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Dehury AK, Kainda R, Chaudhary YS. Mechanistic Insight into the Defect-Engineered White Light Emission from the Single-Phase Orthovanadate Phosphor Synthesized by a Facile Rapid Microwave-Assisted Synthesis. Inorg Chem 2023; 62:17163-17181. [PMID: 37801079 DOI: 10.1021/acs.inorgchem.3c02156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The synthesis of single-phase barium orthovanadate phosphors by a one-pot microwave-assisted hydrothermal approach has been reported, wherein the homogeneous thermal zone generated at the molecular level by microwave radiation gives rise to tunable distortion in the tetrahedral VO4-3 and oxygen vacancies, eventually enabling intrinsic white light emission with CIE of 0.31,0.38, high photoluminescence internal quantum efficiency of 35%, and external quantum efficiency of 28% whereas phosphor synthesized by the hydrothermal route exhibits only bluish-green emission (PLQE: 0.5%). The Rietveld refinement confirms the formation of a single trigonal phase having dissimilar V-O bond lengths and bond angles, implying the formation of a distorted phosphor under optimized conditions, and corroborates with Raman and Fourier transform infrared analyses. The X-ray photoelectron spectroscopy and electron paramagnetic resonance analysis reveal that the origin of white light emission is due to short- and long-range defects, in particular the oxygen vacancies, which eventually form an intermediate energy level in the forbidden region between the valence and conduction bands. Lifetime spectra show triexponential fitting, corresponding to two charge transfer blue and green emission bands (3T2, 3T1 to 1A1) and one oxygen vacancy-related red emission at RT. Furthermore, these phosphors are thermally stable, as no change in the structure or emission characteristics are observed. A prototype fabricated using a 365 nm chip exhibits white-light-emission CIE of 0.353,0.392, correlated color temperature of 4867 K, color rendering index of 85, and high luminous efficacy of 102 lm/W at 140 mA operating current, portentous for practical applications.
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Affiliation(s)
- Asish K Dehury
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajeswari Kainda
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Yatendra S Chaudhary
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Mishra RP, Mrinalini M, Kumar N, Bastia S, Chaudhary YS. Efficient Photocatalytic CO 2 Reduction with High Selectivity for Ethanol by Synergistically Coupled MXene-Ceria and the Charge Carrier Dynamics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14189-14203. [PMID: 37776277 DOI: 10.1021/acs.langmuir.3c01064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/02/2023]
Abstract
The primary factors that govern the selectivity and efficacy of CO2 photoreduction are the degree of activation of CO2 on the active surface sites of photocatalysts and charge separation/transfer kinetics. In this context, the rational synthesis of heterostructured MXene-coupled CeO2-based photocatalysts with different loading concentrations of Ti3C2MXene via a one-step hydrothermal approach has been undertaken. These photocatalysts exhibit a shift in X-ray diffraction peaks to higher 2θ values and changes in stretching vibrations of 5 wt % Ti3C2MXene/CeO2(5-TC/Ce) that indicate interaction between Ti3C2MXene and CeO2. Moreover, XPS analysis confirms the presence of the Ce3+/Ce4+ states. A sharp band at 2335 cm-1 observed during the CO2 photoreduction process corresponds to bidentate b-CO32-, which facilitates the adsorption of CO2 at the surface of the catalyst as revealed by the TPD analysis. Furthermore, the Schryvers test and NMR analysis were undertaken to confirm the formaldehyde intermediate formation during CO2 photoreduction to C2H5OH. The decrease in emission intensity, reduced lifetimes (2.68 ns), and lower interfacial resistance, as revealed by PL, TR-PL, and EIS analysis, imply an efficient charge separation and charge transfer in the case of the Ti3C2MXene/CeO2 heterojunction. The decrease in the intensity of peaks in the EPR spectrum in the case of 5-TC/Ce further confirms efficient charge transfer kinetics across the interface. The optimized 5-TC/Ce shows CO2 reduction with a drastically enhanced yield of ethanol on the order of 6127 μmol g-1 at 5 h with 98% selectivity and 7.54% apparent quantum efficiency, which is 6-fold higher than that of ethanol produced by bare CeO2. Herein, CeO2 that acts as a redox couple (Ce3+/Ce4+) when coupled with MXene having a metallic nature that reduces the electron transfer resistance is in unison, enabling an enhanced mobilization of electrons. Thereby, the synergistic coupling of Ti3C2MXene with CeO2 leads to an efficient photoreduction of CO2 under visible light illumination.
