SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Bang Lin,Bolang Cheng,Yong Zhang
Textile-based wearable gas sensor technologies have attracted significant attention due to their large surface area, internal gas adsorption capability, and integrability . However, the rough and porous nature of textiles often leads to non-uniform material deposition, limiting sensor performance. Here, we propose a universal modification method using hydrophobic SiO 2 nanoparticles to reduce the capillary effect in textiles, enabling precise inkjet printing of electrodes and sensing materials. By minimizing the capillary effect, a wearable CO sensor with a highly uniform CuO nanosheets sensing layer and precise Ag interdigitated electrodes is fabricated. At room temperature, the sensor exhibits a response of 76.2 % to 10 ppm CO, with a detection limit as low as 200 ppb (14.42 % response). In conditions of high humidity (98 % RH) and significant bending (120° for 5000 cycles), the sensor still exhibits high sensitivity to 10 ppm CO. This work presents a universal method for minimizing the capillary effect in textiles, offering new possibilities for developing flexible electronics and wearable gas sensors.
✓ 已验证
产品关联
DOI
高影响因子
Results in Engineering
·
2025
·
IF 7.9
Nuo Xu,Shuai-Xia Yuan,Yixin Liu,Zong-Yu Guo,Minghua Li,Duan-Chao Wang
Odors from sweat and skin secretions not only cause discomfort but may also signal microbial contamination in textiles, posing health risks. To address this, we report a multifunctional composite textile prepared via in-situ growth of two zeolitic imidazolate frameworks (ZIF-67 and ZIF-8) on cotton fabrics. Cotton was chosen for its comfort, hydrophilicity, and modifiable cellulose structure, with woven and knitted variants offering complementary mechanical and elastic properties. The integration of ZIFs imparts high surface area, tunable microporosity, and intrinsic antibacterial performance. Structural characterization confirms uniform deposition of ZIFs forming a functional shell on the cotton fibers. Notably, X-ray micro-computed tomography (Micro-CT) and BET analysis jointly reveal a hierarchical porous architecture from the textile macrostructure to ZIF microdomains, enabling efficient adsorption of both alkaline (NH 3 ) and acidic (CH 3 COOH) odor molecules. The ZIFs exhibit a surface area of 1451.0 m 2 /g, retaining 89.2 m 2 /g post-integration. The resulting fabrics demonstrate >90 % odor removal, excellent water absorbency and breathability, and 99.9 % antibacterial activity against S. aureus and E. coli. This study offers a promising strategy for designing next-generation functional deodorizing textiles for daily hygiene applications.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Chenbing Xi,Minyi Luo,Yong Zhang,Zhengyi Chen
Sample pretreatment is an indispensable part of the analysis of complex biological matrices to ensure the accuracy and reliability of analytical results, but it is rather difficult to develop a miniaturized and portable strategy to minimize matrix interference. In light of the difficulties resulted by interference from biological matrices and the short half-life of some constituents, this work introduces a combination of an adjuvant tracer with a high-efficiency and portable sample pretreatment device, the portable steam penetration gas membrane separation (PSPGMS) device, achieving analysis of complex biological samples under the interference of matrices. In this work, methanol was utilized as adjuvant to capture free ONOO– in living cells under UV irradiation for its low background signal and eco-friendliness; the PSPGMS device conducted all-in-one separation, absorption, and derivatization for the detection of formaldehyde generated by the oxidization between methanol and the products of ONOO– photolysis, achieving a linear response (R2 = 0.9919) across 2.0–20.0 μmol/L and a recovery rate of 87.4–115.0% in the analysis of rat hepatocytes. With a detection limit of 0.5 μmol/L, excellent portability, and integration, this strategy is well-suited for on-site rapid and visualized detection, independent of bulky and expensive instruments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Jintang Wang,Qi Wang,Bo Liao,Zhe Sun,Yujing Bai,Ke Zhao,Qian Zheng,Juyuan Zhang,Kaihe Lv,Jinsheng Sun
