DYES AND PIGMENTS
·
2017
·
IF 3.473
H.C. Ma,Z.M. Yang,H.Y. Cao,L. Lei,Z.Q. Lei
The development of CO 2 -active fluorescent sensors is paramount to the climate assessment. And also, because of the biological and environmental importance, trace detection F − is a great challenge task but very necessary for human daily life. This paper presented a water-soluble fluorescent sensor fabricated by triphenylamine derivative of NBTA 3− and quaternary ammonium salt (CTAC), which was further explored as a green and multi-functional sensing platform, and demonstrated excellent CO 2 response ability and trace amount of F − recognition with obvious visualized exhibitions. Especially, our research result has potential application in the CO 2 sensing by contact and vapor modes. Both of techniques exhibited reliable and sensitive and quick CO 2 sensing capability. We hope our research result is of real-time monitoring CO 2 in our surroundings.
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高影响因子
SYNTHESIS-STUTTGART
·
2018
·Vol. 51
·期 03
·739-746
·
IF 2.722
Qing-Wen Song,Qing-Ning Zhao,Jing-Yuan Li,Kan Zhang,Ping Liu
It is promising and challenging to achieve the effective construction of carbonates using CO2 and a non-noble metal catalyst. Herein, selective catalytic conversion of CO2 and switchable alcohol candidates to produce linear or cyclic carbonates and α-hydroxy ketones via effective zinc catalyst was developed. A series of primary alcohols and cyclohexanol, 1,2-diols, and water can serve as nucleophiles to give alkyl or aryl 2-substituted-3-oxobutan-2-yl carbonates, substituted 1,3-dioxolan-2-ones, 3-substituted 3-hydroxybutan-2-ones, respectively with excellent selectivity and high yields.
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高影响因子
Frontiers of Chemical Science and Engineering
·
2013
·Vol. 7
·期 3
·297-302
·
IF 0
Xiao Qiang,Tang Xiaodan,Liu Yefeng,Zhong Yijun,Zhu Weidong
A comparison study has been conducted on the strategies for synthesizing nanocrystalline Li 2 ZrO 3 and Kdoped Li 2 ZrO 3 absorbents for CO 2 capture at high temperatures, including solid-state and liquid-phase methods, citrate route, and starch-assisted sol-gel method combined with freeze-drying technique. The absorption properties, including uptake rate and absorption capacity, of synthesized absorbents were investigated by thermogravimetric analysis (TGA) at different CO 2 partial pressures. The nanosized Li 2 ZrO 3 crystals synthesized by the citrate route exhibit a faster uptake and a higher, nearly stoichiometric absorption capacity than those synthesized by the solid-state and liquid-phase methods. The doping of K into Li 2 ZrO 3 can significantly improve the uptake rate of CO 2 , especially at low CO 2 partial pressures. For the synthesis of K-doped Li 2 ZrO 3 , the citrate route has poor reproducibility and scalability, whereas the starch-assisted sol-gel method combined with freeze-drying technique is reproducible and easily scaled up, and the thus synthesized absorbents possess excellent CO 2 capture properties.
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DOI
CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 68
·e202202044
·
IF 5.02
Hanghang Zhou,Ying Luo,Jun Xu,Lidan Deng,Zheng Wang,Hong He
Graphical The well-defined CaTaO 2 N single crystals with uniform particle size were successfully synthesized through a one-pot NaCl-assisted nitridation procedure. The performance of photocatalytic CO 2 reduction to CO by H 2 O under visible light was enhanced due to the high crystallinity of CaTaO 2 N and the modification with core-shell structured Ni−Ag bicomponent cocatalyst. Cubic-like CaTaO 2 N photocatalysts with high crystallinity and uniform particle size were successfully prepared by the flux-assisted nitridation method. The growth of CaTaO 2 N single crystals under different synthesis conditions was systematically investigated to understand the effects of the crystallinity and optical property on photocatalytic performance of CO 2 reduction. Moreover, the modification of CaTaO 2 N single crystals with core-shell Ni−Ag bicomponent cocatalyst by two-step decoration process gave a 2.4 times higher amount of CO evolution than the deposition of sole Ag cocatalyst, because of the synergistic effects of bicomponent cocatalyst on the interfacial electron transfer and surface catalytic process. This study provides a valuable way to construct high-crystalline photocatalysts with effective bicomponent cocatalyst for visible-light-driven CO 2 reduction with H 2 O.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Hongyu Chen,Zhaojie Wang,Xiaofei Wei,Siyuan Liu,Peng Guo,Peng Han,Haowei Wang,Jinbao Zhang,Xiaoqing Lu,Baojun Wei
