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Gnanasekar P, Peramaiah K, Zhang H, Alsayoud IG, Subbiah AS, Babics M, Ng TK, Gan Q, De Wolf S, Huang KW, Ooi BS. Solar-Powered Gram-Scale Ammonia Production from Nitrate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404249. [PMID: 38953366 DOI: 10.1002/smll.202404249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 06/20/2024] [Indexed: 07/04/2024]
Abstract
The photoelectrochemical (PEC) method has the potential to be an attractive route for converting and storing solar energy as chemical bonds. In this study, a maximum NH3 production yield of 1.01 g L-1 with a solar-to-ammonia conversion efficiency of 8.17% through the photovoltaic electrocatalytic (PV-EC) nitrate (NO3 -) reduction reaction (NO3 -RR) is achieved, using silicon heterojunction solar cell technology. Additionally, the effect of tuning the operation potential of the PV-EC system and its influence on product selectivity are systematically investigated. By using this unique external resistance tuning approach in the PV-EC system, ammonia production through nitrate reduction performance from 96 to 360 mg L-1 is enhanced, a four-fold increase. Furthermore, the NH3 is extracted as NH4Cl powder using acid stripping, which is essential for storing chemical energy. This work demonstrates the possibility of tuning product selectivity in PV-EC systems, with prospects toward pilot scale on value-added product synthesis.
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Affiliation(s)
- Paulraj Gnanasekar
- Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Karthik Peramaiah
- KAUST Catalysis Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Huafan Zhang
- Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Ibrahim G Alsayoud
- Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Anand S Subbiah
- KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Maxime Babics
- KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Tien Khee Ng
- Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Qiaoqiang Gan
- Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Stefaan De Wolf
- KAUST Photovoltaics Laboratory, KAUST Solar Center, Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Kuo-Wei Huang
- KAUST Catalysis Center, Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
- Department of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Boon S Ooi
- Photonics Laboratory, Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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2
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Yan C, Tang Z, Wang L, Piao Z, Wang H, Zhang Y. Covalently Linking Reduced Graphene Oxide Facilitated Electrodeposition of MoS 2 on Silicon Pyramidal Photocathode To Enhance Hydrogen Evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12427-12436. [PMID: 38804701 DOI: 10.1021/acs.langmuir.4c00679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
In recent years, increasing attention has been paid to photoelectrochemical (PEC) hydrogen production owing to the utilization of sustainable solar energy and its promising performance. Silicon-based composites are generally considered ideal materials for PEC hydrogen production. However, slow reaction kinetics and poor stability are still key factors hindering the development of silicon-based photoelectrocatalysts. Herein, we present an n+-p Si pyramidal photocathode assembly method to load reduced graphene oxide (rGO) onto the surface of the n+-p Si pyramid by covalently linking (Si/rGO). rGO is utilized as a conductive layer to reduce the interfacial charge-transfer resistance. Then, MoS2 can be successfully electrodeposited on the surface of Si/rGO to form the Si/rGO/MoS2 composite, which possesses excellent PEC hydrogen evolution performance with a high and stable photocurrent of -41.6 mA cm-2 and a hydrogen evolution rate of about 18.1 μmol min-1 cm-2 under 0 V (vs RHE). The covalently linking rGO layer effectively enhances the transfer of photogenerated carriers between the Si substrate and MoS2. MoS2 provides abundant hydrogen evolution active sites, which accelerate the surface reaction kinetics, as well as a protective layer for the Si pyramidal array structure. This work provides a low-cost, convenient, and efficient way of preparing silicon-based photocathodes.
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Affiliation(s)
- Chenyu Yan
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Zheng Tang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Linjie Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Zhe Piao
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Honggui Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
| | - Ya Zhang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225127, China
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3
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Cheng J, Jin Y, Zhao J, Jing Q, Gu B, Wei J, Yi S, Li M, Nie W, Qin Q, Zhang D, Zheng G, Che R. From VIB- to VB-Group Transition Metal Disulfides: Structure Engineering Modulation for Superior Electromagnetic Wave Absorption. NANO-MICRO LETTERS 2023; 16:29. [PMID: 37994956 PMCID: PMC10667208 DOI: 10.1007/s40820-023-01247-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/11/2023] [Indexed: 11/24/2023]
Abstract
The laminated transition metal disulfides (TMDs), which are well known as typical two-dimensional (2D) semiconductive materials, possess a unique layered structure, leading to their wide-spread applications in various fields, such as catalysis, energy storage, sensing, etc. In recent years, a lot of research work on TMDs based functional materials in the fields of electromagnetic wave absorption (EMA) has been carried out. Therefore, it is of great significance to elaborate the influence of TMDs on EMA in time to speed up the application. In this review, recent advances in the development of electromagnetic wave (EMW) absorbers based on TMDs, ranging from the VIB group to the VB group are summarized. Their compositions, microstructures, electronic properties, and synthesis methods are presented in detail. Particularly, the modulation of structure engineering from the aspects of heterostructures, defects, morphologies and phases are systematically summarized, focusing on optimizing impedance matching and increasing dielectric and magnetic losses in the EMA materials with tunable EMW absorption performance. Milestones as well as the challenges are also identified to guide the design of new TMDs based dielectric EMA materials with high performance.