Natural gas remains one of the most critical energy sources worldwide. In deepwater gas hydrate formations, the use of hydrate inhibitors is essential during drilling operations to suppress secondary hydrate formation, maintain wellbore stability, and ensure uninterrupted fluid transport. However, the evolving challenges of drilling in shallow reservoirs under deepwater conditions have exposed the limitations of conventional hydrate drilling fluid systems, which are increasingly inadequate due to the suboptimal performance of traditional hydrate inhibitors. In this study, the commercial kinetic hydrate inhibitor poly(N-vinylcaprolactam) was modified via three approaches incorporating various alkyl groups, and the structures of the modified polymers were characterized using 1H NMR spectroscopy and FTIR spectroscopy. The performance was evaluated in 1 wt % inhibitor solutions prepared with deionized water, with pure deionized water as the control. Among the tested agents, P(NVCL-co-DMAA) exhibited the highest inhibition efficiency. It extended the hydrate formation time from 168 to 321 min and extended the hydrate formation temperature from 10.0 to 2.47 °C at a concentration of 1 wt %. Furthermore, molecular dynamics simulations were conducted to elucidate the inhibition mechanisms of the modified inhibitors. Radial distribution function analysis of methane molecules revealed that incorporating alkyl groups enhanced both the intensity and position of the distribution peaks between methane molecules. Notably, the inclusion of N,N-dimethylacrylamide allowed the modified inhibitor to outperform the conventional poly(N-vinylcaprolactam), reducing the adsorption energy between inhibitors and methane hydrate by 53.11%. Thus, the proposed alkyl modification method enhances the adsorption capacity on the surface of the hydrate. These findings offer valuable insights for designing more effective and efficient hydrate-formation inhibitors.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Huasheng Wang,Shuang Deng,Hongyun Hu,Can Fang,Guangqian Luo,Ze Wang,Songgeng Li
Excessive ClO 2 tends to be produced and escape, causing secondary pollution when wet oxidation of NO with NaClO 2 is conducted under acidic conditions. NaClO 2 alkaline oxidation has accordingly received a wide attention. In this work, NaClO 2 alkaline oxidation of NO has been systematically studied in a self-built spray tower. Focus has been placed on the effects of acidic components contained in flue gas such as CO 2 , HCl and SO 2 . ClO 2 and HClO 2 are considered more effective for NO oxidation, which tend to be produced in an acidic environment. HCO 3 − has a relatively higher hydrolysis coefficient than ClO 2 − , leading to more HClO 2 formation. Similarity is found with HCl although the effect is not as significant as CO 2 due to its low concentration in flue gas. SO 2 exhibits a negative effect on NO removal since HClO 2 can be consumed by SO 2 . Nearly 100 % NO removal efficiency can be achieved although there is an initial time delay necessary for the neutralization of alkaline environment. A similar performance has been observed for HCl. On the contrary, SO 2 exhibits a negative effect on NO removal due to the competition with NO in the consumption of NaClO 2 . Additives such as NaClO and CTAC were also used to enhance NaClO 2 alkaline oxidation performance. Interesting to note that CTAC can nearly eliminate the time delay by intensifying the gas-liquid mass transfer.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Geoenergy Science and Engineering
·
2025
·
IF 4.6
Chenwei Zou,Yifei Liu,Caili Dai,Xiaoman Yuan,Huailong Wang,Yongping Huang,Zhongzheng Xu,Ning Yang
