SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Jun Wang,Kun Zhao,Xiaotong Wang,Zhihao Qu,Sen Tao,Xiankai Li,Weiliang Tian,Kewei Zhang
Tungsten oxide (WO 3 )-based metal oxide semiconductor (MOS) sensors are premier candidates for ammonia (NH 3 ) detection due to their low cost and superior chemical stability. While transition-metal doping effectively modulates sensing performance, identifying the optimal dopant from the vast compositional space remains a trial-and-error bottleneck. Herein, we propose a machine learning (ML)-guided strategy for the rational discovery of high-performance dopants for WO 3 sensors. By leveraging a Random Forest (RF) classifier trained on a rigorously curated dataset, we achieved a high dopant-screening accuracy of 95.8%, identifying titanium (Ti) as the most promising dopant for improving NH 3 response. Guided by the ML predictions, the optimized 3 wt% Ti-doped WO 3 (Ti-WO 3 ) sensor exhibited a response of 16 toward 40 ppm NH 3 at 170 °C, which is approximately 6 times higher than that of pristine WO 3 . Furthermore, the Ti-doped sensor showed markedly accelerated response dynamics, reducing response/recovery time from 170 s / 103 s to 112 s / 45 s, respectively. Moreover, the 3 wt% Ti-WO 3 sensor demonstrated excellent repeatability, high selectivity against interfering gases, and outstanding long-term stability. This work establishes a robust ML-assisted framework for the rational design of advanced gas-sensing materials and offers an efficient route for accelerating the development of high-performance MOS gas sensors.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaochao Xu,Xiangxia Wu,Zhen Xiao,Zhi-Ang Zhao,Guanwei Peng,Jinni Shen,Lifang Yang,Wenxin Dai,Zizhong Zhang
The selective photooxidation of CH 4 into value-added chemical products under ambient conditions offers a viable pathway for the rational utilization of natural gas resources. However, the direct oxidation of methane to synthesize oxygenates still faces significant challenges due to insufficient chemo-selectivity in active intermediate radical formation and consecutive side reactions of primary products. Rather than introducing multiple metal species to create active sites, we show that controlled defect generation on the substrate offers an effective pathway for catalytic enhancement. Here we developed a ZnO aerogel-supported ruthenium single atom photocatalyst for selective conversion of CH 4 to CH 3 OH. Under ambient conditions, 1Ru/ZnO achieved a methanol production rate of 407 μmol g −1 h −1 with a high selectivity of 91.7%. The observed activity enhancement is principally attributable to two factors: (i) the ZnO aerogel microspheres with abundant dual-defect structures serve as an effective substrate material, offering abundant active sites to facilitate the CH 4 activation process; and (ii) monatomic Ru 4+ sites were employed as efficient active sites for methane adsorption and dehydrogenation; meanwhile the separation of redox sites was optimized to effectively suppress over-oxidation. The integration of aerogels (with abundant defect sites) and supported metal species offers a novel strategy for achieving direct CH 4 oxidation to CH 3 OH.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Bin Tan,Xin Li,Huijie Lu,Lizhong Zhu
During hydraulic fracturing in shale gas extraction, substantial volumes of flowback and produced water (FPW) containing inorganic salts, heavy metals, and chemical additives are generated. Current FPW treatment technologies are limited by high operating costs, high carbon footprint, as well as difficulties in mixed salt disposal. This study established a green and low-carbon FPW treatment system at full scale, integrating high-density sedimentation, dissolved air flotation, chemical precipitation, sand filtration, nanofiltration, reverse osmosis, all membrane brine concentration (AMBC), mechanical vapor recompression, and chemically modified zeolite adsorption. To the first time in FPW treatment, the innovative, energy-saving AMBC unit based on the osmotic assisted reverse osmosis (OARO) was employed, which reduced the volume of brine entering the mechanical vapor recompression (MVR) unit by 40%, electricity consumption by 48.53% and carbon emission by 55.36%. Effective cleaning strategies were developed for killing the dominant fouling bacteria Myroides on nanofiltration membrane. Efficient recovery of industrial-grade sodium chloride further reduced the net cost to as low as 8.07 USD·m −3 , with effluent quality consistently meeting the stringent discharge standards and overall toxicity reduced by 98%.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121787
·
IF 7.5
Chuanxi Li,Shengxi Chen,Bing Gao,Yueheng Niu,Bo Ran,Yibo Han,Zhaofeng Wu,Ning Tian,Qun Jing
The development of high-performance gas sensors using sustainable materials is of significant importance for environmental monitoring. This work reports a one-pot zinc acetate-assisted pyrolysis and carbonization method to prepare dandelion crown hair fiber-derived carbon microtubes (DFCMT) and their zinc oxide heterojunction composites (ZnO/DFCMT) from dandelion crown hair fibers (DCHF). The unique hollow structure of the DFCMT serves as an excellent scaffold, facilitating the mass transfer of gas molecules. More importantly, the adopted strategy simultaneously achieves carbonization and the in-situ formation of uniformly dispersed ZnO nanoparticles, effectively preventing agglomeration and creating abundant heterointerfaces. When evaluated as gas sensors, the optimized ZnO/DFCMT heterojunction exhibited remarkable enhancement in sensing performance towards four target gases, including ethylene glycol, showing 5.0–13.6 fold and 3.4–16.9 fold higher response compared to the pristine DFCMT and pure ZnO, respectively. Notably, the sensor demonstrated an ultra-low detection limit of 0.027 ppm for ethylene glycol, high sensitivity, and excellent long-term stability over 30 days. The significantly improved performance is primarily attributed to the synergistic effects of the hierarchical hollow structure and the formed heterojunctions, which promote gas adsorption and electron transfer. This work provides a sustainable and efficient strategy for designing advanced heterostructure materials for high-performance environmental sensing applications.
