PHYSICA SCRIPTA
·
2025
·Vol. 100
·期 6
·065603
·
IF 2.6
Yashuai Zhang,Honghua Liao,Congkui Tian,Xu Yang,Jingwen Cui,Zhuo Liu
A double quartz dielectric barrier discharge with water falling film (WF-D-DBD) reactor is designed to reduce electrode galvanic corrosion for longer life. In order to investigate the influence of high-voltage electrode configuration on the synthesis rate and energy consumption of plasma gas–liquid nitrogen fixation, four different external high-voltage electrodes, namely, mesh electrode, sheet electrode, multi-electrode, and copper wire electrode, were studied and dependence of the electrical parameters (e.g., volt-ampere characteristic, dielectric equivalent capacitance, and power factor), the emission spectra on the electrode configuration was obtained. The results show a nitrogen fixation reactor with a mesh-electrode structure can achieve a faster synthesis rate and higher energy efficiency, while the one with the multi-electrode structure can reduce the discharge current and ensure safe operation and long-time running. The selectivity of nitrogen fixation to nitrate was 100% in all four reactors. It is concluded that the production of OH carboxyl groups from water decomposition plays an important role in the reaction, and the presence of hydrogen peroxide and ozone improves the selectivity. The reticulated reactor exhibited the most favorable performance, with synthesis rate of 160.9 μmol min−1 and energy consumption of 43.2 MJ mol−1. This result is expected to fulfil the need for green, distributed and sustainable nitrogen fixation.
✓ 已验证
产品关联
DOI
高影响因子
Greenhouse Gases-Science and Technology
·
2025
·
IF 2.8
Ziyong Li,Qingdan Huang,Tingyan Wang,Huihong Huang,Haoyong Song
The amino groups and its substituents of organic amine absorbents have an important influence on the CO 2 absorption and desorption performance. In this study, four diamines with the same primary amino group and another different amino groups were selected as absorbents, including 1,3-propanediamine (1,3-PDA), 3-methylaminopropylamine (MAPA), 3-dimethylaminopropylamine (DMAPA), and 3-diethylaminopropylamine (DEAPA). The phase-change absorption system uses a mixture of polyether and H 2 O as the solvent. The CO 2 absorption performance of flue gas was studied with the analysis on absorption and desorption rate, cycle capacity, and desorption ratio. The effect of diamine molecular structures on phase-change CO 2 capture was investigated by nuclear magnetic carbon spectroscopy. The results show that DEAPA exhibits highest absorption capacity of 1.21 mol CO 2 /mol amine and recycling capacity of 1.09 mol CO 2 /mol amine. The absorption rate of primary and secondary diamines in the phase-change system is significantly higher than that of primary and tertiary diamines. The diamine system with tertiary amino groups has significantly faster desorption rate, higher desorption ratio, and cycle capacity than the primary and secondary diamine systems. The intramolecular tertiary amino group is more conducive to promoting the absorption of CO 2 than the intermolecular tertiary amino group, which can increase the absorption rate of CO 2 by the primary amino group and enhance the CO 2 desorption.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yizheng Tao,Lei Wang,Benxing Li,Jin Huang,Yichang Pan
Interfacial compatibility is a critical prerequisite for maximizing the gas separation pot entail of metal-organic framework (MOF)-based mixed-matrix membranes (MMMs). In this study, an innovative strategy that employs polymers of intrinsic microporosity (PIMs) covalently grafted onto MOF surfaces has been introduced to engineer compatible interfaces through graded interfacial bonding. Through the reaction between PIM-COCl functionalized polymers and ZIF-NH 2 nanoparticles at ambient temperature, amide-bonded PZIF-CONH nanohybrids have been synthesized, which exhibited superior dispersibility in both solvent media and polymer matrices. Notably, the PZIF-CONH nanohybrids retained their intrinsic high porosity without encountering the pore-blocking issues commonly associated with conventional surface modifiers, owing to the microporous nature of PIM materials. The PIM-based surface modification establishes strong interfacial interactions between ZIF-particles and the polyimide matrix, leading to the fabrication of defect-free MMMs. These gas separation membranes have demonstrated significantly enhanced CO 2 permeability and CO 2 /CH 4 selectivity, exceeding the 2008 upper bound. The gas-permeable polymeric modification approach can offer a promising solution for enhancing the stability and separation performance of MMMs.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2025
