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Xie Q, Lei C, Chen W, Huang B. Mesoporous ferrihydrite-supported Pd nanoparticles for enhanced catalytic dehalogenation of chlorinated environmental pollutant. J Colloid Interface Sci 2022; 608:2907-2920. [PMID: 34839921 DOI: 10.1016/j.jcis.2021.11.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/21/2021] [Accepted: 11/06/2021] [Indexed: 01/11/2023]
Abstract
Organic chlorides are a group of ubiquitous environmental pollutants that have attracted wide attention because of their carcinogenetic effect on human. Catalytic hydrodechlorination represents one of the most promising methods for the removal of these contaminants, but it suffers from drawbacks such as catalytic inefficiency and/or instability, and the danger of using H2 as hydrogen source. The relationship between the catalyst structure and its dehalogenation activity has not been completely understood. By combining the advantages of Pd nanocatalyst and mesoporous ferrihydrite (Fh) with its distinctive structure, here we present a new composite material with Pd nanoparticles (NPs) supported onto the Fh (Pd/Fh), which has excellent catalytic dehalogenation performance with a rapid, complete dechlorination of chlorophenol (turnover frequency 25.2 min-1) and the ability to perform well over a wide range of pH and temperature. The superior catalytic property of Pd/Fh can be attributed to the three unique functions of Fh, including: 1) having abundant hydroxyl groups that provide interaction sites with metals for incorporating highly dispersed small Pd NPs; 2) facilitating the fast adsorption of chlorophenol onto the catalyst surface via hydrogen bonding and importantly, 3) working as an electron mediator to greatly enhance the electron transfer from iron or chemicals (e.g., NaBH4) to the catalyst, thereby achieving a synergistic effect between Pd catalyst and support, and an enhanced dechlorination activity. In essence, this work presents a promising catalyst for the efficient dehalogenation of chlorinated environmental pollutants and provides an insight into the relationship between catalyst structure and dehalogenation activity.
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Affiliation(s)
- Qianqian Xie
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Chao Lei
- School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, PR China
| | - Wenqian Chen
- Department of Pharmacy, National University of Singapore, S9, 4 Science Drive 2, Singapore 117544, Singapore
| | - Binbin Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
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2
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Sanni SE, Philemon O, Okoro EE, Oni BA, Idowu TA, Adegbite O. Heterogeneous catalytic conversion of 4-chlorophenol via atomic hydrogen substitution induced by size-controlled polydisperse nanocobalt. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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4
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Highly efficient hydrotalcite supported palladium catalyst for hydrodechlorination of 1, 2, 4-tri chlorobenzene: Influence of Pd loading. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-1743-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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DFNS/α-CD/Au as a Nanocatalyst for Interpolation of CO2 into Aryl Alkynes Followed by SN2 Coupling with Allylic Chlorides. Catal Letters 2020. [DOI: 10.1007/s10562-020-03451-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Reductive degradation of 2,4-dichlorophenoxyacetic acid using Pd/carbon with bifunctional mechanism. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Lan L, Liu Y, Liu S, Ma X, Li X, Dong Z, Xia C. Effect of the supports on catalytic activity of Pd catalysts for liquid-phase hydrodechlorination/hydrogenation reaction. ENVIRONMENTAL TECHNOLOGY 2019; 40:1615-1623. [PMID: 29319422 DOI: 10.1080/09593330.2018.1426645] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/08/2018] [Indexed: 06/07/2023]
Abstract
Carbon nanotubes (CNTs), activated carbon (AC), graphene, and aluminum oxide (Al2O3) supported 5% Pd catalysts were prepared by the conventional impregnation method, and catalytic activity was tested in the hydrogenation of 4-chlorophenol (4-CP) and nitrobenzene (NB) under ambient conditions (313 K and atmospheric pressure). It was found that catalytic activity was greatly affected by the supports. Moreover, Pd/CNTs catalyst exhibited much higher catalytic activity than the other three supported Pd catalysts. The mechanism of this phenomenon was studied through catalyst characterization (ICP-MS, Brunauer-Emmett-Teller [BET], TEM, and SEM). It was found that the mean particle size of Pd nanoparticles for Pd/CNTs (4.3 nm) was smaller than that for Pd/AC (6.9 nm), Pd/Al2O3 (5.0 nm), and Pd/graphene (5.2 nm). Moreover, the actual loading amounts of Pd and BET surface areas were not the main reasons for the different catalytic activity of the four supported Pd catalysts. Above all, the smaller Pd particles of Pd/CNTs enabled the Pd/CNTs catalyst to exhibit much higher catalytic activity for the hydrogenation reactions.
