ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Fanxi Zhang,Yupeng Xie,Yaru Wang,Yixin Si,Chen Chen,Zheng Han,Shixi Chen,Xuanyu Meng,Quanxu Jiang,Yaocheng Hu,Xiaozhi Zhang,Sheng Wang
Tantalum (Ta), with a high hydrogen diffusion coefficient, acts as a hydrogen diffusion layer (H-D layer) in accelerator-based boron neutron capture therapy (AB-BNCT) neutron production targets to prevent hydrogen embrittlement of copper (Cu) substrates. However, when Ta layers reach micron-level thicknesses, stress accumulation during magnetron sputtering may cause cracks or peeling. To solve this issue, this study used electrolytic oxidation (EO) to modify surface microstructure of Cu substrates. A three-factor, three-level orthogonal experiment investigated how EO parameters (current density, treatment time, solution temperature) affect surface morphology and crystal structure of Cu substrates, as well as performance of subsequent Ta deposition. Under optimal conditions (10 min reaction time, 20 mA·cm −2 current density, 50℃ solution temperature), surface microstructure of modified substrates provided more attachment points for sputtered Ta atoms and restricted atomic migration. Compared with unmodified substrates (0-Cu), the 1 μm Ta layer on modified substrates (7-Cu) had significantly reduced stress (from 28.27 GPa to 2.11 GPa), enhanced bonding (no detachment or cracking), and a higher β-Ta proportion. Monte-Carlo simulations (PHITS) confirmed that EO-introduced phosphorus (from phosphoric acid electrolyte) did not reduce neutron yield of targets, which remained stable at 2.4×10 13 n·s −1 with 0-20% P content. SRIM simulations further showed excellent proton stopping power of Ta layers, which effectively prevented proton penetration into Cu. This study provides reliable theoretical support and methods for design and manufacture of neutron production target materials.
✓ 已验证
产品关联
DOI
高影响因子
Aggregate
·
2025
·
IF 13.7
Bin Liu,Genghong Huang,Yaling Wang,Huijie Bai,Suping Jia,Fu-de Ren,Xinghong Zhang
Carbon dots (CDs) have emerged as a promising platform for constructing optoelectronic devices. However, the synthesis of multicolor CDs with high quantum yield (QY) and the elucidation of their luminescence mechanisms remain challenges. Here, we successfully synthesize RGB-CDs by precisely controlling the ratio of o -phenylenediamine and phytic acid. The QYs of the RGB-CDs are up to 60.3%, 68.7%, and 19.0%, respectively. Experimental data and DFT calculations reveal that the fluorescence emission of the RGB-CDs originates from molecule state (5,14-dihydroquinoxalino[2,3- b ] phenazine), carbon core state, and clusteroluminescence state induced by the through-space interactions of heteroatom groups, respectively. Moreover, leveraging the outstanding fluorescence properties of the RGB-CDs, we fabricate both a white light-emitting diode (WLED) with an ultra-high color rendering index of 98 and a luminescent solar concentrator achieving a high power conversion efficiency of 1.6%. Finally, we integrate a self-powered lighting system combining the WLED and LSC, which provides approximately 6 h of continuous illumination to a 0.1 W WLED after a single day's charging. Our results demonstrate a facile method for preparing multicolor CDs with high QYs, enabling their use as phosphor sources for various optoelectronic device applications.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jingwen Feng,Jianjun Cheng,Jingwen Li,Susu Jia,Feiping Cao,Jiajin Feng,Dapeng Zhou,Jiahua Shi,Choon-Hong Tan,Hongjun Liu
Conventional hemodialysis significantly impacts patients' quality of life due to its intermittent nature, thus creating a demand for portable (PAK) or wearable artificial kidneys (WAK). A critical challenge in these systems is the efficient regeneration of dialysis fluid, which relies on cost-effective, high-performance adsorbents. This study introduces a novel sol-gel synthesis method for producing high-crystalline layered zirconium phosphate (ZrP) as adsorbents by incorporating fluoride ions and utilizing thermal treatment. This approach streamlines large-scale production while addressing the cost and complexity barriers of traditional ZrP synthesis, which also avoids the high temperatures and