✓ 已验证
产品关联
DOI
高影响因子
PETROLEUM SCIENCE AND TECHNOLOGY
·
2026
·
IF 1.3
Xinye Feng,Hu Jia,Wei He,Chenyu Wu,Gang Wang,Chengcheng Niu
The reservoir damage caused by wellbore fluid loss – such as permeability reduction and water lock – hinders effective EOR implementation and leads to reservoir contamination. This issue is especially critical in high-temperature and high-pressure (HTHP) reservoirs, where conventional colloidal temporary plugging fluids often fail due to low density, poor thermal stability, and severe salting-out–induced damage. In this work, we develop a solid-free, zwitterion-modified carboxymethyl cellulose (CMC) colloidal particle system (CAA) that addresses these limitations. The system combines formate-assisted density enhancement (maximum density of 1.55 g/cm³) with a thermally stable, salt-shielded polymeric network. Unlike previously reported starch- or PAM-based systems, which are limited to temperatures below 140 °C and densities ≤1.3 g/cm³, the CAA system remains stable at 160 °C, pressures above 25 MPa, and under high-salinity conditions. Microstructural evidence further confirms swelling-induced pore filling. Pressure-bearing and flowback experiments demonstrate that the CAA system withstands reservoir pressures exceeding 25 MPa and achieves core permeability recovery of up to 92.1%, outperforming previously reported colloidal plugging systems. This study presents a new design strategy for solid-free, high-density plugging fluids and provides both mechanistic insights and experimental validation. The results support their effective application in extreme HPHT well operations, improving reservoir protection and enabling safer field implementation.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Mingzhi Jiao,Liangsong Duan,Jiade Zhang,Wei Peng,Chenyu Wen
To address the demands for efficient detection of combustible gas, such as hydrogen (H2), ethylene (C2H4), and acetylene (C2H2), in complex gas environments relevant to environmental monitoring, industrial safety, and smart homes, we developed zinc oxide (ZnO) gas sensors featuring bimetallic surface decoration with palladium (Pd) and gold (Au). Electron microscopy reveals the surface morphology of the sensing film and Pd/Au codecoration conformation, while X-ray photoelectron spectroscopy supports that codecoration modulates the distribution of surface oxygen species on ZnO. Gas sensing measurements demonstrate that Pd/Au decoration enhances both sensitivity and selectivity toward H2, C2H4, and C2H2. Specifically, a sensor decorated with 0.6 nm Pd and 2.3 nm Au exhibits a 178-fold increase in response to 160 ppm H2. Furthermore, by combining particle swarm optimization algorithm for feature selection with a support vector machine classifier, a recognition accuracy of 96.07% is achieved across seven different pure and mixture gas samples. This study presents a high-accuracy ZnO-based gas sensing platform optimized through both material engineering and machine learning algorithm, providing a reliable solution for real-world applications in industrial safety and environmental monitoring.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Xiao-Lin Wang,Qian-Hao Chen,Qi-Hui Ye,Hao Ye,Yu-Ting Zhao,Jing Yang,Yucong Yu,Ming-Bang Wu,Juming Yao
Fully aromatic fluorinated polyamide nanofiltration membranes are manifesting the great potential in organic solvent nanofiltration (OSN) especially for their excellent structural stability when exposed to solvents and enhanced nonpolar organic solvent permeance compared with the conventional polyamide membranes. However, the fluorinated amino monomers are difficult to be dissolved in water that impedes the large-scale manufacture of fluorinated polyamide selective layers via the typical interfacial polymerization at the water-alkane interfaces. Herein, we report a straightforward and effective strategy for fabricating aromatic fluorinated polyamide nanofiltration membranes at gas/liquid interfaces while hydrophobic 2,2-bis(4-aminophenyl)hexafluoropropane gases and trimesoyl chloride solutions are selected as the gas and liquid phases, respectively. The obtained membranes show outstanding hydrophobicity with water contact angles of 92°, which is beneficial for the nonpolar organic solvent permeance. The molecular dynamics simulations could also prove that the fluorine-containing groups exhibit much lower absolute interaction energies with the nonpolar solvents compared with those of polar ones. Therefore, our membranes demonstrate an extremely high n-hexane permeance of 21.52 L m −2 h −1 ·bar −1 while maintaining a low MWCO of approximately 452 Da. Moreover, the high fluorine contents endow the membranes with good stability resulting in almost unchanged rejection and permeance during long-term operation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Xuyang Duan,Hao Zhang,Chengyu Zhang,Liang Zhu,Guangbin Li,Zhaogang Zhang,Peng Zhou,Dongzhi Zhang
