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学者姓名：叶青
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Abstract ：
A series of RE-3Cu/Zr-PILC (RE = La, Ce, Nd, Eu) catalysts were prepared via an impregnation method and activities for NH3-SCR were evaluated. The physicochemical properties of each catalyst were explored using XRD, BET, H-2-TPR, NH3-TPD, XPS and in-situ DRIFTS techniques. The doping of RE had enhanced the NH3-SCR efficiency of 3Cu/Zr-PILC. Among them, the 6Ce-3Cu/Zr-PILC sample demonstrated exceptional performance, achieving NO conversion rates exceeding 90% within the temperature range of 250-350 degrees C. Moreover, it reached its peak NO conversion rate of 96.3% at 300 degrees C while maintaining an impressive resistance to SO2. According to the results of TPR, TPD and XPS analysis, the modification of RE (especially Ce) enhanced the redox properties, the surface acidity, the atomic ratio of Cu2+/Cu+ and the amount of surface chemisorbed oxygen in the 3Cu/Zr-PILC samples, all of these are favorable for the NH3-SCR reaction. Furthermore, in-situ DRIFTS analysis reveals that the NH3-SCR reaction of RE-3Cu/Zr-PILC samples at low temperatures is governed by the Langmuir-Hinshelwood (L-H) and Eley-Rideal (E-R) mechanisms, with the L-H mechanism being the predominant factor.
Keyword ：
Cu loading Cu loading low-temperature NH3-SCR low-temperature NH3-SCR Rare earth metal Rare earth metal Zr-PILC Zr-PILC
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| GB/T 7714 | Liu, Wenyi , Wang, Xinpeng , Qu, Chao et al. Rare Earth Metal (La, Ce, Nd, Eu) Doped Cu/Zr-PILC Catalysts for the Efficient NH3-SCR at Low Temperature [J]. | COMBUSTION SCIENCE AND TECHNOLOGY , 2023 . |
| MLA | Liu, Wenyi et al. "Rare Earth Metal (La, Ce, Nd, Eu) Doped Cu/Zr-PILC Catalysts for the Efficient NH3-SCR at Low Temperature" . | COMBUSTION SCIENCE AND TECHNOLOGY (2023) . |
| APA | Liu, Wenyi , Wang, Xinpeng , Qu, Chao , Meng, Fanwei , Yang, Fan , Zhang, Xin et al. Rare Earth Metal (La, Ce, Nd, Eu) Doped Cu/Zr-PILC Catalysts for the Efficient NH3-SCR at Low Temperature . | COMBUSTION SCIENCE AND TECHNOLOGY , 2023 . |
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Abstract ：
Lead (Pb) is a heavy metal commonly found in industrial exhaust gases, which can reduce catalytic activity of a catalyst for the NH3-SCR reaction. In this study, 4.0 wt% Mn-loaded Fe-pillared interlayer clay (4Mn/Fe-PILC) and its Co-modified catalyst (2Co-4Mn/Fe-PILC) were prepared, in the meanwhile the 4Mn/Fe-PILC-Pb and 2Co-4Mn/Fe-PILC-Pb samples were also obtained using the impregnation method with a Pb(CH3COO)(2) aqueous solution. It was found that the addition of 2.0 wt% cobalt could significantly enhance Pb resistance of the 4Mn/Fe-PILC catalyst. The characterization results revealed that the doping of Co to Mn/Fe-PILC increased the surface Mn4+ species concentration, reducibility, and acid site amount, thereby improving Pb resistance of the catalyst. Furthermore, the in situ DRIFTS results demonstrated that Co modification enhanced the adsorption capacity of NH3 or NO, especially influenced formation of the NH3 intermediates and bridging nitrate species, which were also conducive to the improvement in Pb resistance of the catalyst.