Gas flooding is crucial for enhanced oil recovery (EOR) in carbonate fractured-cavity reservoirs, but severe gas channeling reduces displacement efficiency. While foams can mitigate channeling via the Jamin effect, conventional and gel-strengthened foams often suffer from poor stability under high temperature, high salinity, and formation water dilution. This study presents a salt-induced dual network gel-strengthened foam (SDG-Foam) with improved gas-blocking performance and long-term stability. The SDG-Foam comprises a Ca 2+ -induced ion crosslinked network and a high temperature-initiated covalent crosslinked network. The optimized formulation includes sodium alginate (0.5–0.7 wt%), acrylamide (6.0 wt%), crosslinking agent (0.3 wt%), and initiator (0.004–0.006 wt%). Sodium alginate reacts with Ca 2+ in the formation brine to form the first crosslinked network, which can protect foam and gelant solution from being diluted by formation water. At high reservoir temperature, the monomer, crosslinking agent, and initiator eventually gelled, generating a second crosslinked network that prevented foam rupture and greatly increased foam stability. The half-life of SDG-Foam exceeded 18 days under high-temperature (130 °C) and salinity (220,000 mg/L) conditions. The fracture-cavity carbonate plate displacement experiment showed that the SDG-Foam achieved a strong gas channeling plugging, expanded the gas-swept volume, and improved the oil recovery by 11.5%. Visualization tests further revealed that SDG-Foam preferentially migrates to high-permeability channels, effectively sealing gas pathways and improving oil displacement efficiency.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Weili Ye,Jin Li
Formaldehyde vapor (CH 2 O) is a well-known hazardous gas. Long-term exposure to high concentrations of CH 2 O can cause chronic respiratory diseases in humans and increase the risk of cancers such as leukemia and nasopharyngeal cancer. Zeolite imidazolic frame-67 (ZIF-67) has a high specific surface area and porosity; therefore, it can be used to prepare gas-sensitive materials. In this study, rod-flower-like ZnO was obtained by activation of the rod ZnO using 2-methylimidazole. The ZIF-67-coated rod-flower-like ZnO was then used to synthesize ZnO@ZIF-67 (ZZ67). Experimental and theoretical analyses showed that the ZIF-67 on the ZZ67 surface provided abundant active sites for pure ZnO, which helped to capture target gas molecules more quickly in the experimental atmosphere and realize susceptible detection. Moreover, ZZ67 had a high response (1210) to 500 ppm of CH 2 O at room temperature (~25 ℃), which was 4.8 times the response of activated ZnO (251). Furthermore, owing to the high hydrophobicity of ZIF-67, ZZ67 was mainly unaffected by humidity. Overall, ZZ67 exhibited good selectivity, a high response to CH 2 O, and low sensitivity to high relative humidity.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·
IF 1.8
Jixue Zhao,Yun Liu,Yuanhang Zheng,Xiaolei Li,Tianyi Sui,Bin Lin
In this paper, high thermal conductivity Si 3 N 4 ceramics were successfully fabricated through exploring and optimizing the tape casting process. The impact of various organic additives on the rheological characteristics of Si 3 N 4 slurry was explored, and the pore size distribution and microstructure of the green tapes at different solid loadings were investigated, as well as the microstructure of Si 3 N 4 ceramics. Green tapes with a narrow pore size distribution, a small average pore size, and a high density of 1.88 g cm −3 were prepared by the investigation and optimization of the Si 3 N 4 slurry formulation. After gas pressure sintering, Si 3 N 4 ceramics with a density of 3.23 g cm −3 , dimensions of 78 mm × 78 mm, and a thickness of 0.55 mm were obtained. The microstructure of the Si 3 N 4 ceramics showed a bimodal distribution and a low content of glassy phases. The thermal conductivity of the Si 3 N 4 ceramics was 100.5 W m −1 K −1 , the flexural strength was 735 ± 24 MPa, and the fracture toughness was 7.17 MPa m 1/2 .
