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Liu Q, You J, Xiong Y, Liu W, Song M, Ren J, Xue Q, Tian J, Zhang H, Wang X. Synergistic effect of interstitial phosphorus doping and MoS 2 modification over Zn 0.3Cd 0.7S for efficient photocatalytic H 2 production. J Colloid Interface Sci 2024; 675:772-782. [PMID: 39002228 DOI: 10.1016/j.jcis.2024.07.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/19/2024] [Accepted: 07/05/2024] [Indexed: 07/15/2024]
Abstract
ZnxCd1-xS photocatalysts have been widely investigated due to their diverse morphologies, suitable band gaps/band edge positions, and high electronic mobility. However, the sluggish charge separation and severe charge recombination impede the application of ZnxCd1-xS for hydrogen evolution reaction (HER). Herein, doping of phosphorus (P) atoms into Zn0.3Cd0.7S has been implemented to elevate S vacancies concentration as well as tune its Fermi level to be located near the impurity level of S vacancies, prolonging the lifetime of photogenerated electrons. Moreover, P doping induces a hybridized state in the bandgap, leading to an imbalanced charge distribution and a localized built-in electric field for effective separation of photogenerated charge carriers. Further construction of intimate heterojunctions between P-Zn0.3Cd0.7S and MoS2 accelerates surface redox reaction. Benefiting from the above merits, 1 % MoS2/P-Zn0.3Cd0.7S exhibits a high hydrogen production rate of 30.65 mmol·g-1·h-1 with AQE of 22.22 % under monochromatic light at 370 nm, exceeding most ZnxCd1-xS based photocatalysts reported so far. This work opens avenues to fabricate examplary photocatalysts for solar energy conversion and beyond.
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Affiliation(s)
- Qian Liu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Junhua You
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, PR China.
| | - Ya Xiong
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China.
| | - Wendi Liu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Mingfang Song
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Jiali Ren
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China
| | - Qingzhong Xue
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China.
| | - Jian Tian
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, PR China.
| | - Hangzhou Zhang
- Department of Operating Theatre; Department of Orthopedics; Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University; Shenyang Sports Medicine Clinical Medical Research Center, Shenyang 110870, Liaoning, PR China
| | - Xiaoxue Wang
- Department of Operating Theatre; Department of Orthopedics; Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University; Shenyang Sports Medicine Clinical Medical Research Center, Shenyang 110870, Liaoning, PR China.
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Hoffmeister D, Finger S, Fiedler L, Ma T, Körner A, Zlatar M, Fritsch B, Bodnar KW, Carl S, Götz A, Zubiri BA, Will J, Spiecker E, Cherevko S, Freiberg ATS, Mayrhofer KJJ, Thiele S, Hutzler A, van Pham C. Photodeposition-Based Synthesis of TiO 2@IrO x Core-Shell Catalyst for Proton Exchange Membrane Water Electrolysis with Low Iridium Loading. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402991. [PMID: 38874424 PMCID: PMC11321668 DOI: 10.1002/advs.202402991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/17/2024] [Indexed: 06/15/2024]
Abstract
The widespread application of green hydrogen production technologies requires cost reduction of crucial elements. To achieve this, a viable pathway to reduce the iridium loading in proton exchange membrane water electrolysis (PEMWE) is explored. Herein, a scalable synthesis method based on a photodeposition process for a TiO2@IrOx core-shell catalyst with a reduced iridium content as low as 40 wt.% is presented. Using this synthesis method, titania support particles homogeneously coated with a thin iridium oxide shell of only 2.1 ± 0.4 nm are obtained. The catalyst exhibits not only high ex situ activity, but also decent stability compared to commercially available catalysts. Furthermore, the unique core-shell structure provides a threefold increased electrical powder conductivity compared to structures without the shell. In addition, the low iridium content facilitates the fabrication of sufficiently thick catalyst layers at decreased iridium loadings mitigating the impact of crack formation in the catalyst layer during PEMWE operation. It is demonstrated that the novel TiO2@IrOx core-shell catalyst clearly outperforms the commercial reference in single-cell tests with an iridium loading below 0.3 mgIr cm-2 exhibiting a superior iridium-specific power density of 17.9 kW gIr -1 compared to 10.4 kW gIr -1 for the commercial reference.