Keyword ：
NH3-SCR NH3-SCR Co modification Co modification Pb resistance Pb resistance Nitrogen oxide Nitrogen oxide Pillared clay Pillared clay
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| GB/T 7714 | Wang, Xinpeng , Ye, Qing , Liu, Wenyi et al. Enhanced Resistance to Pb Poisoning of the Co-modified Mn/Fe-pillared Clay Catalysts for NH3-SCR at Low Temperatures [J]. | CHEMISTRYSELECT , 2023 , 8 (10) . |
| MLA | Wang, Xinpeng et al. "Enhanced Resistance to Pb Poisoning of the Co-modified Mn/Fe-pillared Clay Catalysts for NH3-SCR at Low Temperatures" . | CHEMISTRYSELECT 8 . 10 (2023) . |
| APA | Wang, Xinpeng , Ye, Qing , Liu, Wenyi , Meng, Fanwei , Yang, Fan , Zhang, Xin et al. Enhanced Resistance to Pb Poisoning of the Co-modified Mn/Fe-pillared Clay Catalysts for NH3-SCR at Low Temperatures . | CHEMISTRYSELECT , 2023 , 8 (10) . |
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Abstract ：
The xCN/Ce-OMS-2 (x is the nominal weight percentages of g-C3N4, x = 5.0, 10.0, and 15.0 wt%) catalysts were prepared via an in-situ synthesis method. Physicochemical properties of the as-prepared materials were measured by means of the XRD, TEM, SEM, BET, XPS, H2-TPR, NH3-TPD, and in-situ DRIFTS techniques, and their catalytic activities for the selective catalytic reduction of NOx with NH3 (NH3-SCR) at low temperatures were evaluated. Among all the catalysts, the 10CN/Ce-OMS-2 catalyst showed the widest temperature span for NH3-SCR reaction and the best resistance to SO2 poisoning. This may result from that the modification of g-C3N4 promoted the electron transfer in catalyst, not only increased the concentration of active Mn4+ species and chemisorbed oxygen species, but also improved the surface acidity of the catalyst. In-situ DRIFTS results further showed that the modification of g-C3N4 increased the amount of acid sites and enhanced the formation of NH3 or NO intermediates (i.e., monodentate and bidentate nitrate), which enhanced the reaction activity of the catalyst.
Keyword ：
G-C 3 N 4 modification G-C 3 N 4 modification OMS-2 OMS-2 NO x degradation NO x degradation Ceria doping Ceria doping
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| GB/T 7714 | Wang, Xinpeng , Qu, Chao , Liu, Wenyi et al. Enhanced low-temperature NH3-SCR performance by g-C3N4 modified Ce-OMS-2 catalyst [J]. | MICROPOROUS AND MESOPOROUS MATERIALS , 2023 , 361 . |
| MLA | Wang, Xinpeng et al. "Enhanced low-temperature NH3-SCR performance by g-C3N4 modified Ce-OMS-2 catalyst" . | MICROPOROUS AND MESOPOROUS MATERIALS 361 (2023) . |
| APA | Wang, Xinpeng , Qu, Chao , Liu, Wenyi , Meng, Fanwei , Yang, Fan , Zhang, Xin et al. Enhanced low-temperature NH3-SCR performance by g-C3N4 modified Ce-OMS-2 catalyst . | MICROPOROUS AND MESOPOROUS MATERIALS , 2023 , 361 . |
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Abstract ：
使用膜分离处理含油废水过程中,膜表面油污残留是制约应用的关键问题.对基膜表面进行亲水改性是提高分离效率与减少油污吸附的有效方法.本研究利用二苯甲酮光交联反应的特性,在基膜表面共价交联了含有2-甲基丙烯酰氧乙基磷酸胆碱(MPC)的两性离子聚合物,在大幅度提高了膜表面的亲水性的同时确保了亲水层的稳定性.油水分离膜呈现超亲水的性质,纯水通量可提高至4.7×104 L/(m2·h),通量恢复率从90.0％提升至99.8％.由于在基膜与两性离子聚合物间构建了稳定的共价键,膜表面的亲水性在强酸与强碱的清洗后依然能够保持,该研究为稳定的油水分离膜表面亲水改性提供了新策略.