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2019
·
IF 4.63
Peng Wu,Jiaqiang Sun,Mohamed Abbas,Pengfei Wang,Yilong Chen,Jiangang Chen
Hydrophobic SiO 2 -supported Fe-Ni bimetallic catalysts were synthesized by facile hydrothermal method, followed by grind-mixing process. The as-synthesized nanoparticles were appointed as robust catalysts in the methanation process to improve the calorific value of the natural gas. Notably, the functionalization of SiO 2 surface with a hydrophobic layer was performed using a fluorinated alkyl group, as a critical step to prohibit the water-gas shift (WGS) reaction and consequently produce low amount of CO 2 content during the methanation process. The obtained catalytic results demonstrated that Fe 1.5 Ni 1.5 catalyst exhibited an excellent CO conversion of 95.2% at 320 °C with a natural gas calorific value of 56.4 MJ Nm −3 , which is much higher than the previously reported results when traditional Ni-based catalysts used. Moreover, the modified hydrophobic catalyst exhibited a lower CO 2 selectivity compared with unmodified one. This study provides a new and promising insight for the design and development of high-calorie SNG product.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xingyu Xiao,Liangliang Liu,Junhao Ma,Yuan Ren,Xiaowei Cheng,Yongheng Zhu,Dongyuan Zhao,Ahmed A. Elzatahry,Abdulaziz Alghamdi,Yonghui Deng
Owing to their distinct chemical and physical properties, mesoporous metal oxide semiconductors have shown great application potential in catalysis, electrochemistry, energy conversion, and energy storage. In this study, mesoporous crystalline SnO2 materials have been synthesized through an evaporation-induced co-assembly (EICA) method using poly(ethylene oxide)-b-polystyrene diblock copolymers as the template, tin chlorides as the tin sources, and tetrahydrofuran as the solvent. By controlling conditions of the co-assembly process and employing a carbon-supported thermal treatment strategy, highly ordered mesoporous SnO2 materials with a hexagonal mesostructure (space group P63/mmc) and crystalline pore walls can be obtained. The mesoporous SnO2 is employed for fabricating gas sensor nanodevices which exhibit an excellent sensing performance toward H2S with high sensitivity (170, 50 ppm) and superior stability, owing to its high surface area (98 m2/g), well-connected mesopores of ca. 18.0 nm, and high density of active sites in the crystalline pore walls. The chemical mechanism study reveals that both SO2 and SnS2 are generated during the gas sensing process on the SnO2-based sensors.
✓ 已验证
DOI
高影响因子
PHYSICA SCRIPTA
·
2022
·Vol. 98
·期 1
·015012
·
IF 3.081
Juncheng Zhou,Xinyue Huang,Wenlin Feng
A Michelson interferometric carbon monoxide (CO) fiber-optic sensor based on Co/Ni-MOF-74 is proposed and fabricated. The bimetallic-ion-coordination MOFs material Co/Ni-MOF-74 was prepared by solvothermal method. Through XRD and XPS characterizations, the results show that Co/Ni-MOF-74 and Ni-MOF-74 have the same crystal structure. Co/Ni-MOF-74 has a good adsorption effect on CO, and it is integrated into the optical fiber sensing structure for CO detection. In the CO concentration range of 0–35 ppm, the sensitivity and linearity are 0.022 35 dB/ppm and 0.999 36, respectively. The detection limit of the sensor is about 1.990 46 ppm. The presented fiber-optic sensor has excellent selectivity, resistance to temperature interference and good time stability, and it is expected to be applied to the detection of trace CO.
✓ 已验证
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Yi-Ming Gu,Ya-Hui Wang,Sheng-Sheng Zhao,Hong-Jun Fan,Xiao-Wei Liu,Zhiping Lai,Shu-Dong Wang
Carbon capture from flue gases is one of the crucial routines for reducing current CO 2 emissions and mitigating the greenhouse effect. Metal-organic frameworks (MOFs) have received a lot of interest as efficient solid adsorbents for CO 2 /N 2 separation in flue gas treatment. However, many MOF materials are susceptible to the presence of water vapor, which has a significant impact on their adsorption efficacy and moisture stability. Here in this work, we reported two pillar-layered Zn-MOFs with N -donors, i.e., Zn 2 (TRZ) 2 (Fuma) and Zn 2 (TRZ) 2 (BDC), which demonstrated high CO 2 uptakes (3.92 and 1.52 mmol/g) and CO 2 /N 2 (132 and 20.5) adsorption selectivities at 298 K and 101 kPa, among the best comprehensive results reported by far. After seven days of exposure to a 100 % RH environment, it was found that, the Zn-N pillar contributes to the robust structure of MOFs . Furthermore, in-depth theoretical calculations indicated the guest-framework interactions, and dynamic sorption tests confirmed high working capacities (2.78 and 1.14 mmol/g), sufficient water stability and remarkable cycling performance of the studied MOFs under humid ambient conditions. We believe this work provides a routine to prepare robust and promising candidates to address the challenge in carbon capture under humid conditions.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）