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Affiliation(s)
- Darius Hoffmeister
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Selina Finger
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Lena Fiedler
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Tien‐Ching Ma
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Andreas Körner
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
| | - Matej Zlatar
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Birk Fritsch
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
| | - Kerstin Witte Bodnar
- Fraunhofer Institute for Microstructure of Materials and Systems (IMWS)06120HalleGermany
- Fraunhofer Center for Silicon Photovoltaics06120HalleGermany
| | - Simon Carl
- Institute of Micro‐ and Nanostructure Research (IMN) and Center for Nanoanalysis and Electron Microscopy (CENEM)Interdisciplinary Center for Nanostructured Films (IZNF)Friedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Alexander Götz
- Institute of Micro‐ and Nanostructure Research (IMN) and Center for Nanoanalysis and Electron Microscopy (CENEM)Interdisciplinary Center for Nanostructured Films (IZNF)Friedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Benjamin Apeleo Zubiri
- Institute of Micro‐ and Nanostructure Research (IMN) and Center for Nanoanalysis and Electron Microscopy (CENEM)Interdisciplinary Center for Nanostructured Films (IZNF)Friedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Johannes Will
- Institute of Micro‐ and Nanostructure Research (IMN) and Center for Nanoanalysis and Electron Microscopy (CENEM)Interdisciplinary Center for Nanostructured Films (IZNF)Friedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Erdmann Spiecker
- Institute of Micro‐ and Nanostructure Research (IMN) and Center for Nanoanalysis and Electron Microscopy (CENEM)Interdisciplinary Center for Nanostructured Films (IZNF)Friedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Serhiy Cherevko
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
| | - Anna T. S. Freiberg
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Karl J. J. Mayrhofer
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Simon Thiele
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
- Department Chemical and Biological EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg91058ErlangenGermany
| | - Andreas Hutzler
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
| | - Chuyen van Pham
- Forschungszentrum Jülich GmbHHelmholtz Institute Erlangen‐Nürnberg for Renewable Energy91058ErlangenGermany
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3
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Pan H, Li J, Wang Y, Xia Q, Qiu L, Zhou B. Solar-Driven Biomass Reforming for Hydrogen Generation: Principles, Advances, and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402651. [PMID: 38816938 PMCID: PMC11304308 DOI: 10.1002/advs.202402651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/23/2024] [Indexed: 06/01/2024]
Abstract
Hydrogen (H2) has emerged as a clean and versatile energy carrier to power a carbon-neutral economy for the post-fossil era. Hydrogen generation from low-cost and renewable biomass by virtually inexhaustible solar energy presents an innovative strategy to process organic solid waste, combat the energy crisis, and achieve carbon neutrality. Herein, the progress and breakthroughs in solar-powered H2 production from biomass are reviewed. The basic principles of solar-driven H2 generation from biomass are first introduced for a better understanding of the reaction mechanism. Next, the merits and shortcomings of various semiconductors and cocatalysts are summarized, and the strategies for addressing the related issues are also elaborated. Then, various bio-based feedstocks for solar-driven H2 production are reviewed with an emphasis on the effect of photocatalysts and catalytic systems on performance. Of note, the concurrent generation of value-added chemicals from biomass reforming is emphasized as well. Meanwhile, the emerging photo-thermal coupling strategy that shows a grand prospect for maximally utilizing the entire solar energy spectrum is also discussed. Further, the direct utilization of hydrogen from biomass as a green reductant for producing value-added chemicals via organic reactions is also highlighted. Finally, the challenges and perspectives of photoreforming biomass toward hydrogen are envisioned.