pressures typically required. The as-prepared α-Zr (HPO 4 ) 2 ⋅H 2 O (abbr. α-H 2 ZP) demonstrates an exceptional ammonium ion (NH 4 ⁺) adsorption capacity of 6.46 mmol/g for ammonium carbonate, surpassing α-Zr(NaPO 4 ) 2 ⋅H 2 O (abbr. α-Na 2 ZP) by 28 %. Moreover, α-H 2 ZP minimizes sodium leaching during adsorption, a critical advantage for dialysis fluid regeneration. Furthermore, adsorption mechanism studies revealed that the alkaline environment generated by ammonium salt hydrolysis triggers interlayer expansion in α-H 2 ZP, thereby enhancing NH 4 ⁺ insertion. In contrast, α-Na 2 ZP exhibits limited responsiveness to changes in anion concentration, highlighting α-H 2 ZP's superior adaptability. These findings position α-H₂ZP as a promising candidate for next-generation hemodialysis technologies, providing a foundation for the development of miniaturized, lightweight, and cost-effective WAK/PAK devices.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
·
2025
·
IF 4.7
Ningzi Guo,Zhenhua Liu,Yanling Wu,Song Yuan,Ningyi Wei,Yang Liu,Hui Xu,Hua Chen
Febuxostat (FEB), a primary long-term therapy for managing gout and chronic hyperuricaemia, has limited clinical application primarily due to its low aqueous solubility. This limitation necessitates high-dose administration, thereby increasing the risk of cardiovascular mortality. To address the solubility challenge, a natural bioactive alkaloid aloperine (ALO) was used as a co-former to form FEB-ALO, a co-amorphous system of FEB and ALO at a 1:1 molar ratio using both solvent evaporation and the liquid-assisted grinding method. Structural characterisation was performed using powder X-ray diffraction, Fourier transform infrared spectroscopy (IR), differential scanning calorimetry, and nuclear magnetic resonance spectroscopy (NMR). Dissolution behaviours, such as equilibrium solubility and the intrinsic dissolution rate, were also investigated. FEB-ALO showed a greatly enhanced intrinsic dissolution rate (145-fold) and water solubility (>10,000-fold) compared to those with the crystalline form A of FEB. Integrating IR, NMR and molecular electrostatic potential surface analysis revealed that robust ionic and hydrogen-bonding interactions within the FEB-ALO co-amorphous system explained the enhanced dissolution performance.Molecular docking and dynamic simulations further demonstrated the strong affinity and binding stability of FEB-ALO to xanthine oxidase, suggesting its promising efficacy in the treatment of hyperuricaemia and gout. The findings presented herein indicate that the drug-drug co-amorphous system holds promise for optimising the FEB dosage and proposing a synergistic drug combination approach.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xuedong Jia,Hongyuan Guo,Runying Chai,Jingbin Shi,Hao Wu,Yujue Feng,Wei Ji,Suozhu Wu
A dual-functional membrane modified electrode - based molecularly imprinted electrochemical sensor was developed for the ultrasensitive and selective detection of quercetin (Que). The dual-functional membrane consisted of chitosan-modified carboxylated multi-walled carbon nanotubes (cMWCNT-CS) nanocomposites and β-cyclodextrin/dopamine molecularly imprinted polymer (β-CD-DA-MIP). The synergistic interactions between the conductive layer of cMWCNT-CS and the recognition element of β-CD-DA-MIP enabled high-performance detection of Que. This sensor exhibited an ultra-wide linear response range of 1.0 × 10 −14 to 1.0 × 10 −4 M with a limit of detection of 2.9 × 10 −16 M (S/N = 3). The sensor also had the advantages of simple fabrication, rapid response (6 min), excellent reproducibility, and high selectivity. The sensor was successfully used to detect Que. concentration in grape, grape juice, and wine samples with satisfactory results. This study provided a simple, efficient, and ultrasensitive method for monitoring the natural bioactive compounds, which offered potential applications for food quality control and pharmaceutical analysis.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Kai Li,Wan-zhao Huang,Shi-guan Yang,Jia-hao Yu,Qi Niu,Li Zhao,Ying Mo,Yu-han Fan,Qiang Lu
