ELECTROCHIMICA ACTA
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2025
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IF 5.6
Fengming Zhao,Huadong Hu,Lili Zhao,Hui Yan,Huihui Zhou,Yinghong Zhu,Youqun Chu
A real-time p-benzoquinone (PBQ) sensor with simplified fabrication was developed and integrated with organic electrosynthesis for in situ detection during electrochemical production. The portable microneedle sensor was constructed using a self-supporting nanoporous gold wire substrate, fabricated through a two-step process: anodization under fluoride ion modulation, and followed by chemical reducing in a mixed solution of ascorbic acid and SnCl 2 . The introduction of fluoride ions during the anodization significantly enhanced the electrochemical detection performance (83 % PBQ reduction property improvement), attributed to their strong coordination capability in pore structure engineering. The sensor's detection range (5.56 μM-1.53 mM) was designed to encompass both initial and terminal PBQ concentrations in typical production processes. Comparative validation with HPLC demonstrated a measurement accuracy of ±3.9 %, maintaining precision in both blank matrices and complex reaction mixtures containing additives. Key performance metrics included 1.0 second response time and sustained operational stability over 7 continuous days (<5 % signal attenuation). The device exhibited exceptional selectivity against common coexisting species: phenol (99 % recovery), resorcinol (92.8 %), catechol (CT, 94.8 %), hydroquinone (HQ, 98.9 %), maleic acid (MH, 91.6 %), and oxalic acid (OA, 90.4 %). This methodology establishes a prototype for adaptive chemical monitoring platforms, demonstrating significant potential for real-time process analytics in diverse electrochemical synthesis applications.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2009
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IF 2.063
Dongwei Wei,Lishuo Wang,Chao Zhang
Solid−liquid equilibria have been measured for binary mixtures of 1,8-cineole with p-cymene, β-pinene, and camphene, respectively, using differential scanning calorimetry (DSC) over the whole composition concentration range. All three are simple eutectic systems. The eutectic point of the (1,8-cineole (1) + p-cymene (2)) mixture is at 200.0 K and x1 = 0.124, the (1,8-cineole (1) + β-pinene (2)) mixture at 205.6 K and x1 = 0.154, and the (1,8-cineole (1) + camphene (2)) mixture at 251.8 K and x1 = 0.582. An empirical equation of Ott and Goates was used for correlating the experimental data.
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Small
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2024
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IF 13
Quanshuo Wu,Junli Wang,Xuanbing Wang,Jinlong Wei,Jing Wang,Can Zhang,Ruidong Xu,Linjing Yang
The rational design of highly active and durable non-noble electrocatalysts for hydrogen evolution reaction (HER) is significantly important but technically challenging. Herein, a phosphor and cobalt dual doped copper–nickel alloy (P, Co–CuNi) electrocatalyst with high–efficient HER performance is prepared by one-step electrodeposition method and reported for the first time. As a result, P, Co–CuNi only requires an ultralow overpotential of 56 mV to drive the current density of 10 mA cm −2 , with remarkable stability for over 360 h, surpassing most previously reported transition metal-based materials. It is discovered that the P doping can simultaneously increase the electrical conductivity and enhance the corrosion resistance, while the introduction of Co can precisely modulate the sub-nanosheets morphology to expose more accessible active sites. Moreover, XPS, UPS, and DFT calculations reveal that the synergistic effect of different dopants can achieve the most optimal electronic structure around Cu and Ni, causing a down-shifted d-band center, which reduces the hydrogen desorption free energy of the rate-determining step (H 2 O + e − + H* → H 2 + OH − ) and consequently enhances the intrinsic activity. This work provides a new cognition toward the development of excellent activity and stability HER electrocatalysts and spurs future study for other NiCu-based alloy materials.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Li Long,Xuechun Wang,Heyun Fu,Xiaolei Qu,Shourong Zheng,Zhaoyi Xu
Iron-based materials are effective for the reductive removal of the disinfection byproduct bromate in water, while the construction of highly stable and active Fe-based materials with wide pH adaptability remains greatly challenging. In this study, highly dispersed iron phosphide-decorated porous carbon (Fe2P(x)@P(z)NC-y) was prepared via the thermal hydrolysis of Fe@ZIF-8, followed by phosphorus doping (P-doping) and pyrolysis. The reduction performances of Fe2P(x)@P(z)NC-y for bromate reduction were evaluated. Characterization results showed that the Fe, P, and N elements were homogeneously distributed in the carbonaceous matrix. P-doping regulated the coordination environment of Fe atoms and enhanced the conductivity, porosity, and wettability of the carbonaceous matrix. As a result, Fe2P(x)@P(1.0)NC-950 exhibited enhanced reactivity and stability with an intrinsic reduction kinetic constant (kint) 1.53–1.85 times higher than Fe(x)@NC-950 without P-doping. Furthermore, Fe2P(0.125)@P(1.0)NC-950 displayed superior reduction efficiency and prominent stability with very low Fe leaching (4.53–22.98 μg L–1) in a wide pH range of 4.0–10.0. The used Fe2P(0.125)@P(1.0)NC-950 could be regenerated by phosphating, and the regenerated Fe2P(0.125)@P(1.0)NC-950 maintained 85% of its primary reduction activity after five reuse cycles. The study clearly demonstrates that Fe2P-decorated porous carbon can be applied as a robust and stable Fe-based material in aqueous bromate reduction.