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Affiliation(s)
- Hu Pan
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Jinglin Li
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Yangang Wang
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
| | - Qineng Xia
- College of BiologicalChemical Science and EngineeringJiaxing University899 Guangqiong RoadJiaxingZhejiang314001China
| | - Liang Qiu
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
| | - Baowen Zhou
- Key Laboratory for Power Machinery and Engineering of Ministry of EducationResearch Center for Renewable Synthetic FuelSchool of Mechanical EngineeringShanghai Jiao Tong University800 Dongchuan RoadShanghai200240China
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4
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Zhang X, Puttaswamy M, Bai H, Hou B, Kumar Verma S. CdS/ZnS core-shell nanorod heterostructures co-deposited with ultrathin MoS 2 cocatalyst for competent hydrogen evolution under visible-light irradiation. J Colloid Interface Sci 2024; 665:430-442. [PMID: 38485632 DOI: 10.1016/j.jcis.2024.03.066] [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: 01/29/2024] [Revised: 03/04/2024] [Accepted: 03/10/2024] [Indexed: 04/17/2024]
Abstract
Hydrogen generation via semiconductor photocatalysts has gained significant attention as a sustainable fuel generation process. To demonstrate the performance of nanoscale core-shell heterostructure in photocatalytic hydrogen production, we have fabricated CdS nanorods coated with ZnS photocatalyst via wet-chemical reaction followed by deposition of ultrathin MoS2 nanosheets by photo reduction process. The effect of ZnS content and suitable amount of MoS2 loading over the visible-light induced photocatalytic hydrogen evolution was examined in Na2S and Na2SO3 aqueous solutions. Interestingly, it is apparent that a close connection (or heterojunction) between CdS and ZnS is believed to easily tunnel the charge carriers to the surplus surface states, making its electrons and holes energetically favourable to transfer from ZnS to MoS2 for photocatalytic reactions and subsequently, enhances the H2 evolution activity in CdS/ZnS type I core-shell heterostructures. The optimal MoS2 concentration is resolved to be 7 mol% and the subsequent visible-light induced H2 generation rate was 13589 μmol h-1g-1, which is 19 and 158 fold higher than pristine CdS and ZnS respectively. The probable photocatalytic mechanism of CdS/ZnS type I core-shell heterostructure with MoS2 cocatalyst is proposed. Our inexpensive and convenient preparation strategy may offer novel prospects in the engineering of desirable nanoheterostructures with better performance.
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Affiliation(s)
- Xingyu Zhang
- School of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, PR China
| | - Madhusudan Puttaswamy
- Department of Civil and Environmental Engineering, Environmental Materials Laboratory, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
| | - Haiqiang Bai
- School of New Energy, Yulin University, Yulin 719000, Shaanxi, PR China
| | - Bofang Hou
- School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, PR China
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5
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Kurnosenko SA, Silyukov OI, Rodionov IA, Baeva AS, Burov AA, Kulagina AV, Novikov SS, Zvereva IA. Hydrothermally Synthesized ZnCr- and NiCr-Layered Double Hydroxides as Hydrogen Evolution Photocatalysts. Molecules 2024; 29:2108. [PMID: 38731599 PMCID: PMC11085494 DOI: 10.3390/molecules29092108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/30/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
The layered double hydroxides (LDHs) of transition metals are of great interest as building blocks for the creation of composite photocatalytic materials for hydrogen production, environmental remediation and other applications. However, the synthesis of most LDHs is reported only by the conventional coprecipitation method, which makes it difficult to control the catalyst's crystallinity. In the present study, ZnCr- and NiCr-LDHs have been successfully prepared using a facile hydrothermal approach. Varying the hydrothermal synthesis conditions allowed us to obtain target products with a controllable crystallite size in the range of 2-26 nm and a specific surface area of 45-83 m2∙g-1. The LDHs synthesized were investigated as photocatalysts of hydrogen generation from aqueous methanol. It was revealed that the photocatalytic activity of ZnCr-LDH samples grows monotonically with the increase in their average crystallite size, while that of NiCr-LDH ones reaches a maximum with intermediate-sized crystallites and then decreases due to the specific surface area reduction. The concentration dependence of the hydrogen evolution activity is generally consistent with the standard Langmuir-Hinshelwood model for heterogeneous catalysis. At a methanol content of 50 mol. %, the rate of hydrogen generation over ZnCr- and NiCr-LDHs reaches 88 and 41 μmol∙h-1∙g-1, respectively. The hydrothermally synthesized LDHs with enhanced crystallinity may be of interest for further fabrication of their nanosheets being promising components of new composite photocatalysts.
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Affiliation(s)
| | - Oleg I. Silyukov
- Department of Chemical Thermodynamics and Kinetics, Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia; (S.A.K.); (I.A.R.); (A.S.B.); (A.A.B.); (A.V.K.); (S.S.N.); (I.A.Z.)