·
IF 2
Xuekai Shan,Didi Lu,Peihang Wang,Zhuqiu Sun,Bairen Yang
Selenium(IV) (Se(IV)) supplementation was evaluated as a biostimulant to enhance m-dichlorobenzene (m-DCB) biodegradation in laboratory-scale biotrickling filters (BTFs) inoculated with Brevibacillus agri DH-1. An optimal Se(IV) concentration of 4.0 mg/L increased steady-state m-DCB removal efficiency from 74.38% to 81.74% at an empty bed residence time (EBRT) of 90 s. When the EBRT was reduced to 30 s, BTF2 maintained a 41.74% removal efficiency, compared with only 17.64% for BTF1. Se(IV) promoted extracellular polymeric substance production, strengthened biofilm adhesion, enhanced catechol-1,2- and catechol-2,3-dioxygenase activities, and moderated surface charge to favour microbial aggregation. Fourier-transform infrared spectroscopy confirmed Se(IV)-facilitated dechlorination and aromatic-ring cleavage, while 16S rRNA sequencing revealed enrichment of key degraders including Brevibacillus, Pseudomonas, Bacillus, Rhodanobacter, and Sphingobium. These findings demonstrate a novel micronutrient-based strategy to improve BTF performance for treating chlorinated aromatic exhaust gases.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Weizhen He,Wei Zheng,Hongxiao Zu,Zequn Yang,Jianping Yang,Wenqi Qu,Hailong Li
The inherently poor self-binding capability of copper sulfide (CuS) represents a significant obstacle to its practical application in Hg 0 removal from natural gas, as it hinders the mechanical fabrication of robust sorbent monoliths required for stable and efficient operation in fixed-bed reactor systems. In this study, Sepiolite-Cu x S y pellets with controllable sizes were synthesized through sequential room-temperature CuS impregnation on sepiolite substrates, followed by extrusion-spheronization processing. The obtained Sepiolite-Cu x S y pellets exhibited excellent Hg 0 capture efficiency at the representative temperature of natural gas processing of 30 °C. Hydrogen sulfide obviously enhances Hg 0 removal efficiency through an in situ sulfidation mechanism, demonstrating its potential for Hg 0 immobilization in natural gas. Low-field NMR analysis confirmed the increase of weakly bound water in Sepiolite-Cu x S y , which enhanced the formation of the hydration layer and significantly improved its mechanical strength and wear resistance. To sum up, a groundbreaking granulation strategy was developed in this work to prepare a superior CuS based pellet sorbent for the removal of mercury from natural gas, the elucidated mechanisms also would benefit the understanding of the role of hydration layer in material molding.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lili Gao,Pei Fang,Ye Yang,Ping Hu,Siyan Yang,Jiale Zhu,Fan Yang,Hua Wang,Kui Zhao
Because of their excellent stability and photoelectric properties, perovskite single crystals have been widely applied in fields such as detection and photovoltaics. This study demonstrated a ligand-assisted gas pump method for perovskite crystallization, in which the influence of the pressure change rate on the morphology of perovskite crystals and the quality of ligand-assisted crystallization were investigated. CH3NH3PbBr3 single crystals were obtained via the gas pump method assisted with 3-(decyldimethylazaniumyl)propanesulfonate (DPSI) as the ligand for crystallization. With varying rates of environmental pressure variation, the (100) crystal surface exhibited a step-like growth process, and the steps were “center-initiated, outward-expanding”. When the pressure changes rapidly, the steps are wide and steep; as the pressure change rate gradually slows, the slope of the steps becomes gentler. When the growth rate reached 20 Pa/h, the crystal surface became flat, and the growth steps disappeared. The rate of pressure change enables control of the crystal step morphology. To further control crystal growth and