Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
IF 6.3
Bing Liao,Ziyi Wang,Ruyi Chang,Zhengchun Hu,Qiuyue Ye,Wen Xu,Jiale Wu,Zhuoyuan Zhou,Wu Shen,Na Guo,Lingfeng Huang,Zhicheng Pan
Background Sulfate radical−based advanced oxidation processes (SR-AOPs) show promising prospects for the pretreatment and advanced treatment of ammonia nitrogen in landfill leachate. However, in high chloride ion environments, SR-AOPs often lack selectivity, leading to the over-oxidation of ammonia nitrogen to undesirable nitrate NO 3 − and NO 2 − rather than the desired N 2 , which remains a major challenge. Methods In this study, CoFe 2 O 4 was prepared by a gel-calcination method and the effects of chloride ions (Cl − ) and other parameters on the performance of CoFe 2 O 4 -activated peroxymonosulfate (PMS) oxidation system for the removal of ammonia nitrogen and the selectivity of oxidation products were systematically investigated. Significant findings Cl − played a crucial role in determining the ammonia removal efficiency and nitrogen selectivity. Under the optimum conditions of 30 mM of PMS, 0.1 g/L of catalyst and 20 mM of Cl − , the ammonia removal efficiency of the system was nearly 100 %, and the nitrogen selectivity reached 88.1 %. The main species in the activation process of the PMS was Co(II)-OH, and the formation of this complex was promoted by Fe(III). SO 4 · − , HO · , and chlorine species (Cl · , ClO · , and HClO) were generated in the system. Among them, SO 4 · − and HO · indirectly contributed to ammonia oxidation by reacting with Cl − to produce reactive chlorine species, which subsequently oxidized ammonia nitrogen.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Haoyang Ge,Tianle Wang,Ming-Yu Li,Songhua Xie,Haifei Lu,Xiaoyan Wen,Cong Wang,Sisi Liu
Hydrogen plays a vital role in zero-carbon energy systems and lithium-ion battery health monitoring, while its safe utilization faces a critical challenge in achieving high-accuracy room-temperature detection with fast response speed. Herein, Ti 3 C 2 T x ternary composites decorated with Pd and SnO 2 nanoparticles (MPS) are successfully synthesized via a facile approach at 80 ˚C with a high hydrogen sensitivity based on a synergetic effect. Within the MPS composites, the dissociation energy barrier for hydrogen molecules can be drastically reduced with the existence of Pd nanoparticles, boosting the ionization of active hydrogen atoms at the heterointerface between SnO 2 and MXene via the hydrogen spillover effect. The isomorphous substitution of Ti 3+ by Sn 4+ generates abundant holes at the heterointerface, and the built-in electric field formed at the heterointerface subsequently promotes the recombination of these holes with the electrons generated during hydrogen ionization. Benefitting from the series of reaction, the optimal response of 73.5% is obtained with fast response/recovery time of 47 s/36 s upon exposure to 200 ppm H 2 at room-temperature. In addition, an outstanding linearity (R 2 =0.9908) is achieved within a range between 5 and 200 ppm, resulting in a superior LOD of 1.96 ppm. The MPS composite gas sensor simultaneously exhibits exceptional selectivity and cycling stability, shedding light on the new perspective of high-performance room-temperature gas sensing.
