ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Xue Liu,Jian Wu,Jingzhu Li,Qijie Wang,Yuyang Wang,Nantao Hu,Jianhua Yang,Min Zeng,Zhi Yang
The electric vehicle industry faces safety challenges from battery thermal runaway, necessitating real-time monitoring of multi-parameter signals like gas concentration and temperature in oxygen-free environments. This study introduces dual-parameter micro-electro-mechanical system (MEMS) sensors based on 1D conductive metal-organic frameworks (MOFs) – MBTA (M = Cu or Ni). Synthesized via room-temperature wet chemical coordination polymerization using 1,2,4,5-benzenetetramine ligands and transition metals, these chain-structured MOFs exhibit dual sensitivity to carbon monoxide (CO) and temperature. The MBTA films are grown in situ on 4-channel MEMS devices through vapor diffusion, creating gas-temperature sensors. Under anhydrous, oxygen-free conditions, the sensors achieve low CO detection limits with high selectivity and stability, while demonstrating linear temperature responses across 20–120 °C. Polydimethylsiloxane encapsulation isolates the CO-sensing channels from temperature-detection channels, enabling decoupled parameter measurements. Integrated with data processing and wireless transmission modules, the system supports remote environmental monitoring. This work advances multimodal sensing mechanisms with temperature compensation and lays the groundwork for wireless real-time monitoring systems, significantly enhancing thermal runaway early-warning capabilities in lithium-ion batteries. The design strategy provides insights for developing multifunctional sensing materials and safety management technologies in energy storage applications.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jihan Yang,Airong Li,Junping Guo,Zhihong Wang
The control of sulfur dioxide (SO 2 ) emissions from natural gas purification processes has become an urgent environmental priority due to increasing regulatory pressures and public concerns over air pollution. In this study, a series of 1-methylimidazolium-based ionic liquids ([MIM]-ILs) were synthesized and structurally characterized, followed by systematic evaluation of their SO 2 absorption capacities under simulated flue gas conditions (2000 ppm SO 2 ). Among them, [MIM]Lac showed the relatively better absorption performance, reaching a saturated capacity of 1.986 mol SO 2 per mol IL at a low concentration of 2000 ppm SO 2 . The regeneration experimental results demonstrated that [MIM]Lac achieved an optimal SO 2 removal efficiency of 99.71 % at 85 °C, indicating excellent thermal responsiveness. Even after 10 consecutive absorption-desorption cycles, [MIM]Lac retained 92.52 % of its initial absorption capacity, highlighting its outstanding cyclic stability and thermal durability. The insights based on FT-IR and 1 H NMR analyses revealed that SO 2 absorption by [MIM]Lac primarily involved the reversible chemical interactions between SO 2 and the lactate anion, particularly at the S O and S−O sites. This study provides a practical strategy for designing efficient SO 2 absorbents and the development of ionic liquid-based desulfurization systems.
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RENEWABLE ENERGY
·
2025
·
IF 9.1
Runqiu Dong,Hanbing Jia,Jianghua Tian,Zhigang Liu,Zhiyong Peng,Jialing Xu,Hui Jin,Bin Chen,Liejin Guo
Supercritical water gasification (SCWG) of food waste to produce combustible gas is highly promising. The existing work has focused on the evolution of gas products under various operating parameters, with limited consideration of the reaction mechanism. This work comprehensively investigated the product distribution, conversion pathways, and kinetic mechanisms of food waste gasification in supercritical water (SCW). The results indicated that increasing temperature, reaction time, and decreasing feedstock concentration can enhance the production of gas. There was no significant change in the pressure range of 23–31 MPa for gas products and liquid products. The carbon gasification efficiency (CE) and hydrogen gasification efficiency (HE) can reach 82.61 % and 78.21 % by parameter optimization (temperature of 650 °C, pressure of 25 MPa, concentration of 2 wt%, reaction time of 30 min). The reaction pathways of food waste in SCW were summarized to be mainly through the hydrolysis of food waste, degradation of chain and cyclic hydrocarbons, and conversion between gaseous products. The correlation between the experimental data and the reaction limit was analyzed through a comparative analysis of the experimental results with the thermodynamic equilibrium results to provide the direction of regulation of total gasification. The classical deceleration model indicates that the reaction rate of the process is maximum at the initial moment and then decreases with increasing reaction time. The rapid gasification of chain hydrocarbons and the slow degradation of cyclic hydrocarbons caused the food waste SCWG to exhibit a fast and then slow deceleration process. The activation energy of food waste SCWG was calculated as 194.30 kJ/mol. This work may be of great value in understanding the response process of food waste SCWG.
