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Yang Y, Xu M, Jin W, Jin J, Dong F, Zhang Z, Yan X, Shao M, Wan Y. PANI/MCM-41 adsorption for removal of Cr(VI) ions and its application in enhancing electrokinetic remediation of Cr(VI)-contaminated soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:121684-121701. [PMID: 37953422 DOI: 10.1007/s11356-023-30751-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/25/2023] [Indexed: 11/14/2023]
Abstract
In this study, a polyaniline/mesoporous silica (PANI/MCM-41) composite material that can be used as a filler for permeable reactive barrier (PRB) was prepared by in situ polymerization. Firstly, the adsorption capacity of PANI/MCM-41 on Cr (VI) in solution was investigated. The results show that the prepared PANI/MCM-41 exhibits a significant Cr (VI) adsorption capacity (~ 340 mg/g), and the adsorption process is more accurately described by the Langmuir isotherm and pseudo-second-order kinetic model. The thermodynamic functions evidenced that the Cr(VI) adsorption was an endothermic spontaneous process. In addition, adsorption-desorption cycle experiments proved the excellent reusability of the material. Subsequently, the material was utilized as a filler in the PRB for the remediation of Cr(VI)-contaminated soil using electrokinetic-permeable reactive barrier (EK-PRB) technology. The results show that compared with traditional electrokinetic remediation, the use of PANI/MCM-41 as an active filler can enlarge the current during remediation and enhance the conductivity of soil, which increases the removal rates of total Cr and Cr(VI) in soil (17.4% and 10.2%).
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Affiliation(s)
- Yanzhi Yang
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Mingchen Xu
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Wenlou Jin
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Jiacheng Jin
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Fan Dong
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Zhipeng Zhang
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Xin Yan
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Min Shao
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China
| | - Yushan Wan
- School of Environmental Science and Engineering, Changzhou University, Changzhou, 213164, China.
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2
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Bhaduri B, Anand Omar R, Verma N. Synthesis of Internally Carbon-Sourced Carbon Nanofiber Forming Ni-Graphitic Carbon Nitride. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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3
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Preparation of S-Scheme g-C3N4/ZnO Heterojunction Composite for Highly Efficient Photocatalytic Destruction of Refractory Organic Pollutant. Catalysts 2023. [DOI: 10.3390/catal13030485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
In this study, graphitic carbon nitride (g-C3N4)-based ZnO heterostructure was synthesized using a facile calcination method with urea and zinc nitrate hexahydrate as the initiators. According to the scanning electron microscopic (SEM) images, spherical ZnO particles can be seen along the g-C3N4 nanosheets. Additionally, the X-ray diffraction (XRD) analysis reveals the successful synthesis of the g-C3N4/ZnO. The photocatalytic activity of the synthesized catalyst was tested for the decolorization of crystal violet (CV) as an organic refractory contaminant. The impacts of ZnO molar ratio, catalyst amount, CV concentration, and H2O2 concentration on CV degradation efficiency were investigated. The obtained outcomes conveyed that the ZnO molar ratio in the g-C3N4 played a prominent role in the degradation efficiency, in which the degradation efficiency reached 95.9% in the presence of 0.05 mmol of ZnO and 0.10 g/L of the catalyst in 10 mg/L of CV through 120 min under UV irradiation. Bare g-C3N4 was also tested for dye decolorization, and a 76.4% dye removal efficiency was obtained. The g-C3N4/ZnO was also tested for adsorption, and a 32.3% adsorption efficiency was obtained. Photocatalysis, in comparison to adsorption, had a dominant role in the decolorization of CV. Lastly, the results depicted no significant decrement in the CV degradation efficiency in the presence of the g-C3N4/ZnO photocatalyst after five consecutive runs.
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Ravichandran S, Bhuvanendran N, Selva Kumar R, Balla P, Lee SY, Xu Q, Su H. Polyhedron shaped palladium nanostructures embedded on MoO 2/PANI-g-C 3N 4 as high performance and durable electrocatalyst for oxygen reduction reaction. J Colloid Interface Sci 2023; 629:357-369. [PMID: 36162393 DOI: 10.1016/j.jcis.2022.09.077] [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: 08/03/2022] [Revised: 09/08/2022] [Accepted: 09/13/2022] [Indexed: 10/14/2022]
Abstract
A hybrid catalyst support anchoring a noble metal catalyst could be a promising material for building interfacial bonding between metallic nanostructures and polymer functionalized carbon supports to improve the kinetics of oxygen reduction reaction (ORR). This study successfully prepared a polyhedron nanostructured Pd and MoO2-embedded polyaniline-functionalized graphitized carbon nitride (PANI-g-C3N4) surface using a chemical reduction method. The Pd-Mo/PANI-g-C3N4 achieved an ORR activity of 0.27 mA µg-1 and 1.14 mA cm-2 at 0.85 V, which were 4.5 times higher than those of commercial 20% Pt/C catalyst (0.06 mA µg-1 and 0.14 mA cm-2). In addition, the Pd-Mo/PANI-g-C3N4 retained ∼ 77.5% of its initial mass activity after 10,000 cycles, with only 30 mV half-wave potential reduction. Further, the engineered potential active sites in the catalyst material verified the significant improvement in the ORR activity of the catalyst with increased life-time, and theoretical calculations revealed that the synergistic effect of the catalytic components enhanced the ORR kinetics of the active sites.
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Affiliation(s)
- Sabarinathan Ravichandran
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China; School of Material Science and Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | | | - R Selva Kumar
- Department of Chemistry, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India
| | - Putrakumar Balla
- Engineering Research Centre for Hydrogen Energy and New Materials, College of Rare Earths (CoRE), Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Sae Youn Lee
- Department of Energy & Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea
| | - Qian Xu
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Huaneng Su
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China.
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5
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Enhanced visible-light photocatalytic performance by PPy/CN composites for reduction of UO22+. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Rout DR, Jena HM. Batch and continuous studies on adsorptive removal of hexavalent chromium [Cr(
VI
)] using reduced graphene oxide. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dibya Ranjan Rout
- Department of Chemical Engineering National Institute of Technology Rourkela India
| | - Hara Mohan Jena
- Department of Chemical Engineering National Institute of Technology Rourkela India
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7
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Mamidi N, García RG, Martínez JDH, Briones CM, Martínez Ramos AM, Tamez MFL, Del Valle BG, Segura FJM. Recent Advances in Designing Fibrous Biomaterials for the Domain of Biomedical, Clinical, and Environmental Applications. ACS Biomater Sci Eng 2022; 8:3690-3716. [PMID: 36037103 DOI: 10.1021/acsbiomaterials.2c00786] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Unique properties and potential applications of nanofibers have emerged as innovative approaches and opportunities in the biomedical, healthcare, environmental, and biosensor fields. Electrospinning and centrifugal spinning strategies have gained considerable attention among all kinds of strategies to produce nanofibers. These techniques produce nanofibers with high porosity and surface area, adequate pore architecture, and diverse chemical compositions. The extraordinary characteristics of nanofibers have unveiled new gates in nanomedicine to establish innovative fiber-based formulations for biomedical use, healthcare, and a wide range of other applications. The present review aims to provide a comprehensive overview of nanofibers and their broad range of applications, including drug delivery, biomedical scaffolds, tissue/bone-tissue engineering, dental applications, and environmental remediation in a single place. The review begins with a brief introduction followed by potential applications of nanofibers. Finally, the future perspectives and current challenges of nanofibers are demonstrated. This review will help researchers to engineer more efficient multifunctional nanofibers with improved characteristics for their effective use in broad areas. We strongly believe this review is a reader's delight and will help in dealing with the fundamental principles and applications of nanofiber-based scaffolds. This review will assist students and a broad range of scientific communities to understand the significance of nanofibers in several domains of nanotechnology, nanomedicine, biotechnology, and environmental remediation, which will set a benchmark for further research.