Keyword ：
共价交联 共价交联 超亲水 超亲水 油水分离 油水分离 二苯甲酮 二苯甲酮 两性离子聚合物 两性离子聚合物
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| GB/T 7714 | 陈聪 , 杨紫云 , 赵博远 et al. 紫外诱导超亲水油水分离膜的构建及其性能研究 [J]. | 膜科学与技术 , 2022 , 42 (6) : 101-109 . |
| MLA | 陈聪 et al. "紫外诱导超亲水油水分离膜的构建及其性能研究" . | 膜科学与技术 42 . 6 (2022) : 101-109 . |
| APA | 陈聪 , 杨紫云 , 赵博远 , 刘巧鸿 , 叶青 , 安全福 . 紫外诱导超亲水油水分离膜的构建及其性能研究 . | 膜科学与技术 , 2022 , 42 (6) , 101-109 . |
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Abstract ：
Different Cu contents (x wt%) were supported on the cryptomelane-type manganese oxide octahedral molecular sieve (OMS-2) (xCu/OMS-2; x = 1, 5, 15, and 20) via a pre-incorporation method. Physicochemical properties of the OMS-2 and xCu/OMS-2 samples were characterized by means of the XRD, FT-IR, SEM, TG/DTG, ICP-OES, XPS, O-2-TPD, H-2-TPR, and in situ DRIFTS techniques, and their catalytic activities were measured for the oxidation of CO, ethyl acetate, and toluene. The results show that the Cu species were homogeneously dispersed in the tunnel and framework structure of OMS-2. Among all of the samples, 15Cu/OMS-2 sample exhibited the best activities with the T-50% of 65, 165, and 240 degrees C as well as the T-90% of 85, 215, and 290 degrees C for CO, ethyl acetate and toluene oxidation, respectively, which was due to the existence of the Cu species and Mn3+/Mn4+ redox couples, rich oxygen vacancies, good oxygen mobility, low-temperature reducibility, and strong interaction between the Cu species and the OMS-2 support. The reaction mechanisms were also deduced by analyzing the in situ DRIFTS spectra of the 15Cu/OMS-2 sample. The excellent oxygen mobility associated with the electron transfer between Cu species and Mn3+/Mn4+ redox couples might be conducive to the continuous replenishment of active oxygen species and the constantly generated reactant intermediates, thereby increasing the reactant reaction rate.
Keyword ：
OMS-2 OMS-2 carbon monoxide oxidation carbon monoxide oxidation cryptomelane-type manganese oxide cryptomelane-type manganese oxide volatile organic compounds oxidation volatile organic compounds oxidation supported CuOx catalysts supported CuOx catalysts
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| GB/T 7714 | Fu, Zhidan , Chen, Mengyue , Ye, Qing et al. Enhanced Performance of the OMS-2-Supported CuOx Catalysts for Carbon Monoxide, Ethyl Acetate, and Toluene Oxidation [J]. | CATALYSTS , 2021 , 11 (6) . |
| MLA | Fu, Zhidan et al. "Enhanced Performance of the OMS-2-Supported CuOx Catalysts for Carbon Monoxide, Ethyl Acetate, and Toluene Oxidation" . | CATALYSTS 11 . 6 (2021) . |
| APA | Fu, Zhidan , Chen, Mengyue , Ye, Qing , Dong, Ning , Dai, Hongxing . Enhanced Performance of the OMS-2-Supported CuOx Catalysts for Carbon Monoxide, Ethyl Acetate, and Toluene Oxidation . | CATALYSTS , 2021 , 11 (6) . |
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Abstract ：
The poisoning effects of alkali metals (K and Na) and alkaline earth metals (Ca and Mg) on catalytic performance of the 2Nb4Ce/Zr-PILC catalyst for the selective catalytic reduction of NOx with NH3 (NH3-SCR) were investigated, and physicochemical properties of the catalysts were characterized by means of the X-ray diffraction XRD (XRD), Brunner-Emmet-Teller (BET), hydrogen temperature-programmed reduction (H-2-TPR), X-ray Photoelectron Spectroscopy (XPS), ammonia temperature-programmed desorption (NH3-TPD), and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS) techniques. Doping of M (M = K, Na, Ca, and Mg) deactivated the 2Nb4Ce/Zr-PILC catalyst according to the sequence of 0.8 K > 0.8 Na > 0.8 Ca > 0.8 Mg (M/Ce molar ratio = 0.8). The characterization results showed that the decreases in redox ability, NH3 adsorption, Ce3+/Ce4+ atomic ratio, and amount of the chemisorbed oxygen (O-beta) were the important factors influencing catalytic activities of the alkali metal-and alkaline earth metal-doped samples. Consequently, compared with the Mg- and Ca-doped samples, doping of K caused the 2Nb4Ce/Zr-PILC sample to possess the lowest redox ability, NH3 adsorption, and amount of the O-beta species, which resulted in an obvious deactivation effect.
