APPLIED CATALYSIS B-ENVIRONMENTAL
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2020
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IF 16.683
Guobo Li,Kai Shen,Ling Wang,Yaping Zhang,Hongqiang Yang,Peng Wu,Bing Wang,Shule Zhang
Development of an efficient synergistic degradation technology to prevent the emission of chlorinated organics and NO x from industrial sources without forming harmful by–products, is a major challenge in environmental chemistry. The designed multi–active center catalyst (PdV/TiO 2 ) showed excellent CB/NO synergistic removal conversion efficiency and target product selectivity. Experimental and DFT calculation results indicated that Pd was the common center for adsorption of CB, O 2 , NH 3 and NO x molecules. The O vacancies (VO x –1 and TiO x –1 ) generated during the CB ring opening process was conducive to adsorption of reaction gas molecules, accelerating CBCO and NH 3 –SCR reaction. The adsorbed NH 3 species would dissociate H protons to provide Brønsted acidic sites necessary for Cl conversion. O vacancies structure was easier to be restored by reoxidation with the participation of NO 2 . Certain synergistic effect in the removal of CB and NO on the multi–active center catalyst surface was found.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2016
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IF 2.567
Jian Jian,Kuiyi You,Qing Luo,Hongxu Gao,Fangfang Zhao,Pingle Liu,Qiuhong Ai,He’an Luo
Developing an economic and efficient approach for the production of adipic acid is a grand challenge in the chemical industry. Toward this goal, we report a simple method for selective synthesis of adipic acid from cyclohexane with NO2 by using Ni–Al–VPO/MCM-41 as catalyst. The physical-chemical properties of supported Ni–Al–VPO/MCM-4 catalysts were characterized, the reaction conditions were optimized, and the reusability of the catalyst was examined. The results showed that the supported 30%Ni–Al–VPO/MCM-41 catalyst exhibited excellent catalytic performance with 65.1% of cyclohexane conversion and 85.3% of selectivity toward adipic acid, especially, its catalytic performance was still stable after five runs. Maybe this developed method has potential industrial application prospects for production of adipic acid.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2024
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IF 3.9
Kashif Nawaz Khattak,Maosen Zhang,Caixia Deng,Shuang Li,Ling Jiang,Pran Gopal Karmaker,Xiupei Yang
In this work, the hybrid material NH 2 -MIL-125(Ti)@TpPa-NO 2 was synthesized by grafting an amino-functionalized titanium-based metal–organic framework (NH 2 -MIL-125(Ti)) with 2,4,6-tri(4-pyridyl)-1,3,5-triazine-nitro (TpPa-NO 2 ) moieties. The resulting composite material exhibited remarkable removal efficiency owing to the synergistic effects derived from the combination of the NH 2 -MIL-125(Ti) and TpPa-NO 2 components. The material demonstrated excellent stability and recyclability, making it a promising candidate for the treatment of wastewater containing rhodamine-B (Rhd-B). Some characterization techniques were employed to elucidate the structural features and surface morphology of the hybrid material. The adsorption capacity of NH 2 -MIL-125(Ti)@TpPa-NO 2 for Rhd-B dye was evaluated, and the results revealed an exceptional removal efficiency of 99.96 % and a high adsorption capacity of 25.54 mg/g, highlighting the superior adsorption performance of the material. The adsorption process was found to follow Langmuir isotherm and pseudo-second-order kinetics, indicating that chemisorption is the predominant mechanism governing the uptake of Rhd-B dye onto NH 2 -MIL-125(Ti)@TpPa-NO 2 .