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Affiliation(s)
- Narsimha Mamidi
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64849, Mexico
| | - Rubén Gutiérrez García
- Department of Chemical Engineering, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64988, Mexico
| | - José Daniel Hernández Martínez
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64849, Mexico
| | - Camila Martínez Briones
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64849, Mexico
| | - Andrea Michelle Martínez Ramos
- Department of Biotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64988, Mexico
| | - María Fernanda Leal Tamez
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64849, Mexico
| | - Braulio González Del Valle
- Department of Chemical Engineering, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64988, Mexico
| | - Francisco Javier Macias Segura
- Department of Chemistry and Nanotechnology, The School of Engineering and Science, Tecnologico de Monterrey, Monterrey, Nuevo Leon 64849, Mexico
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8
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Kang JY, Shi YP. Recent advances and application of carbon nitride framework materials in sample preparation. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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9
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Das HT, Dutta S, Beura R, Das N. Role of polyaniline in accomplishing a sustainable environment: recent trends in polyaniline for eradicating hazardous pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:49598-49631. [PMID: 35596869 DOI: 10.1007/s11356-022-20916-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/13/2022] [Indexed: 06/15/2023]
Abstract
Attaining a sustainable environment has become a prime area of research interest, as it is an utmost necessity for a healthy life. Hence, ample studies have been carried out in adopting different processes and utilizing various materials to attain the goal. Herein, we present an exclusive discussion on one such material, i.e., polyaniline (PANI) and its derivatives. Being an intrinsic conducting type, it has grabbed more attention due to its durability in different doped/un-doped states, promptness in structural alteration, and solution processability. This review presents an exhaustive discussion on published reports showing utilization of PANI and its derivative in various forms like pure and composites, for cleaning the environment through adsorption, photodegradation, etc., and the various methods adopted in order to achieve an optimum operating condition to obtain the maximum outcome. In addition to these merits and demerits, various technical challenges faced with materials have been also presented. Therefore, it is expected that this piece of work, presenting the exhaustive discussion on PANI and; its derivatives would help to develop a better understanding of this excellent conducting polymer PANI and provide a state of art on the role of this material for attaining sustainable surroundings for the living beings.
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Affiliation(s)
- Himadri Tanaya Das
- Centre of Excellence for Advance Materials and Applications, Utkal University, Bhubaneswar, Odisha, India.
| | - Swapnamoy Dutta
- CEITEC-Central European Institute of Technology, Brno University of Technology, 61200, Brno, Czech Republic
| | - Rosalin Beura
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Dwaraka, New Delhi, India
| | - Nigamananda Das
- Centre of Excellence for Advance Materials and Applications, Utkal University, Bhubaneswar, Odisha, India.
- Department of Chemistry, Utkal University, Bhubaneswar, Odisha, India.
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10
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Environment Friendly g-C3N4-Based Catalysts and Their Recent Strategy in Organic Transformations. HIGH ENERGY CHEMISTRY 2022. [PMCID: PMC8960706 DOI: 10.1134/s0018143922020102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Organic molecules synthesized in an environmentally friendly manner have excellent therapeutic potential. The entire preparation technique was examined in the existence of a light source, implying that light has been replaced by heating and the usage of dangerous chemicals has decreased, resulting in less pollution of the environment. The advantages of these nanocarbon catalysts include high efficiency, environmentally friendly synthesis, eco-friendly, inexpensive, and non-corrodible. In organic transformations, solid metal base/metal-free catalysts produce better results. Here, the metal-free semiconductor g-C3N4 was used to demonstrate the catalytic behavior of organic conversions. g-C3N4 is a two-dimensional material and a p‑type semiconductor to enhance the photocatalytic activity. The excellent properties of g-C3N4 sheet lead to the support of metals to form metal-organic frameworks. Most of the reactions gained positive response under visible light irradiation. This review will inspire readers in widen the applications of g-C3N4 based catalyst in various organic transformation reactions.
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11
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Gashi A, Parmentier J, Fioux P, Marsalek R. Tuning the C/N Ratio of C‐Rich Graphitic Carbon Nitride (g‐C
3
N
4
) Materials by the Melamine/Carboxylic Acid Adduct Route. Chemistry 2022; 28:e202103605. [DOI: 10.1002/chem.202103605] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Indexed: 11/06/2022]
Affiliation(s)
- Arianit Gashi
- Department of Chemistry University of Ostrava 30. Dubna 22 Ostrava 701 03 Czech Republic
- Institut de Science des Matériaux de Mulhouse (IS2 M) Université de Strasbourg, Université de Haute-Alsace 15 rue Jean Starcky, BP 2488 68057 Mulhouse Cedex France
| | - Julien Parmentier
- Institut de Science des Matériaux de Mulhouse (IS2 M) Université de Strasbourg, Université de Haute-Alsace 15 rue Jean Starcky, BP 2488 68057 Mulhouse Cedex France
| | - Philippe Fioux
- Institut de Science des Matériaux de Mulhouse (IS2 M) Université de Strasbourg, Université de Haute-Alsace 15 rue Jean Starcky, BP 2488 68057 Mulhouse Cedex France
| | - Roman Marsalek
- Department of Chemistry University of Ostrava 30. Dubna 22 Ostrava 701 03 Czech Republic
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12
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Jin X, Lou Y, Zhang X, Wang B, Zhu Y, Gu X, Ding S, Ma J. Broccoli-liked silver phosphate nanoparticles supported on green nanofiber membrane for visible-light driven photodegradation towards water pollutants. NANOTECHNOLOGY 2022; 33:185703. [PMID: 35073520 DOI: 10.1088/1361-6528/ac4e42] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/24/2022] [Indexed: 06/14/2023]
Abstract
In view of the practical application, it is imperative to develop efficient, exercisable, and visible light driven water pollution treatment materials. Herein, a high-efficiency green photocatalytic membrane for water pollution treatment is proposed and fabricated conveniently. Firstly, silver phosphate (Ag3PO4) nanoparticles with controlled morphology were prepared by simple liquid-phase precipitation method, and then a hierarchical structured Ag3PO4@polylactic acid (PLA) composite nanofiber membrane was prepared by electrospinning. Using electrospun PLA nanofiber membrane as a carrier of photocatalysts can significantly improve the dispersion of Ag3PO4nanoparticles, and increase the contact probability with pollutants and photocatalytic activity. The prepared PLA@Ag3PO4composite membrane was used to degrade methylene blue (MB) and tetracycline hydrochloride (TC) under visible light irradiation. The results showed that the removal ratio of pollutants on Ag3PO4@PLA composite nanofiber membrane was 94.0% for MB and 82.0% for TC, demonstrating an outstanding photocatalytic activity of composite membrane. Moreover, the PLA nanofiber membrane is a self-supported and biodegradable matrix. After five cycles, it can still achieve 88.0% of the initial photocatalytic degradation rate towards MB, showing excellent recyclability. Thus, this composite nanofiber membrane is a high-efficiency and environmental-friendly visible light driven water pollution treatment material that could be used in real applications.
