ACS Applied Polymer Materials
·
2026
·Vol. 8
·期 15
·12273-12284
·
IF 5.2
Du Juan,Zhang Xin,Zuo Chengwei,Liu Pingli,Wen Bingyan,Zhao Renyin,Qu Yixiang
Acidizing
systems are widely employed in the exploitation of carbonate
reservoirs. However, the reaction kinetics of conventional hydrochloric
acid are excessively rapid, and the penetration distance is limited.
To address these issues, a purely cationic thickening polymer, ADDD,
was designed and synthesized for ultrahigh-temperature reservoirs
based on supramolecular interaction principles. The electrostatic
repulsion between cationic groups alleviates the compression of the
polymer’s electric double layer by H + , while the
hydrophobic association structure imparts rigidity and thermal resistance
to the polymer. The substitution of dimethyl diallyl ammonium chloride
(DMDAAC) for the commonly used AMPS monomer further reinforces the
polymer backbone, significantly enhancing its heat resistance, acid
resistance, and compatibility with carbonate reservoirs. At 180 ° C
and a shear rate of 170 s –1 , the viscosities of
15 and 20 wt % ADDD gelled acids stabilized at 40 mPa·s and 35
mPa·s, respectively, after 120 min of shear treatment. The gelled
acid retained 45.83% of its viscosity after aging at 180 ° C for
4 h. Its corrosion rate on P110SS was only 9.38 g/(m 2 ·h),
corresponding to 9.73% and 15.27% of the rates observed for hydrochloric
acid and AE gelled acid at the same concentration, respectively. Under
conditions of 180 ° C and 300 rpm, the acid–rock reaction
rate of ADDD gelled acid was reduced to merely 12.5% and 50.68% of
those of hydrochloric acid and AE gelled acid, respectively. The residual
acid exhibited a viscosity as low as 1 mPa·s, and no obvious
precipitation was observed. After breaking with 0.05 wt % ammonium
persulfate at 180 ° C, the viscosity of the ADDD gelled acid dropped
to 1.5 mPa·s. The conformational differences between ADDD and
AE in acidic media were collaboratively elucidated through zeta potential
measurements and dynamic light scattering (DLS) analysis. Molecular
dynamics simulations combined with analyses of H + diffusion
coefficients, binding energies, and radial distribution functions
revealed that hydrophobic association and cationic electrostatic effects
synergistically enhance acid resistance and suppress acid–rock
reaction rates. Meanwhile, electrostatic repulsion effectively prevented
the incompatibility issues of the corrosion inhibitor that arise from
amide thermal degradation under high-temperature conditions. The acid-
and temperature-resistant thickener synthesized in this study provides
technical and theoretical support for the development of ultrahigh-temperature
carbonate reservoirs.
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ACS Applied Polymer Materials
·
2026
·Vol. 8
·期 15
·12262-12272
·
IF 5.2
Chen Nanqing,Chen Xiangrong,Jin Yuyang,Zhang Tianyin,Song Jiale,Li Hao,Paramane Ashish,Li Steven Qi
This paper reports the effect of
m-aminobenzoic acid-functionalized
modified fullerene (fC 60 ) doping on the insulation performance
of cross-linked polyethylene (XLPE) composites. By leveraging the
electron-induced effect of the fC 60 structure, uniform
electron capture onto the C 60 molecular orbitals is achieved.
Kelvin probe microscopy, DC conductivity, DC breakdown, dielectric
properties, differential scanning calorimetry, and quantum chemical
calculations were performed on the samples to analyze the insulation
performance of XLPE before and after modification. The results show
that the DC breakdown field strength of the XLPE composite material
with fC 60 added is 13.76% higher than that of pure XLPE.
Moreover, this composite material exhibits lower DC conductivity and
dielectric loss, with a slower and smaller rate of surface potential
attenuation. The sample’s crystallinity increases as its lamellar
thickness decreases. Quantum chemical calculations show that a potential
barrier forms at the interface between XLPE and the quantum-well fC 60 , uniformly dispersing electrons within the fC 60 molecular cage and effectively reducing the electric-field distortion
at the fC 60 -XLPE interface.