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ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Jing Feng,Lei Feng,Shuo Sun,Xujie Wang,Huitian Zhi,Ruhui Shang,Yingchao Yang,Luyao Wang,Zhengquan Yan,Lei Hu
Background NO 2 − and S 2− are two kinds of common toxic anions widely distributed in environmental water, soil and food products. Human beings have suffered a lot of diseases from intake of excessive NO 2 − or S 2− , i.e ., infantile methemoglobin , cancer and even to death. Although tremendous efforts have been afforded to monitor NO 2 − and S 2− , most were high instrument-depended with complex processing procedures. To keep food safety and to protect human health, it will be a huge challenge to develop a convenient and efficient way to monitor S 2− and NO 2 − in practice. Results A kind of folic acid capping Bi 3+ -doped Ag quantum dots (FA@Bi 3+ -Ag QDs) was developed for the first time by one-pot homogeneous reduced self-assembly. Not only did FA@Bi 3+ -Ag QDs possess intrinsic fluorescent property, it expressed synergistic peroxidase-like activity to catalyze the redox of 3,3′,5,5′-tetramethylbenzidine (TMB) and H 2 O 2 with K m / v max of 0.087 mM/6.61 × 10 −8 M s −1 and 6.42 mM/6.25 × 10 −7 M s −1 respectively. Interestingly, trace S 2− could exclusively alter its fluorescent property and peroxidase-like activity, exhibiting significant hypochromic and “turn-on” fluorescent effects. While trace NO 2 − could make FA@Bi 3+ -Ag QDs-TMB-H 2 O 2 system hyperchromic. Under the optimized conditions, FA@Bi 3+ -Ag QDs were applied for dual-mode recognition of S 2− and visual sensing of NO 2 − in real food samples with satisfactory recoveries, i.e ., 100.7–107.9 %/95.8–104.7 % and 97.2–104.8 % respectively. The synergistic enzyme-mimic mechanism of FA@Bi 3+ -Ag QDs and its selective response mechanisms to S 2− and NO 2 − were also proposed. Significance This represents the first nanozyme-based FA@Bi 3+ -Ag QDs system for dual-mode recognition of S 2− and visual sensing of NO 2 − , well meeting the basic requirement in drinking water set by WHO. It will offer a promising way for multi-mode monitoring of different pollution using the same nanozyme-based sensor.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Jinbo Zhang,Jian Zhou,Hui Chen,Yanghui Liu,Dongfang Liang,Yihao Guo,Yihan Zhao,Yongqing Fu,Huigao Duan
There is a great concern for nitrogen oxide (NO 2 ) due to its hazardous effects on environment and human health, therefore, many types of NO 2 sensors have been proposed. Among them, surface acoustic wave (SAW) NO 2 sensors show intrinsic advantages such as wireless monitoring, but their combined sensitivities, responses, and limits of detection operated at room temperature remain huge challenges. In this study, we proposed an integration strategy in which graphene oxide-molybdenum disulfide/tin dioxide (GO-MoS 2 /SnO 2 ) ternary composite film was rationally designed on a SAW resonator for detection of low concentrations of NO 2 at room temperature (25°C), and its response speed are enhanced with ultraviolet (UV) light irradiation. Characterization results revealed that MoS 2 and SnO 2 formed the MoS 2 /SnO 2 heterojunctions through interfacial chemical bonds of S-Sn-O, and the GO-MoS 2 /SnO 2 ternary composite showed a hierarchical structure with the heterojunctions exposed and covered by the flake-structure GO. It achieved a large specific surface area of 111.6 m 2 /g, abundant functional groups, and numerous surface defects, providing plentiful adsorption and reaction sites of NO 2 . The developed NO 2 sensor showed a low limit of detection of 1 ppm, a high sensitivity of ∼164.77 Hz/ppm, and fast response/recovery time of 16.4 s/19.1 s, as well as excellent repeatability, selectivity, and long-term stability. The key sensing mechanisms were identified as the large surface areas of the stacked composite leading to the increased adsorption and reaction sites, enhanced conductivity through the MoS 2 /SnO 2 heterojunctions, and numerous photogenerated charge carriers produced by UV activation.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Yu Qiao,Jinniu Zhang,Jia Liu,Yumeng Liu,Xinlei Zhang,Zhibo Yang,Xiaoqiang Yin,Jianzhi Gao,Chunlan Wang,Hongbing Lu
NO 2 is one of the most important atmosphere pollutants, causing great harm to the human body at very low concentrations (ppb levels). Herein, a novel fabrication idea for gas sensing materials was reported to detect ppb-level NO 2 via MOF-derived porous In 2 O 3 nanospheres (NSs) sensitized by CdS quantum dots (QDs). The good distribution of CdS QDs (2.5–4.0 nm) on porous In 2 O 3 NSs was verified by the transmission electron microscopy and element mapping analyses. In comparison to In 2 O 3 NSs, the CdS@In 2 O 3 composite nanospheres (CNSs) exhibited exceptional responses to ppb-level concentrations of NO 2 ( S =425.1@100 ppb) at room temperature (RT, 25 °C), while also demonstrating good selectivity and response reproducibility. These improvements in sensing performance were attributed to the synergies of the electronic effects of CdS QDs, MOF-derived porous nanostructures , and enhanced adsorption of NO 2 and active O 2 – by well-dispersed CdS QDs. This work emphasizes that the MOF-derived In 2 O 3 porous NSs sensitized by CdS QDs can accurately detect ppb-level concentrations of the NO 2 at RT.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Jingwen Qian,Susu Liu,Zhongyu Wang,Mingyi Yu,Zheng Lian,Shule Zhang,Qin Zhong
In the typical wet flue gas denitration technology using sulfite solutions, the rapid free radical chain reaction of SO3•– oxidation by O2 is the main reason for the significant consumption of absorbents and inefficient denitration. The study utilizes l-ascorbic acid (VC) to inhibit the free radical chain reaction. VC combined with SO3•– to form stable compounds, which hindered the oxidation of SO3•– to SO5•– by O2, leading to an 80.7 mol % decrease in Na2SO3 consumption by adding millimolar-level VC. Compared to the sulfite solution, the best denitration efficiency of the VC/Na2SO3 mixture solution increased from 94.4 to 99.2 vol %, and the absorption time for absorption efficiency above 90 vol % was extended from 7 to 72 min. Additionally, a macro absorption model describing the rates of macro absorption was established based on various operating conditions.