A Pd-ZnO@ZIF-8 heterostructured benzene gas-sensitive material was prepared. • The benzene sensor has a low detection limit, rapid detection and high stability. • Vision-olfactory robots have achieved intelligent inspection of leakage risks. Benzene (C 6 H 6 ) is a volatile organic compound with strong carcinogenicity, and achieving its rapid and sensitive detection is of great significance for environmental protection and the prevention and control of public health risks. In this study, a ternary heterostructure gas-sensing material composed of Pd-modified ZnO@ZIF-8 was proposed. The pre-concentration effect of ZIF-8, the catalytic sensitization of Pd nanoparticles, and the construction of the Schottky barrier at the Pd/ZIF-8 interface collectively endow the sensor with excellent detection performance. This sensor exhibits extremely high sensitivity at 375℃, with a rapid detection speed (response/recovery time of 2 s/2 s) and an extremely low detection limit (capable of reaching the ppb level). Meanwhile, based on this sensor, a pipeline condition monitoring platform was developed. On the mobile end, online monitoring of benzene leakage and graded early warning were realized. Furthermore, this detection system is integrated with robots. Through a combined olfactory and visual detection method, it enables intelligent inspection of the risks of gaseous and liquid benzene leakage. Therefore, the proposed Pd-ZnO@ZIF-8 sensor and its integrated monitoring platform offer a reliable and efficient solution for real-time benzene leakage detection, holding great promise for enhancing industrial safety and public health protection. Download: Download high-res image (236KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Dongmin An,Zihao Yu,Wansheng Tang,Hengbin Cao,Mengying Long
In₂O₃ microstructure and surface chemistry was regulated by solvothermal temperature. • 160 °C-In₂O₃-based sensor exhibited a high TEA response of 123.58 at 170 °C. • Abundant chemisorbed oxygen endowed In₂O₃ with superior TEA-sensing ability. • DFT calculations confirmed that oxygen vacancies strengthen the adsorption of TEA on In₂O₃. In this work, a series of In₂O₃ nanomaterials were synthesized via a solvothermal method at 120, 130, 160, and 190°C, and the effects of solvothermal temperature on their crystal structure, surface properties, and triethylamine (TEA) gas-sensing performance were comprehensively investigated. The results showed that the In₂O₃ sample obtained at 160°C delivered the maximum response (123.58) to 50 ppm TEA at the optimal operating temperature of 170°C, together with superior selectivity and long-term stability. Structural characterization revealed that the solvothermal temperature significantly influenced the grain size, surface morphology, and surface adsorbed oxygen content of the samples. Compared with the other samples, the 160 °C-In₂O₃ sample possessed an moderate grain size, a relatively uniform mesoporous structure, and a higher concentration of chemisorbed oxygen species, which facilitated gas diffusion and surface reaction processes. Furthermore, density functional theory (DFT) simulations indicated that oxygen vacancies could enhance the adsorption capability of TEA molecules, thereby promoting the gas-sensing reaction. These findings demonstrated that an appropriate solvothermal temperature could effectively regulate the surface structure and gas adsorption characteristics of In₂O₃, providing valuable guidance for the design of high-performance TEA gas-sensing materials. Download: Download high-res image (97KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yuanyin Wang,Chang Guo,Daoyi Chen,Kai Liu,Lixun Zhang,Yuntao Guan,Mucong Zi