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Affiliation(s)
- Xu Jin
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Yaoyuan Lou
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Xiuqin Zhang
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Bin Wang
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Yanlong Zhu
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Xiaoxia Gu
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Shanshan Ding
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
| | - Jiayu Ma
- School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, People's Republic of China
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13
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Chen S, Yu J, Chen Z, Huang Z, Song Y. Simultaneous electrochemical sensing of heavy metal ions based on a g-C 3N 4/CNT/NH 2-MIL-88(Fe) nanocomposite. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:5830-5837. [PMID: 34842866 DOI: 10.1039/d1ay01682b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The presence of Cd2+, Pb2+, Cu2+ and Hg2+ in drinking-water can be harmful to human health, even if their concentration is fairly low. Hence, it is significant to detect these heavy metal ions in sewage to evaluate the quality of water. Herein, amino-functionalized metal-organic frameworks (NH2-MIL-88(Fe)) embedded with graphitic carbon nitride (g-C3N4) nanosheets and acid-functionalized carbon nanotubes were prepared via a one-pot synthesis. The composite can be directly modified on the surface of glass carbon electrodes without the assistance of Nafion or other binders. The modified glass carbon electrodes can be used to simultaneously detect Cd2+, Pb2+, Cu2+ and Hg2+ in water via square wave stripping voltammetry. The doping of g-C3N4 in the composite, rich in N-containing functional groups, participates in the adsorption of metal ions on the surface of the electrodes. The porous composite provides accommodation room for metals generated by electro-reduction. The detection limit for Cd2+, Pb2+, Cu2+ and Hg2+ is 39.6 nM, 7.6 nM, 11.9 nM, and 9.6 nM, respectively. And the sensitivity for Cd2+, Pb2+, Cu2+ and Hg2+ is 0.0789 mA μM-1 cm-2, 0.4122 mA μM-1 cm-2, 0.2616 mA μM-1 cm-2, and 0.3251 mA μM-1 cm-2, respectively. This work not only enriches the functional design of Fe-MOF materials, but also develops a method for the determination of metal ions using the adsorption sites in g-C3N4.
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Affiliation(s)
- Shouhui Chen
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China.
| | - Jingguo Yu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China.
| | - Zhen Chen
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China.
| | - Zhenzhong Huang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China.
| | - Yonghai Song
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang 330022, China.
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14
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Oseghe EO, Akpotu SO, Mombeshora ET, Oladipo AO, Ombaka LM, Maria BB, Idris AO, Mamba G, Ndlwana L, Ayanda OS, Ofomaja AE, Nyamori VO, Feleni U, Nkambule TT, Msagati TA, Mamba BB, Bahnemann DW. Multi-dimensional applications of graphitic carbon nitride nanomaterials – A review. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117820] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Preparation and characterization of graphitic carbon nitride-supported L-arginine as a highly efficient and recyclable catalyst for the one-pot synthesis of condensation reactions. Sci Rep 2021; 11:19792. [PMID: 34611176 PMCID: PMC8492782 DOI: 10.1038/s41598-021-97360-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/25/2021] [Indexed: 12/20/2022] Open
Abstract
In this work, graphitic carbon nitride-supported l-arginine (g-C3N4@l-arginine) nanocatalyst was synthesized and evaluated using FT-IR, EDX, XRD, TGA, and FESEM analyses. The performance of the prepared nanocatalyst was examined in the synthesis of 1,4-dihydropyridine, 4H-chromene, and 2,3-dihydro quinazoline derivatives. The novel g-C3N4@l-arginine nanocatalyst showed high thermal stability, easy separation from reaction media, the capability to be used in various multicomponent reactions, and acceptable reusability.
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16
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Rashid J, Saleemi F, Akram B, Wang L, Hussain N, Xu M. Facile Synthesis of g-C 3N 4/MoO 3 Nanohybrid for Efficient Removal of Aqueous Diclofenac Sodium. NANOMATERIALS 2021; 11:nano11061564. [PMID: 34198566 PMCID: PMC8231834 DOI: 10.3390/nano11061564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/31/2021] [Accepted: 06/05/2021] [Indexed: 11/23/2022]
Abstract
Graphitic carbon nitride modified by molybdenum trioxide (g-C3N4/MoO3) as a nanohybrid was synthesized by co-precipitation method. Here, g-C3N4/MoO3 nanohybrid was used for the first time as an adsorbent for the pharmaceutical drug, diclofenac, (an aqueous micropollutant) from water to mitigate its possible environmental toxic effects. Compared to pristine components, the nanohybrid exhibited better adsorptive removal of diclofenac. Adsorption was enhanced with increment in MoO3 content from 1 to 3 wt %; however further increment in MoO3 content resulted in lower adsorption capacity due to agglomeration of MoO3 particles over g-C3N4. 162 mg g−1 adsorption capacity was achieved for 300 mg L−1 diclofenac in solution with 1 g L−1 adsorbent at pH = 6. Adsorption of diclofenac over g-C3N4 /MoO3 followed pseudo 2nd order kinetics. Temkin, Langmuir, Dubinin Radushkevich and Freundlich isotherm models were applied on the experimental results concluding that diclofenac adsorption over g-C3N4/MoO3 followed the Langmuir isotherm. The adsorption mechanism could be explained by the π–π interaction between aromatic rings of diclofenac and g-C3N4/MoO3 (3%) nanohybrid, which is also evident by the FTIR results. This study presents the facile fabrication of a 2nd generation adsorbent for the treatment of diclofenac contaminated water that may as well help achieve the removal of other micropollutants form water.
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Affiliation(s)
- Jamshaid Rashid
- College of Environment and Planning, Henan University, Kaifeng 475004, China;
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Henan University, Kaifeng 475004, China
- Department of Environmental Science, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Faryal Saleemi
- Department of Environmental Science, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad 45320, Pakistan;
| | - Bilal Akram
- Department of Chemistry, Tsinghua University, Beijing 100084, China;
| | - Lin Wang
- College of Environment and Planning, Henan University, Kaifeng 475004, China;
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Henan University, Kaifeng 475004, China
- Miami College, Henan University, Kaifeng 475004, China
- Correspondence: (L.W.); (M.X.)
| | - Naveed Hussain
- Institute of Fundamental and Frontier Sciences (IFFS), University of Electronic Science and Technology of China, Chengdu 610054, China;
| | - Ming Xu
- College of Environment and Planning, Henan University, Kaifeng 475004, China;
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Ministry of Education, Henan University, Kaifeng 475004, China
- Henan Key Laboratory of Earth System Observation and Modeling, Henan University, Kaifeng 475004, China
- Correspondence: (L.W.); (M.X.)