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ACS Sensors
·
2026
·
IF 10.9
Yang Ting,Jiao Yang,Ma Yali,Lang Dajun,Cheng Liang,Wang Tingting,Ma Lin
Accurately resolving trace acetone against the highly humid background of exhaled breath remains a central obstacle to non-invasive diabetes diagnosis. Here we develop a metal–organic framework (MOF)-conversion-induced prenucleation strategy for the controlled construction of Fe 2 TiO 5–δ (FTO) solid solutions. During the topological transformation of MIL-125(Ti), Ti-derived oxide nuclei form within the pores of a daughter Fe-based MOF, enabling the generation of FTO enriched with mixed-valence Fe 3+ /Fe 2+ and Ti 4+ /Ti 3+ centres and abundant oxygen vacancies. The optimized FTO-3.49 sensor selectively detects acetone across 30–90% relative humidity, reaches a detection limit of 100 ppb and distinguishes ppb-level acetone concentrations in simulated exhaled breath. This performance is underpinned by mixed-valence centres that limit water-induced hydroxyl accumulation and oxygen vacancies that create additional adsorption sites and strengthen acetone binding, as supported by spectroscopic and computational evidence. This defect–valence synergy enables stable acetone sensing under highly humid conditions and provides a materials-design route towards humidity-resilient metal-oxide sensors for breath-acetone analysis.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 22
·1786
·
IF 3.2
Li Qing,Guo Kaixin,Liu Bowang,Zhang Xin,Cui Ruirui,Wang Xu,Deng Chaoyong
Lead-free halide double perovskites are attractive luminescent materials owing to their low toxicity and structural stability, but their white-light performance is often limited by weak long-wavelength emission and inefficient energy regulation. Herein, Sb 3+ single-doped and Sb 3+ , Mn 2+ co-doped Cs 2 NaLuCl 6 phosphors were synthesized by a hydrothermal method. Sb 3+ introduces broadband blue emission associated with localized excited states, while Mn 2+ incorporation produces orange-red emission through the 4 T 1 → 6 A 1 transition. The coexistence of these two emission components enables tunable dual-emission and single-host white-light generation. Time-resolved PL analysis confirms the shortening of the Sb 3+ -related lifetime after Mn 2+ incorporation, and the energy-transfer efficiency reaches 31.25% for the optimized Cs 2 NaLuCl 6 : 0.005Sb 3+ , 0.05Mn 2+ sample. Temperature-dependent PL and Arrhenius analysis reveal improved thermal-quenching resistance, with the activation energy increasing from 0.13777 to 0.21293 eV. The optimized phosphor-based WLED exhibits neutral-white emission with CIE coordinates of (0.3287, 0.3565), a CCT of 5688 K, and a CRI of 72.4. These results provide insight into emission regulation and energy-transfer dynamics in Sb 3+ , Mn 2+ co-doped Cs 2 NaLuCl 6 phosphors for proof-of-concept white-light and optical anti-counterfeiting applications.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2026
·Vol. 132
·期 8
·722
·
IF 3
Song Zhe,Xiao Chunyan,Gao Qixuan,Ma Haoyi,Yue Xiting,Lu Jiatian,Jiang Ming