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JOURNAL OF POLYMER MATERIALS
·
2026
·Vol. 43
·期 2
·
IF 3.5
Feng Dai,Jiajun Xie,Yingmin Liu,De Heng,Yinfu Han,Shanshan Hou
With the increasing emphasis on green, low-carbon, and sustainable development in shale gas drilling fluids, the utilization of waste biomass resources to develop high-performance drilling fluid additives has emerged as an important research direction that balances engineering requirements with environmental responsibility. In this study, waste cotton–derived polyanionic cellulose (bio-PAC) was employed as the base material, and sulfonate and carboxylate functional groups were introduced via free-radical graft copolymerization to synthesize a modified cellulose polymer, PAC-g-(sodium vinyl sulfonate, SVS/sodium methallyl sulfonate, SMAS/methacrylic acid, MAA). Structural characterization confirmed the successful grafting of the target functional groups onto the cellulose backbone. The resulting polymer exhibited high thermal stability, with a decomposition temperature up to 330°C under a nitrogen atmosphere, and demonstrated favorable environmental compatibility (EC 50 = 73,000 mg/L). Performance evaluation showed that, in bentonite-based mud systems, the addition of 30 g/L PAC-g-(SVS/SMAS/MAA) followed by aging at 160°C for 16 h resulted in apparent viscosity (AV) retention rates of 81.3%, 73.6%, and 76.4% in freshwater, saturated brine, and mixed-salt based muds, respectively, while the corresponding low-temperature low-pressure (LTLP) filtration volumes were all below 5.0 mL. In shale gas water-based drilling fluid systems, when the dosage was 20 g/L, the drilling fluids maintained stable rheological structures after high-temperature aging at 160°C–180°C, with AV values of 33.5–42.5 mPa·s and yield point (YP) values exceeding 8.5 Pa, significantly outperforming commercial hydroxyethyl cellulose (HEC)– and polyanionic cellulose (PAC)–treated systems. Meanwhile, the high-temperature high-pressure (HTHP) filtration volumes were reduced to 9.8–18.6 mL, corresponding to reduction rates of 82.2%–91.3%. Scanning electron microscopy (SEM) observations of the filter cakes revealed that PAC-g-(SVS/SMAS/MAA) promoted the formation of continuous and compact filtration barrier structures under high-temperature conditions, thereby effectively inhibiting particle migration and pore connectivity. These results demonstrate that the developed polymer can simultaneously achieve significant viscosity enhancement and efficient filtration control in high-temperature shale gas water-based drilling fluids, indicating promising potential for practical engineering applications.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Manman Wu,Wenwei Qiu,Yuliang Su,Wei-Wei Zhao,Ninghui Song,Bin Hu,Guangxu Chen
Background Volatile organic compounds (VOCs), ubiquitous aquatic pollutants, have garnered global attention due to their potential threats to aquatic organisms and human health. While purge-and-trap (P&T) with gas chromatography-mass spectrometry (GC-MS) is the standard detection method, commercial systems face limitations in detection limits and contamination resistance due to sorbent traps. This study developed an adsorbent-free ultra-low-temperature P&T system using Stirling cryogenic refrigeration technology, integrated with fully automated online sampling and quality control modules, thereby establishing a robust GC-MS monitoring platform. Results The developed system achieves quantitative VOC capture at −120°C without adsorbent materials, eliminating trap degradation and cross-contamination. Comprehensive validation using 56 representative VOCs demonstrated exceptional analytical performance in full-scan data acquisition mode: linear dynamic range of 0.1–10 μg L −1 (R 2 > 0.9975), method detection limits (MDLs) of 0.005–0.016 μg L −1 , precision of 2.0–5.2% (RSD, n = 6), and trueness of 86.9–115.7% (recovery). A 15-day continuous field validation in real drinking water sources confirmed system robustness (recoveries ranging from 70.0% to 130.0% for 94.6% of all target compounds). Significance This adsorbent-free approach differs from conventional adsorption-based methods by relying on condensation for VOC enrichment. It achieves detection limits more than five times lower than China's standard GB/T 5750.8-2023 method (0.055-0.365 μg L −1 ) while avoiding carryover contamination and adsorbent-related maintenance. By eliminating consumable trap packing and supporting autonomous operation through integrated QC protocols, the system reduces operational costs and personnel requirements. These characteristics make the technology suitable for unattended, long-term online monitoring in complex environmental matrices, providing a practical option for real-time surveillance of hazardous VOCs in remote water sources and facilitating rapid response to episodic pollution events.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 28
·15242-15253
·
IF 3.9
Xu Zhen,Liu Zheng,Meng Lina,Lu Yuan,Fan Shiguang,Chen Feng,Wang Yiwei,Sun Qiang,Guo Xuqiang
The
valorization of nitrogen-rich low-grade natural gas (N 2 -lgNG) presents a dual challenge of mitigating greenhouse
gas emissions and securing strategic helium resources. This study
