ACS Sensors
·
2025
·
IF 9.1
Jiyuan Xue,Bingcheng Shen,Juan Wang,Juan Li,Hongran Zhao,Tong Zhang
Carbon dioxide (CO2) is ubiquitous in both natural and indoor atmospheres, playing a pivotal role in global climate regulation, air quality, and biological processes. However, their chemical inertness poses inherent challenges for developing compact, high-sensitivity detection platforms. In living organisms, CO2 often modulates protein function through reversible carbamylation of lysine residues, illustrating a finely tuned molecular recognition mechanism. Inspired by this principle, we developed a bioinspired iontronic sensor by embedding lysine moieties into a cross-linked poly(ethylene glycol) diacrylate (PEGDA) hydrogel. Upon exposure to CO2, the lysine ε-amino group forms transient carbamate adducts, inducing the electrostatic interaction, which disrupts Grotthuss-like conduction pathways and causes a distinct impedance increase. This lysine-based recognition enables high selectivity over interfering gases and operates reliably under ambient conditions. The resulting hydrogel sensor exhibits excellent linearity (R2 > 0.995) from 0 to 2000 ppm of CO2, with a theoretical detection limit of ∼76 ppm, suitable for indoor and ambient atmospheric CO2 monitoring at low concentrations. Furthermore, it maintains stable performance over at least 28 days of repeated measurements and shows negligible cross-sensitivity toward common interfering gases (e.g., H2S, CH4, and formaldehyde). By harnessing lysine–CO2 carbamylation within an ion-conducting matrix, our approach provides a versatile, low-power platform for precise CO2 sensing in applications ranging from indoor environmental evaluation to plant-level respiratory monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Hang Liu,Chanyu Yang,Jinkai Zhang,Runkang Lv,Yihao Wen,Yuhong Zhang
In this paper, a series of Eu-doped ZnSnO 3 nanoblocks are prepared through one-step hydrothermal method. The structure and morphology of Eu-ZnSnO 3 nanoblocks are characterised using SEM,XRD, XPS and TEM tests. The gas-sensitive properties of Eu-ZnSnO 3 nanoblocks towards isopropanol are explored. Compared with pure ZnSnO 3 , the response of 4 % Eu-ZnSnO 3 sensor is enhanced nearly three times. The response recovery time was greatly improved by Eu doping, and the 4 % Eu-ZnSnO 3 sensor showed a recovery time of only 8/10s for 100 ppm isopropanol at 260 °C, which is a 2.9-fold reduction in recovery time. The catalytic effect of Eu and n-n heterojunction structure of Eu 2 O 3 -ZnSnO 3 all contribute to enhance the gas response. The results prove that the Eu-ZnSnO 3 nanoblocks have great potential for the detection of isopropanol.
研究领域:
材料科学
·
纳米技术
·
气体传感
·
无机化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2020
·Vol. 32
·期 22
·1907701
·
IF 27.398
Bo Wang,Zhihua Qiao,Jiayou Xu,Jixiao Wang,Xinlei Liu,Song Zhao,Zhi Wang,Michael D. Guiver
Ultrathin unobstructed gas transport channels through the membrane selective layer are constructed in mixed matrix membranes (MMMs) by using gravity-induced interface self-assembly of poly(vinylamine) and polymer-modified MIL-101(Cr). For CO 2 /N 2 (15/85 by volume) mixed gas, the MMMs achieve a high CO 2 permeance of 823 gas permeation units and CO 2 /N 2 selectivity of 242 at 0.5 MPa. Based on economic analyses, a two-stage membrane process can achieve gas separation and economic targets.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Sha Long,Yanghang Liu,Yu Jiang,Yuting Xue,Feiyue Zhou,Dan Yu,Wei Wang
At present, inorganic photochromic hydrogels have aroused great interest among researchers and have shown great application prospects in the intelligent display field of optical information switching. However, long coloring and self-bleaching times have greatly limited their development. In this paper, the photochromic unit ammonium molybdate tetrahydrate (Mo) was embedded in a network of polyacrylamide. Pore creation via confinement of the decomposition gas from fixed sodium bicarbonate (SB) yielded a porous photochromic hydrogel. The porous hydrogel possessed macro-sized pores of 500–800 μm and exhibited rapid photoresponse and self-bleaching properties. The resulting porous hydrogel underwent a photochromic reaction after 40 s of UV light exposure. Simultaneously, the blue-green hydrogel returned to its initial color state within 1 h under natural conditions (indoors; temperature: 25 °C; light intensity: 22 W/m2). This shows that the porous hydrogels have good reversibility. Compared with other photochromic hydrogels mixed with ammonium molybdate, the prepared porous hydrogels have good advantages. The as-prepared hydrogel exhibits excellent reversible repeatability, elasticity, and stable ultraviolet light response. In summary, its good stability and outstanding reversible repeatability make it a potential material for optical information switching, ink-free printing, information encryption, and rewritable systems.