Keyword ：
selective catalytic reduction selective catalytic reduction poisoning poisoning surface acidity surface acidity alkali metal alkali metal alkaline earth metal alkaline earth metal NH3-SCR NH3-SCR
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| GB/T 7714 | Li, Chenxi , Cheng, Jin , Ye, Qing et al. Poisoning Effects of Alkali and Alkaline Earth Metal Doping on Selective Catalytic Reduction of NO with NH3 over the Nb-Ce/Zr-PILC Catalysts [J]. | CATALYSTS , 2021 , 11 (3) . |
| MLA | Li, Chenxi et al. "Poisoning Effects of Alkali and Alkaline Earth Metal Doping on Selective Catalytic Reduction of NO with NH3 over the Nb-Ce/Zr-PILC Catalysts" . | CATALYSTS 11 . 3 (2021) . |
| APA | Li, Chenxi , Cheng, Jin , Ye, Qing , Meng, Fanwei , Wang, Xinpeng , Dai, Hongxing . Poisoning Effects of Alkali and Alkaline Earth Metal Doping on Selective Catalytic Reduction of NO with NH3 over the Nb-Ce/Zr-PILC Catalysts . | CATALYSTS , 2021 , 11 (3) . |
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Abstract ：
As a heavy metal, Pb is one component in coal-fired flue gas and is widely considered to have a strong negative effect on catalyst activity in the selective catalytic reduction of NOx by NH3 (NH3-SCR). In this paper, we investigated the deactivation mechanism of the Mo-Ce/Zr-PILC catalyst induced by Pb in detail. We found that NO conversion over the 3Mo4Ce/Zr-PILC catalyst decreased greatly after the addition of Pb. The more severe deactivation induced by Pb was attributed to low surface area, lower amounts of chemisorbed oxygen species and surface Ce3+, and lower redox ability and surface acidity (especially a low number of Bronsted acid sites). Furthermore, the addition of Pb inhibited the formation of highly active intermediate nitrate species generated on the surface of the catalyst, hence decreasing the NH3-SCR activity.