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JOURNAL OF CONTROLLED RELEASE
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2024
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IF 10.5
Mao Xu,Shihui Yu,Pengyu Li,Yili Chen,Yujun Chen,Jieyi Pan,Xin Deng,Haiyan Hu
Therapeutic challenges of chronic pulmonary infections caused by multidrug-resistant Pseudomonas aeruginosa (MDR P. aeruginosa ) biofilms due to significantly enhanced antibiotic resistance. This resistance is driven by reduced outer membrane permeability, biofilm barriers, and excessive secretion of virulence factors. Thickened mucus in the airways exacerbates the problem by impeding antibiotic penetration, providing a breeding ground for biofilms, consequently aggravating infection. Moreover, biofilms recruit numerous immune cells, resulting in chronic inflammation and lung tissue damage. In turn, damaged airway further facilitates bacterial colonization and elevated mucus production. To thoroughly disintegrate the stubborn triad of “thickened mucus & dense biofilm & excessive inflammation” and address drug resistance, tailored multilayer nanoparticles (NPVC/PBIP NPs) were developed. NPVC/PBIP NPs were engineered through self-assembly of vanillin-chitosan amphiphilic polymer loading polymyxin B-linoleic acid ion pairs in. Then polyaspartic acid and N -acetylcysteine-ε-poly- l -lysine were coated by layer-by-layer on the surface of vanillin-chitosan NPs via electrostatic interactions. As expected, the NAC units on NPVC/PBIP NPs effectively thinned human clinical sputum and porcine sputum, resulting in rapid sputum penetration followed by biofilm permeation. NPVC/PBIP NPs achieved over 99 % eradication of mature biofilms in vitro . Furthermore, they effectively inhibited virulence factors production and bacteria re-adhesion (biofilm reformation) while exhibiting superior anti-inflammatory and antioxidant activities. In a chronic pulmonary infection model, NPVC/PBIP NPs remarkably thinned airway mucus, reduced bacterial burden by 99.7 %, alleviated inflammatory cell infiltration, and minimized lung tissue damage. In summary, the NPVC/PBIP NPs represent a novel and promising strategy to manage MDR P. aeruginosa biofilms associated infections by disintegrating the stubborn triad of “thickened mucus & dense biofilm & excessive inflammation”.
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ACS Photonics
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2024
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IF 6.5
Guixiang Xie,Qilong Li,Xiaochun Lu,Longtao Li
Organic–inorganic hybrid perovskite solar cells (PSCs) have shown impressive photoelectric conversion efficiency (PCE) but suffer from inevitable degradation when exposed to air and light. Replacing the organic cations with inorganic Cs+ to yield all-inorganic CsPbX3 perovskites can improve the stability under environmental pressure. Among them, cesium lead bromide (CsPbBr3) perovskite shows great environmental tolerance under illumination, humidity, heat, and oxygen attack. However, the energy gap between the carbon electrode and CsPbBr3 limits the carrier separation–transfer rate. Herein, p-type charge-transfer-doped NiO nanocrystals are employed as hole transport materials in all-inorganic CsPbBr3 PSCs with a fluorine-doped tin oxide (FTO)/SnO2/CsPbBr3/NiO-l-Cys/carbon structure. This combination reduces the charge-carrier recombination by decreasing the hole transport potential energy-level barrier between the perovskite and the hole transport layer. The coordination of the energy structure associated with the interfacial charge extraction–transfer action leads to a remarkable enhancement in PCE (9.61%) and a much higher open-circuit voltage (1.614 V), surpassing those achieved by hole-free devices (7.35% and 1.504 V, respectively). The PSC device assembled with NiO nanocrystals displays good stability under high humidity and temperature for 30 days. The greatly improved PCE, coupled with good stability, demonstrates the great potential of l-cysteine-doped NiO for future use as a hole-transporting material in all-inorganic PSCs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jian Tang,Jun Fang,Haochen Yao,Jianglong Wei,Geng Gao,Yusong Yang,Bin Yang,Yaochun Yao
Hierarchical structure design and heterostructure engineering are effective strategies for enhancing hydrogen evolution reaction (HER) performance, yet their synergistic integration remains underexplored. In this work, a novel hierarchical P-NiMoO 4 @Net-like Ni 2 P heterostructure HER electrocatalyst was prepared via a two-step hydrothermal method followed by low-temperature phosphorization. The three-dimensional net like Ni 2 P was closely integrated with one-dimensional phosphorus-doped NiMoO 4 micro/nanorod arrays, enabling hierarchical structural assembly and the formation of synergistic heterointerfaces. The hierarchical structure significantly increased active site exposure, with a double-layer capacitance of 254.4 mF cm −2 , more than five times that of single-component Ni 2 P (48.4 mF cm −2 ). Density functional theory calculations revealed that the heterostructure lowered the d-band center of active Ni 3 sites and optimized the hydrogen adsorption energy, thereby enhancing HER activity. The P-NiMoO 4 @Net-like Ni 2 P catalyst exhibited an alkaline HER overpotential of 49 mV at a current density of 10 mA cm −2 . It also maintained stable operation for 100 h at 10mA cm −2 and 120 h at 100mA cm −2 . This study demonstrates the potential of integrating hierarchical and heterostructural strategies, providing a reference for advanced nanostructured catalyst development.