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Pandi K, Lakhera SK, Bernaurdshaw N. Efficient promotion and transfer of excited charge carriers in phosphorus doped and Ni complex modified g-C3N4. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ravichandran D, Akilan R, Vinnarasi S, Shankar R, Khadheer Pasha SK, Manickam S. Tuning the reactivity of tri-s-triazine, trinitro-tri-s-triazine and ternary tri-s-triazine graphitic C 3N 4 quantum dots through H-functionalized and B-doped complexes: A density functional study. CHEMOSPHERE 2021; 272:129901. [PMID: 33607492 DOI: 10.1016/j.chemosphere.2021.129901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/27/2021] [Accepted: 02/02/2021] [Indexed: 06/12/2023]
Abstract
Modifying the structures and doping are proven to be effective methods to tune the structural and electrical properties of g-C3N4 quantum dots. Hence, in this study, tri-s-triazine and tri-nitro tri-s-triazine have been studied by functionalizing their edges with hydrogen. The H-functionalized tri-nitro tri-s-triazine quantum dot displays a buckled structure with a band gap of 1.988 eV, whereas the tri-s-triazine demonstrates a planner structure with a band gap of 1.636 eV. The obtained results have been compared with the previous results. The absorbance spectrum of H-functionalized trinitro tri-s-triazine falls under the visible region with a peak value of 488 nm, and the absorption spectrum of tri-s-triazine falls at 790 nm. The planarity of the tri-nitro tri-s-triazine structure is improved by doping the B atom in the N site, and the band gap of H-functionalized B doped tri-nitro tri-s-triazine is 1.143 eV. The absorbance spectrum of H-functionalized B doped tri-nitro tri-s-triazine is 508 nm. The reactivity of the structure is increased by doping B atoms, and it is confirmed by the electrophilicity index. Similarly, the H-functionalized B doped tri-s-triazine exhibits a band gap of 1.328 eV. Further, the tri-s-triazine structures are arranged in ternary form, and the properties are studied by increasing the number of B atoms in the tri-s-triazine rings. The outcome presents that the structures are planar, and band gap values are reduced further. Also, the reactivity of the sheets is increased, which is confirmed by the electrophilicity index. It is proposed that the sheets with a high reactivity can be used for the removal of hazardous ions and molecules from the industrial wastage.
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Affiliation(s)
- D Ravichandran
- Department of Physics, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - R Akilan
- Department of Physics, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - S Vinnarasi
- Department of Physics, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - R Shankar
- Department of Physics, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India.
| | - S K Khadheer Pasha
- Department of Physics, Vellore Institute of Technology, Amaravathi campus, Amaravati, 522501, Guntur, Andra Pradesh, India
| | - Sivakumar Manickam
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam
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Yu C, Tan L, Shen S, Fang M, Yang L, Fu X, Dong S, Sun J. In situ preparation of g-C 3N 4/polyaniline hybrid composites with enhanced visible-light photocatalytic performance. J Environ Sci (China) 2021; 104:317-325. [PMID: 33985735 DOI: 10.1016/j.jes.2020.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 06/12/2023]
Abstract
The graphic carbon nitride/polyaniline (g-C3N4/PANI) hybrid composites were successfully synthesized by a facile in situ polymerization process under ice water bath. The photocatalytic activities of the g-C3N4/PANI composites were evaluated by using oxytetracycline (OTC) as model pollutants. The optimal g-C3N4/PANI composite (5%PANI: the g-C3N4/PANI hybrid with 5 wt.% of PANI) showed an enhancement degradation rate of 5-fold compared to that of conventional g-C3N4 under simulated-sunlight irradiation. In addition, the 5%PANI demonstrate significantly photocatalytic evolution H2 rate (163.2 μmol/(g⋅hr)) under the visible light irradiation. Furthermore, based on the results of optical performance and electrochemical testing, a possible mechanism was proposed, indicating that the incorporation of PANI into the traditional g-C3N4 can effectively tune the electronic structures, improve the photo-generated electrons-holes separation and enhance extensive absorption of visible light. Such a g-C3N4/PANI hybrid nanocomposites could be envisaged to possess great potentials in practical wastewater treatment and water splitting.
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Affiliation(s)
- Chongfei Yu
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Lu Tan
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Shujie Shen
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Menghao Fang
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Ling Yang
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Xinfan Fu
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Shuying Dong
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China.
| | - Jianhui Sun
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China.
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Liu J, Zhang M, Zhang Q, Mao J, Sun YA, Zhang S, Zhu Y, Guo Y, Zhang J. Preparation and characterization of graphitic carbon-nitride nanosheets agglomerated poly (styrene-divinylbenzene) anion-exchange stationary phase for ion chromatography. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Yang Y, Bian Z. Oxygen doping through oxidation causes the main active substance in g-C 3N 4 photocatalysis to change from holes to singlet oxygen. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:141908. [PMID: 32889315 DOI: 10.1016/j.scitotenv.2020.141908] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 08/05/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Improving the photocatalytic activity of graphitic carbon nitride (g-C3N4) for organic pollutant removal from water and in-depth study of the effect of oxygen doping on its photocatalytic mechanism are deserving of research attention. Oxygen-doped g-C3N4 with a suitable degree of oxidation was prepared by oxidation using concentrated acid-ultrasound double oxidation. Oxygen doping by oxidation changed the physical and chemical properties of g-C3N4, and improved its rhodamine B photocatalytic degradation efficiency. The physical and chemical properties of g-C3N4 were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and zeta potential analysis, among other methods. The photocatalytic mechanism was also studied in depth using photoluminescence, electrochemical impedance spectroscopy, transient photocurrent measurements, diffuse reflectance spectroscopy, and Mott-Schottky plots. An appropriate degree of oxidation introduced pit-like defects rich in oxygen-containing functional groups onto the g-C3N4 surface, which improves its photocatalytic performance. Furthermore, in the photocatalytic process of oxidized g-C3N4, oxygen doping was confirmed to change the main active substance of g-C3N4 photocatalysis from holes to singlet oxygen. This study provides an in-depth explanation of the photocatalytic mechanism of g-C3N4 doped with oxygen, which provides guidance and reference for the design of photocatalysts for organic pollutant removal from water and the analysis of photocatalytic mechanisms for water treatment.
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Affiliation(s)
- Yajing Yang
- Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Zhaoyong Bian
- Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, People's Republic of China.
