JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Zhihua Zhao,Shuhan Chen,Qingsheng Shi,Chao Qiu,Lan Wu,Xinhao Zhang,Peijuan Wu,Longqi Yao
People pay more and more attention to their own health and environmental safety, which makes the monitoring and treatment of harmful amines such as triethylamine (TEA) emitted in the industrial process increasingly critical. In order to address this issue, we focus on the heterostructure construction of two-dimensional rhenium disulfide (ReS 2 ) and acid-functionalized carbon nanotubes (f-MWCNTs), using their unique electronic properties and high specific surface area for triethylamine gas detection. The findings demonstrated that, at room temperature (25°C), the ReS 2 /f-MWCNTs sensor's response to 100 ppm TEA reached 63 %. Under the same environmental conditions (25℃), the response value of the ReS 2 sensor to 100 ppm TEA is 6 %, and the sensing performance is improved by more than 10 times. In addition, the sensor has fast response recovery (73 s/46 s) and good repeatability and stability. Based on this research, we designed a simple detection device, providing a direction for the practical detection application of TEA sensors.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Linna Chang,Yan Qin,Zhou Shen,Di Wu,Xiaoping Yin,Leyong Zeng
Reactive oxygen species (ROS) are critical in tumor therapy, but the antioxidant tumor microenvironment severely restricts the ROS-modulated antitumor efficacy. In this study, a photothermal-promoted cascade nanozyme (MnO 2 @Lap/PAH/L-Arg@Au) was constructed by modifying β-lapachone (β-Lap), poly(allylamine hydrochloride) (PAH), and L-arginine (L-Arg) and depositing gold nanoparticles (AuNPs) on hollow manganese dioxide (MnO 2 ), enhancing ROS-modulated catalytic/gas combination therapy. The pH- and glutathione-responsive hollow MnO 2 degradation released β-Lap to elevate the generation of hydrogen peroxide (H 2 O 2 ), which substantially activated and AuNPs-mediated hydroxyl radical (·OH) generation. Moreover, H 2 O 2 /·OH induces L-Arg to produce highly toxic nitric oxide (NO), and the Au nanoshell with high photothermal conversion efficiency (38.6 %) further enhanced ROS/NO generation. By reducing adenosine triphosphate production and inducing mitochondrial dysfunction, the combination of photothermal/catalytic/gas therapy greatly triggered cell apoptosis and inhibited tumor growth. Thus, the developed MnO 2 @Lap/PAH/L-Arg@Au nanozyme established a dynamic cascade pathway of “ROS-driven NO release”, and achieved photothermal-promoted catalytic/gas therapy.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Mengqi Xiao,Jibao Zhang,Yang Li,Yan Li,Xuejian Liu,Xiaolin Wang,Zhenyuan Yin
Hydrate-based H 2 storage has emerged as a promising solution for offshore wind-to-hydrogen applications. Seawater is widely accessible on offshore platforms and can be directly used as a hydrate former. However, effects of salt in seawater on the kinetics of hydrogen hydrate are less understood and warrants investigation. This study systematically examines the influence of NaCl on the H 2 hydrates formation in the presence of a thermodynamic promoter, 1,3-dioxolane (DIOX). Effects of NaCl on the thermodynamics, kinetics, and morphology of H 2 -DIOX hydrates were investigated. The thermodynamic inhibition on DIOX hydrates is more pronounced than that on H 2 -DIOX hydrates in simulated seawater, resulting in a slurry-like hydrate morphology that improves gas-liquid contact. H 2 final gas uptake achieved in simulated seawater is seven-fold that of pure water with H 2 only occupying 5 12 cages of sII hydrate. Our study provides insights into the direct use of seawater for offshore hydrate-based H 2 storage.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Qian Liu,Huan Liu,Menghua Zhao,Dianqing Li,Yongjun Feng,Pinggui Tang
Layered double hydroxides (LDHs) have broad applications due to their unique compositions and structures. However, the direct preparation of micrometer-sized functional guest intercalated LDH faces huge challenges. Herein, a complexation controlled growth strategy was proposed for directly preparing micrometer-sized functional guest intercalated LDH. As a proof of concept, micrometer-sized 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (BP4) intercalated MgZnAl-LDH (BP4-LDH) with high crystallinity was successfully constructed by the strategy that makes the LDH preferentially grow along the ab two-dimensional plane. The composition, structure, and properties of BP4-LDH were systematically characterized by XRD, FT-IR, SEM, TG-DTA, BET, UV–vis, and so on. The introduction of Zn2+ into the laminate can significantly increase the crystallinity and size of LDH, and BP4-LDH with an average particle size of 5.87 μm was prepared with a Mg:Zn:Al feeding ratio of 1.5:1.5:1. The addition of BP4-LDH can significantly improve the gas barring and antiphotoaging performance of polyurethane (PU) films. The oxygen transmission rate of PU film was reduced from 1898.0 cm3·cm–2·day–1 to 1243.6 cm3·cm–2·day–1 by adding 5 wt % 5.87 μm BP4-LDH. Meanwhile, the addition of BP4-LDH effectively lowered the degradation degree of C–H bonds in PU molecular chains under ultraviolet irradiation, and the decreased integral area value of C–H bonds was reduced from 58.1 to 31.3. Therefore, the prepared micrometer-sized BP4-LDH has potential applications in fields of gas barring and antiphotoaging. Meanwhile, the developed complexation controlled growth method can also be used to prepare other micrometer-sized LDH based functional materials.