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Affiliation(s)
- Junye Cheng
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China.
| | - Yongheng Jin
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Jinghan Zhao
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Qi Jing
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Bailong Gu
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Jialiang Wei
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Shenghui Yi
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Mingming Li
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Wanli Nie
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China
| | - Qinghua Qin
- Department of Materials Science, Shenzhen MSU-BIT University, Shenzhen, 517182, People's Republic of China.
| | - Deqing Zhang
- School of Materials Science and Engineering, Qiqihar University, Qiqihar, 161006, People's Republic of China
| | - Guangping Zheng
- Department of Mechanical Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People's Republic of China.
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200438, People's Republic of China.
- Zhejiang Laboratory, Hangzhou, 311100, People's Republic of China.
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Hu L, Wang J, Wang H, Zhang Y, Han J. Gold-Promoted Electrodeposition of Metal Sulfides on Silicon Nanowire Photocathodes To Enhance Solar-Driven Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15449-15457. [PMID: 36921238 DOI: 10.1021/acsami.2c22423] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Constructing composite structures is the key to breaking the dilemma of slow reaction kinetics and easy oxidation on the surface of lightly doped p-type silicon nanowire (SiNW) array photocathodes. Electrodeposition is a convenient and fast technique to prepare composite photocathodes. However, the low conductivity of SiNWs limits the application of the electrodeposition technique in constructing composite structures. Herein, SiNWs were loaded with Au nanoparticles by chemical deposition to decrease the interfacial charge transfer resistance and increase active sites for the electrodeposition. Subsequently, co-catalysts CoS, MoS2, and Ni3S2 with excellent hydrogen evolution activity were successfully composited by electrodeposition on the surface of SiNWs/Au. The obtained core-shell structures exhibited excellent photoelectrochemical hydrogen evolution activity, which was contributed by the plasma property of Au and the abundant hydrogen evolution active sites of the co-catalysts. This work provided a simple and efficient solution for the preparation of lightly doped SiNW-based composite structures by electrodeposition.
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Affiliation(s)
- Lang Hu
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Jiamin Wang
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Honggui Wang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Ya Zhang
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
| | - Jie Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
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Andrei V, Roh I, Yang P. Nanowire photochemical diodes for artificial photosynthesis. SCIENCE ADVANCES 2023; 9:eade9044. [PMID: 36763656 PMCID: PMC9917021 DOI: 10.1126/sciadv.ade9044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/05/2023] [Indexed: 06/18/2023]
Abstract
Artificial photosynthesis can provide a solution to our current energy needs by converting small molecules such as water or carbon dioxide into useful fuels. This can be accomplished using photochemical diodes, which interface two complementary light absorbers with suitable electrocatalysts. Nanowire semiconductors provide unique advantages in terms of light absorption and catalytic activity, yet great control is required to integrate them for overall fuel production. In this review, we journey across the progress in nanowire photoelectrochemistry (PEC) over the past two decades, revealing design principles to build these nanowire photochemical diodes. To this end, we discuss the latest progress in terms of nanowire photoelectrodes, focusing on the interplay between performance, photovoltage, electronic band structure, and catalysis. Emphasis is placed on the overall system integration and semiconductor-catalyst interface, which applies to inorganic, organic, or biologic catalysts. Last, we highlight further directions that may improve the scope of nanowire PEC systems.
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Affiliation(s)
- Virgil Andrei
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Inwhan Roh
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Liquid Sunlight Alliance, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Peidong Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Liquid Sunlight Alliance, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
- Kavli Energy NanoScience Institute, Berkeley, CA 94720, USA
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6
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Sim Y, Chae Y, Kwon SY. Recent advances in metallic transition metal dichalcogenides as electrocatalysts for hydrogen evolution reaction. iScience 2022; 25:105098. [PMID: 36157572 PMCID: PMC9490594 DOI: 10.1016/j.isci.2022.105098] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Layered metallic transition metal dichalcogenides (MTMDs) exhibit distinctive electrical and catalytic properties to drive basal plane activity, and, therefore, they have emerged as promising alternative electrocatalysts for sustainable hydrogen evolution reactions (HERs). A key challenge for realizing MTMDs-based electrocatalysts is the controllable and scalable synthesis of high-quality MTMDs and the development of engineering strategies that allow tuning their electronic structures. However, the lack of a method for the direct synthesis of MTMDs retaining the structural stability limits optimizing the structural design for the next generation of robust electrocatalysts. In this review, we highlight recent advances in the synthesis of MTMDs comprising groups VB and VIB and various routes for structural engineering to enhance the HER catalytic performance. Furthermore, we provide insight into the potential future directions and the development of MTMDs with high durability as electrocatalysts to generate green hydrogen through water-splitting technology.