quality, the DPSI ligand was employed during the crystal growth process under low-pressure conditions. The −SO3– group in DPSI anchors uncoordinated Pb2+, effectively suppressing solution nucleation. This interaction significantly enhances crystal quality, increases crystal stability, and effectively expands the size of MAPbBr3 crystals. The optimized MAPbBr3 detector achieved an outstanding X-ray sensitivity of up to 10798 μC Gyair–1 cm–2 at a bias of 50 V, along with a minimum detectable dose rate of 0.19 μGyair s–1 for 40 kVp X-rays. These advancements have contributed to reducing radiation exposure for patients during medical X-ray diagnostics. The methodology employed in this study enables the fabrication of high-quality crystals through controlled growth rate modulation, demonstrating significant potential for detector applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Fei Wang,Mengqi Liu,Peng Zhang,Yifan Xu,Daiming Liu,Guodong Zhang
Although methane-dense storage is anticipated in wet nanoporous materials using the synergy of adsorption and hydration (the so-called adsorption–hydration natural gas, AHNG), the understanding of this technology is still insufficient, which limits its large-scale application. Here, new insights into the AHNG technology are presented, including new findings, phenomena, problems, and solutions, which are helpful to improve the understanding of this technology, enhance methane storage density, and pave the way for its application. Both synergy and antagonism between adsorption and hydration were observed; the synergy increases methane storage capacity, while the antagonism weakens the adsorption and hydration efficiency. In addition, two special phenomena were discussed, which have never been noticed by the hydrate community, and artificial intelligence was thought to provide an effective method for material design, while a storage cell was suggested to improve inner mass transfer of AHNG storage tanks.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Technologies
·
2025
·Vol. 10
·期 20
·e00687
·
IF 6.2
Sheng Bi,Lifu Zhang,Xu Han,Junxiu Piao,Yuhui Meng,Dongliang Xu,Xiaoran Yang,Zhanwu Ding,Tianyi Li,Chengming Jiang
The rapid expansion of energy gas pipelines, driven by societal progress, highlights the critical need for their continuous and safe operation. However, corrosion, aging, natural disasters, and third-party damage pose significant risks, with undetected leaks potentially leading to catastrophic outcomes. Current gas pipeline leakage detection methods typically rely on active monitoring systems that are expensive and dependent on external power sources. In the work, a flexible wood-based self-powered sensor array (WSFSA) is introduced for all-weather, large-scale monitoring of energy gas pipelines. The WSFSA, organized in a 3 × 3 sensor layout, generates a responsive voltage signal under gas pressure with millisecond-scale response times. At a low pressure of 0.7 MPa, it outputs a practical voltage signal of at least 15 V, distinguishing it from manual triboelectric outputs. Additionally, the WSFSA maintains this output under prolonged intermittent pressure. The array exhibits exceptional sustainability, corrosion resistance, humidity tolerance, and stability across a wide temperature range. This work presents a cost-effective and efficient solution for real-time pipeline monitoring, significantly enhancing leak detection reliability and responsiveness. The WSFSA offers a robust safeguard for global energy infrastructure, supporting the safe and sustainable delivery of energy gases.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Manwen Hu,Jiejie Yu,Ruijie Qin,Jinwu Hu,Jingcheng Xu,Hui-jun Li,Hui Xu,Jingbo Chen,Ding Wang