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JOURNAL OF MOLECULAR STRUCTURE
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2025
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IF 4.7
Ge Zhu,Mengran Gao,Kejun Bi,Shanshan Zhao
The magnetic biochar is prepared for ciprofloxacin removal by adsorption, photocatalytic degradation and activation peroxodisulfate degradation. The magnetic biochar contains the ZnO, Fe 3 O 4 and FeNi with abundant pore structure, based on characterization analysis. According to Langmuir model analysis, the adsorption amount of ciprofloxacin is 505.16 mg/g. The adsorption mechanism analysis indicates that the surface functional group of magnetic biochar contributes to ciprofloxacin removal from wastewater. The magnetic biochar can be used as the photocatalyst for photocatalytic degradation of ciprofloxacin with removal of the 99.43 %. The ciprofloxacin can be also removed in the activation peroxodisulfate degradation system by reactive oxygen species. The magnetic biochar has excellent reusability in ciprofloxacin removal process. Bio-oil and bio-gas are produced by recycling of pyrolysis gas in the magnetic biochar preparation process. The bio-oil and bio-gas are rich in furfural and H 2 , respectively. Besides, the heating value of bio-gas is 12.35 MJ/Nm³.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yanjun Liu,Zhengju Lyu,Sheng Wang,Yanfeng Zhang,Junbo Wang,Zhuowen Chen,Jianbing Wang
Biomass treatment and efficient energy recovery pose formidable challenges in solid waste management. The activation and functionalization of biochar-based catalysts (BC) derived from the co-pyrolysis of municipal sewage sludge (MSS) and cotton stalks (CS) were systematically investigated. These catalysts were then reintroduced into the same co-pyrolysis system of MSS and CS to evaluate their role in enhancing hydrogen-rich gas production efficiency through in-situ catalytic upgrading. The response surface methodology (RSM) was used to identify the best co-pyrolyzed biochar preparation conditions that would obtain the maximum specific surface area (SSA). BC with the maximum SSA was prepared at a pyrolysis temperature of 900°C, a CS-to-MSS mass ratio of 6:4, and a residence time of 66 min. Potassium hydroxide (KOH), calcium nitrate anhydrous (Ca(NO 3 ) 2 ), and nickel nitrate (Ni(NO 3 ) 2 ) were used for the activation and functionalization of BC. Ni/Ca@KWBC with 30% active components (15% Ni and 15% Ca) loading was the best catalyst with the highest H 2 yield (5.03 mmol/g) and production rate (20.30%). After reuse of the catalyst for five cycles, no serious reduction of H 2 yield is found. Ni primarily promoted reforming reactions that directly increased the H 2 yield, such as the water–gas shift reaction and the steam–methane reforming reaction. Ca adsorbed CO 2 and reduced the activation energy of the reaction, assisting in shifting the equilibrium of the water–gas shift reaction toward H 2 generation. This closed-loop system uniquely repurposes biochar—a traditional low-value byproduct—as a catalyst, offering a novel pathway for integrated waste management and energy production.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhendong Ma,Zhijia Cui,Shunxiang Wang,Zhicheng Lin,Jiying Wei,Yongjin Zou,Lixian Sun,Heinz-Bernhard Kraatz,Cuili Xiang
The development of highly efficient room-temperature ammonia (NH 3 ) sensors is crucial for industrial production and environmental monitoring. However, existing materials generally face critical challenges, including insufficient sensitivity, humidity susceptibility, and limited charge-transfer efficiency. In this study, a synergistic strategy combining electronic structure modulation with heterointerface engineering was employed to fabricate a 2D/1D heterojunction sensing material composed of S-doped WSe 2 @polyaniline (PANI). The electronic band structure was optimized by substituting S atoms into Se sites within the WSe 2 lattice, and in situ oxidative polymerization was used to achieve vertical growth of PANI nanorods on the surface of S-WSe 2 , which significantly enhanced the gas-sensing performance of the composite. The S-WSe 2 @PANI sensor exhibited a remarkable response of 505.75 % to 100 ppm NH 3 at 25 °C and 45 % relative humidity (RH), representing 7.44-fold