This study developed an innovative method for directional degradation and valorization of waste cellulose acetate (CA) through pretreatment followed with catalytic pyrolysis, enabling the efficient and high-value recovery of CA. A synergistic pretreatment with ethanol and NaOH was employed to modify the molecular structure of CA feedstock. Coupled with phosphoric acid-activated carbon (PAC) catalyzed pyrolysis, the pretreatment-dependent alternation in CA’s physicochemical properties and their effects on pyrolysis to prepare levoglucosenone (LGO) were systematically investigated. The results indicated that the ethanol-NaOH synergistic pretreatment selectively removed the acetyl substituents in CA, exposing more cellulose characteristics, and facilitated the swelling of CA. These modifications enhanced the suitability of CA for selective LGO production. In pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments, the highest yield of LGO from pretreated CA reached 17.84 wt%, significantly exceeding the 2.67 wt% yield gained from untreated CA. This study laid a solid foundation for the efficient and high-value recycling of waste CA.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiawei Han,Wen Sun,Weitao Fang,Zhimin Yue,Baimin Niu,Huizhen Sun,Xiaoqian Liu,Jue Wang,Jiaxin Chen
Flavonoids are the functional ingredients in human diets, but their generally low water solubility limits their therapeutic application. The study aimed to provide a new design and solubilization strategy for flavonoids co-amorphized with food-safe chlorogenic acid (CHL) by integrating theory-model-experiment techniques. Among 14 flavonoid candidates, 5 flavonoids might form co-amorphous systems with CHL through theoretical calculation and molecular dynamics (MD) simulation. Co-amorphization accuracy was further confirmed by practical preparation and characterizations. Meanwhile, potential hydrogen-bond interactions occurred in the formed co-amorphous systems via FTIR and MD analyses. Herein, 5 flavonoid co-amorphous systems displayed significantly enhanced solubility/dissolution and excellent physical stability. Additionally, such co-amorphous systems performed strong antioxidant activity according to DPPH radical scavenging, and possessed superior antibacterial activity than flavonoids themselves against three kinds of bacteria. This study emphasizes that the integrated strategy can be used to design flavonoid co-amorphous systems for enhancing their antioxidant and antibacterial activities in food preservation and functional products. Importantly, this study provides a practical methodology to guide the screening of co-amorphous systems for flavonoid components and even other classes of compounds by integrating theory-model-experiment techniques.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jianfeng Lan,Xianhui Zhang,Jiangfan Chang,Bo Wu,Baiyi Chen,Jianhua Wu
Titanium, known for its high strength-to-weight ratio and excellent corrosion resistance, has great potential for marine engineering application. However, due to its biocompatibility, titanium is highly susceptible to undesirable biofouling in the marine environment. In this study, we developed a long-lasting anti-fouling surface by completely filling Cu 2 O into TiO 2 nanotube arrays with a high aspect ratio of 132 on the titanium. The interfacial bonding strength between the high-aspect-ratio TiO 2 nanotube arrays and the titanium was subsequently enhanced by a factor of 7.98 through a two-step post-anodization and annealing treatment, which was sufficient to resist the stripping effect of the subsequent electrochemical filling of Cu 2 O. Then, the reinforced high-aspect-ratio TiO 2 nanotube arrays were completely filled with Cu 2 O by a two-step electrochemical filling strategy, resulting in a loading amount of Cu 2 O up to 1.5 mg/cm 2 on the titanium and inhibiting its burst release in the seawater with a release rate of less than 10 μ g/(cm 2 ·d). Compared to titanium, this nanocomposite structure maintained over 99 % anti-adhesion ratio against N . incerta for up to 217 days and resisted biofouling for more than 1 month in the actual marine environment. This in-situ prepared, cost-effective, and highly-efficient anti-fouling titanium surface provides a novel strategy for large-scale applications of titanium in the marine engineering.