研究领域:
材料科学
·
高分子化学
·
功能材料
·
智能响应材料
·
光响应系统
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
·
IF 15.7
Zhang Chunyu,Li An-Zhen,Yuan Bo-Jun,Liu Xiang,Liu Yuanbo,Kong Kejian,Shi Qiujin,Zhang Yixuan,Luo Yiqi,Li Shengnan,Zhou Hua,Duan Haohong
H 2 S capture and valorization from polluted natural gas offer environmental and resource recovery benefits, but current approaches produce moderate-value sulfur with intensive carbon footprint. Herein, we develop an electrochemical deep oxidation method that converts H 2 S from polluted natural gas into value-added K 2 SO 4 using in-situ cathodically generated H 2 O 2 . We first validate this concept using commercial H 2 O 2 and then in-situ generated H 2 O 2 in H-cell, revealing the importance of high H 2 O 2 concentration for deep H 2 S oxidation, especially sluggish S 2 O 3 2− -to-SO 3 2− conversion. We then showcase its application potential in 4-cm 2 and then 100-cm 2 flow reactor with high interfacial H 2 O 2 concentration and large current, with the latter achieving H 2 S removal (100,000 ppm to <15 ppm), >70% K 2 SO 4 selectivity, and 100-h stable operation. Life-cycle assessment and techno-economic analysis confirm the strategy’s sustainability advantages and economic viability. We finally extend this method to produce a 1.4 wt% H 2 SO 4 solution by modifying the flow reactor with a solid-electrolyte type.
研究领域:
环境工程
·
电化学
·
化学工程
·
能源技术
·
可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhuanghu Xu,Guohong Liu,Lianbo Jiang,Jian Li,Weihui Wu,Yanhua Xiao,Yongling Shen,Danping Li,Yuru Xu
Mustard gas is favored by terrorists due to its simple production process, ease of deployment, low cost, and severe destructive effects on human health. In terrorist attacks, the use of mustard gas can cause large casualties and seriously threaten public safety. In recent years, colorimetric detection technology has its unique advantages in the detection of toxic and harmful substances. Herein, gold nanoparticles (AuNPs) with 4 distinct nano-sizes are synthesized using gold (Ⅲ) chloride hydrate (HAuCl 4 ·xH 2 O) as the raw material, and either ascorbic acid or sodium citrate as the reducing agent, thereby constructing a 4 × 4 colorimetric sensor array. The preparation process is simple, the size of the nanoparticles is controllable, and the response to mustard gas is sensitive. The experimental results show that the detection linear range of the colorimetric sensor array is 5–100 mg·L −1 , and the limit of detection (LOD) is 4.13 mg·L −1 . Meanwhile, mustard gas in real samples are tested. The sample recovery rates are between 91.42 % and 122.1 %, and the relative standard deviation values (RSD) are between 0.21 % and 6.37 %. It suggests that the proposed colorimetric sensor array has a potential application on the detection of mustard gas in real samples.