Condensate gas, a key constituent of global natural gas reserves, plays an indispensable role in energy security and carbon neutrality, while its pipeline transport is threatened by gas hydrates formation. However, impact of oil phase on gas hydrates formation and kinetic hydrate inhibitor (KHI) application remains insufficiently explored. This study systematically evaluates the influence of oil phase large guest molecule substances (LGMS) such as cyclohexane and methylcyclopentane, on gas hydrates formation and kinetic inhibition by representative KHIs. The conventional pressure-based kinetic analysis method was proved insufficient in systems involving LGMS. Therefore, a multi-method approach was employed, combining routine gas consumption calculations, thermodynamic analysis, rheological tests for nucleation detection, Raman spectroscopy to reveal hydrate structure composition variation, and controlled dissociation to separate the mixed hydrates. Using this novel approach, results demonstrated that (i) LGMS altered gas hydrate phase equilibria, increasing formation driving force and accelerating hydrate nucleation. (ii) sI-sII or sI-sH mixed hydrates were observed in LGMS systems. In cyclohexane systems, the proportion of sII hydrates initially decreased and then increased, whereas in methylcyclopentane systems, the proportion of sH hydrates steadily increased throughout the formation process. (iii) LGMS promoted hydrates formation in water systems and reduced the inhibition efficiency of KHI. The effect of cyclohexane was particularly pronounced, while Inhibex 501 showed minimal sensitivity to the presence of LGMS. This study provides new insights into the kinetics of gas hydrate formation and inhibition in gas-liquid guest systems, contributing to improved KHI application strategies for gas hydrate control.
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.2
Yingdian Li,Pengfei Dai,Shui Hu,Stephen Jerrams,Long Zheng,Shipeng Wen
Isobutylene-isoprene rubber (IIR) is widely used in medical seals and inner tubes due to its remarkable gas barrier properties. However, the absence of polar groups and limited interfacial affinity toward inorganic fillers limit further improvement in its gas barrier performance. Herein, IIR was epoxidized using m-chloroperoxybenzoic acid to obtain epoxidized IIR (EIIR). Graphene oxide (GO) was modified using γ-aminopropyltriethoxysilane and sodium polystyrene sulfonate (PSS) to yield functionalized GO (PSS-mGO). The PSS-mGO was further incorporated into EIIR via solution blending, and the resulting PSS-mGO/EIIR compound was blended with IIR to obtain PSS-mGO/EIIR/IIR composites. The inclusion of EIIR into the IIR matrix introduced epoxy-functionalized segments into the composite, thereby enhancing intermolecular interactions and restricting segmental relaxation. Consequently, the nitrogen permeability of the EIIR/IIR composites decreased by 42.1% relative to that of the IIR composite at an EIIR/IIR mass ratio of 1:9. Further incorporation of PSS-mGO improved filler dispersion and formed a well-developed filler network. A more tortuous diffusion pathway for gas molecules was created, reducing nitrogen permeability by up to 52.2% relative to that of the IIR composite. The results demonstrate that combining EIIR and functionalized GO is an effective strategy for improving the gas barrier performance of IIR composites.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yihui Wang,Ting Yu,Huijun Yin,Shangyi Shen,Zhenqi Yang,Bohui Wang,Xingjie Wu,Honglong Chang,Haitao Zhao
Nitrogen dioxide (NO 2 ), a significant atmospheric pollutant primarily emitted from combustion processes, poses substantial environmental and health risks, underscoring the critical need for accurate detection methods. Conventional SnO 2 -based sensors are typically constrained by high operating temperatures and limited sensitivity. This study overcomes these limitations by introducing a novel approach that combines noble metal modification with bandgap-matched light excitation, enabling high-performance NO 2 detection at room temperature. Au/SnO 2 composites with hierarchical nanosheet architectures were synthesized via hydrothermal and impregnation methods, as confirmed by SEM. Their sensing properties were systematically investigated under blue light excitation. Among the samples tested, the 2.5 wt% Au/SnO 2 sensor demonstrated superior performance, exhibiting a remarkable response (149.25 @ 5 ppm), a low detection limit (150 ppb), and excellent selectivity, long-term stability, and humidity tolerance at room temperature. First-principles calculations reveal that the enhanced sensor performance originates from a synergistic effect between Au nanoparticle decoration, which enhances NO 2 adsorption and charge transfer, and the additional photogenerated carriers induced by blue light excitation. This study provides novel material design insights for developing high efficiency room temperature NO 2 sensors.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）