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Affiliation(s)
- Lijuan Lan
- a School of Environment and Materials Engineering , Yantai University , Yantai , People's Republic of China
| | - Ying Liu
- b School of Resources and Environmental Engineering , Ludong University , Yantai , People's Republic of China
| | - Sujing Liu
- b School of Resources and Environmental Engineering , Ludong University , Yantai , People's Republic of China
| | - Xuanxuan Ma
- b School of Resources and Environmental Engineering , Ludong University , Yantai , People's Republic of China
| | - Xiaoqiang Li
- a School of Environment and Materials Engineering , Yantai University , Yantai , People's Republic of China
| | - Zhicheng Dong
- b School of Resources and Environmental Engineering , Ludong University , Yantai , People's Republic of China
| | - Chuanhai Xia
- b School of Resources and Environmental Engineering , Ludong University , Yantai , People's Republic of China
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8
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Biswas K, Chattopadhyay S, Jing Y, Che R, De G, Basu B, Zhao D. Polyionic Resin Supported Pd/Fe2O3Nanohybrids for Catalytic Hydrodehalogenation: Improved and Versatile Remediation for Toxic Pollutants. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b04464] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kinkar Biswas
- Department of Chemistry, North Bengal University, Darjeeling 734013, India
| | - Shreyasi Chattopadhyay
- CSIR−Central Glass & Ceramics Research Institute, 196 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Yunke Jing
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
| | - Renchao Che
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
| | - Goutam De
- CSIR−Central Glass & Ceramics Research Institute, 196 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
- Institute of Nano Science and Technology, Mohali 166062, Punjab, India
| | - Basudeb Basu
- Department of Chemistry, North Bengal University, Darjeeling 734013, India
- Raiganj University, Raiganj 733134, India
| | - Dongyuan Zhao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers and Advanced Materials Laboratory, Fudan University, Shanghai 200433, P. R. China
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9
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Zahedifar M, Es-haghi A, Zhiani R, Sadeghzadeh SM. Synthesis of benzimidazolones by immobilized gold nanoparticles on chitosan extracted from shrimp shells supported on fibrous phosphosilicate. RSC Adv 2019; 9:6494-6501. [PMID: 35518508 PMCID: PMC9060964 DOI: 10.1039/c9ra00481e] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 02/13/2019] [Indexed: 01/03/2023] Open
Abstract
We demonstrate the synthesis of benzimidazolones from o-phenylenediamines and CO2 in the presence of gold nanoparticles supported on a composite material based on microcrystalline chitosan from shrimp shells and fibrous phosphosilicate.
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Affiliation(s)
| | - Ali Es-haghi
- Department of Biology
- Islamic Azad University, Mashhad Branch
- Mashhad
- Iran
| | - Rahele Zhiani
- New Materials Technology and Processing Research Center
- Department of Chemistry
- Islamic Azad University, Neyshabur Branch
- Neyshabur
- Iran
| | - Seyed Mohsen Sadeghzadeh
- New Materials Technology and Processing Research Center
- Department of Chemistry
- Islamic Azad University, Neyshabur Branch
- Neyshabur
- Iran
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10
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Parrish KA, King M, Ligare MR, Johnson GE, Hernández H. Role of sterics in phosphine-ligated gold clusters. Phys Chem Chem Phys 2019; 21:1689-1699. [DOI: 10.1039/c8cp04961k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study examined the solution-phase exchange reactions of triphenylphosphine (PPh3) ligands on Au8L72+ (L = PPh3) gold clusters with three different tolyl ligands using electrospray ionization mass spectrometry to provide insight into how steric differences in the phosphines influence the extent of ligand exchange and the stability of the resulting mixed-phosphine clusters.