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6
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Li X, Wu Z, Song X, Li D, Liu J, Zhang J. WO 3 Nanoplates Decorated with Au and SnO 2 Nanoparticles for Real-Time Detection of Foodborne Pathogens. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:719. [PMID: 38668213 PMCID: PMC11054436 DOI: 10.3390/nano14080719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 04/29/2024]
Abstract
Nowadays, metal oxide semiconductor gas sensors have diverse applications ranging from human health to smart agriculture with the development of Internet of Things (IoT) technologies. However, high operating temperatures and an unsatisfactory detection capability (high sensitivity, fast response/recovery speed, etc.) hinder their integration into the IoT. Herein, a ternary heterostructure was prepared by decorating WO3 nanoplates with Au and SnO2 nanoparticles through a facial photochemical deposition method. This was employed as a sensing material for 3-hydroxy-2-butanone (3H-2B), a biomarker of Listeria monocytogenes. These Au/SnO2-WO3 nanoplate-based sensors exhibited an excellent response (Ra/Rg = 662) to 25 ppm 3H-2B, which was 24 times higher than that of pure WO3 nanoplates at 140 °C. Moreover, the 3H-2B sensor showed an ultrafast response and recovery speed to 25 ppm 3H-2B as well as high selectivity. These excellent sensing performances could be attributed to the rich Au/SnO2-WO3 active interfaces and the excellent transport of carriers in nanoplates. Furthermore, a wireless portable gas sensor equipped with the Au/SnO2-WO3 nanoplates was assembled, which was tested using 3H-2B with known concentrations to study the possibilities of real-time gas monitoring in food quality and safety.
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Affiliation(s)
- Xueyan Li
- School of Materials Science and Engineering, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081, China (J.Z.)
| | - Zeyi Wu
- School of Materials Science and Engineering, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081, China (J.Z.)
| | - Xiangyu Song
- School of Materials Science and Engineering, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081, China (J.Z.)
| | - Denghua Li
- Key Laboratory of Agricultural Information Service Technology of Ministry of Agriculture, Agricultural Information Institute of Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jiajia Liu
- School of Materials Science and Engineering, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081, China (J.Z.)
| | - Jiatao Zhang
- School of Materials Science and Engineering, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Beijing Institute of Technology, Beijing 100081, China (J.Z.)
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, Beijing Institute of Technology, Beijing 100081, China
- MOE Key Laboratory of Cluster Science, Beijing Institute of Technology, Beijing 100081, China
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7
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Yang X, Sun W, Li B, Dong Y, Huang X, Hu C, Chen M, Li Y, Ding Y. P-doped Mn 0.5Cd 0.5S coupled with cobalt porphyrin as co-catalyst for the photocatalytic water splitting without using sacrificial agents. J Colloid Interface Sci 2024; 655:779-788. [PMID: 37976751 DOI: 10.1016/j.jcis.2023.11.051] [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: 10/16/2023] [Revised: 11/04/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
Photocatalytic water splitting over semiconductors is an important approach to solve the energy demand of human beings. Most photocatalytic H2 generation reactions are conducted in the presence of sacrificial agent. However, the use of sacrificial reagents increases the cost of hydrogen generation. Realizing photocatalytic water splitting for hydrogen production without the addition of sacrificial agents is a major challenge for photocatalysts. The porphyrin MTCPPOMe and P doped MnxCd1-xS make a significant contribution in facilitating the MnxCd1-xS photocatalytic pure water splitting to H2 reaction. Herein, a novel MTCPPOMe/P-MnxCd1-xS (M = 2H, Fe, Co, Ni) composite catalyst which can efficiently split pure water without using sacrificial agents is developed. As a result, the H2 generation rate of CoTCPPOMe/P-Mn0.5Cd0.5S is as high as 2.10 μmol h-1, which is 9.1 and 4.2 times higher than that of Mn0.5Cd0.5S (MCS) and P-Mn0.5Cd0.5S (P-MCS), respectively. P doped MnxCd1-xS inhibits the recombination of photogenerated carriers, and introduction of MTCPPOMe as co-catalyst enhances the reduction capacity. In summary, an efficient and economical photocatalystis prepared for pure water splitting to prepare hydrogen.