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MOLECULES
·
2024
·Vol. 29
·期 16
·3843
·
IF 4.2
Xinbao Li,Kai Sun,Ying Chen,Ye Yuan
As a widely used support, TiO2has often been combined with Pd to form highly sensitive gas-chromic materials. Herein, we prepared a series of Pd/TiO2catalysts with different Pd content (from 0.1 to 5 wt.%) by the impregnation method for their utilization in fast room-temperature CO detection. The detection was simply based on visible color change when the Pd/TiO2was exposed to CO. The sample with 1 wt.% Pd/TiO2presented an excellent CO gasochromic character, associated with a maximum chromatic aberration value of 90 before and after CO exposure. Systematic catalyst characterizations of XPS, FT-IR, CO-TPD, and N2adsorption–desorption and density functional theory calculations for the CO adsorption and charge transfer over the Pd and PdO surfaces were further carried out. It was found that the interaction between CO and the Pd surface was strong, associated with a large adsorption energy of −1.99 eV and charge transfer of 0.196e. The color change was caused by a reduction in Pd2+to metallic Pd0over the Pd/TiO2surface after CO exposure.
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Advanced Fiber Materials
·
2025
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IF 21.3
Cheng Nianlong,Xue Haonan,Chen Zhigang,Feng Shasha,Kang Yutang,Zhong Zhaoxiang,Xing Weihong
Filtration materials are designed with nanofibrous structures to address the trade-off effect between filtration efficiency and resistance. However, achieving a breakthrough in these performance metrics remains challenging. Inspired by the white stork wing, we present a novel rod‒ribbon interwoven nanofiber membrane with ultraefficient filtration efficiency for PM. The silica (SiO 2 )/tin dioxide (SnO 2 ) hybrid membrane was fabricated using a one-step electrospinning approach, where its unique structure was formed under the influence of solvent nonequilibrium evaporation during the electrospinning process. The optimized interwoven structure enables the membranes to achieve an outstanding filtration efficiency of 99.96% for PM 0.3 at an airflow velocity of 5.33 cm/s while maintaining a minimal pressure drop of 62 Pa ( \(Q_{{\text{f}}}\) = 0.12 Pa −1 ). The mechanisms underlying the material's formation and the enhancement of its filtration performance were systematically analyzed. Consequently, this study provides novel insights and methodologies for developing high-performance air filtration materials, thereby supporting the strategic objectives of low-carbon development. Graphical
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Lingxiao Xue,Jiahao Cui,Ruiying Li,Wenhe Xie,Keyu Chen,Hongxiu Yu,Limin Wu,Tianjun Ni,Qin Yue,Yonghui Deng
Cells have greatly inspired advancements in chemical processes, including leveraging the idea of cascade catalysis to drive thermodynamically unfavorable reactions and mimicking the compartmentalized architecture to design novel nanostructures. Here, a single-particle cascade catalysis promoted gas sensing platform is inspired to be designed (denoted as CoSnO 3 @mCeO 2 ) by positionally assembling n-type mesoporous CeO 2 catalytic shell on p-type CoSnO 3 gas sensitive core. Uniform CoSn(OH) 6 @mCe(OH) x core–shell particles with tailored mesostructures, tunable large mesopores, and adjustable shell thicknesses are first constructed. After thermal treatment, CoSnO 3 @mCeO 2 particles are obtained, which serve as cascade catalysis enhanced sensitive layer for fabricating gas sensors with independent catalytic and sensing control. As a proof-of-concept, the CoSnO 3 @mCeO 2 gas sensors exhibit nearly three times higher acetone sensitivity ( R g /R a = 26.81–50 ppm) than individual CoSnO 3 sensors with an ultralow limit of detection of 5.22 ppb. The enhanced sensitivity is achieved through a tandem catalytic reforming-oxidation sensing procedure, which begins with the primary catalytic reforming of acetone to acetic acid in the mCeO 2 shell, followed by the secondary sensing reaction of acetic acid in the CoSnO 3 core. The design concept of cascade catalysis promotes gas sensor can serve as a paradigm for developing single-particle functional nanodevices for various applications.