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Affiliation(s)
| | - Mary King
- Department of Chemistry
- University of Texas at Austin
- Austin
- USA
| | - Marshall R. Ligare
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Grant E. Johnson
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland
- USA
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11
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Zohreh N, Hosseini SH, Jahani M, Xaba MS, Meijboom R. Stabilization of Au NPs on symmetrical tridentate NNN-Pincer ligand grafted on magnetic support as water dispersible and recyclable catalyst for coupling reaction of terminal alkyne. J Catal 2017. [DOI: 10.1016/j.jcat.2017.10.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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12
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Cui X, Zheng Y, Tian M, Dong Z. Palladium nanoparticles supported on SiO 2 @Fe 3 O 4 @m-MnO 2 mesoporous microspheres as a highly efficient and recyclable catalyst for hydrodechlorination of 2,4-dichlorophenol and reduction of nitroaromatic compounds and organic dyes. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.02.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Evaluation of Base for Catalytic Hydrodechlorination of 2,4-Dichlorophenol in Cocurrent Downflow Contactor Reactor. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-016-2300-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Chistyakov A, Zharova P, Nikolaev S, Tsodikov M. Direct Au-Ni/Al 2 O 3 catalysed cross-condensation of ethanol with isopropanol into pentanol-2. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Highly efficient and recyclable Ni MOF-derived N-doped magnetic mesoporous carbon-supported palladium catalysts for the hydrodechlorination of chlorophenols. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.07.041] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Ma X, Liu S, Liu Y, Gu G, Xia C. Comparative study on catalytic hydrodehalogenation of halogenated aromatic compounds over Pd/C and Raney Ni catalysts. Sci Rep 2016; 6:25068. [PMID: 27113406 PMCID: PMC4844995 DOI: 10.1038/srep25068] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
Catalytic hydrodehalogenation (HDH) has proved to be an efficient approach to dispose halogenated aromatic compounds (HACs). Liquid-phase HDH of single and mixed halobenzenes/4-halophenols with H2 over 5% Pd/C and Raney Ni catalyst are investigated and compared. For liquid-phase HDH of single HACs, hydrogenolytic scission reactivity of C-X bonds decreases in order of C-Br > C-Cl > C-I > C-F over Pd/C catalyst, and in order of C-I > C-Br > C-Cl > C-F over Raney Ni catalyst. To clarify the reason why hydrogenolytic scission reactivity of C-X bonds over Pd/C and Raney Ni catalysts exhibits different trends, liquid-phase HDH of mixed HACs over Pd/C and Raney Ni catalysts were studied, and catalysts are characterized by SEM, EDX, and XRD techniques. It was found that the high adsorption of iodoarenes on Pd/C catalyst caused the HDH reactivity of iodoarenes to be lower than that of chloroarenes and bromoarenes in the HDH of single HACs. Moreover, the adsorption of in situ produced iodine ion (I−) to catalyst surface would result in the decline of catalytic activity, which might be the main reason why the HDH reactivity of HACs in the presence of NaI is rather low.
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Affiliation(s)
- Xuanxuan Ma
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Sujing Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Ying Liu
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Guodong Gu
- Alliance Pharma, Inc. 17 Lee Boulevard Malvern, PA 19355, USA
| | - Chuanhai Xia
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
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17
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Xue Z, Zhao X, Wang J, Mu T. Transfer hydrodehalogenation of aryl halides accelerated by a saturated sodium acetate aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra24559e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A saturated sodium acetate aqueous solution could be applied as an efficient and environmentally-friendly reaction medium to accelerate transfer hydrodehalogenation of various aryl halides.