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Affiliation(s)
- Xu Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Wanjun Sun
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China
| | - Bonan Li
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yinjuan Dong
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xi Huang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chunlian Hu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Mengxue Chen
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Yuanyuan Li
- Department of Biological and Chemical Engineering, Chongqing University of Education, Chongqing 400067, China
| | - Yong Ding
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China; State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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8
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Wu Y, Wang Z, Yan Y, Wei Y, Wang J, Shen Y, Yang K, Weng B, Lu K. Rational Photodeposition of Cobalt Phosphate on Flower-like ZnIn 2S 4 for Efficient Photocatalytic Hydrogen Evolution. Molecules 2024; 29:465. [PMID: 38257378 PMCID: PMC10821521 DOI: 10.3390/molecules29020465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/12/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024] Open
Abstract
The high electrons and holes recombination rate of ZnIn2S4 significantly limits its photocatalytic performance. Herein, a simple in situ photodeposition strategy is adopted to introduce the cocatalyst cobalt phosphate (Co-Pi) on ZnIn2S4, aiming at facilitating the separation of electron-hole by promoting the transfer of photogenerated holes of ZnIn2S4. The study reveals that the composite catalyst has superior photocatalytic performance than blank ZnIn2S4. In particular, ZnIn2S4 loaded with 5% Co-Pi (ZnIn2S4/5%Co-Pi) has the best photocatalytic activity, and the H2 production rate reaches 3593 μmol·g-1·h-1, approximately double that of ZnIn2S4 alone. Subsequent characterization data demonstrate that the introduction of the cocatalyst Co-Pi facilitates the transfer of ZnIn2S4 holes, thus improving the efficiency of photogenerated carrier separation. This investigation focuses on the rational utilization of high-content and rich cocatalysts on earth to design low-cost and efficient composite catalysts to achieve sustainable photocatalytic hydrogen evolution.
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Affiliation(s)
- Yonghui Wu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Zhipeng Wang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Yuqing Yan
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Yu Wei
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Jun Wang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Yunsheng Shen
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Kai Yang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Bo Weng
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
| | - Kangqiang Lu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
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9
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Wang K, Guan Z, Liang X, Song S, Lu P, Zhao C, Yue L, Zeng Z, Wu Y, He Y. Remarkably enhanced catalytic performance in CoO x/Bi 4Ti 3O 12 heterostructures for methyl orange degradation via piezocatalysis and piezo-photocatalysis. ULTRASONICS SONOCHEMISTRY 2023; 100:106616. [PMID: 37769589 PMCID: PMC10550776 DOI: 10.1016/j.ultsonch.2023.106616] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023]
Abstract
A novel heterojunction composite of CoOx/Bi4Ti3O12 was synthesized through a combination of molten salt and photodeposition methods. The optimal sample exhibited superior performance in the piezocatalytic degradation of methyl orange (MO) dye with a degradation rate of 1.09 h-1, which was 2.4 times higher than that of pristine Bi4Ti3O12. Various characterizations were conducted to reveal the fundamental nature accountable for the outstanding piezocatalytic performance of CoOx/Bi4Ti3O12. The investigation of the band structure indicated that the CoOx/Bi4Ti3O12 composite formed a type-I p-n heterojunction structure, with CoOx acting as a hole trapper to effectively separate and transfer piezogenerated carriers. Significantly, the MO degradation rate of the best CoOx/Bi4Ti3O12 sample further increased to 2.96 h-1 under combined ultrasonic vibration and simulated sunlight. The synergy between piezocatalysis and photocatalysis can be ascribed to the following factors. The photoexcitation process ensures the sufficient generation of charge carriers in the CoOx/Bi4Ti3O12, while the piezoelectric field within Bi4Ti3O12 promotes the separation of electron-hole pairs in the bulk phase. Furthermore, the heterojunction structure between Bi4Ti3O12 and CoOx significantly facilitates the surface separation of charge carriers. This increased involvement of free electrons and holes in the reaction leads to a remarkable enhancement in catalytic MO degradation. This work contributes to the understanding of the coupling mechanism between the piezoelectric effect and photocatalysis, and also provides a promising strategy for the development of efficient catalysts for wastewater treatment.