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Guoyong Jiang,Yuqi Wan,Jingkun Li,Junjie Qi,Yukihiro Ozaki,Fuwei Pi
Development and modulation of carbon dots based nanozymes (CDNs) with pleasing oxidase-like activities remains a challenging and meaningful endeavor. Herein, aiming at enhanced photocatalytic capabilities of CDNs, a phosphoric acid (H 3 PO 4 ) synthesis strategy was proposed through series of remarkable CDNs development and elaboration, named as P-CDNs. In this modulated strategy, reagent of H 3 PO 4 not only provides P atoms into the carbon dots’ backbone, generating defects for π-electron; but also functionalizes as interbedded phosphate, providing active electron sites to further promote electron efficacy and oxidase-like activities. The capacity of catalytic TMB was used to exemplify the oxidase-like activities of CDNs, and the results confirmed that the catalytic performance of P-CDNs was 3.25 times than that of the reference CDs. Based on the crackajack oxidase-like activity of P-CDNs, a smartphone remote analysis system was readily constructed to sensitive colorimetric/fluorescence dual mode response to diazotization reaction represented by nitrite. Our synthesis strategy not only provides guidance for the design of highly active CDNs but also offers directions for synthetic chemistry and materials science.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Mengmeng Yang,Zhao Zhao,Wei Hu,Lihao Liu,Heng Cai,Hongchao Liu,Bohang An,Min Li,Qiong Wu,Zhaofeng Chen
The rapid development of industry and transportation has given rise to serious noise pollution, which posing serious threats to the social economy and human physical and mental health. However, commonly existing fibrous noise absorption materials with single pore-structure are limited by their large density, poor sound absorption ability, which are difficult dissipation of noise at low frequency. Herein, gradient-structured fire-resistance elastic ceramic nanofiber aerogels with dual scale structure at micro and macro levels are success-fully structured through step-by-step directional freeze-casting technology. The macro gradient pore structure improved the noise injection, and self-assembly nano network constructed by SiCnw improved the acoustic contact area of aerogel. In addition, the good thermal conductivity of SiCnw helps to convert sound energy into heat energy and quickly dissipate heat, further improving the sound absorption effect. The noise reduction coefficient of the obtained ceramic fibrous aerogels reaches 0.55, and the maximum value of the sound absorption coefficient can be close to 1. In addition, the hydrophobic group in the binder gives the aerogel good mechanical properties (60% compressibility) and super hydrophobic properties (water contact angle ≈136°). The successful construction of lightweight, hydrophobic, fire-resistant gradient structure aerogel will provide a new prospect for the upgrading of the next generation noise absorber.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wenqiang Cao,Xiyu He,Xiyang Cai,Qiaodan Hu,Junliang Zhang,Fan Yang
Electrocatalytic nitrate reduction offers a sustainable approach to ammonia synthesis while simultaneously addressing nitrate contamination. Electrocatalysts with high activity, long durability and affordable cost are essential for advancing this field. This study demonstrates that Fe-doped TiO 2 nanoparticles synthesized by a simple hydrothermal route exhibit competitive electrocatalytic performances for nitrate-to-ammonia conversion. A faradaic efficiency (FE) of 82.3 %, an ammonia yield of 5.953 mg·cm −2 ·h −1 , and a selectivity of 85 % can be achieved and maintained in 10 cycles with a total duration of 60 h in alkaline electrolyte. These metrics substantially outperform the pristine TiO 2 . Defect chemistry analysis and DFT calculations reveal that Fe doping creates oxygen vacancies, and introduces impurity energy levels in the bandgap to improve the electrical conductivity of TiO 2 . Fe and oxygen vacancies synergistically modulate the nitrate adsorption energy, and the Fe active site further reduces the energy barrier for the rate-limiting step and suppresses the competing reactions, thereby effectively promoting ammonia synthesis.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yunxing Chen,Hang Yang,Suming Li,Yunfan Yang,Bohong Yang,Xiaolong Wang,Dandan Gao,Ming Huang,Chunhui Wang,Wanbiao Hu
We present a strategy to prepare bilayer reduced graphene oxide aerogels with hierarchical structure (rGAH) via two-step directional freeze-casting with spatial rotation, addressing the limitations of conventional homogeneous counterparts in achieving absorption-dominant and tunable electromagnetic interference (EMI) shielding. The architecture synergistically integrates an upper layer with vertically aligned pores for optimized impedance matching (reduce reflection loss) and a lower honeycomb-structured reflective shield, synergistically enhancing microwave absorption through dual electrical-structural gradients. Orthogonal pore alignment enables ultra-low in-plane thermal conductivity (0.012 W/(m·K)), surpassing most reported graphene aerogels. Incorporating 50% carbon nanotubes into the reflective layer yields exceptional EMI shielding effectiveness (54.2 dB) with a high absorption coefficient (A = 0.88). The compressible design permits dynamic modulation of EMI shielding (absorption-reflection ratio: 1.9–3.7) and electrothermal performance, featuring rapid Joule heating (58 °C at 3.5 V within 10 s) and compression-dependent tunability (0–90% strain). This orthogonally engineered bilayer platform, extendable to diverse 2D nanomaterials (e.g., MXenes), provides a scalable strategy for multifunctional shielding materials with programmable thermal/electrical properties. By structurally optimizing aerogels with dynamic responsiveness, our work advances excellent electromagnetic protection systems, demonstrating potential for next-generation shielding technologies.
✓ 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）