Keyword ：
Pb poisoning Pb poisoning surface acidity surface acidity NH3-SCR NH3-SCR Mo-Ce/Zr-PILC catalyst Mo-Ce/Zr-PILC catalyst
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| GB/T 7714 | Li, Chenxi , Cheng, Jin , Ye, Qing et al. The Deactivation Mechanism of the Mo-Ce/Zr-PILC Catalyst Induced by Pb for the Selective Catalytic Reduction of NO with NH3 [J]. | NANOMATERIALS , 2021 , 11 (10) . |
| MLA | Li, Chenxi et al. "The Deactivation Mechanism of the Mo-Ce/Zr-PILC Catalyst Induced by Pb for the Selective Catalytic Reduction of NO with NH3" . | NANOMATERIALS 11 . 10 (2021) . |
| APA | Li, Chenxi , Cheng, Jin , Ye, Qing , Meng, Fanwei , Wang, Xinpeng , Dai, Hongxing . The Deactivation Mechanism of the Mo-Ce/Zr-PILC Catalyst Induced by Pb for the Selective Catalytic Reduction of NO with NH3 . | NANOMATERIALS , 2021 , 11 (10) . |
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Abstract ：
The porous carbon (CKC-X-Y, CKC is the corn kernel-derived carbon; Xis the activation temperature; and Y is the KOH/CKC mass ratio (2, 3, 4, and 5)) adsorbents were prepared from corn kernels by the KOH activation method. Textural property and oxygen functional group amount of the CKC-X-Y sample were influenced by the activator amount and activation temperature. Among the CKC-X-Y samples, the CKC-900-3 sample displayed the highest surface area (1943 m(2)/g) and the largest pore volume (1.10 cm(3)/g), whereas the CKC-900-4 sample possessed the highest amount (45.5 %) of oxygen functional groups. The CKC-900-4 sample exhibited the largest CO2 adsorption capacity (3.63 mmol/g at 25 degrees C) among all of the CKC-X-Y samples. The results indicate that the activated corn-derived porous biochar with a high surface area and a high oxygen functional groups amount possessed a large CO2 uptake. In addition, the CKC-X-Y samples showed high CO2/N-2 selectivity, good recyclability, and easy regeneration behavior. The adsorption of CO2 was physically and chemically adsorbed on the surface of the CKC-X-Y samples, with the physical adsorption being dominant. In which CO2 was mainly chemically adsorbed on the samples with hydroxyl groups.
Keyword ：
Carbon dioixde uptake Carbon dioixde uptake Corn kernel-derived porous carbon Corn kernel-derived porous carbon Adsorption kinetics Adsorption kinetics Oxygen functional group Oxygen functional group Adsorption mechanism Adsorption mechanism
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| GB/T 7714 | Wu, Runping , Ye, Qing , Wu, Kai et al. Highly efficient CO2 adsorption of corn kernel-derived porous carbon with abundant oxygen functional groups [J]. | JOURNAL OF CO2 UTILIZATION , 2021 , 51 . |
| MLA | Wu, Runping et al. "Highly efficient CO2 adsorption of corn kernel-derived porous carbon with abundant oxygen functional groups" . | JOURNAL OF CO2 UTILIZATION 51 (2021) . |
| APA | Wu, Runping , Ye, Qing , Wu, Kai , Wang, Lanyang , Dai, Hongxing . Highly efficient CO2 adsorption of corn kernel-derived porous carbon with abundant oxygen functional groups . | JOURNAL OF CO2 UTILIZATION , 2021 , 51 . |
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Abstract ：
To improve the removal capacity of NO + O2 effectively, the alkaline earth metal-doped order mesoporous carbon (A-C-FDU-15(0.001) (A = Mg, Ca, Sr and Ba)) and Mg-C-FDU-15(x) (x = 0.001−0.003) samples were prepared, and their physicochemical and NO + O2 adsorption properties were determined by means of various techniques. The results show that the sequence in (NO + O2) adsorption performance was as follows: Mg-C-FDU-15(0.001) (93.2 mg/g) > Ca-C-FDU-15(0.001) (82.2 mg/g) > Sr-C-FDU-15(0.001) (76.1 mg/g) > Ba-C-FDU-15(0.001) (72.9 mg/g) > C-FDU-15 (67.1 mg/g). Among all of the A-C-FDU-15(0.001) samples, Mg-C-FDU-15(0.001) possessed the highest (NO + O2) adsorption capacity (106.2 mg/g). The species of alkaline