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Affiliation(s)
- Rajashree P Mishra
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Madoori Mrinalini
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, India
| | - Niharika Kumar
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Sweta Bastia
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Yatendra S Chaudhary
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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Razafintsalama AR, Mishra RP, Sahoo MK, Mrinalini M, Sahoo B, Ravelonandro P, Chaudhary YS. Efficient Photocatalytic Reduction of Hexavalent Chromium by BiVO 4-Decorated MXene Photocatalysts and Their Charge Carrier Dynamics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:12725-12739. [PMID: 37655778 DOI: 10.1021/acs.langmuir.3c01462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The synergistically MXene (Ti3C2Tx) co-catalyst-decorated BiVO4-based heterostructured photocatalysts have been synthesized by a hydrothermal approach with varied loading concentrations of MXene (Ti3C2Tx) to drive the hexavalent chromium reduction efficiently. The formation of the heterostructured photocatalyst was confirmed by the appearance of X-ray diffraction (XRD) peaks corresponding to the monoclinic BiVO4 phase and MXene (Ti3C2Tx) and also the antisymmetric (834 cm-1) and symmetric stretching (715 cm-1) of tetrahedral VO4 and D (1330 cm-1) and G (1570 cm-1) bands corresponding to MXene (Ti3C2Tx) in the Raman spectrum. The worm-like structures of BiVO4 nanocrystals grew onto the lamellar sheets of MXene (Ti3C2Tx), as shown by field emission scanning electron microscopy (FESEM), and has an increased surface area of 15.62 m2g-1 in the case of BVO-20-TC. X-ray photoelectron spectroscopy (XPS) analysis confirms the presence of V5+ and Ti3+states, and the uniform distribution of BiVO4 nanocrystals over lamellar sheets of MXene (Ti3C2Tx) is evident from energy-dispersive X-ray (EDX) analysis. The ultraviolet-diffuse reflectance spectroscopy (UV-DRS) spectra suggest a decrease in the band gap energy of BVO-20-TC to 2.335 eV, promoting a higher degree of visible light harvesting. Upon optimization, by varying the pH, the amount of the photocatalyst, and the concentration of Cr(IV), BVO-20-TC exhibits the highest photocatalytic efficiency (96.39%) while using a Cr(VI) concentration of 10 ppm at pH 2 and 15 mg of the photocatalyst, and the photoreduction of Cr(VI) to Cr(III) follows the pseudo-first-order reaction. The decrease in the PL intensity in BVO-20-TC reveals a faster transfer of electrons from MXene (Ti3C2Tx) to BiVO4. Further, the higher degree of band bending at the BiVO4/MXene (Ti3C2Tx) heterojunction, revealed from the Mott-Schottky analysis, facilitates efficient charge transfer and eventually faster and efficient photoreduction of Cr(VI) to Cr(III). The reusability and stability test undertaken for BVO-20-TC reveals that even after five cycles, the Cr (VI) photoreduction efficacy is retained. This work provides insights into photoreduction of Cr (VI) by using such heterostructures.