Peroxymonosulfate (PMS)-assisted photocatalytic degradation represents an efficient advanced oxidation process for water purification. In this study, a novel SrTiO₃/Cu₂SnS₃ heterojunction was synthesized via a hydrothermal method, which was employed for visible-light-driven PMS activation to degrade norfloxacin (NOR). The STO/CTS-2 (n SrTiO₃ /n Cu₂SnS₃ = 2) composite exhibited superior catalytic performance, achieving 92.65% NOR degradation within 60 min, attributed to enhanced charge separation and efficient PMS activation. Comprehensive characterization confirmed the heterostructure formation, optimized band alignment, and improved light absorption. Radical trapping experiments revealed that superoxide radicals (•O₂⁻) dominated the degradation process, with additional contributions from SO 4 •⁻ , •OH, 1 O 2 , and h⁺. A plausible NOR degradation pathway and the underlying PMS activation mechanism were proposed. This study provides new insights into visible-light-driven PMS activation and presents an effective strategy for antibiotic wastewater treatment.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.4
Wang Xiaoqi,Yang Pengwei,Yu Linzhu,Jiang Haoxuan,Ma Jingxiang,Ma Xiangshuai,Ma Shuangchen
Electrochemical nitrogen reduction reaction (eN2RR) is a highly promising approach for ammonia synthesis under normal temperature and pressure conditions. However, its practical application is limited by the low activity and selectivity of the catalysts. In this study, a series of Fe-MOFs materials were prepared by hydrothermal method, and further sintered to obtain Fe@C materials. The electrocatalytic performance of these materials in eN2RR was systematically investigated. The results showed that MIL-53(Fe)-2 exhibited excellent catalytic activity at -0.4 V vs. RHE, with an ammonia production rate of 1.443 µg·h⁻¹·mg⁻¹ and a Faradaic efficiency of 5.972%. In contrast, the Fe@C material derived from MIL-53(Fe)-1, although having rapid activation characteristics within a narrow potential window, did not perform as well as the former. This work provides a new material strategy and experimental basis for the design of iron-based eN2RR catalysts.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124555
·
IF 7.5
Bingfan Li,Jiahao Liao,Chao Yang,Jiang Han,Tifeng Jiao
Long-term discharge of industrial oily wastewater and frequent oil spills create an urgent demand for high-performance oil-water separation membranes. Conventional membranes are limited by high cost, poor stability, and a trade-off between separation efficiency and recyclability. Meanwhile, massive waste PET plastics trigger severe environmental pollution and resource loss. Herein, waste PET bottles are recycled to fabricate porous electrospun nanofiber substrates, followed by spray-coating nano-silica/epoxy hydrophilic composite layers to obtain superhydrophilic/underwater superoleophobic PET-SE membranes. Combined FTIR, XPS, SEM and EDS characterizations verify successful epoxy grafting and uniform SiO₂ immobilization, with abundant hydrophilic amino, amide and siloxane groups enriched on fiber surfaces. Mechanical tests show the tensile stress rises from 0.78 MPa to 2.3 MPa after modification. The optimized PET-SE3 achieves an ultrahigh water flux of 12756.91 L·m⁻²·h⁻¹ . Its separation efficiency exceeds 98% for six types of immiscible oil-water mixtures, and oil rejection surpasses 90% for corresponding oil-in-water emulsions. After 30 separation cycles, oil rejection remains above 98%, and the membrane exhibits excellent chemical and structural stability. This work realizes resource recovery of waste PET. The PET-SE membrane integrates superior separation performance, robust reusability and scalable eco-friendly preparation, presenting a promising candidate for practical oily wastewater treatment.