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Affiliation(s)
- Zhimin Xue
- Beijing Key Laboratory of Lignocellulosic Chemistry
- College of Materials Science and Technology
- Beijing Forestry University
- Beijing 100083
- China
| | - Xinhui Zhao
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Jinfang Wang
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
| | - Tiancheng Mu
- Department of Chemistry
- Renmin University of China
- Beijing 100872
- China
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18
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Gao W, Zhang Y, Zhang X, Duan Z, Wang Y, Qin C, Hu X, Wang H, Chang S. Permeable reactive barrier of coarse sand-supported zero valent iron for the removal of 2,4-dichlorophenol in groundwater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:16889-16896. [PMID: 26104904 DOI: 10.1007/s11356-015-4912-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 06/16/2015] [Indexed: 06/04/2023]
Abstract
In this study, coarse sand-supported zero valent iron (ZVI) composite was synthesized by adding sodium alginate to immobilize. Composite was detected by scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray fluorescence (XRF). SEM results showed that composite had core-shell structure and a wide porous distribution pattern. The synthesized composite was used for degradation of 2,4-dichlorophenol (2,4-DCP) contamination in groundwater. Experimental results demonstrated that degradation mechanism of 2,4-DCP using coarse sand-supported ZVI included adsorption, desorption, and dechlorination. 2,4-DCP adsorption was described as pseudo-second-order kinetic model. It was concluded that dechlorination was the key reaction pathway, ZVI and hydrogen are prime reductants in dechlorination of 2,4-DCP using ZVI.
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Affiliation(s)
- Weichun Gao
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Yongxiang Zhang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Xiaoye Zhang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Zhilong Duan
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Youhao Wang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Can Qin
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Xiao Hu
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Hao Wang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Shan Chang
- Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
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19
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Śrębowata A, Zielińska I, Baran R, Słowik G, Dzwigaj S. Ag–Ni bimetallic SiBEA zeolite as an efficient catalyst of hydrodechlorination of 1,2-dichloroethane towards ethylene. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.06.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Grishin MV, Gatin AK, Dokhlikova NV, Kirsankin AA, Kulak AI, Nikolaev SA, Shub BR. Adsorption and interaction of hydrogen and oxygen on the surface of separate crystalline gold nanoparticles. KINETICS AND CATALYSIS 2015. [DOI: 10.1134/s0023158415040084] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Shimizu K, Nyström J, Geladi P, Lindholm-Sethson B, Boily JF. Electrolyte ion adsorption and charge blocking effect at the hematite/aqueous solution interface: an electrochemical impedance study using multivariate data analysis. Phys Chem Chem Phys 2015; 17:11560-8. [PMID: 25857599 DOI: 10.1039/c4cp05927a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A model-free multivariate analysis using singular value decomposition is employed to refine an equivalent electrical circuit model in order to probe the electrochemical properties of the hematite/water interface in dilute NaCl and NH4Cl solutions using electrochemical impedance spectroscopy. The result shows that the surface protonation is directly related to the mobility and trapping of charge carriers at the mineral surface. Moreover, the point of zero charge can be found at pH where the charge transfer resistance is the highest, in addition to the minimum double layer capacitance. The inner-sphere interaction of the NH4(+) ion with the surface is indicated by an increase of capacitance for charge carrier trapping from the protonated surface as well as lower double layer capacitance and open circuit potential. It is clear that the intrinsic electrochemical activity of hematite depends on the degree of surface (de)protonation and other inner-sphere adsorption, as these processes affect the charge carrier density in the surface state. This work also highlights an important synergistic effect of the two spectral analyses that enables EIS to be utilized in an in-depth investigation of mineral/water interfaces.
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Affiliation(s)
- K Shimizu
- Department of Chemistry, Umeå University, 90187, Umeå, Sweden.
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22
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Jiang F, Tan W, Chen H, Tan L, Liu J. Effective catalytic hydrodechlorination of chlorophenoxyacetic acids over Pd/graphitic carbon nitride. RSC Adv 2015. [DOI: 10.1039/c5ra07913f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Catalytic hydrodechlorination (HDC) of chlorophenoxyacetic acids was performed over Pd/graphitic carbon nitride (Pd/g-C3N4) catalysts in the present work.