demonstrates the technical feasibility and optimization of a two-stage
hydrate-based gas separation (HBGS) process for the simultaneous capture
of light hydrocarbons (methane and ethane) and enrichment of low-abundance
helium (0.52 mol %) as a crucial industrial pretreatment step. A systematic
methodology integrating response surface methodology (RSM) and multiobjective
optimization was employed. RSM was used to develop accurate proxy
models that quantify the effects of the gas–liquid ratio (GLR),
temperature ( T ), and pressure ( P ) on three key separation performance metrics: light hydrocarbon
capture rate (CR LH ), helium concentration in the residual
gas (cHe res ), and helium recovery rate (RR He ). The analysis identified temperature as the most sensitive parameter
for separation performance. The nondominated sorting genetic algorithm
II (NSGA-II) was applied to proxy models to generate a Pareto-optimal
frontier of solutions. The entropy-weighted technique for order of
preference by similarity to ideal solution (TOPSIS) was then utilized
to impartially select the single best-compromise operating condition:
GLR of 90 N m 3 /m 3 , T of 279.15
K, and P of 5.00 MPa. Experimental validation under
the optimal conditions achieved a CR LH of 91.05%, a 6.3-fold
increase in cHe res (reaching 3.27 mol %), and an RR He of 78.25%. This work not only proves the efficacy of the
two-stage HBGS process for integrated resource recovery from challenging
gas streams but also establishes a model-driven optimization framework
for the design of HBGS technology.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Qingsheng Shi,Ziyi Guo,Yabo Wei,Chen Chen,Zhihua Zhao
The safety issues arising from electrolyte leakage in lithium-ion batteries are becoming increasingly prominent, rapid detection of trace volatile organic solvents (ethyl methyl carbonate, EMC) is key to early warning. In this study, monodisperse palladium-rhodium (PdRh) alloy nanoparticles were prepared hydrothermally and anchored to the exterior of SnO 2 nanostructures. An impregnation approach yielded a series of PdRh–SnO 2 gas-sensing materials with varying mass fractions. Gas-sensing test results indicate that at 260 °C, the 0.7 wt% PdRh-SnO 2 sensor responds with 87.4–100 ppm EMC. Compared to interfering gases, this sensor demonstrates a high selectivity towards ethyl methyl carbonate, with response/recovery times of 21 s/16 s. These excellent sensing properties arise from the introduction of bimetallic nanoparticles, which significantly refines the surface electronic landscape and active-site population, while the formation of an interfacial Schottky barrier effectively amplifies the gas response signal. Furthermore, through simulation experiments based on an STM-32 microcontroller platform, the sensor exhibits outstanding practical application performance. This study introduces an effective and dependable route to the early identification of electrolyte leakage.
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Fermentation-Basel
·
2026
·Vol. 12
·期 2
·102
·
IF 4.1
Xun Fu,Qingyu Nie,Xiang Li,Penghao Tan,Tingting Feng,Chunmei Xiong,Wenling Zhang,Yan Zhang,Sujin Li,Lixin Zhang
In recent years, there has been substantial global progress in screening yeasts for fermenting various specialty fruits, especially non-Saccharomyces species known for their contributions to aroma enhancement. This study focused on mature fruits and soil samples collected from orchards located in the main production region ofC. reticulatacv. ‘Dahongpao’ (CRCD) in China, with the objective of isolating specialized non-Saccharomycesyeasts suitable for producing CRCD fruit wine. After enrichment cultivation, seven characteristic yeast strains were isolated and purified. These isolates were identified asCandida parapsilosis,Meyerozyma caribbica,Candida quercitrusa, andMeyerozyma guilliermondiithrough a combination of microscopic morphology and molecular biology methods, which also includedPichia fermentans,Pichia kudriavzevii, andPichia kluyveri. The strains’ fermentation potential, ethanol production rates, and tolerance levels were assessed, leading to the selection ofCandida parapsilosis,Candida quercitrusa,Pichia fermentans,Pichia kudriavzevii, andPichia kluyverifor further fermentation experiments. The commercial yeast La-Ma was used as a control. Analysis of volatile organic compounds (VOCs) in the fruit wine samples was performed using Gas Chromatography–Ion Mobility Spectrometry (GC-IMS). A total of 42 different VOCs were identified, with esters being the most prevalent. The fingerprint profiles demonstrated notable differences between the fruit wine samples fermented with selected yeasts and those fermented with commercial yeasts. Principal component analysis (PCA) indicated thatPichia kluyveridisplayed the most significant divergence from both commercial and other selected yeasts. The samples contained notable VOCs such as 2-methyl-1-butanol, pentanal, 3-methyl-2-butenal, propyl acetate, butyl acetate, isobutyl acetate, isopentyl acetate, and 3-methyl-2-butenyl acetate, while the methanol production was observed to be lower compared to other samples. Consequently, this strain has the potential to produce distinctive fruit wine.