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Affiliation(s)
- Kaiqi Wang
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Ziying Guan
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Xiaoya Liang
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Shuyue Song
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Pengyu Lu
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Chunran Zhao
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Lin Yue
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Yingbin Road 688, Jinhua 321004, China
| | - Zhihao Zeng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Yingbin Road 688, Jinhua 321004, China
| | - Ying Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Yingbin Road 688, Jinhua 321004, China.
| | - Yiming He
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China; Key Laboratory of Solid State Optoelectronic Devices of Zhejiang province, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China.
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10
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Vattikuti SVP, Goud JP, Rosaiah P, Prasad PR, Tighezza AM, Shim J. Enhanced Sunlight-Powered Photocatalysis and Methanol Oxidation Activities of Co 3O 4-Embedded Polymeric Carbon Nitride Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2508. [PMID: 37764537 PMCID: PMC10534687 DOI: 10.3390/nano13182508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
The contamination of water by organic substances poses a significant global challenge. To address these pressing environmental and energy concerns, this study emphasizes the importance of developing effective photocatalysts powered by sunlight. In this research, we achieved the successful synthesis of a novel photocatalyst comprised of polymeric carbon nitride (CN) nanosheets embedded with Co3O4 material, denoted as CN-CO. The synthesis process involved subjecting the mixture to 500 °C for 10 h in a muffle furnace. Structural and morphological analyses confirmed the formation of CN-CO nanostructures, which exhibited remarkable enhancements in photocatalytic activity for the removal of methylene blue (MB) pollutants under replicated sunlight. After 90 min of exposure, the degradation rate reached an impressive 98.9%, surpassing the degradation rates of 62.3% for pure CN and 89.32% for pure Co3O4 during the same time period. This significant improvement can be attributed to the exceptional light captivation capabilities and efficient charge separation abilities of the CN-CO nanostructures. Furthermore, the CN-CO nanostructures demonstrated impressive photocurrent density-time (j-t) activity under sunlight, with a photocurrent density of 2.51 μA/cm2 at 0.5 V. The CN-CO nanostructure exhibited excellent methanol oxidation reaction (MOR) activity with the highest current density of 83.71 mA/cm2 at an optimal 2 M methanol concentration, benefiting from the synergy effects of CN and CO in the nanostructure. Overall, this study presents a straightforward and effective method for producing CN-based photocatalysts decorated with semiconductor nanosized materials. The outcomes of this research shed light on the design of nanostructures for energy-related applications, while also providing insights into the development of efficient photocatalytic materials for addressing environmental challenges.
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Affiliation(s)
| | - J. Pundareekam Goud
- Department of Physics, Koneru Lakshmaiah Education Foundation, Bowrampet, Hyderabad 500043, Telangana, India
| | - P. Rosaiah
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
- Department of Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai 602105, Tamil Nadu, India
| | - P. Reddy Prasad
- Department of Chemistry, Institute of Aeronautical Engineering, Hyderabad 500043, Telangana, India
| | - Ammar M. Tighezza
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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11
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Chen G, Li R, Huang L. Advances in photochemical deposition for controllable synthesis of heterogeneous catalysts. NANOSCALE 2023; 15:13909-13931. [PMID: 37581402 DOI: 10.1039/d3nr02475j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Photochemical deposition has been attracting increasing attention for preparing nano-catalysts due to its mild reaction conditions, simplicity, green and safe characteristics, and potential for various applications in photocatalysis, thermal catalysis, and electrocatalysis. In this review, we provide an overview of recent advances in photochemical deposition methods for fabricating heterogeneous catalysts, and summarize the factors that influence the nucleation and growth of metal nanoparticles during the photochemical process. Specifically, we focus on the various factors including surface defects, crystal facets, surface properties and the surface plasmon effect on the size, morphology and distribution control of metal and metal oxide nanoparticles on semiconductors. The control of the photogenerated charges and the triggered photochemical reactions have been proved to be significant in the photochemical deposition process. Besides, the applications of the obtained catalytic materials in thermal catalysis and electrocatalysis is highlighted, considering that many reviews have covered photocatalysis applications. We first introduce the principle of photodeposition, nucleation and growth theory, and factors affecting photodeposition. Then, we introduce photodeposition methods that can achieve "controlled" photodeposition from a strategic perspective. Finally, we summarize the fruitful results of controlled photodeposition and provide future prospects for the development of controlled photodeposition technologies and methods, as well as the deepening and expansion of applications.