研究领域:
分析化学
·
纳米技术
·
化学传感
·
安全与防御
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
CHIRALITY
·
2025
·Vol. 37
·期 8
·e70049
·
IF 3
Jia Huang,Yizhuo Ma,Maria Abbasi,Junzhe Qin,Mingxuan Li,Zi Yang,Xuran Sun,Wei Wang,Zhen Wang,Fang Liu,Luo Aiqin,Lina Geng
As enantiomers can have different pharmacological and toxicological impacts even though they have the analogous chemical composition, efficient chiral separation is crucial. Chromatography is one of the primary methods for separating enantiomers, and the key to chromatographic separation lies in the chiral stationary phase (CSP). Chiral porous materials have emerged as innovative chiral stationary phases and garnered extensive attention. Zr based MOF materials, have been regarded as one of the most stable metal–organic framework (MOF) materials. In this paper, after grafting with L-proline, UiO-66 was used for the first time for chiral gas chromatography separation. The newly developed CSP provided high resolution for xylenes within only 2–3 min. For substances like linalool, α-pinene, and xylenes, the UiO-66-NH 2 -L-Pro–coated capillary column acquired bas3ic resolution and showed outstanding enantiomeric and positional isomer isolation. Comprehensive characterizations, including SEM, XRD, FT-IR, TGA, N 2 adsorption–desorption isotherms, CD spectra, and XPS, were conducted to analyze the material stucture and chiral recognition mechanism. The chiral separation relies on transient diastereomeric complexes formed between L-proline and enantiomers, stabilized by hydrogen bonding, intermolecular forces, and steric constraints within UiO-66's micropores. These interactions enforce enantioselective discrimination via the pore's stereochemical filtering, enabling chiral resolution. This study is expected to provide significant value for both chromatographic chiral separation and large-scale chiral substance separation.
研究领域:
分析化学
·
色谱学
·
材料科学
·
分离科学
·
有机化学
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Liting Pan,Shijie Yu,Zemin Chen,Yina Jiang,Yunmao Zhang,Jing Liu,Xu Hou
Liquid gates, which combine the characteristics of both solid and liquid materials, possess unique advantages of reconfigurable interfaces, dynamic responsiveness, and adaptability, demonstrating great promise for various practical applications. Currently, a major challenge for liquid gates is the observation of their switching behavior in real-time and in situ, which directly limits the applicability across various scenarios. Here, a magneto-responsive photonic liquid gate is developed to enable instantaneous, in situ monitoring of gas transport switching threshold through dynamic structural color changes. By leveraging particle reconfiguration within confined magnetic colloidal suspensions, both the interfacial mechanical properties and diffracted light are simultaneously tuned by the magnetic field, creating a direct correspondence between the gas transport switching thresholds and the observable color state of liquid gates. This visual system features responsive changes in both appearance and functionality, enabling real-time modulation of gas release to be perceived with the naked eye. Furthermore, this material strategy, characterized by direct recognition, rapid predictability, and straightforward manipulation, opens new opportunities for visual chemical detection, dynamic fluid control, and multifunctional integrated systems.
研究领域:
材料科学
·
化学工程
·
光学
·
流体力学
·
智能材料
·
传感器与检测技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Tianrun Zheng,Yi Lu,Yilin Wang,Hong Zhou,Kang Yang,Mingxue Zhang,Yueying Liu,Fengmin Liu,Geyu Lu
Loading noble metals is an effective way of enhancing the gas-sensing performance of metal oxide semiconductor (MOS) materials. Although the catalytic sites of noble metals can promote the sensing reaction of gas molecules, the mechanism of how noble metals influence the MOS resistance remains unclear. Herein, SnO2 was combined with Pd metallene to construct a nanocomposite as a model material for investigating the gas-sensing mechanism at the interface between oxides and noble metals. Due to the large lateral scale, unique electron transfer capabilities and excellent catalytic properties, Pd metallene was used as a substitute for noble metal particles. Characterization and theoretical analysis revealed the strong metal–support interactions (SMSI) between Pd metallene and SnO2. Density functional theory (DFT) calculations and experimental results indicated that Pd metallene exhibits high adsorption and electron transfer capabilities for the ethanol molecule. SMSI played a crucial role in the electron transfer at the Pd metallene–SnO2 interface during the gas-sensing reaction, thereby promoting changes in the resistance of SnO2. This work demonstrates the potential of Pd metallene and provides new insights into the gas-sensing reaction of MOS loaded with noble metals.