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JOURNAL OF PHARMACEUTICAL SCIENCES
·
2026
·
IF 3.9
Dexue Liu,Sajid Asghar,Dan Gao,Wenrong Li,Haijuan Dong,Tingmei LYU,Zhipeng Chen,Yanyu Xiao
Combination therapy, which integrates diverse treatment modalities to induce synergistic anti-tumor effects, has emerged as a promising strategy in oncology. In this study, we developed a near-infrared (NIR) laser-triggered nitric oxide (NO)-releasing and enzyme-sensitive targeted drug delivery system BNN6/EPI-HA@HP-PDA) for the synergistic treatment of breast cancer via combined chemotherapy, NO gas therapy, and photothermal therapy. The system was constructed based on polydopamine (PDA) nanoparticles modified with hyaluronic acid (HA) and hydroxypropyl-β-cyclodextrin (HP-β-CD), co-loaded with epirubicin (EPI) and the NO donor BNN6 (N, N'-di-sec-butyl-N, N'-dinitroso-1,4-phenylenediamine). The resulting spherical nanoparticles exhibited a uniform size of 180.26 nm and a zeta potential of -27.69 mV, with high drug loading and encapsulation efficiencies of 12.04% and 98.10% for EPI and 46.91% and 88.14% for BNN6, respectively. In vitro release studies confirmed nanoparticles’ responsiveness to hyaluronidase, pH, and NIR irradiation. Cellular assays revealed significantly enhanced cytotoxicity of BNN6/EPI-HA@HP-PDA in both MCF-7 and MCF-7/ADR cells, attributable to the combined effects of PDA-mediated hyperthermia, EPI-induced chemotherapy, and NO-mediated gas therapy. Pharmacokinetic evaluation showed a 4.62-fold increase in the area under the curve of BNN6/EPI-HA@HP-PDA compared to free EPI solution. In vivo experiments further demonstrated potent tumor growth inhibition (96.71%) in MCF-7/ADR tumor-bearing Balb/c mice treated with BNN6/EPI-HA@HP-PDA plus laser irradiation, with no detectable systemic toxicity. In general, BNN6/EPI-HA@HP-PDA presents a combination strategy of photothermal/gas/chemotherapy for the synergistic therapy of breast cancer.
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122388
·
IF 7.5
Guangqian Kuang,Xingming Jin,Hong Jin,Xiangyong Zheng,Min Zhao,Wenjuan Han
Benthic fauna play a crucial role in ecosystem processes in constructed wetlands (CWs), yet their influences on the stability of nitrogen removal and greenhouse gas (GHG) emissions under antibiotic stress remain unclear. In this study, we investigated the effects of benthic fauna species richness (zero, one, and three species) and species compositions on the stability of nitrogen removal and GHG emissions in CWs under antibiotic stress. Results showed that: (1) At a species richness of three, reduced stability of the nitrifying bacterium Nitrospira abundance led to decreased stability of effluent nitrate concentrations. In contrast, systems containing Bellamya aeruginosa and Chironomus riparius enhanced the stability of effluent ammonium and total inorganic nitrogen concentrations. This improvement was mainly attributed to more stable plant nitrogen uptake, stabilized activities of key nitrogen-cycling enzymes (nitrate reductase and nitric oxide reductase: NOR), and stabilized denitrifying and organic matter-degrading bacterial communities. (2) At a species richness of one, increased stability of key denitrification enzymes, including NOR and nitrous oxide reductase, enhanced the stability of N₂O emissions. Moreover, benthic fauna compositions regulated the stability of plant antioxidant enzymes, key nitrogen transformation enzymes, methylotrophic bacteria, and carbon mineralization–associated bacteria, thereby influencing the stability of GHG emissions. (3) Multifunctionality stability analysis further indicated that the Corbicula fluminea systems exhibited relatively poor performance and should be avoided in practical applications. Overall, our findings demonstrate that benthic fauna diversity is a key determinant of CW stability under antibiotic stress, with important implications for the optimization of CW design and management.
