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Gong ZX, Steven M, Chen YT, Huo LZ, Xu H, Guo CF, Yang XJ, Wang YX, Luo XP. High adsorption to methylene blue based on Fe 3O 4-N-banana-peel biomass charcoal. RSC Adv 2024; 14:25619-25628. [PMID: 39148761 PMCID: PMC11325343 DOI: 10.1039/d4ra04973j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Accepted: 08/08/2024] [Indexed: 08/17/2024] Open
Abstract
This research focused on utilizing banana peel as the primary material for producing mesoporous biomass charcoal through one-step potassium hydroxide activation. Subsequently, the biomass charcoal underwent high-temperature calcination with varying impregnation ratios of KOH : BC for different durations in tubular furnaces set at different temperatures. The resultant biomass charcoal was then subjected to hydrothermal treatment with FeCl3·6H2O to produce biochar/iron oxide composites. The adsorption capabilities of these composites towards methylene blue (MB) were examined under various conditions, including pH (ranging from 3 to 12), temperature variations, and initial MB concentrations (ranging from 50 to 400 mg L-1). The adsorption behavior aligned with the Langmuir model and demonstrated quasi-secondary kinetics. After five adsorption cycles, the capacity decreased from 618.64 mg g-1 to 497.18 mg g-1, indicating considerable stability. Notably, Fe3O4-N-BC exhibited exceptional MB adsorption performance.
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Affiliation(s)
- Zhu-Xiang Gong
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Mfitumucunguzi Steven
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Yan-Ting Chen
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Li-Zhu Huo
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Hao Xu
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Chao-Fei Guo
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Xue-Juan Yang
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Yu-Xuan Wang
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
| | - Xi-Ping Luo
- College of Chemistry and Materials Engineering, Zhejiang A&F University Hangzhou 311300 China
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass Hangzhou 311300 China
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Guo Y, Li J, Xu Q, Song Z, Wang J, Han M, Chen L, Han N, Cheng W. TS-1@MCM-48 Core-Shell Catalysts for Efficient Oxidation of p-Diethylbenzene to High Value-Added Derivatives. Chemistry 2024; 30:e202303739. [PMID: 38287793 DOI: 10.1002/chem.202303739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/25/2023] [Accepted: 01/29/2024] [Indexed: 01/31/2024]
Abstract
To expand the market capacity of p-diethylbenzene (PDEB), core-shell zeolite (TS-1@MCM-48) is designed as a catalyst for PDEB oxidation. TS-1@MCM-48 catalyst is synthesized by in-situ crystallization method and characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption, in-situ electron paramagnetic resonance (EPR) and 29Si nuclear magnetic resonance (29Si MAS-NMR). Oxidation of PDEB by H2O2 was investigated systematically in liquid phase. The conversion of PDEB over TS-1@MCM-48 was 28.1 % and the total selectivity was 72.6 %, where the selectivity of EAP (p-ethylacetophenone) and EPEA (4-ethyl-α-methylbenzyl alcohol) was 28.6 % and 44.0 %, respectively. Compared with TS-1 and MCM-48 zeolite, the conversion rate of reactants and the selectivity of products have been significantly improved. The catalytic performance of TS-1@MCM-48 is derived from its well-crystallized microporous core and mesoporous shell with regular channels, which make active sites of TS-1 zeolite in the catalyst be fully utilized and mass transfer resistance be largely reduced. Further through theoretical calculation, we propose that the oxidation of PDEB is the result of the combination and mutual transformation of free radical process and carbocation process. Core-shell structure ensures the conversion rate of raw materials and improves the selectivity of products.