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LANGMUIR
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2025
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IF 3.9
Yangjie Zhong,Chengming Tang,Jidong Sun,Yafeng Zhang,Jiaxin Yu
Dielectric materials with superior dielectric properties are pivotal for enhancing the performance of electrowetting-on-dielectric (EWOD) devices. In this work, MWCNTs@SiO2 core–shell-structured fillers were fabricated by coating multiwalled carbon nanotubes (MWCNTs) with a uniform SiO2 outer layer. This innovative core–shell structure was incorporated into a poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) (P(VDF-TrFE-CTFE)) and poly(methyl methacrylate) (PMMA) organic matrix to fabricate composite films with enhanced dielectric properties. The incorporation of core–shell fillers significantly enhanced the microcapacitor effect and Maxwell–Wagner–Sillars interface polarization. At a low filler loading of 4 wt %, the composite achieved a high dielectric constant of 25.4 (at 100 Hz), representing a 108.2% enhancement compared to the pristine polymer matrix, while maintaining a low dielectric loss as low as 0.05. Furthermore, the SiO2 shell effectively mitigated inhomogeneous electric field distribution induced by dielectric constant mismatch, reducing field distortion and consequently enhancing the breakdown strength. Notably, under a DC voltage below 50 V, a high contact angle modulation range of 38.3° was achieved, representing a 151.97% enhancement compared to the pristine polymer matrix. These findings provide a new strategy for developing high-performance dielectric materials for EWOD applications.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2025
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IF 2.9
Jianfang Lu,Chaojie Fan,Yuanyuan Huang,Pengfei Li,Fuhou Lei,Haitang Xu,Caiyun Han,Kechun Li,Yu Feng
Tetracycline (TC) presents significant risks to the human health and has the potential to cause substantial harm to ecological systems due to its excessive utilization. However, carbon-based materials have attracted considerable interest for their efficacy in removing TC from aquatic environments. In this study, phosphorus and oxygen co-doped pinecone biochar (po-PBC) with a three-dimensional (3D) hierarchical porous architecture was synthesized and employed for the adsorption of TC. To elucidate the adsorption characteristics of po-PBC for TC, four adsorption kinetic models and four isotherm models were utilized. The adsorption data were best described by the pseudo-second-order kinetics model, as evidenced by an R2 value of 0.9975. Furthermore, the removal efficiency of TC using po-PBC increased to 81.67% at 313 K for an initial concentration of 150 mg L−1 in comparison to unmodified PBC. The observed increase can be attributed to the co-doping of phosphorus and oxygen heteroatoms, along with the presence of a three-dimensional hierarchical porous structure. The Langmuir isotherm model, exhibiting R2 values between 0.9830 and 0.9926, accurately characterized various equilibrium isotherms. The maximum adsorption capacities for TC at temperatures of 298 K, 308 K, and 318 K were determined to be 1137.09 mg g−1, 1379.23 mg g−1, and 1401.77 mg g−1, respectively. The relatively low average free energies, ranging from 0.11 to 0.63 kJ mol−1, corroborated the physical nature of the adsorption process. Thermodynamic parameters (ΔH > 0, ΔG < 0, and ΔS > 0) further indicated that the adsorption process was spontaneous and endothermic. Moreover, the adsorption capacity of TC was retained at 88.12% after five successive adsorption-regeneration cycles. Therefore, po-PBC demonstrates significant potential for the removal of TC from wastewater. Additionally, it offers novel insights into the reduction, stabilization, and resource utilization of pinecones.