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Affiliation(s)
- A Rija Razafintsalama
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
- Procédés et Ecologie Industrielle, Unité de Recherche en Génie des Procédés et Génie de l'Environnement, University of Antananarivo, Antananarivo 101, Madagascar
| | - Rajashree P Mishra
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Manas K Sahoo
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
| | - Madoori Mrinalini
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
| | - Bismaya Sahoo
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
| | - Pierre Ravelonandro
- Procédés et Ecologie Industrielle, Unité de Recherche en Génie des Procédés et Génie de l'Environnement, University of Antananarivo, Antananarivo 101, Madagascar
| | - Yatendra S Chaudhary
- Materials Chemistry Department, CSIR-Institute of Minerals Technology, Bhubaneswar, Odisha 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Bastia S, Moses YT, Kumar N, Mishra RP, Chaudhary YS. Enhanced Nitrogen Reduction to Ammonia by Surface- and Defect-Engineered Co-catalyst-Modified Perovskite Catalysts under Ambient Conditions and Their Charge Carrier Dynamics. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13052-13063. [PMID: 36853145 DOI: 10.1021/acsami.2c22193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
An electrocatalytic nitrogen reduction reaction is considered a potential approach for green ammonia production─a zero-carbon fertilizer, fuel, and energy storage for renewable energy. To harness the synergistic properties of perovskites, the inherent dipole moment due to their non-centrosymmetric structure (that facilitates better charge separation), oxygen vacancies, and the presence of Ni metal sites that permit activation and reduction of N2 efficiently, the NiTiO3-based nanoelectrocatalysts have been synthesized. Further, these catalysts have been modified with ultra-small metal nanocrystal co-catalysts to form heterointerfaces that not only aid to improve the charge separation but also activate N2 and lower overpotential requirements. The appearance of peaks corresponding to (012), (104), (110), (11-3), (024), (11-6), (018), (027), and (300) confirms the formation of rhombohedral NiTiO3. The shift in the XRD peak corresponding to the (104) plane to a smaller 2θ value and peak shifting and widening of Raman spectra imply the lattice distortion that signifies the formation of Pd-NiTiO3 and Pt-NiTiO3 heterojunction electrocatalysts with the loadings of 0.4 and 0.3 wt % of Pd and Pt, respectively, as confirmed by ICP-OES analysis. The detailed XPS analysis reveals the presence of Pd (0), Pd (II), and Pt (0), Pt (II) in respective electrocatalysts. The appearance of XPS peaks at 528.7 and 531.1 eV suggests the presence of oxidative oxygen species (O2-/O-) and the presence of oxygen defects due to oxygen vacancy. The detailed nitrogen reduction (NRR) investigation exhibits a 5-fold enhancement in ammonia yield rate (∼14.28 μg h-1 mg-1 at -0.003 V vs RHE), a faradic efficiency of 27% (at 0.097 V vs RHE) for Pd-NiTiO3 electrocatalysts than that for bare NiTiO3 (3.08 μg h-1 mg-1), and 9-folds higher than that of the activity shown by the commercial TiO2 (P25) (1.52 μg h-1mg-1). The formation of ammonia was further confirmed by using isotopic nitrogen as the feeding gas. Furthermore, the highest NRR is observed at lower cathodic potential (-0.003 V vs RHE) in the case of the Pd-NiTiO3 electrocatalyst than that of the Pt-NiTiO3 electrocatalyst (-0.203 V vs RHE), implying significantly reduced overpotential requirement. Such enhanced NRR activity with lower overpotential requirement in the case of the Pd-NiTiO3 electrocatalyst is due to efficient charge separation as shown by the semicircle Nyquist plot, decreased photoluminescence emission intensity, shorter average lifetime (∼29 ns) of excitons, appropriate band bending, and improved activation of N2 by the oxygen vacancies and heterointerface formed between Pd nanocrystals and NiTiO3. Furthermore, no change is observed in the current density, after stabilization in the initial few seconds, even up to 2 h, which signifies that these electrocatalysts are stable. The structural and morphological integrity of the optimized catalyst remained even after the nitrogen reduction reactions, as revealed by no significant change observed in FESEM, elemental mapping, and EDS analysis.
