mediated mechanism (LOM) can break the theoretical limit of conventional adsorbate-based scaling relations and enhance the oxygen evolution reaction kinetics. Thus, there is an urgent need for an efficient strategy for designing OER electrocatalysts based on LOM. The O p band center is employed as descriptor in conjunction with machine learning to facilitate the activation of lattice oxygen. The descriptor can accelerate the catalyst design process as it circumvents the need for complex intermediate calculations. According to predictions, the Fe-Co 3 O 4 catalyst exhibits OER performance comparable to that of noble metal catalysts. The Fe-Co 3 O 4 catalyst achieves a low overpotential of 258 mV at 20 mA cm -2 in 0.5 M H 2 SO 4 , attributed to the shift in catalytic mechanism from AEM to LOM.The incorporation of Fe effectively induces an upshift in the O p band center and weakens the Co–O bond, thereby promoting direct O–O coupling for O 2 generation and consequently reducing the OER overpotential. Our study introduces a method to activate the lattice oxygen of metal oxide electrocatalysts, holding substantial promise for enhancing large-scale hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）