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Affiliation(s)
- Ying Guo
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Jinhong Li
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Qingxin Xu
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Zhimei Song
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Jinge Wang
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Mei Han
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Lidong Chen
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University, 110629, Dalian, Liaoning, PR China
| | - Na Han
- Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, 215123, Suzhou, PR China
| | - Weiguo Cheng
- Beijing Key Laboratory of Ionic Liquids Clean Process, Chinese Academy of Sciences, Institute of Process Engineering, 100190, Beijing, PR China
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Gao X, Luo B, Hong Y, He P, Zhang Z, Wu G. Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild conditions. Front Chem Sci Eng 2023. [DOI: 10.1007/s11705-022-2280-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Xing XX, Guo HL, Feng T, He TM, Zhu WS, Li HM, Pang JY, Bai Y, Dang DB. Design and Synthesis of Amphiphilic Catalyst [C 16mim] 5VW 12O 40Br and Its Application in Deep Desulfurization with Superior Cyclability at Room Temperature. Inorg Chem 2023; 62:5780-5790. [PMID: 36976898 DOI: 10.1021/acs.inorgchem.3c00376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Achieving long-term stable deep desulfurization at room temperature and recovering high value-added sulfone products is a challenge at present. Herein, a series of catalysts [Cnmim]5VW12O40Br (CnVW12, 1-alkyl-3-methylimidazolium bromide tungstovanadate, n = 4, 8, 16) were presented for the room temperature catalytic oxidation of dibenzothiophene (DBT) and its derivatives. Factors affecting the reaction process, such as the amount of catalyst, oxidant, and temperature, were systematically discussed. C16VW12 showed higher catalytic performance, and 100% conversion and selectivity could be achieved in 50 min with only 10 mg. The mechanism study showed that the hydroxyl radical was the active radical in the reaction. Benefiting from the "polarity strategy", the sulfone product accumulated after 23 cycles in a C16VW12 system, and the yield and purity were about 84% and 100%, respectively.
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Affiliation(s)
- Xiao-Xiao Xing
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Hui-Li Guo
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Tong Feng
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Tian-Meng He
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Wen-Shuai Zhu
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
- College of Chemical Engineering and Environment, State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, P. R. China
| | - Hua-Ming Li
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Jing-Yu Pang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Yan Bai
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Dong-Bin Dang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
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Protonated g-C 3N 4 coated Co 9S 8 heterojunction for photocatalytic H 2O 2 production. J Colloid Interface Sci 2022; 627:541-553. [PMID: 35870406 DOI: 10.1016/j.jcis.2022.07.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/24/2022]
Abstract
Photocatalytic H2O2 production is an eco-friendly technique because only H2O, molecular O2 and light are involved. However, it still confronts the challenges of the unsatisfactory productivity of H2O2 and the dependence on organic electron donors or high purity O2, which restrict the practical application. Herein, we construct a type-II heterojunction of the protonated g-C3N4 coated Co9S8 semiconductor for photocatalytic H2O2 production. The ultrathin g-C3N4 uniformly spreads on the surface of the dispersed Co9S8 nanosheets by a two-step method of protonation and dip-coating, and exhibits improved photogenerated electrons transportability and e--h+ pairs separation ability. The photocatalytic system can achieve a considerable productivity of H2O2 to 2.17 mM for 5 h in alkaline medium in the absence of the organic electron donors and pure O2. The optimal photocatalyst also obtains the highest apparent quantum yield (AQY) of 18.10% under 450 nm of light irradiation, as well as a good reusability. The contribution of the type-II heterojunction is that the migrations of electrons and holes within the interface between g-C3N4 and Co9S8 matrix promote the separation of photocarriers, and another channel is also opened for H2O2 generation. The accumulated electrons in conduction band (CB) of Co9S8 contribute to the major channel of two-electron reduction of O2 for H2O2 production. Meanwhile, the electrons in CB of g-C3N4 participate in the single electron reduction of O2 as an auxiliary channel to enhance the H2O2 production.
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Liang Y. Recent advanced development of metal-loaded mesoporous organosilicas as catalytic nanoreactors. NANOSCALE ADVANCES 2021; 3:6827-6868. [PMID: 36132354 PMCID: PMC9417426 DOI: 10.1039/d1na00488c] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/18/2021] [Indexed: 05/10/2023]
Abstract
Ordered periodic mesoporous organosilicas have been widely applied in adsorption/separation/sensor technologies and the fields of biomedicine/biotechnology as well as catalysis. Crucially, surface modification with functional groups and metal complexes or nanoparticle loading has ensured high efficacy and efficiency. This review will highlight the current state of design and catalytic application of transition metal-loaded mesoporous organosilica nanoreactors. It will outline prominent synthesis approaches for the grafting of metal complexes, metal salt adsorption and in situ preparation of metal nanoparticles, and summarize the catalytic performance of the resulting mesoporous organosilica hybrid materials. Finally, the potential prospects and challenges of metal-loaded mesoporous organosilica nanoreactors are addressed.
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Affiliation(s)
- Yucang Liang
- Anorganische Chemie, Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 Tübingen 72076 Germany +49 7071 292436
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