Long-term exposure to xylene can seriously damage the respiratory and central nervous systems. Xylene poses significant health risks even at trace levels in the ppb range, highlighting the need for the ppb-level detection. Designing high-performance gas-sensitive materials and sensing structures is essential to address high operating temperatures and poor trace detection. In this work, PtPd nanobimetallic-sensitized CeO 2 porous nanospheres were prepared as the upper catalytic layer via solution self-assembly and impregnation, with WO 3 nanofibers as the lower sensing layer to form a bilayer sensor. The 1 wt%Pt 70 Pd 30 /CeO 2 /WO 3 sensor showed the best response (R a /R g = 38.67) to 10 ppm xylene at 180℃, and it demonstrates a obvious response to xylene at ultra-low concentrations down to 1 ppb (R a /R g = 1.4). The sensor also exhibits good stability and notable humidity resistance. By combining in-situ infrared and online mass spectrometry, we show that xylene is catalytically converted into toluene and methyl radicals upon passing through the 1 wt% Pt 70 Pd 30 /CeO 2 layer, significantly enhancing response performance. In summary, the novel bilayer sensor developed in this study enables trace xylene detection at the ppb level and shows potential for environmental monitoring applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Mathankumar Ganesan,Jin Li,Fei Wang
In this study, we report the synthesis of a MoS2/Ce2Sn2O7 composite via a simple hydrothermal method. The selectivity of the as-fabricated sensors was systematically evaluated against a range of volatile organic compounds, including ethanol, acetone, methanol, n-butanol, isopropanol, and triethanolamine. Notably, the MoS2/Ce2Sn2O7 heterojunction exhibited superior selectivity for NH3 gas at room temperature, with the MoCe3 sample showing an impressive response of 87.3% to 100 ppm of NH3. Furthermore, the MoCe3 sensor displayed a rapid response time of 40 s and an ultra-low detection limit of 50 ppt. The sensors demonstrated excellent repeatability, stability, and humidity resistance when exposed to NH3, with the MoCe3 sensor particularly excelling at lower concentrations at room temperature. The MoCe3 sample also exhibited low activation energy (5 kJ/mol) and enhanced surface band bending compared to other sensors. The gas adsorption/desorption behaviors and the underlying gas sensing mechanisms were systematically explored, highlighting the transition between n-type and p-type phases. The dual-mode sensing capability of the MoS2/Ce2Sn2O7 composite, operational at both room and lower temperatures, opens up diverse applications ranging from environmental monitoring to industrial safety.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Tao Feng,Jiaqing Sun,Kai Wang,Shiqing Song,Da Chen,Haining Zhuang,Jun Lu,Dejun Li,Xianle Meng,Mingliang Shi,Lingyun Yao,Chi-Tang Ho
Steeping process is an important factor for aroma release of tea, which has rarely been investigated for the aroma changes of raw Pu-erh tea (RAPT). In addition, the comprehensive aroma characteristics identification of RAPT infusion is necessary. In this study, GC–IMS coupled with principal component analysis (PCA) was used to clarify the difference of volatile profiles during the steeping process of RAPT. Furthermore, the volatiles contained in the RAPT infusion were extracted by three pretreatment methods (HS-SPME, SBSE, and SAFE) and identified using GC–O–MS. According to the odor activity value, 28 of 66 compounds were categorized as aroma-active compounds. Aroma recombination and omission experiments showed that “fatty”, “green”, “fruity”, and “floral” are considered to be the main aroma attributes of RAPT infusion with a strong relationship with 1-octen-3-one, 1-octen-3-ol, (E)-2-octenal, β-ionone, linalool, etc. This study will contribute a better understanding of the mechanism of the RAPT steeping process and volatile generation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2017
·Vol. 218
·期 22
·1700275
·
IF 2.5
Jiawei Xu,Chong Zhang,Zexiong Qiu,Zhenyu Lei,Bing Chen,Jia-Xing Jiang,Feng Wang
Two kinds of novel triphenylphosphine-containing microporous organic polymers are designed and synthesized via palladium-catalyzed Sonogashira−Hagihara coupling condensation reaction of triphenylphosphine oxide- and sulfide-based monomers with different arylethynylene linkers. The gas adsorption isotherms reveal that these polymers have strong binding affinity for CO 2 with high CO 2 adsorption capacity, although they have moderate Brunauer−Emmett−Teller surface area ranging from 684 to 883 m 2 g −1 . Among the resulting polymers, triphenylphosphine oxide–tris(4-ethynylphenyl)amine exhibits the highest CO 2 uptake capacity of 2.61 mmol g −1 at 273 K and 1.13 bar with relatively high gas selectivity of 60.2 for CO 2 over N 2 at 273 K.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）