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Affiliation(s)
- Fang Jiang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Wenhui Tan
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Huan Chen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Ling Tan
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- China
| | - Jingliang Liu
- School of Biochemical Environmental and Engineering
- Nanjing XiaoZhuang University
- Nanjing 211171
- China
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23
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Zhang L, Zhou X, Huo H, li W, Li F, Li R. Palladium encapsulated within magnetic hollow mesoporous TiO2 spheres (Pd/Fe3O4@hTiO2) as a highly efficient and recyclable catalysts for hydrodechlorination of chlorophenols. RSC Adv 2015. [DOI: 10.1039/c5ra07765f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, we introduced a method to encapsulate Pd(0) within TiO2 hollow mesoporous nanostructures.
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Affiliation(s)
- Le Zhang
- Department of Chemical Engineering
- Jiuquan College of Vocational Technology
- Jiuquan
- China
- College of Chemistry and Chemical Engineering Lanzhou University
| | - Xingchun Zhou
- College of Chemistry and Chemical Engineering Lanzhou University
- The Key Laboratory of Catalytic engineering of Gansu Province
- Lanzhou
- China
| | - Hongfei Huo
- College of Chemistry and Chemical Engineering Lanzhou University
- The Key Laboratory of Catalytic engineering of Gansu Province
- Lanzhou
- China
| | - Wenzhu li
- College of Chemistry and Chemical Engineering Lanzhou University
- The Key Laboratory of Catalytic engineering of Gansu Province
- Lanzhou
- China
| | - Feng Li
- College of Chemistry and Chemical Engineering Lanzhou University
- The Key Laboratory of Catalytic engineering of Gansu Province
- Lanzhou
- China
| | - Rong Li
- College of Chemistry and Chemical Engineering Lanzhou University
- The Key Laboratory of Catalytic engineering of Gansu Province
- Lanzhou
- China
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24
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Le X, Dong Z, Zhang W, Li X, Ma J. Fibrous nano-silica containing immobilized Ni@Au core–shell nanoparticles: A highly active and reusable catalyst for the reduction of 4-nitrophenol and 2-nitroaniline. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.08.002] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Nasser A, Mingelgrin U. Birnessite-induced mechanochemical degradation of 2,4-dichlorophenol. CHEMOSPHERE 2014; 107:175-179. [PMID: 24342359 DOI: 10.1016/j.chemosphere.2013.11.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 11/21/2013] [Accepted: 11/22/2013] [Indexed: 06/03/2023]
Abstract
DCP (2,4-dichlorophenol) is the key-intermediate in the synthesis of some widely used pesticides and is an EPA priority pollutant. The mechanochemical breakdown of DCP loaded on birnessite (δ-MnO2), montmorillonite saturated with Na(+) or Cu(2+) and hematite was investigated. Mechanical force was applied by grinding of mixtures of DCP and the minerals, using mortar and pestle. Grinding of DCP for 5 min with the montmorillonites or with hematite resulted in negligible degradation during grinding, while grinding with birnessite induced the immediate degradation of 90% of the loaded DCP. Incubation for 24h after grinding did result in up to 30% degradation of the DCP loaded on the other minerals tested. HPLC and LC-MS analysis revealed that the transformation of DCP yielded oligomerization products as well as partial dechlorination. DCP degradation on birnessite was accompanied with a substantial increase in the extractability of manganese from the mineral into an acidic aqueous solution, indicating that Mn(IV) in the mineral transformed into Mn(II) and that birnessite served as an electron acceptor in the transformation. The oligomerization and partial dechlorination brought about by grinding, suggest a reduction in bioavailability and toxicity.
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Affiliation(s)
- A Nasser
- Institute of Soils, Water and Environmental Sciences, ARO, Volcani Center, POB 6, Bet Dagan 50-250, Israel.
| | - U Mingelgrin
- Institute of Soils, Water and Environmental Sciences, ARO, Volcani Center, POB 6, Bet Dagan 50-250, Israel
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