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Hsini A, Naciri Y, Benafqir M, Ajmal Z, Aarab N, Laabd M, Navío JA, Puga F, Boukherroub R, Bakiz B, Albourine A. Facile synthesis and characterization of a novel 1,2,4,5-benzene tetracarboxylic acid doped polyaniline@zinc phosphate nanocomposite for highly efficient removal of hazardous hexavalent chromium ions from water. J Colloid Interface Sci 2020; 585:560-573. [PMID: 33158558 DOI: 10.1016/j.jcis.2020.10.036] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 02/06/2023]
Abstract
The present study describes the preparation of a novel 1,2,4,5-benzene tetracarboxylic acid doped polyaniline@zinc phosphate (BTCA-PANI@ZnP) nanocomposite via a facile two-step procedure. Thereafter, the as-prepared composite material adsorption characteristics for Cr(VI) ions removal were evaluated under batch adsorption. Kinetic approach studies for Cr(VI) removal, clearly demonstrated that the results of the adsorption process followed the pseudo second order and Langmuir models. The thermodynamic study indicated a spontaneous and endothermic process. Furthermore, higher monolayer adsorption was determined to be 933.88 mg g-1. In addition, the capability study regarding Cr(VI) ions adsorption over BTCA-PANI@ZnP nanocomposite clearly revealed that our method is suitable for large scale application. X-ray photoelectron spectroscopy (XPS) analysis confirmed Cr(VI) adsorption on the BTCA-PANI@ZnP surface, followed by its subsequent reduction to Cr(III). Thus, the occurrence of external mass transfer, electrostatic attraction and reduction phenomenon were considered as main mechanistic pathways of Cr(VI) ions removal. The superior adsorption performance of the material, the multi-dimensional characteristics of the surface and the involvement of multiple removal mechanisms clearly demonstrated the potential applicability of the BTCA-PANI@ZnP material as an effective alternative for the removal of Cr(VI) ions from wastewater.
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Affiliation(s)
- Abdelghani Hsini
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
| | - Yassine Naciri
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Benafqir
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Zeeshan Ajmal
- College of Engineering, China Agricultural University, 100083 Beijing, PR China
| | - Nouh Aarab
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Mohamed Laabd
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - J A Navío
- Instituto de Ciencia de Materiales de Sevilla, Centro Mixto Universidad de Sevilla-CSIC, Américo Vespucio 49, 41092 Sevilla, Spain
| | - F Puga
- Instituto de Ciencia de Materiales de Sevilla, Centro Mixto Universidad de Sevilla-CSIC, Américo Vespucio 49, 41092 Sevilla, Spain
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520 - IEMN, F-59000 Lille, France
| | - Bahcine Bakiz
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Abdallah Albourine
- Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
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Abstract
In this work, Pani and Pani@g-C3N4 was synthesized by in situ oxidative polymerization methodology of aniline, in the presence of g-C3N4. The as prepared Pani@g-C3N4 was characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffraction (XRD). The morphological analysis showed well dispersed Pani in g-C3N4, as well as the coating of Pani on g-C3N4. The XRD further revealed this, and peaks of Pani as well as g-C3N4 was observed, thereby suggesting successful synthesis of the composite. The DC electrical conductivity studies under isothermal and cyclic aging conditions showed high stability of composites over 100 °C. Further, the synthesized composite material proved to be an excellent antimicrobial agent against both type i.e., gram positive Streptococcus pneumoniae and negative bacteria Escherichia coli. In the zone inhibition assay 18 ± 0.5, 16 ± 0.75 and 20 ± 0.5, 22 ± 0.5 mm zone diameter were found against E. coli and S. pneumoniae in presence of pure g-C3N4 and Pani@g-C3N4 at 50 µg concentrations, respectively. Further antimicrobial activity in the presence of sunlight in aqueous medium showed that Pani@g-C3N4 is more potent than pure g-C3N4.
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Chen Z, Zhang S, Liu Y, Alharbi NS, Rabah SO, Wang S, Wang X. Synthesis and fabrication of g-C 3N 4-based materials and their application in elimination of pollutants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 731:139054. [PMID: 32413656 DOI: 10.1016/j.scitotenv.2020.139054] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/18/2020] [Accepted: 04/26/2020] [Indexed: 05/21/2023]
Abstract
With the fast development of industrial and human activity, large amounts of persistent organic pollutants, heavy metal ions and radionuclides are released into the natural environment, which results in environmental pollution. The efficient elimination of the natural environment is crucial for the protection of environment to against the pollutants' toxicity to human beings and living organisms. Graphitic carbon nitride (g-C3N4) has drawn multidisciplinary attention especially in environmental pollutants' cleanup due to its special physicochemical properties. In this review, we summarized the recent works about the synthesis of g-C3N4, element-doping, structure modification of g-C3N4 and g-C3N4-based materials, and their application in the sorption, photocatalytic degradation and reduction-solidification of persistent organic pollutants and heavy metal ions. The interaction mechanisms were discussed from advanced spectroscopic analysis and computational approaches at molecular level. The challenges and future perspectives of g-C3N4-based materials' application in environmental pollution management are presented in the end. This review highlights the real applications of g-C3N4-based materials as adsorbents or photocatalysts in the adsorption-reduction-solidification of metal ions or photocatalytic degradation of organic pollutants. The contents are helpful for the undergraduate students to understand the recent works in the elimination of organic/inorganic pollutants in their pollution management.
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Affiliation(s)
- Zhongshan Chen
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Sai Zhang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Yang Liu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Njud Saleh Alharbi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Samar Omar Rabah
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Suhua Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China; School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, PR China
| | - Xiangxue Wang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China.
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25
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Taghizadeh A, Taghizadeh M, Jouyandeh M, Yazdi MK, Zarrintaj P, Saeb MR, Lima EC, Gupta VK. Conductive polymers in water treatment: A review. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113447] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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26
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Bahuguna A, Sasson Y. Functionalized Graphitic Carbon Nitride Decorated with Palladium: an Efficient Heterogeneous Catalyst for Hydrogenation Reactions Using KHCO 2 as a Mild and Noncorrosive Source of Hydrogen. ACS OMEGA 2020; 5:12302-12312. [PMID: 32548413 PMCID: PMC7271368 DOI: 10.1021/acsomega.0c00996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
Functionalization of the widely known graphitic carbon nitride (GCN) material has been performed, and a novel heterogeneous catalyst is reported by incorporating palladium over the surface of functionalized GCN. GCN was functionalized using an optimized ratio of sulfuric acid, nitric acid, and hydrogen peroxide. The developed catalyst was characterized by powder X-ray diffraction, IR, scanning tunneling microscopy, tunneling electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, thermogravimetric analysis, and solid-state CP-NMR. The developed material containing ≤1% Pd exhibits superior catalytic activity in comparison to other carbon support materials (such as 5% Pd/C) for various hydrogenation reactions under mild conditions. Potassium formate has been chosen as the best hydrogen source among other alkali metal formates. The developed catalyst was also able to catalyze a one-pot three-step reaction for the synthesis of N-benzylaniline which is a precursor of various antihistamine and anticholargenic drugs. Moreover, the catalyst could be recycled multiple times and consistent activity was reported.