and 5.32-fold increases compared with pure WSe 2 and PANI sensors, respectively. The sensor also demonstrated an ultra-low theoretical detection limit of 170.31 ppb and excellent moisture resistance (with a response of 857.63 % to 100 ppm NH 3 at 80 % RH). Density functional theory (DFT) calculations revealed that the S-WSe 2 @PANI heterostructure possessed stronger NH 3 adsorption capability, while the work-function difference at the PANI/S-WSe 2 interface effectively promoted charge transfer. This study integrates electronic structure regulation and morphological synergy design strategies to establish an innovative paradigm for high-performance room-temperature NH 3 sensors with substantial potential for application in complex environmental monitoring scenarios.
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WOOD SCIENCE AND TECHNOLOGY
·
2025
·Vol. 59
·期 4
·1-25
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IF 3
Ding Jiarong,Tian Shiyu,Hu Zewen,Zhao Aichen,Liu Yu,Zhu Xiaodong
Formaldehyde released from particleboard poses a serious threat to indoor air quality, and there is an urgent need to develop efficient adsorbents to reduce its release. This study introduces micro-nano chitosan (multiscale chitosan cross-linked polymers, MNCs) as a novel adsorbent, synthesized via ionic gelation and systematically characterized in terms of their specific surface area (0.301 m 2 /g), average particle size (19.96 μm), spherical morphology, and surface functional groups. The formaldehyde emission from particleboard treated with 3% MNCs was found to be reduced to 70.7% of that of the control group on day 28 by the 1 m 3 climate chamber experiment, which was a significant emission reduction effect. The adsorption kinetic analysis showed that the adsorption of formaldehyde by MNCs conformed to the pseudo-second-order adsorption kinetic model, and its chemical adsorption mechanism was attributed to the Schiff base reaction between the amino group on the chitosan ring and formaldehyde. In the C-history experiment, the C m0 of control panel was measured to be 1.94 × 10 5 mg/m 3 and D m to be 2.7 × 10 −8 m 2 /s, whereas after treatment with 3% MNCs, the C m0 ' was reduced to 0.29 × 10 5 mg/m 3 , the D m ' was reduced to 4.31 × 10 −10 m 2 /s and the partition coefficient K was enhanced from 243.9 to 855.5 in the original panels, indicating that the addition of MNCs significantly inhibited the diffusion of formaldehyde, enhanced the retention capacity of formaldehyde in the particleboards, and reduced the initial volatilizable formaldehyde reserves. This study provides theoretical basis and experimental support for the application of MNCs in the pollution control of wood-based panels, whose efficient emission reduction performance originates from the unique nanoporous structure and the active amino sites in chitosan molecules.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Teng-Long Zhou,En-Kang Wu,Jia-Kang Wu,Tian Qiang,Xiao-Feng Gu,Ming-Yang Yan,Svetlana von Gratowski,Jun-Ge Liang
Traditional microwave gas sensors have been widely used for gas detection at room temperature due to the advantages of high sensitivity and multi-parameter detection. However, the detection results can be significantly affected by the change of humidity, which restricts their application in practical environments. To solve this problem, a microwave gas sensor based on SnO 2 /Co 3 O 4 composite nanofibers, a micro-heater and a dual-mode resonator was proposed, achieving high-precision measurement of acetone within the range of 10~500 ppm. The integration of micro-heater can reduce water molecule adsorption, leading to enhanced sensing stability under varying humidity levels. The results demonstrate that the construction of SnO 2 /Co 3 O 4 heterostructures can enhance the sensitivity due to increasing charge transfer capability. The maximum sensitivity reached 3.938 mdB/ppm at the optimal operating temperature of 150 ℃, which is approximately five times higher than that of room temperature conditions. Moreover, the sensitivity of the microwave gas sensor maintains almost unchanged under different humidity, which can be attributed to the integration of micro-heater. This work provides a novel strategy for the design of microwave gas sensors in practical environments.