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Affiliation(s)
- Sweta Bastia
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Yilleng Titus Moses
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Department of Chemistry, Kaduna State University, Kaduna 2339, PMB, Nigeria
| | - Niharika Kumar
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Rajashree P Mishra
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Yatendra S Chaudhary
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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Photocatalytic degradation of the organophosphorus insecticide chlorpyrifos in aqueous suspensions using a novel activated carbon ZrO2-ZnO nanocomposite under UV light. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1354-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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6
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Liang J, Wu L, Li Z, Liu Y, Ding N, Dong Z. Preparation of core-shell catalyst for the tandem reaction of amino compounds with aldehydes. RSC Adv 2023; 13:5186-5196. [PMID: 36777936 PMCID: PMC9909682 DOI: 10.1039/d2ra08016h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 02/04/2023] [Indexed: 02/11/2023] Open
Abstract
Heterogeneous noble metal-based catalysts with stable, precise structures and high catalytic performance are of great research interest for sustainable catalysis. In this article, we designed a novel core-shell catalyst, Pd@UiO-66-NH2@mSiO2, with Pd@UiO-66-NH2 as the core and mesoporous SiO2 (mSiO2) as the shell. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) measurement results demonstrated that the obtained catalyst has an excellent core-shell structure. It can significantly prevent the aggregation of Pd nanoparticles (NPs), as well as the leaching of Pd NPs during the reaction process, owing to the protective effect of mSiO2. During the tandem reaction of aniline and benzaldehyde to generate secondary amines, the prepared Pd@UiO-66-NH2@mSiO2 is highly efficient, due to the strong acid sites provided by UiO-66-NH2 and the hydrogenation reduction sites provided by Pd NPs. Meanwhile, the Pd@UiO-66-NH2@mSiO2 with porous structure can also enhance the mass transfer of reactants to improve the reaction efficiency. Additionally, the prepared catalyst was used to catalyze the series reaction of amino compounds and aldehydes, and the results showed that just 5 mg of the catalyst can convert more than 99% of the reactants within 60 minutes in the presence of 1 atm H2 at room temperature. Finally, the selectivity and stability of the as-prepared catalyst were also confirmed.
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Affiliation(s)
- Jinhua Liang
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Lan Wu
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Zhenhua Li
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Yang Liu
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Nana Ding
- College of Chemical Engineering, Northwest Minzu University Lanzhou Gansu 730030 PR China +86 931 4512932 +86 931 4512932
| | - Zhengping Dong
- State Key Laboratory of Applied Organic Chemistry, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 PR China
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Shi J, Wang M, Wang H, Zhang C, Ji Y, Wang J, Zhou Y, Bhatti AS. Preparation of ultra-stable and environmentally friendly CsPbBr 3@ZrO 2/PS composite films for white light-emitting diodes. NANOSCALE 2022; 14:16548-16559. [PMID: 36314647 DOI: 10.1039/d2nr04255j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The working stability of perovskite light-emitting diodes (LEDs) has become an urgent bottleneck to be solved in the process of commercialization. Although lead halide perovskite CsPbX3 (X = Br, I, Cl) quantum dots (QDs) are considered rising stars in the lighting market owing to their excellent optoelectronic properties, they suffer from fluorescence quenching under thermal conditions. Unfortunately, the surfaces of electronic devices inevitably warm up under long-term energization, which is extremely detrimental to the appropriate functioning of CsPbX3 QDs. Based on the above discussion, the relationship function between the energization time and surface temperature of electronic devices was analyzed, after which a strategy for the preparation of dual-encapsulating perovskites using organic (polystyrene (PS)) and inorganic (ZrO2) materials was proposed, and the change in optical stability before and after encapsulation was investigated. The results show that the thermal stability of CsPbBr3@ZrO2/PS composite films (CFs) after the dual encapsulation was remarkably enhanced, and the assembled white LEDs still retain the initial emission intensity under prolonged high-power operation. In addition, the double encapsulation layer completely suppresses the ion leakage in CsPbBr3 and avoids damage to the ecosystem. It can be seen that this encapsulation strategy was capable of imparting excellent working stability to the perovskite material, which would clear the obstacles to commercial conversion.