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Affiliation(s)
- Guoli Chen
- Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China.
| | - Rengui Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.
| | - Lei Huang
- Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China.
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12
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Recent Developments and Perspectives of Cobalt Sulfide-Based Composite Materials in Photocatalysis. Catalysts 2023. [DOI: 10.3390/catal13030544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Abstract
Photocatalysis, as an inexpensive and safe technology to convert solar energy, is essential for the efficient utilization of sustainable renewable energy sources. Earth-abundant cobalt sulfide-based composites have generated great interest in the field of solar fuel conversion because of their cheap, diverse structures and facile preparation. Over the past 10 years, the number of reports on cobalt sulfide-based photocatalysts has increased year by year, and more than 500 publications on the application of cobalt sulfide groups in photocatalysis can be found in the last three years. In this review, we initially summarize the four common strategies for preparing cobalt sulfide-based composite materials. Then, the multiple roles of cobalt sulfide-based cocatalysts in photocatalysis have been discussed. After that, we present the latest progress of cobalt sulfide in four fields of photocatalysis application, including photocatalytic hydrogen production, carbon dioxide reduction, nitrogen fixation, and photocatalytic degradation of pollutants. Finally, the development prospects and challenges of cobalt sulfide-based photocatalysts are discussed. This review is expected to provide useful reference for the construction of high-performance cobalt sulfide-based composite photocatalytic materials for sustainable solar-chemical energy conversion.
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13
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Jing H, Li H, Yue J, Fan S, Yao B, Liu S, Fang Z, Wu R, Yang L, Wei S. Synergistic effects of the Rh-S bond and spatially separated dual cocatalysts on photocatalytic overall water splitting activity of ZnIn 2S 4 nanosheets under visible light irradiation. Dalton Trans 2023; 52:2924-2927. [PMID: 36810646 DOI: 10.1039/d3dt00050h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Photodeposition of dual-cocatalysts Pt-Cr or Rh-Cr on the surface of ZnIn2S4 is used to achieve overall water splitting. Compared with the hybrid loading of the Pt element and Cr element, the formation of the Rh-S bond results in space separation of the Rh element and Cr element. The Rh-S bond and space separation of cocatalysts promote the transfer of bulk carriers to the surface and inhibit self-corrosion.
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Affiliation(s)
- Haitong Jing
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, China. .,Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China. .,Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang 830017, China
| | - Huili Li
- College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Jianyong Yue
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, China. .,Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China. .,Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang 830017, China
| | - Shiyan Fan
- Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China.
| | - Bo Yao
- Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China.
| | - Shiyan Liu
- Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China.
| | - Zebo Fang
- Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China.
| | - Rong Wu
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, China. .,Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang 830017, China
| | - Linyu Yang
- School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, China. .,Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, Xinjiang 830017, China
| | - Shunhang Wei
- Zhejiang Engineering Research Center of MEMS, Shaoxing University, Shaoxing 312000, China.
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14
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Cocatalysts for Photocatalytic Overall Water Splitting: A Mini Review. Catalysts 2023. [DOI: 10.3390/catal13020355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Photocatalyst overall water splitting is usually restricted by low carrier separation efficiency and a slow surface reaction rate. Cocatalysts provide a satisfactory solution to significantly improve photocatalytic performance. In this review, some recent advances in cocatalysts for photocatalytic overall water splitting are gathered and divided into groups. Firstly, the loading method of the cocatalyst is introduced. Then, the role of the cocatalyst applied for the photocatalytic overall water splitting process is further discussed. Finally, the key challenges and possible research directions of photocatalytic overall water splitting are proposed. This review is expected to promote research on the design of efficient cocatalysts in photocatalytic systems for overall water splitting.