earth metals and basic sites were important factors determining the adsorption of NO + O2 on the A-C-FDU-15(x) samples, and (NO + O2) adsorption on the samples was mainly chemical adsorption. Combined with the results of (NO + O2)-temperature-programmed desorption ((NO + O2)-TPD) and in situ diffused reflectance infrared Fourier transform spectroscopy (DRIFTS) characterization, we deduced that there were two main pathways of (NO + O2) adsorption: one was first the conversion of NO and O2 to NO2 and then part of NO2 was converted to NO2− and NO3−; and the other was the direct oxidation of NO to NO2− and NO3−. © 2020
Keyword ：
Physicochemical properties Physicochemical properties Temperature programmed desorption Temperature programmed desorption Alkaline earth metals Alkaline earth metals Adsorption Adsorption Temperature Temperature Fourier transform infrared spectroscopy Fourier transform infrared spectroscopy Nitrogen oxides Nitrogen oxides Alkalinity Alkalinity
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| GB/T 7714 | Wu, Runping , Ye, Qing , Wu, Kai et al. Low-temperature (NO + O2) adsorption performance of alkaline earth metal-doped C-FDU-15 [J]. | Journal of Environmental Sciences (China) , 2021 , 103 : 172-184 . |
| MLA | Wu, Runping et al. "Low-temperature (NO + O2) adsorption performance of alkaline earth metal-doped C-FDU-15" . | Journal of Environmental Sciences (China) 103 (2021) : 172-184 . |
| APA | Wu, Runping , Ye, Qing , Wu, Kai , Dai, Hongxing . Low-temperature (NO + O2) adsorption performance of alkaline earth metal-doped C-FDU-15 . | Journal of Environmental Sciences (China) , 2021 , 103 , 172-184 . |
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Abstract ：
The composite of gold nanoparticles-graphene oxide (AuNPs-GO) was prepared and characterized by transmission electron microscope (TEM) and ultraviolet-visible(UV-vis) spectrophotometry, respectively. The composite was modified on the surface of a glassy carbon electrode (GCE). The mercapto-modified and guanine-rich DNA strand (T30695) was self-assembled on to gold nanoparticles on the surface of the electrode via Au-S bond. T30695 could combine with lead ions (Pb2+) to form a stable parallel G-quadruplex. The G-quadruplex further combined with hemin to form DNAzyme with peroxidase activity. On the basis of this, DNAzyme electrochemical sensor Pb2+ detection was prepared. The DNAzyme could catalyze the oxidation reaction of hydrogen peroxidetowardshydroquinone (HQ) to achieve the amplification of electrochemical signal and highly sensitive detection of Pb2+. Under the optimum conditions, the peak current of square-wave voltammetry (SWV) was linearly dependent on the logarithm of Pb2+ concentration ranging from 5. 0 x10(-9) mol/L to 1. 0 x10(-6) mol/L with a detection limit of 1. 0 x10(-9) mol/L (S/N = 3). The recovery of Pb2+ in real water sample was 96% -105%. The sensor possessed good reproducibility, stability and selectivity to Pb2+.
Keyword ：
Lead ion (II) Lead ion (II) Sensor Sensor DNAzyme DNAzyme Square-wave voltammetry Square-wave voltammetry
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| GB/T 7714 | Yang Rui , Fang Tian-Fang , Lu Li-Ping et al. Highly Sensitive Detection of Pb2+ Based on DNAzyme/AuNPs-GO Sensor by Square-Wave Voltammetry [J]. | CHINESE JOURNAL OF ANALYTICAL CHEMISTRY , 2021 , 49 (2) : 309-317 . |
| MLA | Yang Rui et al. "Highly Sensitive Detection of Pb2+ Based on DNAzyme/AuNPs-GO Sensor by Square-Wave Voltammetry" . | CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 49 . 2 (2021) : 309-317 . |
| APA | Yang Rui , Fang Tian-Fang , Lu Li-Ping , Ye Qing . Highly Sensitive Detection of Pb2+ Based on DNAzyme/AuNPs-GO Sensor by Square-Wave Voltammetry . | CHINESE JOURNAL OF ANALYTICAL CHEMISTRY , 2021 , 49 (2) , 309-317 . |
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