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SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Zhidong Jin,Jinbo Zhao,Lin Liu,Fei Liu,Dewen Zhao,Zhou Wang,Fenglong Wang,Jiurong Liu,Yue Mou,Lili Wu
Realizing nitrogen dioxide (NO 2 ) detections based on semiconductor-based gas sensors with high tolerance to humidity conditions is deemed to be a long-term challenge. To independently acknowledge the physiosorbed-water influence mechanism on semiconductor-based sensors, hydrophobic zeolitic imidazolate framework-8 (ZIF-8) covered chemisorbed-oxygen-nonexistence zinc hydroxyfluoride (ZnOHF) snowflake-like nanorod bundles are synthesized for NO 2 detections with non-hindrance of interfering gases and high humidity in our work. Gas-sensing testing results display that the 0.6ZIF-8/ZnOHF-based gas sensor provides an optimum NO 2 response of 12.1–10 ppm NO 2 at the operating temperature of 200 ℃ with excellent NO 2 selectivity. As the relative humidity (RH) increases from 20% RH to 80% RH, the response of the 0.6ZIF-8/ZnOHF sensor shows a marginal fluctuation of only 13%, exhibiting outstanding anti-humidity characteristics towards NO 2 detections, the outperformed NO 2 selectivity and humidity tolerance of which are greatly attributed to the unique band structures of ZnOHF and the surficial hydrophobic treatment by ZIF-8, which is further validated via In-situ diffuse reflection infrared Fourier transform spectroscopy ( In-situ DRIFTS) and electronic structure analyses. Humidity impact on ZnOHF poses a persuasive evidence for establishing the separate physiosorbed water interfering mechanism on semiconductors. This work endows a perspective on optimizing humidity tolerance for semiconductor-based sensors at low operating temperature.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Yongjiao Sun,Jun Li,Yuchen Hou,Bingliang Wang,Wendong Zhang,Koichi Suematsu,Lin Chen,Jie Hu
Electrically conductive metal-organic frameworks (EC-MOFs) exhibit significant potential application as sensing materials for chemical resistance gas sensors. Herein, we developed a flexible gas sensor based on Ni 3 (HITP) 2 nanosheets co-functionalized with noble metal nanoparticles (NPs) and WS 2 quantum dots (QDs) for NO 2 detection at room temperature. The gas sensing performance was regulated by optimizing the metal species and loading ratios of WS 2 QDs. The measured results revealed that Au NPs and 2 mol% WS 2 achieved the most effective enhancement for NO 2 sensing performance. Therefore, Au NPs was selected to optimize WS 2 -2/Ni 3 (HITP) 2 sensor for further improving the sensing properties. A unique hierarchical structure based on gas sensor (Au 3 @WS 2 -2/Ni 3 (HITP) 2 sensor) enables high response (14.73 % to 5 ppm NO 2 ), rapid response/recovery time (97 s/110 s), good selectivity, anti-humidity, repeatability, long-term stability as well as flexibility at room temperature. Furthermore, density functional theory (DFT) and band theory were employed to comprehend adsorption energies and the electronic structures at atomic scale, elucidating the intrinsic correlation between NO 2 adsorption behavior and Ni 3 (HITP) 2 surface and the sensitization mechanism of heterostructures. These findings provide novel insights for designing high-performance NO 2 gas sensors worked at room temperature and guidance for EC-MOFs sensing mechanism.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xianjie Wang,Yaning Zhao,Hengsheng Wei,Yi Wang,Jingdong Gou,Jinhui He,Xue Ma,Louwei Cui,Liuyi Pan,Jiaojiao Liu,Dong Li