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15
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Zhang J, Zhu B, Zhang L, Yu J. Femtosecond transient absorption spectroscopy investigation into the electron transfer mechanism in photocatalysis. Chem Commun (Camb) 2023; 59:688-699. [PMID: 36598049 DOI: 10.1039/d2cc06300j] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Femtosecond transient absorption spectroscopy (fs-TAS) is a powerful technique for monitoring the electron transfer kinetics in photocatalysis. Several important works have successfully elucidated the electron transfer mechanism in heterojunction photocatalysts (HPs) using fs-TAS measurements, and thus a timely summary of recent advances is essential. This feature article starts with a thorough interpretation of the operating principle of fs-TAS equipment, and the fundamentals of the fs-TAS spectra. Subsequently, the applications of fs-TAS in analyzing the dynamics of photogenerated carriers in semiconductor/metal HPs, semiconductor/carbon HPs, semiconductor/semiconductor HPs, and multicomponent HPs are discussed in sequence. Finally, the significance of fs-TAS in revealing the ultrafast interfacial electron transfer process in HPs is summarized, and further research on the applications of fs-TAS in photocatalysis is proposed. This feature article will provide deep insight into the mechanism of the enhanced photocatalytic performance of HPs from the perspective of electron transfer kinetics.
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Affiliation(s)
- Jianjun Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, P. R. China.
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, P. R. China.
| | - Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, P. R. China.
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan 430078, P. R. China.
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16
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Photocatalytic Hydrogen Generation from Aqueous Methanol Solution over n-Butylamine-Intercalated Layered Titanate H2La2Ti3O10: Activity and Stability of the Hybrid Photocatalyst. Catalysts 2022. [DOI: 10.3390/catal12121556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
The stability of platinized n-butylamine-intercalated layered titanate H2La2Ti3O10 during the process of photocatalytic hydrogen production from aqueous methanol under UV irradiation has been thoroughly investigated by means of XRD, CHN, TG, 13C NMR, BET, SEM and GC-MS analysis. It was revealed that n-butylamine completely abandons the interlayer space and transforms into n-butyraldehyde within 3 h of the reaction, while the particle morphology and specific surface area of the photocatalyst are preserved. The resulting solid phase contains carbon in at least two different oxidation states, which are attributed to the intermediate products of methanol oxidation bound to the perovskite matrix. The activity of the photocatalyst formed in this way is stable in time and strongly depends on the medium pH, which is not typical of either the parent H2La2Ti3O10 or TiO2. An approximate linear equation φ ≈ 29−2∙pH holds for the apparent quantum efficiency of hydrogen production in the 220–340 nm range at 1 mol. % methanol concentration. In the acidic medium, the photocatalyst under study outperforms the platinized H2La2Ti3O10 by more than one order of magnitude. The variation in methanol concentration allowed a maximum quantum efficiency of hydrogen production of 44% at 10 mol. % to be reached.
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17
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Controlled photodeposition of Pt onto TiO2-g-C3N4 systems for photocatalytic hydrogen production. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.11.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Recent Progress in Photocatalytic Removal of Environmental Pollution Hazards in Water Using Nanostructured Materials. SEPARATIONS 2022. [DOI: 10.3390/separations9100264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Water pollution has become a critical issue because of the Industrial Revolution, growing populations, extended droughts, and climate change. Therefore, advanced technologies for wastewater remediation are urgently needed. Water contaminants are generally classified as microorganisms and inorganic/organic pollutants. Inorganic pollutants are toxic and some of them are carcinogenic materials, such as cadmium, arsenic, chromium, cadmium, lead, and mercury. Organic pollutants are contained in various materials, including organic dyes, pesticides, personal care products, detergents, and industrial organic wastes. Nanostructured materials could be potential candidates for photocatalytic reduction and for photodegradation of organic pollutants in wastewater since they have unique physical, chemical, and optical properties. Enhanced photocatalytic performance of nanostructured semiconductors can be achieved using numerous techniques; nanostructured semiconductors can be doped with different species, transition metals, noble metals or nonmetals, or a luminescence agent. Furthermore, another technique to enhance the photocatalytic performance of nanostructured semiconductors is doping with materials that have a narrow band gap. Nanostructure modification, surface engineering, and heterojunction/homojunction production all take significant time and effort. In this review, I report on the synthesis and characterization of nanostructured materials, and we discuss the photocatalytic performance of these nanostructured materials in reducing environmental pollutants.
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