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Affiliation(s)
- Jindou Shi
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Minqiang Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Hao Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Chen Zhang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Yongqiang Ji
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Junnan Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Yun Zhou
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research, Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, Xi'an Jiaotong University, 710049 Xi'an, China.
| | - Arshad Saleem Bhatti
- Centre for Micro and Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad, 44500, Pakistan
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Subramanian Y, Mishra B, Mishra RP, Kumar N, Bastia S, Anwar S, Gubendiran R, Chaudhary YS. Efficient degradation of endocrine-disrupting compounds by heterostructured perovskite photocatalysts and its correlation with their ferroelectricity. NEW J CHEM 2022. [DOI: 10.1039/d2nj00785a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterostructured perovskites photocatalysts for endocrine-disrupting compounds degradation and their ferroelectric properties.
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Affiliation(s)
- Yathavan Subramanian
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Department of Science & Humanities, University College of Engineering (Anna University), Arni-632 326, India
| | - Biswajit Mishra
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
| | - Rajashree P. Mishra
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Niharika Kumar
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Sweta Bastia
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Shahid Anwar
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Rameshkumar Gubendiran
- Department of Science & Humanities, University College of Engineering (Anna University), Arni-632 326, India
| | - Yatendra S. Chaudhary
- Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751 013, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
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Sun Y, Li Y, Li Z, Zhang D, Qiao W, Li Y, Niemantsverdriet H, Yin W, Su R. Flat and Stretched Delafossite α-AgGaO 2: Manipulating Redox Chemistry under Visible Light. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yue Sun
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
- SynCat@Beijing, Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone C#, Huairou District, Beijing 101407, China
| | - Yajiao Li
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Zhihao Li
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Dongsheng Zhang
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
- SynCat@Beijing, Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone C#, Huairou District, Beijing 101407, China
| | - Wei Qiao
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Yongwang Li
- SynCat@Beijing, Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone C#, Huairou District, Beijing 101407, China
| | - Hans Niemantsverdriet
- SynCat@Beijing, Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone C#, Huairou District, Beijing 101407, China
- SynCat@DIFFER, Syngaschem BV, 6336 HH Eindhoven, The Netherlands
| | - Wanjian Yin
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Ren Su
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy, Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
- SynCat@Beijing, Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone C#, Huairou District, Beijing 101407, China
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Yu X, Ng SF, Putri LK, Tan LL, Mohamed AR, Ong WJ. Point-Defect Engineering: Leveraging Imperfections in Graphitic Carbon Nitride (g-C 3 N 4 ) Photocatalysts toward Artificial Photosynthesis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006851. [PMID: 33909946 DOI: 10.1002/smll.202006851] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Graphitic carbon nitride (g-C3 N4 ) is a kind of ideal metal-free photocatalysts for artificial photosynthesis. At present, pristine g-C3 N4 suffers from small specific surface area, poor light absorption at longer wavelengths, low charge migration rate, and a high recombination rate of photogenerated electron-hole pairs, which significantly limit its performance. Among a myriad of modification strategies, point-defect engineering, namely tunable vacancies and dopant introduction, is capable of harnessing the superb structural, textural, optical, and electronic properties of g-C3 N4 to acquire an ameliorated photocatalytic activity. In view of the burgeoning development in this pacey field, a timely review on the state-of-the-art advancement of point-defect engineering of g-C3 N4 is of vital significance to advance the solar energy conversion. Particularly, insights into the intriguing roles of point defects, the synthesis, characterizations, and the systematic control of point defects, as well as the versatile application of defective g-C3 N4 -based nanomaterials toward photocatalytic water splitting, carbon dioxide reduction and nitrogen fixation will be presented in detail. Lastly, this review will conclude with a balanced perspective on the technical and scientific hindrances and future prospects. Overall, it is envisioned that this review will open a new frontier to uncover novel functionalities of defective g-C3 N4 -based nanostructures in energy catalysis.