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Kumar R, Barakat MA, Alseroury FA, Al-Mur BA, Taleb MA. Experimental design and data on the adsorption and photocatalytic properties of boron nitride/cadmium aluminate composite for Cr(VI) and cefoxitin sodium antibiotic. Data Brief 2020; 28:105051. [PMID: 32226811 PMCID: PMC7096680 DOI: 10.1016/j.dib.2019.105051] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 11/24/2022] Open
Abstract
This article reports the experimental data on the adsorption and photocatalytic degradation-reduction properties of pure boron nitride (BN), cadmium aluminate (CdAl2O4) and boron nitride/cadmium aluminate (BN/CdAl2O4) composite for the hexavalent chromium (Cr(VI)) and cefoxitin sodium (CFT) in aqueous solution under the ultraviolet (UV) and visible light irradiation. This work evaluates the adsorption and photocatalytic efficiency of the 0.2g BN coupled with the CdAl2O4 in BN-0.2/CdAl2O4 composite for Cr(VI) and CFT. The experiments were performed by mixing the 0.025 material with 50 mL solution of known concentration (15 mg/L) at pH 3 for Cr(VI) and pH 7 for CFT. The obtained data can be valuable to select the proper light source (UV or visible) and pollutant to investigate the application of BN-0.2/CdAl2O4 composite. Moreover, presented data can help identify the equilibrium time for the adsorption process and to recognize the best process for the removal of the pollutants from wastewaters. A comparison of the obtained data with previously reported works has been conducted for the understanding of the adsorption and photocatalysis of Cr(VI) and CFT using various materials under the different experimental conditions.
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Affiliation(s)
- Rajeev Kumar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - M A Barakat
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.,Central Metallurgical R & D Institute, Helwan, 11421, Cairo, Egypt
| | - Fathia A Alseroury
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Physics, Faculty of Science, University of Jeddah, Saudi Arabia
| | - Bandar A Al-Mur
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Md Abu Taleb
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Vu VT, Bartling S, Peppel T, Lund H, Kreyenschulte C, Rabeah J, Moustakas NG, Surkus AE, Ta HD, Steinfeldt N. Enhanced photocatalytic performance of polymeric carbon nitride through combination of iron loading and hydrogen peroxide treatment. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124383] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Jilani A, Rehman GU, Ansari MO, Othman MHD, Hussain SZ, Dustgeer MR, Darwesh R. Sulfonated polyaniline-encapsulated graphene@graphitic carbon nitride nanocomposites for significantly enhanced photocatalytic degradation of phenol: a mechanistic study. NEW J CHEM 2020. [DOI: 10.1039/d0nj03684f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The photocatalytic degradation of phenol through -s-PANI@g-C3N4 and its nanocomposites with graphene.
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Affiliation(s)
- Asim Jilani
- Center of Nanotechnology
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Advanced Membrane Technology Research Centre
| | - Ghani Ur Rehman
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- School of Chemical and Energy Engineering
| | - Mohammad Omaish Ansari
- Center of Nanotechnology
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- School of Chemical Engineering
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 UTM Johor Bahru
- Malaysia
- School of Chemical and Energy Engineering
| | - Syed Zajif Hussain
- Department of Chemistry and Chemical engineering
- SBA School of Science & Engineering (SBASSE)
- Lahore University of Management Sciences (LUMS)
- Lahore 54792
- Pakistan
| | - Mohsin Raza Dustgeer
- Department of Environmental Sciences and Engineering
- Government College University Faisalabad
- Faisalabad
- Pakistan
| | - Reem Darwesh
- Physics Department
- Faculty of Science
- King Abdulaziz University
- Jeddah
- Saudi Arabia
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30
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Duan J, Zhao L, Lv W, Li Y, Zhang Y, Ai S, Zhu L. Facile synthesis of g-C3N4/Fe3O4 nanocomposites for fluorescent detection and removal of Cr(VI). Microchem J 2019. [DOI: 10.1016/j.microc.2019.104105] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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31
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Ponnaiah SK, Prakash P, Muthupandian S. Ultrasonic energy-assisted in-situ synthesis of Ru 0/PANI/g-C 3N 4 nanocomposite: Application for picomolar-level electrochemical detection of endocrine disruptor (Bisphenol-A) in humans and animals. ULTRASONICS SONOCHEMISTRY 2019; 58:104629. [PMID: 31450371 DOI: 10.1016/j.ultsonch.2019.104629] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 06/10/2023]
Abstract
Bisphenol A (BPA) is an endocrine-disrupting chemical which resembles structurally the hormone estrogen. Even a trace amount of BPA can bind estrogen receptors resulting in the inducement of reproductive disorders, cancers and problems related to sexual growth such as manliness in female and womanliness in male. So the determination of BPA in human and animal bodies is very essential. For this purpose, a new nanocomposite composed of ruthenium nanoparticles, polyaniline and graphitic carbon nitride (Ru0/PANI/g-C3N4) has been synthesized ultrasonically (40 ± 3 kHz, 200 W). A modification on glassy carbon electrode (GCE) with the nanocomposite detects BPA in human and animal urine samples with wide linear range (0.01-1.1 µM) and the limit of detection is pico molar-level. The synthesized nanocomposite was characterized by Ultraviolet-Visible and Fourier Transform-Infra Red spectroscopies, thermo gravimetric analysis, transmission electron microscopy, X-ray diffraction study, energy dispersive X-ray analysis, and elemental mapping analysis. This sensing system is selective, stable and reusable, by which the detection of BPA in various physiological fluids is very much possible.
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Affiliation(s)
| | | | - Saravanan Muthupandian
- Department of Microbiology and Immunology, Institute of Biomedical Sciences, College of Health Science, Mekelle University, Mekelle 1871, Ethiopia
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32
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Su J, Bi L, Wang C, Lyu T, Pan G. Enhancement of cadmium removal by oxygen-doped carbon nitride with molybdenum and sulphur hybridization. J Colloid Interface Sci 2019; 556:606-615. [PMID: 31493760 DOI: 10.1016/j.jcis.2019.08.104] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 02/08/2023]
Abstract
Graphitic carbon nitride, as a popular material in the field of environmental remediation, still suffers from unsatisfactory performance for heavy metals adsorption owing to lack of specific adsorption sites. In this study, molybdenum (Mo) and sulphur (S) were simultaneously introduced onto the surface of oxygen-doped graphitic carbon nitride (OCN) for the enhancement of Cd2+ adsorption. The synthesized MOS/OCN-1 exhibited substantially increased maximum adsorption capacity of 293.8 mg/g, calculated from Sips isotherm model, which was 8.7 times higher than that for pristine OCN (33.9 mg/g). The adsorption efficiency of MOS/OCN-1 was >94% even under high concentration of coexisting ions (i.e., Ca2+, Mg2+ and Zn2+). MoO3 and MoS2 on the surface of OCN were proven to interact with Cd2+ by forming CdMoO4 and CdS species. OCN provided a stable matrix with a large surface area making more active sites exposed, which greatly facilitated Mo(IV) oxidation and Cd2+ precipitation. Our findings revealed that as well as the well-known Cd-S interaction, Mo atoms in the hybrid composites also played an important role in Cd2+ removal, which opened up the application possibility of OCN with Mo and S hybridization for in-situ Cd2+ remediation.
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Affiliation(s)
- Jing Su
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Lei Bi
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
| | - Chen Wang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China; Sino-Danish College of University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Tao Lyu
- School of Animal, Rural, and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, NG25 0QF, UK; Centre of Integrated Water-Energy-Food Studies (iWEF), Nottingham Trent University, Nottinghamshire NG25 0QF, UK.
| | - Gang Pan
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; School of Animal, Rural, and Environmental Sciences, Nottingham Trent University, Brackenhurst Campus, NG25 0QF, UK; Centre of Integrated Water-Energy-Food Studies (iWEF), Nottingham Trent University, Nottinghamshire NG25 0QF, UK; University of Chinese Academy of Sciences, Beijing 100049, PR China; Sino-Danish College of University of Chinese Academy of Sciences, Beijing 100049, PR China.