研究领域:
材料科学
·
气体传感器
·
纳米材料
·
表面化学
·
半导体物理
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 10
·期 4
·2105-2112
·
IF 12.732
Tian Hou,Meng Zhang,Wenjing Yu,Xin Wang,Zhengying Gu,Qian Chen,Lan Lan,Xiaoran Sun,Yuelong Huang,Bolin Zheng,Xu Liu,Martin A. Green,Xiaojing Hao
Gas-quenching is a promising technique for the up-scalable fabrication of metal halide perovskite solar cells (PSCs). However, it has been challenging to produce high-quality gas-quenched perovskite films without the use of the methylammonium (MA) cation. By employing tetramethylene sulfoxide (TMSO) as a ligand in the precursor solution, high-quality FA0.9Cs0.1PbI3 perovskite films have been successfully obtained by gas-quenching. A study on the precursor solution and film-forming process revealed the effect of TMSO on the formation of large-grain films, as well as the critical role of gas-quenching in regulating the intermediate films. The absolute MA-free perovskite device exhibits superior stability over the PSCs obtained with the MACl additive. The fabricated MA- and Br-free PSCs show a power conversion efficiency of 21.3% without any passivation treatment. Moreover, gas-quenching with TMSO enables a wide gas pressure processing window and superior accessibility to low-pressure processing, demonstrating its promising potential in up-scaling manufacturing of high-efficiency MA-free PSCs.
研究领域:
材料科学
·
太阳能技术
·
化学工程
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2022
·
IF 4.778
Tong Zhang,Wen Li,Yanting Shi,Chengpeng Li
Air pollution poses a serious threat to public health, and gas sensors for detection of the pollution has gained great attention over the past decades. In this work, a novel idea based on the substrate material integrated by structure and function was built to prepare NH 3 sensor with an improving sensing properties. Hybrid organic–inorganic sol gel with methacryloxy and epoxy groups was first synthesized. A hybrid organic–inorganic substrate was then prepared based on continuous condensation , radical polymerization and anionic polymerization . The thermal stability and microstructural of the hybrid substrate were studied and the results indicated that the hybrid has excellent thermal and structural stability . Then, polyaniline (PANI) was directly loaded on the hybrid substrate due to hydrogen bonding though a facile in-situ polymerization method to fabricate a PANI/hybrid nanocomposite for NH 3 sensing. The hydroxyl groups generated from the epoxide ring-open reaction and silane hydrolysis condensation contribute to improve the sensing properties. This sensor showed superior selectivity and reproducibility to 50 ppm NH 3 at room temperature. The low detection limit towards NH 3 at room temperature can reach 1 ppm. This strategy may provide a promising and straightforward method in gas sensing electronics at room temperature.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Lei Wu,Yiqiang Deng,Dayi Guo,Guoshuai Zhang,Tanlai Yu,Xiuling Chen,Nanwen Li
Carbon molecular sieve (CMS) membranes represent a class of high-performance separation materials capable of surpassing the conventional permeability-selectivity trade-off. Introducing fillers into polymer precursors can further enhance the performance of the resulting CMS membranes; however, incompatibility between fillers and the polymer matrix often results in interfacial defects. In this study, the small-molecule cross-linker N,N ′-1,3-phenylenedimaleimide (PDM) was incorporated into a 6FDA-BPDA/TFDB polyimide to prepare optically transparent, uniform, and defect-free PDM-x precursor membranes. These precursor membranes were first subjected to thermal treatment at 300 °C for 1 h to form a semi-interpenetrating polymer network (SIPN) structure, and then pyrolyzed at 550 °C to obtain PDM-x-SIPN CMS membranes. The successful formation of a cross-linked semi-interpenetrating polymer network (SIPN) in the precursor was verified by TGA, ATR-FTIR, and XRD analyses. The resulting PDM-20-SIPN CMS membrane delivered exceptional gas-separation performance, with O 2 and CO 2 permeabilities of 1631 and 9904 Barrer, and O 2 /N 2 and CO 2 /CH 4 selectivities of 6.7 and 67.8, respectively—exceeding the latest upper-bound limits. Furthermore, the membrane showcased outstanding aging resistance over 720 h, significantly outperforming the conventional 6FDA-BPDA/TFDB CMS membrane. This study not only offers a robust precursor-design strategy, but also provides a foundation for the future development of high-performance CMS materials in sustainable separation processes.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）