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JOURNAL OF CHEMICAL THERMODYNAMICS
·
2026
·
IF 2.5
Kaijian Li,Yuqi Su,Maogang He,Ying Zhang
Reliable diffusion data for alcohol–alkane mixtures are still limited, particularly for systems exhibiting strong non-ideal behavior. In this work, mutual diffusion coefficients for ethanol + n-hexane and n-butanol + n-hexane were measured over the entire composition range at 298.15–308.15 K using digital holographic interferometry. The relative standard uncertainty associated with the optical measurement subsystem was estimated to be 0.0118. After propagation of the identified instrumental uncertainty sources, including temperature control, phase-parameter determination, composition preparation, and material purity, the instrumental relative standard uncertainty of the diffusion coefficients was evaluated to be 0.0121, corresponding to an expanded uncertainty of approximately 2.42% (k = 2). Considering the additional variability among independent experimental realizations, the overall expanded relative uncertainty was estimated to be approximately 4.8% (k = 2). For both systems, the mutual diffusion coefficient shows a pronounced U-shaped dependence on composition, with a minimum at intermediate alcohol mass fractions. In the limit of ω 1 → 0, the mutual diffusion coefficient approaches the tracer diffusion coefficient of alcohol in n-hexane, corresponding to diffusion under infinite dilution conditions. The observed behavior reflects strong non-ideal interactions, primarily associated with hydrogen bonding and composition-dependent molecular interactions. Compared with ethanol, the n-butanol + n-hexane system exhibits stronger non-ideality, consistent with the longer alkyl chain of n-butanol. The experimental data were evaluated using the Darken, Vignes, and UNIDIF models. Among them, the UNIDIF model provided the best overall agreement, although deviations remain significant over the full composition range. For ethanol + n-hexane at 298.15 K, the present results show good agreement with available literature data in terms of the overall composition-dependent trend, supporting the reliability of the measurement methodology. The new diffusion data reported here extend the available database for alcohol–alkane systems and provide a consistent basis for improving transport modeling.
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21139-21154
·
IF 4.4
Mai Quan-Doan,Dang Thi Hanh Trang,Tran Van Tiep,Ngo Thi Loan,Ong Van Hoang,Cao Thi Hong,Nguyen Quang Hoa,Lich Le Van,Nguyen Cong Chi,Mai Xuan Trang,Phan Manh-Huong,Pham Anh-Tuan,Le Anh-Tuan
Surface-enhanced Raman spectroscopy (SERS) is a powerful
analytical
technique capable of providing rapid and noninvasive molecular fingerprint
identification through characteristic vibrational signatures. However,
developing SERS platforms that enable both ultrasensitive and highly
selective detection, particularly for molecules with intrinsically
weak Raman responses, remains a major challenge, yet it is highly
desirable for expanding the currently limited application scope of
SERS. Herein, we introduce a novel plasmonic porous multicore@shell
Ag@UiO-66 nanostructure that synergistically integrates the localized
surface plasmon resonances (LSPRs) of Ag nanoparticles (NPs) with
the selective molecular capture capability of the metal–organic
framework UiO-66. The hybrid structure is fabricated via a simple
solvent-induced self-assembly strategy, enabling in situ formation
of UiO-66 around dispersed AgNPs at room temperature. The resulting
architecture immobilizes multiple AgNP cores within a porous UiO-66
shell matrix, simultaneously stabilizing their plasmonic activity
and generating abundant interparticle hotspots. More importantly,
the UiO-66 shell provides molecular recognition toward salicylic acid
(SA─a bioactive aromatic compound) through synergistic adsorption
interactions involving bidentate coordination with Zr nodes, hydrogen
bonding, and π-π interactions. This cooperative plasmonic-molecular
recognition mechanism effectively concentrates target molecules at
electromagnetic hotspots, leading to significantly enhanced SERS signals.
As a result, the developed platform achieves highly selective and
ultrasensitive detection of SA with a detection limit down to 1 nM,
far surpassing that of traditional SERS substrates (∼1 μM).
Furthermore, machine learning-assisted spectral analysis confirms
the reliable and selective identification of SA in complex mixtures.
This work demonstrates an effective strategy for developing MOF-enabled
selective and ultrasensitive SERS platforms, opening new avenues for
advanced molecular sensing applications.
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PubMed
高影响因子
Separations
·
2026
·Vol. 13
·期 8
·233
·
IF 3.5
Jiawei Wang,Meiqin Zheng
A new efficient coupled process to produce green solvent ethyl propionate was developed, which involved a fixed-bed reactor and pervaporation membrane separation. Firstly, the esterification reaction alone was investigated to explore reaction conditions and kinetics. Secondly, the pervaporation alone was investigated to explore separation conditions and the separation performance of pervaporation membranes. Then, the esterification reaction, coupled with pervaporation to enhance the reaction process, was investigated. Finally, the mathematical model of the esterification reaction, coupled with the pervaporation process, was established. The results showed that the conversion of ethanol reached 78.4% within 5 h. The reaction kinetics were obtained based on the pseudo-homogeneous (PH) model. Under the condition of a circulation flow rate of 100 L/h, the influence of concentration polarization could be well overcome, and a high level of pervaporation could be achieved. The pervaporation coefficients of the four-component system were obtained based on Fick’s law. The dehydration rate increased significantly with the increase in pervaporation temperature, which could effectively enhance the esterification reaction. The model could well predict the experimental results, and the experimental results were in good agreement with the theoretical calculations.