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Deqi Fan,Chengxiao Zhao,Yi Lu,Guangyao Zhang,Zongze Li,Xiang Wang,Xiaofei Yang
Organic photocatalysts generally suffer from insufficient near-infrared light absorption and undesirable photogenerated charge transport properties, resulting in unfavorable hydrogen evolution performance from water splitting. Hydrogen evolution reaction (HER) is also known to be significantly influenced by the interfacial charge and mass transfer in a catalyst/H 2 O biphase system. Herein, for the first time, a highly stable and floating hydrogen-water cogeneration hybrid hydrogel that utilizes photothermal-induced interface microenvironment variation to accelerate sluggish photocatalytic water splitting reaction is reported. Supported by solar-powered interfacial evaporation and efficient vapor generation, the rationally designed hydrogel effectively transforms the conventional liquid-solid interface into a gas-solid photocatalytic interface. The presence of gas-liquid coexistence state offers a disordered and loose hydrogen-bond network while preserving the proton transfer channel, greatly reducing reaction activation energy and interfacial energy barriers. The improved heat and mass transfer together with optimized charge transfer pathways suppress electron-hole recombination, the integrated photothermal-coupled solar photocatalytic hydrogel exhibits excellent operational stability and self-adaptive rotation in seawater, mitigating salt accumulation and achieving an exceptional vapor generation rate of 4.71 kg m −2 h −1 and a hydrogen-evolving rate of 1961.25 µmol g −1 h −1 under one sun illumination.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Hui Zhao,Xin-Pu Fu,Wei-Wei Wang,Jin-Cheng Liu,Chun-Jiang Jia
Despite the supported Au demonstrating superior activity in catalyzing various reactions, their stubborn and widespread deactivation issue has long remained unsolved. Therefore, the challenge in current investigations of Au-based catalysts could be divided into two aspects: uncovering the authentic molecular induction for the deactivated evolution and fabricating interfacial structures combining efficiency and stability. In this work, by incorporating NiO x (H) adjacent to small active Au 1 /Au n species, the as-formed 0.5Au-5NiO x (H)/CeO 2 catalyst simultaneously achieved high reactivity ( r = 5.23 mmol CO ·g Au −1 ·s −1 ) toward the water-gas shift (WGS) reaction and remarkable long-term stability with time-on-stream of 100 h at 250 °C, significantly surpassing the reference Au/CeO 2 counterpart as well as the other oxides-supported Au catalysts reported previously. Comprehensive in-situ characterizations and DFT calculations revealed that the CO molecules, rather than H 2 , H 2 O, or CO 2 molecules, are the dominant molecular driver for Au aggregation, correspondingly inducing the degraded catalytic efficiency. Specifically, on the one hand, the strong CO−Au coordination degraded the ejection barrier of Au atoms from Au-Au coordination; on the other hand, the −OH groups as intermediates from H 2 O dissociation, participating in the stabilization of Au species upon the surface, were dynamically consumed by CO molecules. For these regards, the adjacent Ni adatoms promote the sufficient generation of stable −OH groups for stabilizing Au atoms under WGS reaction. As a result, the corresponding Au−Au ejection and Au−O diffusion barriers of as-formed Au n −O(H)−Ni/CeO 2 combinations are significantly enlarged, which thereby boosts the structural stability in the CO-containing atmospheres.