Electrochemical reduction of CO 2 to C 2+ products is a sustainable energy-driven pursuit for high added-value hydrocarbons. Tremendous efforts have been made to copper based electrocatalysts, which are well-known for producing C 2+ products. However, being short of well-defined catalysts with stable Cu δ+ electronic structure hinders its practical application and in-depth understanding. Herein, we developed a facile one-pot approach to prepare Cu δ+ -rich catalyst by doping phosphorus. Enhanced performance and tunable product selectivities are achieved due to the electron donor–acceptor interaction based on phosphorus content in series. C 2 hydrocarbons and alcohols are produced with high (~44.9%) selectivity, in which C 2 H 4 (30.7 ± 0.9%) is dominant at −1.6 V vs reversible hydrogen electrode (RHE). This P-Cu catalyst shows a significantly higher current density (57.2 mA cm −2 ) compared to pristine Cu. In addition, the favorable Cu δ+ is reserved during CO 2 RR contributing to a long-term stability. Experimental results and DFT calculations demonstrate that the Cu δ+ moiety facilitates the adsorption of carbon intermediates, C-C coupling and hence promotes the generation of C 2 H 4 energetically. The well-designed catalyst indicates the profit of electronic structure engineering in designing catalysts for multiple-step chemical conversions.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 51
·77536-77552
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IF 5.19
Xue Yun,Cheng Wanting,Cao Meng,Gao Jianzhang,Chen Jiaqi,Gui Yunyang,Zhu Wenmin,Ma Fuqiu
In this paper, nitric acid-modified activated carbon was used as an electrode in the electrosorption process for the removal of Co 2+ , Mn 2+ , and Ni 2+ from wastewater. The effects of applied voltage, initial pH, and coexisting ions on removal efficiency were investigated. The adsorption process was evaluated by adsorption isotherm models. The results indicated that the electrosorption process was consistent with the Langmuir model, proving that the electrosorption process was a monolayer adsorption process. The maximum adsorption capacities of Co 2+ , Mn 2+ , and Ni 2+ were 131.58 mg/g, 102.04 mg/g, and 103.09 mg/g. Electrochemical tests revealed that the specific capacitance of AC-HNO 3 was 54.11 F/g when the scanning rate was 5 mV/s, while the specific capacitance of AC was 36.51 F/g. The Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) confirmed that the content of oxygen groups on the surface of activated carbon increased after modification, which provided more adsorption sites for electrosorption. When the selected concentration of HCl was used as the eluent, the elution efficiency of Co 2+ , Mn 2+ , and Ni 2+ could reach 94.23%, 93.65%, and 90.61%. The removal efficiency could reach more than 95% after three cycles. The results of the study can be used as a reference significance for the removal of cobalt, manganese, and nickel ions from heavy metal wastewater by electrosorption.
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PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Kaixing Cai,Ping Liu,Tianxiang Zhao,Kai Su,Yi Yang,Duan-Jian Tao
The design and preparation of ionic liquids functionalized polymer materials is a trending topic in the fields of polymer science for CO 2 capture and utilization. In this work, a series of porous hyper-crosslinked ionic polymers (PIPs) with high surface area and abundant catalytic central units have been synthesized by a simple post-crosslinking of ionic liquid monomer and 4,4′-bis(chloromethyl)-1,1′-biphenyl. The prepared PIPs were used for CO 2 adsorption, and their adsorption capacity for CO 2 exceeded 100 mg g −1 at 273 K and 1.0 bar. Furthermore, the isotherm adsorption data of CO 2 were fitted respectively by Langmuir, Freundlich, Redlich-Peterson, and Toth isotherm models to calculate the thermodynamic parameters, including changes in Gibbs free energy (Δ G° ), enthalpy (Δ H° ), entropy (Δ S° ), and isosteric heat of adsorption (Δ H Isosteric ). It is concluded that the adsorption process of CO 2 on PIP is a spontaneous physical process. These PIP can also be used as heterogeneous catalysts for the cycloaddition of CO 2 with epoxides under metal/solvent/cocatalyst-free conditions. The excellent yields (up to 99%) of cyclic carbonates are ascribable to synergistic contributions of abundant microporous and active ionic catalytic centers. This study provides a new idea for developing functionalized ionic polymers that combine capture and conversion of CO 2 .