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Nature Communications
·
2026
·
IF 18.1
Wen Jie,Xia Maoting,Fu Hongwei,Lyu Wang,Fan Ling,Zhou Jiawan,Rao Apparao M.,Zhou Jiang,Wen Shuangchun,Lu Bingan
Nonflammable electrolytes are pivotal for improving the safety of potassium-ion batteries. However, their broad adoption has been hindered by the inadequate electrode compatibility of conventional nonflammable electrolytes, which typically result from strong solvation and excessive free solvent molecules. Here, we employ a molecular design strategy that integrates strong coordination capability with anion-reinforced solvation structure, thereby enabling the effective deployment of nonflammable phosphate solvents. By incorporating lengthened functionalized side-chains into the phosphate backbone, the tailored molecule tri(2-butoxyethyl) phosphate achieves robust multi-site chelation via synergistic interactions between the ether oxygen (C-O-C) and the phosphoryl (P=O) groups. Concurrently, its large molecular structure effectively increases the anion-to-solvent ratio in the electrolyte, promoting the formation of stable electrode-electrolyte interphases, and resulting in high compatibility with both the negative and positive electrodes. Consequently, the optimized tri(2-butoxyethyl) phosphate-based electrolyte enables stable cycling of graphite negative electrode (92.7% capacity retention after 800 cycles at 100 mA g −1 ) and Prussian blue positive electrode (4.2 V, 88.6% capacity retention after 3200 cycles at 100 mA g −1 ). Furthermore, the assembled graphite||Prussian blue full cell also maintains 80.3% capacity retention after 1500 cycles at 500 mA g −1 . This work provides a strategy for electrolyte design in potassium-ion batteries.
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OPTICAL MATERIALS
·
2026
·
IF 4.3
Ziying Liu,Ziliang Liu,Lei Chen,Guodong Xu,Shuangshuang Wang,Hui Qiao,Xiang Qi
Bismuth tungstate (Bi 2 WO 6 ), a typical Aurivillius-phase layered oxide, possesses considerable application potential in optoelectronic devices owing to its suitable bandgap structure and favorable chemical stability. However, conventional two-dimensional (2D) materials often suffer from limited light-harvesting efficiency due to their restricted thickness and short optical path length, which hampers their photoelectric conversion performance to a certain extent. To improve this drawback, inspired by the hierarchical structure of natural petals, we constructed a novel three-dimensional (3D) flower-like Bi 2 WO 6 micro-nanostructure assembled from ultrathin nanosheets via a controllable hydrothermal strategy. This special morphology can effectively enlarge the specific surface area and induces multiple light scattering, significantly boosting photo-electric conversion. Consequently, the photodetector based on nanoflower structures exhibits obviously optimized photoresponse performance. Its response time is greatly shorten to 40/285 ms (rise and fall processes respectively). The photocurrent density reaches over 2.34 μA per square centimeter, which is more than doubled that of unoptimized samples, while the responsivity attains 48.7 μA W −1 cm −1 with an increase of approximately sixfold. Furthermore, the fabricated flexible devices can maintain favorable photoresponse capabilities under various bending angles, demonstrating satisfactory mechanical flexibility and stability. This study not only elucidates the underlying mechanism by which the three-dimensional biomimetic flower-like architecture enhances optoelectronic performance, but also provides new insights for the design of high-performance flexible biomimetic photodetectors.
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