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JOURNAL OF CHROMATOGRAPHIC SCIENCE
·
2025
·Vol. 63
·期 5
·
IF 1.3
Yang Qinghua,Deng Honghai,Shi Yilan,Qiu Qianying,Wang Jinxin,Ping Wenhui,Gu Jun,Zhang Weibing
A fast, simple and effective method was developed and validated for determination of 11 fungicides using magnetic solid-phase extraction with NH2-Fe3O4@GO (graphene oxide) combined with gas chromatography–triple quadrupole mass spectrometry (GC–MS/MS). To carry out the extraction of the fungicides from samples, NH2-Fe3O4@GO nanocomposites were synthesized and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The target analytes were extracted on NH2-Fe3O4@GO and then eluted by ethyl acetate and acetonitrile (1:1 v/v). Finally, the extraction solvent concentrated by nitrogen blowing was analyzed by GC–MS/MS, which demonstrated good linearity between 0.05 and 5.0 mg L−1. The limits of detection (signal-to-noise ratio = 3) and the limits of quantification (signal-to-noise ratio = 10) for the 11 fungicides ranged from 1.0 to 3.5 and 3.0 to 10.5 μg kg−1, respectively. The accuracy and precision of the proposed method were evaluated by measuring tagged samples; the recoveries and relative standard deviations ranged from 75.3% to 103.9% and 2.19% to 4.68%, respectively. The utility of the adsorbent was demonstrated to determine trace fungicides in fresh fruit juice samples.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Qiufeng Liu,Kaihang Sun,Kun Lu,Xingwei Xie,Longzhou Zhang,Young Dok Kim,Zhongyi Liu,Zhikun Peng
Metal-support interaction (MSI) is an efficient strategy to modulate the distribution of active metal with different electronic states over the oxide-supported metal catalysts. However, the intrinsic correlation between the intensity of MSI and the electronic structure of supported metals remains inadequate. In this work, the intensity of MSI over the Cu/Y 2 O 3 catalyst was tuned by the calcination temperature, which regulated the distribution of Cu 0 , Cu + and Cu 2+ species. The Cu/Y 2 O 3 catalyst with the highest amount of Cu + exhibits the superior performance of reverse water–gas shift reaction. Due to the enhanced H 2 activation and promoted charge transfer at the interfacial Cu + /Y 2 O 3 site based on the experimental characterizations, the CO formation rate reached 220 mmol CO g cat −1 h −1 at 500 °C. The present work provides an efficient way to regulate the supported metal species with the specific electronic state.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Guoxin Jiang,Shenghui Guo,Guangyu Chen,Hao Sun,Runan Jia,Ming Hou,Li Yang
Hydrogen becomes an important clean energy origin, which will explode in open fire at a certain concentration. This leads to great property and personal safety hazards in the process of hydrogen storage, transportation and leakage. Low temperature and low concentration hydrogen detection is very necessary. In this paper, MXene-TiO 2 -ZnO ternary composites were successfully prepared by one-step in-situ oxidation method using MXene and Zn(NO 3 ) 2 ·6H 2 O as precursors for 1h. The microstructure of the samples was characterized by XPS, TEM, SEM and Raman, and their gas sensing properties were tested. The results show that the Ti 3 C 2 T x -TiO 2 -ZnO structure exhibits a layered accordion-like morphology. Under room temperature (RT 25 °C) and UV light irradiation, the response value of MTZ-1 sample to 1000 ppm hydrogen reaches 73.39 %, which is 96.8 % higher than that of pure Ti 3 C 2 T X . At the optimum operating temperature (100 °C), the response value of MTZ-1 to 1000 ppm hydrogen reached 96.77 %, the detection limit was as low as 1 ppm, and the response value was 1.7 %. The results show that the formation of TiO 2 -ZnO heterojunction, the retention of Ti 3 C 2 T x layered structure and UV irradiation are the main reasons to improve the gas sensing performance (GSP). In this paper, the formation of TiO 2 -ZnO heterojunction, the retention of MXene layered structure and the synergistic enhancement of gas sensitivity by UV excitation were revealed by systematic characterization and mechanism analysis. This research provides a new idea for the development of low energy consumption and high sensitivity room temperature hydrogen sensor, which has important practical application value.
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