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MOLECULES
·
2026
·Vol. 31
·期 8
·1338
·
IF 5.1
Haibo Li,Hongxing Xu,Lei Yue,Yining Zhou,Yanhong Li,Kongjie Wang,Changzhou Tao,Boli Yang,Long Chai,Haihong Feng
In this paper, to remove the water lock effect in tight gas reservoirs, amphipathic polymer-modified titanium quantum dots (PTQs) were synthesized via in situ polymerization, showing a hyper-branched structure and an excellent synergistic effect with the nonionic fluorocarbon surfactant to break the water lock. The molecular structure, fluorescent property, and micromorphology of the PTQs were obtained. The surface activity and wettability alteration of rock are discussed. Results show that PTQs have zwitterionic hydrophilic groups and the hydrophobic structure of long-chain groups on their molecular structure. PTQ fluid, with a median particle size of 3.6 nm, showed strong green fluorescence and had excellent dispersibility in 50,000 mg/L of standard saline fluid at 120 °C. Additionally, the surface tension decreased to 18.6 mN/m at a PTQ concentration of 0.08%. At a 0.1% concentration, PTQ fluid altered the water wettability of tight sandstone to 67.2°, which resulted in lower capillary resistance. Furthermore, the surfactant (PHPE) had a good synergistic effect with the PTQs to decrease surface tension and alter the wettability of the sandstone surface, leading to lower surface tension and significant amphiphobicity. The strong surface activity of PTQs results from their specific molecular structure, which enables electrostatic attraction, quantum size effects, hydrogen bonding, and van der Waals forces between the inter-polar molecules of PTQs and the surface of sandstone to forcefully eliminate the water lock effect. This study offers key guidance for the development of a high-performance water-lock-breaking agent and application of titanium quantum dots in tight gas reservoirs.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Shixin Ma,Zhihua Zhao,Chen Chen,Zhuo Chen
1-Octen-3-ol is a characteristic volatile organic compound released from moldy wheat. Therefore, the development of high-performance gas sensors for 1-octen-3-ol detection is of great significance for ensuring grain safety by enabling real-time monitoring of wheat quality. However, substantial challenges remain, including poor selectivity and insufficient stability. To address these limitations, this study designed and successfully synthesized a three-dimensional nest-like Tungsten trioxide (WO 3 ) structure decorated with FeCo nanoalloys. By modulating the loading amount of the iron (Fe) cobalt (Co) alloy, we achieved precise tuning of surface oxygen vacancies and facilitated efficient electron transfer within the nanocomposite, resulting in a significantly enhanced gas response. The optimized 1.5FeCo@WO 3 sensor exhibited a high response value of 12.68 toward 100 ppm 1-octen-3-ol, along with superior selectivity and excellent long-term stability. Systematic material characterizations, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analyses, confirmed that the composite possesses a high specific surface area, abundant oxygen vacancies, and a robust interfacial electronic interaction between the FeCo alloy and the WO 3 matrix. Furthermore, density functional theory calculations were integrated into the mechanistic analysis. Consequently, this work yields a promising sensor candidate for the early warning of wheat diseases and proposes a material design strategy for developing economical, high-sensitivity gas sensors for agricultural applications.
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POLYMER DEGRADATION AND STABILITY
·
2026
·
IF 8.1
Bin Zou,Jingyao Xu,Jingwen Wang,Xiaochuan Li,Xiangliang Tian,Xiaodong Qian,Yuan Hu,Shuilai Qiu
Building fires remain a critical global threat, necessitating advanced strategies to stabilize polycarbonate (PC) against thermal degradation. Inspired by the natural phosphorus cycle, we report a "phosphorus fixation" strategy to modulate the decomposition pathways of PC. By in-situ anchoring MIL-125(Ti) onto black phosphorus (BP) nanosheets, a hybrid black phosphorus-MIL-125(Ti) (BP-TiMOFs) flame retardant was synthesized and characterized. At a minimal loading of 2.0 wt%, BP-TiMOFs remarkably enhanced the thermal oxidative stability, increasing the initial decomposition temperature (T -1% ) by 54.95 °C. More importantly, it achieved a 78.22% reduction in peak heat release rate (PHRR) and significantly suppressed smoke and toxic gas emissions. Systematic mechanistic studies reveal that the Ti cations effectively "fix" the volatile phosphorus fragments into the condensed phase, triggering a robust phosphorus fixation effect and forming a stable protective layer. This work provides molecular-level insights into how metal-coordinated phosphorus regulates the distribution of degradation products between the gas and condensed phases, offering a robust template for designing high-performance fire-safe polymers.
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