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jia Wang,Yinghui Xu,Hongqiang Qu,Haiyun Ma,Ran Chang,Jing Ma
Delicately regulating the distribution morphology of a filler is an effective strategy to promote the separation performance of mixed matrix membranes (MMMs). Herein, we describe a highly permeable metal–organic framework (MOF)-based MMM comprising vertically aligned ZIF-8 (V-ZIF-8) and polysulfone (PSF). The V-ZIF-8 is distributed uniformly within the PSF matrix. With this unique distribution morphology of ZIF-8, the shortest gas transport pathways are formed in the membrane. Meanwhile, the molecular-sieving pores of ZIF-8 can allow CO2 to pass through and crowding out N2. The obtained V-ZIF-8/PSF membrane shows a high CO2 permeability of 89.7 Barrer and a CO2/N2 selectivity of 30.0 that is stable over a period of 50 h. The CO2 permeability is enhanced about 11.8 times than that of the pure PSF membrane. The results prove that the vertically aligned distribution morphology of an MOF in a polymer matrix is an effective method to improve the separation performance of a membrane, providing a new concept for designing more advanced membranes.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2017
·
IF 6.035
Hui Li,Xiaoxu Ding,Yatao Zhang,Jindun Liu
The inherent defects of porous graphene (PG) formed during reduction etching process could serve as nanopores , making PG emerge a potential application for the preparation of micrometre-sized separation membranes . Here, we introduced PG as inorganic nanofiller to fabricate thin film nanocomposite (TFN) membranes for CO 2 capture via interfacial polymerization technique. The PG selective nanolayers not only possessed a good adhesion with polymers but also benefited from hydrogen bonding actions, simultaneously, thus ensuring the formation of high-efficiency molecular sieving passageway in the separation layer of membranes. Furthermore, the thin PG nanosheets were verified to have an significantly affect for permeability and selectivity of membranes (PG, 0.05 wt%, 1 bar), with exhibiting about 21% and 20.8% enhancement of the CO 2 permeance and the CO 2 /N 2 selectively compared to that of the membrane without PG separately. Simultaneously, the membrane also showed higher stability and the porous surface morphology of PG shortened greatly the gas transfer path. The approach offers a potential promising to exploit the ultra-thin film composite membrane for efficient gas separation.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Jingke Song,Zhe Zhang,Songsong Zhi,Bingxuan Niu,Han Dong,Dapeng Wu,Kai Jiang
Background Development of human society has led to various environmental problems and energy crisis. Methods In this paper, Bismuth oxychloride (BiOCl) with a 3D network structure was prepared via a simple one-step sodium dodecylbenzenesulfonate (SDBS) assisted hydrothermal method and used for CO 2 reduction and antibiotic degradation. Consideration was given to the influence of addition of SDBS in the preparation process on the microscopic morphology and energy band structure of the photocatalyst. Significant findings The results of the present study indicate that the formation of the 3D network structure helps to expose the {001} facets of BiOCl and promotes the generation of more oxygen vacancies. As-prepared BiOCl-0.6, i.e., 0.78 g of Bi(NO 3 ) 3 ·5H 2 O with 0.6 g SDBS, demonstrating the highest photocatalytic reduction performance of CO 2 . The production of CO by BiOCl-0.6 can reach 59.5 and 20.1 µmol g −1 after 4 h of UV-vis/vis illumination, which is ten times higher than the control BiOCl. In addition, BiOCl prepared with a 3D network structure also showed efficient antibiotic (oxytetracycline hydrochloride, OTC) degradation ability. When the initial concentration of OTC was 20 mg/L, OTC was completely removed after 45 min of UV-vis irradiation, and 77.2% of OTC was removed after 90 min of photocatalytic reaction under visible light. In the photodegradation process, photogenerated holes (h + ) and superoxide radical ( · O 2 − ) play an important role.
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高影响因子
Journal of CO2 Utilization
·
2016
·
IF 4.764
Xian-Dong Lang,Yi-Chen Yu,Zheng-Ming Li,Liang-Nian He
Despite recent renaissance of CO 2 chemistry, transformation of CO 2 at ambient conditions remains still of great challenge. In this work, an easily prepared protic ionic liquid e.g. 1,1,3,3-tetramethylguanidinium imidazolide [HTMG][Im] was developed as highly efficient, recyclable and bifunctional catalyst for the carboxylative cyclization of 2-aminobenzonitriles with CO 2 at atmospheric pressure and room temperature. The catalytic protocol was found to be applicable to various 2-aminobenzonitriles bearing electron-withdrawing or electron-donating substituents, affording the corresponding quinazoline-2,4(1H,3H)-diones in moderate to excellent yields. In addition, the catalyst could be conveniently recovered and reused for five cycles with almost consistent activity. Consequently, this process represents an alternative approach for the efficient and greener chemical fixation of CO 2 to afford valuable heterocycles.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Jiuli Han,Lu Bai,Haiyan Jiang,Shaojuan Zeng,Bingbing Yang,Yinge Bai,Xiangping Zhang
Ionic liquids (ILs) have become attractive in membranes for CO2 separation because of the designable structure, high CO2 affinity, and good compatibility and stability. Modification of metal–organic frameworks with ILs is an effective strategy to improve the gas separation performance of mixed matrix membranes (MMMs). In this work, task-specific ionic liquids (TSILs) were incorporated to prepare TSIL@ZIF-67/PIM-1 MMMs and improve CO2 separation performance because of the high CO2 solubility and great compatibility toward ZIF-67 and PIM-1. The TSILs (TMGHIM and TMGHPhO) selectively and reversibly interact with CO2 and improve the interfacial compatibility between ZIF-67 and PIM-1, leading to higher CO2/CH4 and CO2/N2 selectivities than that of the ZIF-67/PIM-1 MMM and the directly blended membrane (TSIL/ZIF-67/PIM-1). The 10 wt % TMGHIM@ZIF-67/PIM-1 MMM shows enhanced CO2/N2 and CO2/CH4 selectivities of 13.7 and 10.5, respectively; meanwhile, the CO2 permeability reaches 12,848.5 Barrer and is 2.5 times that of the pure PIM-1 membrane. The TSIL@ZIF-67/PIM-1 MMMs also show good stability against physical aging.
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高影响因子
危险品化学品经营许可证（带存储）