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Affiliation(s)
- Xinnan Yu
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
| | - Sue-Faye Ng
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- Center of Excellence for NaNo Energy & Catalysis Technology (CONNECT), Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
| | - Lutfi Kurnianditia Putri
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau, Pinang, 14300, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary Platform of Advanced Engineering, Chemical Engineering Discipline, School of Engineering, Monash University, Selangor, Darul Ehsan, 47500, Malaysia
| | - Abdul Rahman Mohamed
- Low Carbon Economy (LCE) Research Group, School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Pulau, Pinang, 14300, Malaysia
| | - Wee-Jun Ong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- Center of Excellence for NaNo Energy & Catalysis Technology (CONNECT), Xiamen University Malaysia, Selangor, Darul Ehsan, 43900, Malaysia
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
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11
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Abstract
Formic acid (HCOOH) as an inexpensive and versatile reagent has gained broad
attention in the field of green synthesis and chemical industry. Formic acid acts not only as a
convenient and less toxic CO surrogate, but also as an excellent formylative reagent, C1
source and hydrogen donor in organic reactions. Over the past decades, many exciting contributions
have been made which have helped chemists to understand the mechanisms of these
reactions. The review will examine recent advances in the utilization of formic acid as an
economical, practical and multipurpose reactant in synthetic transformations.
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Affiliation(s)
- Xiao-Hua Cai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
| | - Su-qian Cai
- School of Pharmaceutical Sciences, Shenyang Pharmaceutical University, Shenyang 117004, China
| | - Bing Xie
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China
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12
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Yang Z, Xing Z, Feng Q, Jiang H, Zhang J, Xiao Y, Li Z, Chen P, Zhou W. Sandwich-like mesoporous graphite-like carbon nitride (Meso-g-C3N4)/WP/Meso-g-C3N4 laminated heterojunctions solar-driven photocatalysts. J Colloid Interface Sci 2020; 568:255-263. [DOI: 10.1016/j.jcis.2020.02.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 02/14/2020] [Accepted: 02/15/2020] [Indexed: 01/08/2023]
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13
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Talapaneni SN, Singh G, Kim IY, AlBahily K, Al-Muhtaseb AH, Karakoti AS, Tavakkoli E, Vinu A. Nanostructured Carbon Nitrides for CO 2 Capture and Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904635. [PMID: 31608512 DOI: 10.1002/adma.201904635] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/17/2019] [Indexed: 05/17/2023]
Abstract
Carbon nitride (CN), a 2D material composed of only carbon (C) and nitrogen (N), which are linked by strong covalent bonds, has been used as a metal-devoid and visible-light-active photocatalyst owing to its magnificent optoelectronic and physicochemical properties including suitable bandgap, adjustable energy-band positions, tailor-made surface functionalities, low cost, metal-free nature, and high thermal, chemical, and mechanical stabilities. CN-based materials possess a lot of advantages over conventional metal-based inorganic photocatalysts including ease of synthesis and processing, versatile functionalization or doping, flexibility for surface engineering, low cost, sustainability, and recyclability without any leaching of toxic metals from photocorrosion. Carbon nitrides and their hybrid materials have emerged as attractive candidates for CO2 capture and its reduction into clean and green low-carbon fuels and valuable chemical feedstock by using sustainable and intermittent renewable energy sources of sunlight and electricity through the heterogeneous photo(electro)catalysis. Here, the latest research results in this field are summarized, including implementation of novel functionalized nanostructured CNs and their hybrid heterostructures in meeting the stringent requirements to raise the efficiency of the CO2 reduction process by using state-of-the-art photocatalysis, electrocatalysis, photoelectrocatalysis, and feedstock reactions. The research in this field is primarily focused on advancement in the synthesis of nanostructured and functionalized CN-based hybrid heterostructured materials. More importantly, the recent past has seen a surge in studies focusing significantly on exploring the mechanism of their application perspectives, which include the behavior of the materials for the absorption of light, charge separation, and pathways for the transport of CO2 during the reduction process.
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Affiliation(s)
- Siddulu Naidu Talapaneni
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - In Young Kim
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Khalid AlBahily
- SABIC Corporate Research and Development Center at KAUST, Saudi Basic Industries Corporation, Thuwal, 23955, Saudi Arabia
| | - Ala'a H Al-Muhtaseb
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, P.O. Box 33, Al-Khod, Muscat, 123, Oman
| | - Ajay S Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ehsan Tavakkoli
- New South Wales Department of Primary Industries, Wagga Wagga Agricultural Institute, Pine Gully Road, Wagga Wagga, NSW, 2650, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, NSW, 2308, Australia
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