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33
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OuYang S, Zhang Y, Chen Y, Zhao Z, Wen M, Li B, Shi Y, Zhang M, Liu S. Preparation of Glass-ceramics Using Chromium-containing Stainless Steel Slag: Crystal Structure and Solidification of Heavy Metal Chromium. Sci Rep 2019; 9:1964. [PMID: 30760799 PMCID: PMC6374482 DOI: 10.1038/s41598-018-37996-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/17/2018] [Indexed: 11/10/2022] Open
Abstract
It is a useful way to stabilize the elements of heavy metal in the glass-ceramics with the form of ions due to the environmental pollution of heavy metal, such as Cr. The glass-ceramics of excellent combination properties were prepared, and the effect of stabilizing Cr-containing stainless steel slag with different concentrations of nitric acid leaching test were investigated. It was found that the major crystalline phase was diopside or anorthite with or without the amount stainless steel slag. Moreover, the continuous refinement of grains exhibited with the increase of amount of stainless steel slag. The results indicated that the excellent physical and mechanical properties, including density (2.9 g/cm3), hardness (729.27HV0.3), bending strength (222.9 MPa), and the solid solution of Cr in excess of 0.00057% for the glass-ceramics were related to the change of microstructure and phase structure. There showed the potential for reusing and detoxifying stainless steel slag.
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Affiliation(s)
- ShunLi OuYang
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - YuXuan Zhang
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - YuXin Chen
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - ZengWu Zhao
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - Ming Wen
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - BaoWei Li
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China.
| | - Yu Shi
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - MingZhe Zhang
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
| | - ShiLiang Liu
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou, 014010, China
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34
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Almoisheer N, Alseroury FA, Kumar R, Aslam M, Barakat MA. Adsorption and anion exchange insight of indigo carmine onto CuAl-LDH/SWCNTs nanocomposite: kinetic, thermodynamic and isotherm analysis. RSC Adv 2019; 9:560-568. [PMID: 35521609 PMCID: PMC9059263 DOI: 10.1039/c8ra09562k] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 12/14/2018] [Indexed: 11/21/2022] Open
Abstract
Two-dimensional layered materials are gaining much attention in the field of wastewater purification. Herein, we report the synthesis and characterization of an anion selective copper–aluminum-layered double hydroxide/single-walled carbon nanotubes (CuAl-LDH/SWCNTs) composite for the scavenging of organic dye indigo carmine (IC) from aqueous solution. A facile urea hydrolysis method was used for the controlled growth of the metal hydroxides over the SWCNTs. Structural characterization of the prepared materials was investigated using X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques. The obtained results revealed that the CuAl-LDH/SWCNTs composite has a higher potential for the removal of IC in comparison to CuAl-LDH and SWCNTs. The enhanced adsorption capacity of the composite revealed that deposition of CuAl-LDH over SWCNTs increases the active adsorption sites and promotes the interactions between the composite and IC dye via anion exchange, electrostatic, π–π, hydrogen bonding etc. Moreover, adsorption kinetics, isotherms, and thermodynamic studies have been also proposed to illustrate the mechanism of the IC adsorption onto the CuAl-LDH/SWCNTs composite. Thermodynamic parameters showed that the adsorption of IC dye onto the CuAl-LDH/SWCNTs composite was exothermic and spontaneous in nature. Intra-particle diffusion was determined to be the rate-limiting step and adsorption of IC followed the Langmuir isotherm model with the maximum monolayer adsorption capacity 294.117 mg g−1 at 20 °C. The results suggest that the CuAl-LDH/SWCNTs composite is a potential material for IC adsorption in aqueous solution. Two-dimensional layered materials are gaining much attention in the field of wastewater purification.![]()
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Affiliation(s)
- Noha Almoisheer
- Department of Physics
- Faculty of Science
- King Abdulaziz University
- Kingdom of Saudi Arabia
| | - F. A. Alseroury
- Department of Physics
- Faculty of Science
- King Abdulaziz University
- Kingdom of Saudi Arabia
| | - Rajeev Kumar
- Department of Environmental Sciences
- Faculty of Meteorology, Environment and Arid Land Agriculture
- King Abdulaziz University
- Jeddah
- Kingdom of Saudi Arabia
| | - M. Aslam
- Center of Excellence in Environmental Studies
- King Abdulaziz University
- Kingdom of Saudi Arabia
| | - M. A. Barakat
- Department of Environmental Sciences
- Faculty of Meteorology, Environment and Arid Land Agriculture
- King Abdulaziz University
- Jeddah
- Kingdom of Saudi Arabia
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35
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Pant A, Tanwar R, Kaur B, Mandal UK. A magnetically recyclable photocatalyst with commendable dye degradation activity at ambient conditions. Sci Rep 2018; 8:14700. [PMID: 30279537 PMCID: PMC6168602 DOI: 10.1038/s41598-018-32911-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 09/18/2018] [Indexed: 11/09/2022] Open
Abstract
An efficient, economical, environment-friendly and easy separable catalyst to treat environmental contaminants is an enduring attention in recent years due to their great potential for environmental protection and remediation. Here we have reported the excellent performance of polyaniline activated heterojunctured Ni0.5Zn0.5Fe2O4 catalyst to degrade azo dye in an aqueous solution at ambient condition. The catalyst was prepared via a simple facile polymerization procedure. The physicochemical properties and structure of the synthesized catalyst was confirmed by TGA, PXRD, FTIR, SEM, HRTEM, XPS, EDX, and DRS techniques. The developed catalyst has shown an accelerated degradation ability of an organic pollutant Orange ll Sodium salt azo dye about 100% for the dye concentration of 50 ppm within five minutes at ambient conditions with 1 g/l loading of catalyst. Simple facile synthesis, easy separation by an external magnet, good reusability and high degradation capability of the catalyst may promote the practical applications of the heterostructured catalyst at ambient condition for water remediation. The present study also explored possible credible charge transfer directions and mechanism of photocatalysis supported by trapping experiments and electrochemical impedance spectroscopy (EIS) measurement for the effective improvement of photocatalytic activity and enhancement of the visible light adsorption.
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Affiliation(s)
- Abhilasha Pant
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Ruchika Tanwar
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Bikramjit Kaur
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India
| | - Uttam Kumar Mandal
- University School of Chemical Technology, G.G.S. Indraprastha University, Sector 16C, Dwarka, New Delhi, 110078, India.