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Nano Today
·
2023
·
IF 17.4
Xiaoting Gao,Lei Yan,Wei Zhang,Yuanliang Lv,Peiyan Ou,Ruiqiang Hang,Ang Gao,Liping Tong,Paul K. Chu,Huaiyu Wang
Carbon monoxide (CO) has great potential in the therapy of osteoarthritis (OA), but its controllable delivery in vivo is still an intractable problem. To optimize CO gas therapy for OA, a stable CO release platform with multi-stimulus responsiveness must be designed. Herein, we describe a local delivery system (Fe 3 (CO) 12 @Croc-PEG5K) for near-infrared fluorescence (NIRF) imaging-guided photothermal treatment and CO gas synergistic therapy. As a nano gas tank, Fe 3 (CO) 12 @Croc-PEG5K releases CO on-demand under near infrared (NIR) laser irradiation, scavenges free radicals and regulates the pH in the OA microenvironment , and relieves the inflammatory response of macrophages to maintain the vitality of chondrocytes . Furthermore, the pH-dependent NIRF imaging properties of Fe 3 (CO) 12 @Croc-PEG5K can be exploited to determine the administration interval and auto-monitor the curative effects during the therapeutic process. Owing to these merits, the photothermal and CO gas synergistic therapy mediated by Fe 3 (CO) 12 @Croc-PEG5K can be optimized to deliver outstanding therapeutic performance in vivo , as demonstrated by the OA rat model. Our study is the first to validate the therapeutic effect of CO against OA in vivo , reveals a promising strategy for precision medicine pertaining to the treatment of OA and broadens the scope of CO gas therapy.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Qing Han,Xiaoxiao Sui,Gongao Jiao,Zuozhe Ding,Hao Zhang,Dongzhi Zhang
In this work, a low-temperature formaldehyde sensor based on a hydrothermally synthesized tin dioxide/tin selenide (SnO2/SnSe2) nanostructure was demonstrated. The SnO2 nanosheets were decorated on the SnSe2 nanoblocks. The microstructural characterization proves this unique morphology. At 150 °C, the SnO2/SnSe2 composite gas sensor exhibits more than three times the response to formaldehyde gas compared to pure SnO2, with a response of 13.47 to 10 ppm formaldehyde and a response recovery time of 63 s/12 s. In addition, the SnO2/SnSe2 gas sensor is capable of detecting formaldehyde gas at the ppb level. The sensor also exhibits excellent repeatability, excellent long-term performance stability, and resistance to humidity interference. The n–n heterojunction formed between SnO2 and SnSe2, along with its unique microstructure, significantly enhances the performance of the SnO2/SnSe2 sensor. The adsorption behavior of formaldehyde molecules on sensitive material surfaces was studied by using density functional theory.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jinhua Liu,Lan Guan,Zhe Li,Li Huang,Dan Li,Zhe Li,Xiaohui Wang,Yingqun Zhu,Yuanan Liu
Real-time blood gas analysis is of great significance in disease diagnosis and treatment. Here we have developed a pH, PO 2 and PCO 2 multifunctional fluorescent capillary sensing system. The pH, O 2 and CO 2 fluorescent indicators with same excitation wavelength are fixed into a single capillary tube. The sensing system possesses sensitive fluorescence response to pH, O 2 and CO 2 , and the changes of pH, O 2 and CO 2 in buffer, in vitro, and in vivo can be detected simultaneously by measuring the fluorescence signals of sensor probe. The PO 2 , PCO 2 and pH of rabbits in four disease models were assessed efficiently by the sensing system, exhibiting similar variation trend with the results by blood gas analyzer. Studies in living rabbit display the reasonable and favorable feasibility of capillary sensing system in real-time arterial blood gas analysis. Overall, the multifunctional fluorescent capillary sensing system exhibits significant potential in real-time arterial blood gas analysis and clinical application of disease diagnosis.
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Puli Hu,Hongzhi Liang,Beier Kong,Jinjiang Lv,Aori Qileng,Hongshuai Zhu,Yingju Liu
Accurate consumer perception of food packages should provide real-time feedback on any changes inside food packaging. Hence, a new multilayer gas-sensitive label (POA-12) was prepared using a layer-by-layer pouring method for simple, visual, and real-time detection of pork's freshness, while the front side was developed by immobilizing red carbon dots and fluorescein isothiocyanate in POA as indicator for volatile nitrogen, and the back side was created using bromothymol blue in POA as pH indicator. The swelling index of the multilayer gas-sensitive labels reduced from 159.19% to 148.36%, and the tensile strength increased from 25.52 MPa to 42.61 MPa. In addition, the POA-12 multilayer label showed a red-to-yellow fluorescence change as TVB-N increased from 6.84 to 31.4 and a yellow-brown-to-blue-green color change as pH increased from 5.74 to 7.24 when detecting pork samples. Thus, it provides dual-indicator monitoring that improves the accuracy and reliability of assessing the freshness of high-protein products.
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危险品化学品经营许可证（带存储）