The separation of coal-derived C8 cyclohexane isomers, particularly cis-1,3-dimethylcyclohexane (cis-1,3-DMCH) and ethylcyclohexane (ECH), remains challenging due to their similar molecular structures and physicochemical properties, while research on cycloalkane isomer separation is limited. A series of functionalized UiO-66 derivatives (UiO-66, UiO-66-(CH 3 ) 2 , UiO-66-OH, and UiO-66-NO 2 ) were synthesized via solvothermal methods and systematically evaluated for their adsorption and separation performance toward C8 cyclohexane isomers through single-component and competitive batch adsorption experiments, dynamic breakthrough tests, and molecular simulations. Among the investigated materials, UiO-66-NO 2 demonstrated superior selectivity (α = 5.10) for cis-1,3-DMCH over ECH, with excellent regeneration stability over multiple cycles, significantly outperforming commercial activated carbons and zeolites. Mechanistic studies revealed that the enhanced selectivity arises from a dual mechanism combining geometric confinement effects and electronic recognition, where the oblate geometry and larger dipole moment of cis-1,3-DMCH enable preferential adsorption through strengthened C-H···O and C-H···NO 2 interactions, as confirmed by calculated binding energies (−37.15 kJ/mol for cis-1,3-DMCH vs. -22.13 kJ/mol for ECH) and diffusion coefficients. This work demonstrates rational MOF functionalization for efficient cycloalkane isomer separation, providing a promising strategy for coal-derived naphtha valorization.
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ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Linjia Li,Yiran Zhang,Jiaqi Feng,Shu Zhao,Wei Qiu,Ke Li,Zhen Huang,He Lin
Derived from carbon capture, utilization, and storage (CCUS), integrated carbon capture and utilization (ICCU) has been widely developed recently. Understanding the influences of H2O, O2, and NO2 on dual-function materials (DFMs) performance is crucial for their practical application. In this study, the influence mechanisms of O2, H2O, and NO2 on CeNiCa DFM for ICCU-methanation are investigated. The catalyst was oxidized by O2, H2O, and NO2. NO2 competes with CO2 for basic adsorption sites, inhibiting CO2 adsorption and methanation, but adsorbed NO2 is reduced mainly to N2 and NH3 during methanation. H2O induces agglomeration of the adsorbent and catalyst─the former due to the Ca(OH)2 mobility, and the latter attributed to OH-promoted migration and agglomeration of Ni. On this basis, it is proposed that the dominant roles of H2O, O2, and NO2 change in two- and multi-interference components, but the joint effects among them should not be neglected.
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高影响因子
MATERIALS RESEARCH BULLETIN
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2012
·Vol. 47
·期 11
·3277-3282
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IF 2.105
Jing Bo Zhang,Xiao Ning Li,Shou Li Bai,Rui Xian Luo,Ai Fan Chen,Yuan Lin
Well-crystallized one-dimensional (1D) SnO 2 nanobelts were in situ prepared using a simple water-assisted chemical vapor deposition (CVD) method. The small Sn particles with Au-modifications were used as source materials instead of big size Sn grains to ensure the high yield of SnO 2 belts. The Au layer was modified on the small Sn particles by treating Sn powders in HAuCl 4 solution combined with the UV irradiation. The as-prepared SnO 2 nanobelts were characterized by SEM, HRTEM, XRD, EDS and XPS. These results indicate that the growth temperature plays an important role in controlling the length-to-width ratio of nanobelts. The length-to-width ratio decreases with the growth temperature from 850 °C to 1000 °C. The nanobelts prepared at 850 °C shows a single-crystalline tetragonal rutile phase with a high length-to-width ratio (approximately tens of microns in length and 40–70 nm in width). However, below 850 °C, nanobelts cannot be formed. The as-prepared nanobelts exhibited excellent sensing properties compared with SnO 2 nanoparticles and high sensing selectivity towards NO 2 . The high sensing selectivity to NO 2 is attributed to the oxygen vacancies presenting in the as-prepared nanobelts.
研究领域:
材料科学
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纳米技术
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传感器学
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无机化学
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半导体材料
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危险品化学品经营许可证（带存储）