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36
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Cao HX, Wang L, Pan CG, He YS, Liang GX. Aptamer based electrochemiluminescent determination of bisphenol A by using carboxylated graphitic carbon nitride. Mikrochim Acta 2018; 185:463. [PMID: 30225568 DOI: 10.1007/s00604-018-2997-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/08/2018] [Indexed: 12/14/2022]
Abstract
An electrochemiluminescence (ECL) based assay is described for the determination of the endocrine disruptor bisphenol A (BPA). The method is based on the use of carboxylated graphitic carbon nitride (C-g-C3N4) carrying an immobilized aptamer against BPA. In the presence of BPA, the ECL signal decreases due to ECL energy transfer from excited-state C-g-C3N4 to the BPA oxidation product. Under the optimal conditions, ECL intensity increases linearly in the 0.1 pM to 1 nM BPA concentration range. The detection limit is as low as 30 fM. The assay has excellent sensitivity, outstanding stability and high selectivity. It was applied to the determination of BPA in spiked water samples. Graphical abstract Aptamer modified carboxylated graphitic carbon nitride was synthesized and applied in an electrochemiluminescence-based aptasensor for bisphenol A.
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Affiliation(s)
- Hai-Xia Cao
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, China
| | - Li Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, China.
| | - Chang-Gang Pan
- School of the Environment, Jiangsu University, Zhenjiang, 212013, China
| | - Yu-Sheng He
- School of the Environment, Jiangsu University, Zhenjiang, 212013, China
| | - Guo-Xi Liang
- School of the Environment, Jiangsu University, Zhenjiang, 212013, China.
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37
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Vattikuti SVP, Reddy PAK, Shim J, Byon C. Visible-Light-Driven Photocatalytic Activity of SnO 2-ZnO Quantum Dots Anchored on g-C 3N 4 Nanosheets for Photocatalytic Pollutant Degradation and H 2 Production. ACS OMEGA 2018; 3:7587-7602. [PMID: 31458911 PMCID: PMC6644521 DOI: 10.1021/acsomega.8b00471] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 06/05/2018] [Indexed: 05/21/2023]
Abstract
A zero-dimensional/two-dimensional heterostructure consists of binary SnO2-ZnO quantum dots (QDs) deposited on the surface of graphitic carbon nitride (g-C3N4) nanosheets. The so-called SnO2-ZnO QDs/g-C3N4 hybrid was successfully synthesized via an in situ co-pyrolysis approach to achieve efficient photoactivity for the degradation of pollutants and production of hydrogen (H2) under visible-light irradiation. High-resolution transmission electron microscopy images show the close contacts between SnO2-ZnO QDs with the g-C3N4 in the ternary SnO2-ZnO QDs/g-C3N4 hybrid. The optimized hybrid shows excellent photocatalytic efficiency, achieving 99% rhodamine B dye degradation in 60 min under visible-light irradiation. The enriched charge-carrier separation and transportation in the SnO2-ZnO QDs/g-C3N4 hybrid was determined based on electrochemical impedance and photocurrent analyses. This remarkable photoactivity is ascribed to the "smart" heterostructure, which yields numerous benefits, such as visible-light-driven fast electron and hole transfer, due to the strong interaction between the SnO2-ZnO QDs with the g-C3N4 matrix. In addition, the SnO2-ZnO QDs/g-C3N4 hybrid demonstrated a high rate of hydrogen production (13 673.61 μmol g-1), which is 1.06 and 2.27 times higher than that of the binary ZnO/g-C3N4 hybrid (12 785.54 μmol g-1) and pristine g-C3N4 photocatalyst (6017.72 μmol g-1). The synergistic effect of increased visible absorption and diminished recombination results in enhanced performance of the as-synthesized tin oxide- and zinc oxide-modified g-C3N4. We conclude that the present ternary SnO2-ZnO QDs/g-C3N4 hybrid is a promising electrode material for H2 production and photoelectrochemical cells.
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Affiliation(s)
- S. V. Prabhakar Vattikuti
- School
of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan 712-749, Gyeongsangbuk-do, Republic of Korea
- E-mail: . Mobile: +82-(0)53-810-2452. Fax: +82-53-810-4627 (S.V.P.V.)
| | - Police Anil Kumar Reddy
- School
of Mechanical and Nuclear Engineering, Ulsan
National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jaesool Shim
- School
of Mechanical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan 712-749, Gyeongsangbuk-do, Republic of Korea
- E-mail: (J.S.)
| | - Chan Byon
- School
of Mechanical and Nuclear Engineering, Ulsan
National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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38
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Fronczak M, Demby K, Strachowski P, Strawski M, Bystrzejewski M. Graphitic Carbon Nitride Doped with the s-Block Metals: Adsorbent for the Removal of Methyl Blue and Copper(II) Ions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7272-7283. [PMID: 29856628 DOI: 10.1021/acs.langmuir.8b01041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The synthesis of graphitic carbon nitride (g-C3N4) doped with s-block metals is described. The materials were synthesized via thermal polycondensation of cyanamide and the appropriate metal chloride. The inclusion of the metal precursor strongly influenced the surface chemistry features as well as the textural, morphological, and structural properties of the g-C3N4. The doping of g-C3N4with s-block metals markedly enhanced its adsorption performance, which was studied during the removal of two model solutes (methyl blue and copper ions) from aqueous solutions. The maximum adsorption capacity for the organic dye was increased by 680 times after the doping process. The uptake of copper(II) increased ca. 30 times for the doped g-C3N4. The improvement of the adsorption performance is discussed in terms of the surface chemistry and textural features.
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Affiliation(s)
- Maciej Fronczak
- Faculty of Chemistry , University of Warsaw , Pasteur 1 Street , PL 02093 Warsaw , Poland
| | - Katarzyna Demby
- Faculty of Chemistry , University of Warsaw , Pasteur 1 Street , PL 02093 Warsaw , Poland
| | - Przemysław Strachowski
- Faculty of Chemistry , University of Warsaw , Pasteur 1 Street , PL 02093 Warsaw , Poland
| | - Marcin Strawski
- Faculty of Chemistry , University of Warsaw , Pasteur 1 Street , PL 02093 Warsaw , Poland
| | - Michał Bystrzejewski
- Faculty of Chemistry , University of Warsaw , Pasteur 1 Street , PL 02093 Warsaw , Poland
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39
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Kumar R, Ansari SA, Barakat MA, Aljaafari A, Cho MH. A polyaniline@MoS2-based organic–inorganic nanohybrid for the removal of Congo red: adsorption kinetic, thermodynamic and isotherm studies. NEW J CHEM 2018. [DOI: 10.1039/c8nj02803f] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic–inorganic functional hybrid polymeric materials are well known for the efficient removal of contaminants from wastewater.
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Affiliation(s)
- Rajeev Kumar
- Department of Environmental Sciences
- Faculty of Meteorology
- Environment and Arid Land Agriculture
- King Abdulaziz University
- Jeddah 21589
| | - Sajid Ali Ansari
- Department of Physics
- College of Science
- King Faisal University
- Al-Ahsa 31982
- Saudi Arabia
| | - M. A. Barakat
- Department of Environmental Sciences
- Faculty of Meteorology
- Environment and Arid Land Agriculture
- King Abdulaziz University
- Jeddah 21589
| | - Abdullah Aljaafari
- Department of Physics
- College of Science
- King Faisal University
- Al-Ahsa 31982
- Saudi Arabia
| | - Moo Hwan Cho
- School of Chemical Engineering
- Yeungnam University
- Gyeongbuk 712-749
- Republic of Korea
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