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POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Jirui Qu,Yusheng Tong,Yujiao Bi,Wenbo Sun,Yanyue Shi,Zexuan Zhao,Zhihui Liu,Shaofeng Wang,Lei Liu,Xilei Chen,Chuanmei Jiao
In recent years, P-N based hybrids flame retardants have received more and more attention in the field of fire safety due to their synergistic effect in the gas and condensed phases, which makes it easy to achieve efficient flame retardancy. However, their flame retardant mechanism in the gas phase rests more on the increase of non-flammable gases than on the conversion of harmful gases to harmless gases, and their hybrids are often not sufficiently stable. Therefore, in this study, P-N hybrids were encapsulated and modified using MXene, which has high thermal stability and outstanding catalytic ability, to prepare a novel flame-retardant hybrid, MDAPP, which was incorporated into rigid polyurethane foam (RPUF) to achieve more efficient fire safety performance. The results showed that MDAPP significantly enhanced the fire safety properties of RPUF composites. Specifically, RPUF-2.0MDAPP resulted in 40.98%, 63.16, and 60.00% decreases in total heat release (THR), total smoke release (TSP), and CO production rate (COPR) of RPUF, respectively. Moreover, the system also achieves synergistic flame retardant effects in the gas and condensed phases. At the same time, RPUF-2.0MDAPP has excellent thermal shielding performance, with a temperature reduction of 88.14% compared to RPUF in a fire source heating test when placed in a vertical position. In addition, the compressive strength and hydrophobicity of RPUF-2.0MDAPP have been improved to ensure its longevity in complex environments. This study proposes a solution to the problem of reducing the fire risk of RPUFs and promotes the widespread use of RPUF.
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Journal of Water Process Engineering
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2025
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IF 6.7
Qibang Tong,Jingqi An,Jingcheng Liu,Guixin Wang,Xin Zhou,Wenhao Zhang,Lifang Jiang,Yan Li,Yong Guo
P-cresol ( p -C) is a highly toxic and refractory phenolic pollutant, which is frequently found in industrial wastewater. Since the deficiencies of traditional treatment processes, it is easily transferred to water environment, posing a potential threat to ecological safety and human health. Hence, high-efficiency degradation of p -C in water is an urgent but challenging task. In this study, a kind of low-cost commercial ferrous sulfide (FeS) was employed to activate peroxydisulfate (PDS) for the degradation of p -C in water, and the main impact factors, active species and reaction mechanism were investigated. The results revealed that p -C (20 mg/L) could be thoroughly degraded in 20 min in FeS-activated PDS system over a wide initial pH range of 3.0–9.0, and the mineralization ratio reached 68.8 %. Based on the results of radical scavenging experiment, electron paramagnetic resonance (EPR) trapping experiment and XPS analysis, the mechanism of p -C degradation was proposed. P-cresol degradation in FeS/PDS system mainly follows heterogeneously catalytic oxidation mechanism, in which surface ≡Fe 2+ active PDS to generate surface-bound radicals (SO 4s •– and HO s • ), while the free radicals (SO 4L •– and HO L • ) diffusing from the surface of FeS catalysts to the solution are primarily responsible for p -C degradation, and the HO L • is the dominant one. The sulfur species of S 2− and S n 2− on FeS surface provided electrons to facilitate a continuous ≡Fe 3+ /≡Fe 2+ circulation, promote PDS activation and thus enhance p -C degradation. Conclusively, the FeS/PDS system could have a great potential for the degradation of p -C and the like recalcitrant pollutants in water.
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ENERGY & FUELS
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2025
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IF 5.3
Jingyu Lv,Kang Tan,Fei Wang,Chuanyu Dang,Mengting Sun
Slow CO2 hydrate formation kinetics restricts the development and industrial application of hydrate-based carbon capture and sequestration (CCS) technology. Here, sodium p-styrenesulfonate (SSS) was employed as a novel promoter for CO2 hydrate formation, and its efficiency, promotion mechanism, and recyclability were systematically studied. Results indicated that SSS improved the hydrate formation kinetics remarkably and yielded the highest CO2 uptake of 8.033 ± 0.348 mmol mL–1 as well as the rapidest hydrate growth rate (HGR) of 0.437 ± 0.075 mmol mL–1 min–1 at concentrations of 50 and 100 mmol L–1. SSS under a moderate concentration also presented high efficacy; 6 mmol L–1 SSS led to a short induction time of 36.37 ± 32.14 min, a rapid HGR of 0.307 ± 0.029 mmol mL–1 min–1, and a high CO2 uptake of 7.036 ± 0.472 mmol mL–1. Morphological observation revealed that the promotion effects were mainly attributed to the climbing hydrate growth caused by capillary effect, which was markedly influenced by the sidewall hydrophilicity and the SSS concentration. Stronger hydrophilicity of the sidewall and a higher SSS concentration both favored the liquid movement, boosted the climbing hydrate growth, and improved the formation kinetics. Additionally, SSS did not produce foam when hydrates dissociated and kept admirable promotion performance in at least six repeated cycles, indicating its excellent recyclability.
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