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Affiliation(s)
- Yeoseon Sim
- Department of Materials Science and Engineering & Center for Future Semiconductor Technology (FUST), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Yujin Chae
- Department of Materials Science and Engineering & Center for Future Semiconductor Technology (FUST), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Soon-Yong Kwon
- Department of Materials Science and Engineering & Center for Future Semiconductor Technology (FUST), Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
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7
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Wang B, Chen M, Lv J, Xu G, Shu X, Wu YC. Improved hydrogen evolution with SnS 2 quantum dot-incorporated black Si photocathode. Dalton Trans 2021; 50:13329-13336. [PMID: 34608916 DOI: 10.1039/d1dt02048j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Black silicon (bSi), possessing appealing light-trapping properties and large specific surface area, ranks high among many other photocathode materials. However, the insufficient dynamics towards HER seriously bother black Si. Herein, a novel photoelectrode with ultrasmall size tin sulfide quantum dot (SnS2 QD) incorporated black silicon was employed. Nanosized SnS2 possesses numerous active sites for electrochemical reactions. Impressively, benefiting from SnS2 QDs, the downward band bending of the Si Fermi level at the interface of electrolyte becomes higher, which remarkably suppresses the recombination of photo-generated carriers, thereby facilitating the participation of photo-generated electrons in PEC-HER. As a result, the thus-designed SnS2/bSi reveals an exceptional PEC-HER activity with a positive onset potential of 0.235 V vs. reversible hydrogen electrode (RHE), a high photocurrent of 1.23 mA cm-2 at 0 V vs. RHE, and long-term stability. Besides, the saturated photocurrent of ∼41 mA cm-2 is achieved at about -0.51 V vs. RHE.
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Affiliation(s)
- Bo Wang
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China.
| | - Ming Chen
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China.
| | - Jun Lv
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China. .,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China
| | - Guangqing Xu
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China. .,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China
| | - Xia Shu
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China. .,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China
| | - Yu-Cheng Wu
- School of Materials Science and Engineering, Hefei University of Technology, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China. .,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, No. 193, Tunxi Road, Baohe District, Hefei, 230009, PR China
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8
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Jun SE, Hong SP, Choi S, Kim C, Ji SG, Park IJ, Lee SA, Yang JW, Lee TH, Sohn W, Kim JY, Jang HW. Boosting Unassisted Alkaline Solar Water Splitting Using Silicon Photocathode with TiO 2 Nanorods Decorated by Edge-Rich MoS 2 Nanoplates. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103457. [PMID: 34453489 DOI: 10.1002/smll.202103457] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/23/2021] [Indexed: 06/13/2023]
Abstract
To construct a highly efficient photoelectrochemical tandem device with silicon photocathode operating in alkaline conditions, it is desirable to develop stable and active catalysts which enable the photocathode to reliably perform under an alkaline environment. With nanostructured passivation layer and edge-exposed transition metal disulfides, silicon photocathode provides new opportunities for achieving unbiased alkaline solar water splitting. Here, the TiO2 nanorod arrays decorated by edge-rich MoS2 nanoplates are elaborately synthesized and deposited on p-Si. The vertically aligned TiO2 nanorods fully stabilize the Si surface and improve anti-reflectance. Moreover, MoS2 nanoplates with exposed edge sites provide catalytically active regions resulting in the kinetically favored hydrogen evolution under an alkaline environment. Interfacial energy band bending between p-Si and catalyst layers facilitates the transport of photogenerated electrons under steady-state illumination. Consequently, the MoS2 nanoplates/TiO2 nanorods/p-Si photocathode exhibits significantly improved photoelectrochemical-hydrogen evolution reaction (PEC-HER) performance in alkaline media with a high photocurrent density of 10 mA cm-2 at 0 V versus RHE and high stability. By integrating rationally designed photocathode with earth-abundant Fe60 (NiCo)30 Cr10 anode and perovskite/Si tandem photovoltaic cell, an unassisted alkaline solar water splitting is accomplished with a current density of 5.4 mA cm-2 corresponding to 6.6% solar-to-hydrogen efficiency, which is the highest among p-Si photocathodes.
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Affiliation(s)
- Sang Eon Jun
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seung-Pyo Hong
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Changyeon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Su Geun Ji
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ik Jae Park
- Department of Applied Physics, Sookmyung Women's University, Seoul, 04310, Republic of Korea
| | - Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woonbae Sohn
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Young Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Research Institute of Advanced Materials (RIAM), Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 16229, Republic of Korea
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9
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Jun SE, Choi S, Choi S, Lee TH, Kim C, Yang JW, Choe WO, Im IH, Kim CJ, Jang HW. Direct Synthesis of Molybdenum Phosphide Nanorods on Silicon Using Graphene at the Heterointerface for Efficient Photoelectrochemical Water Reduction. NANO-MICRO LETTERS 2021; 13:81. [PMID: 34138338 PMCID: PMC8006559 DOI: 10.1007/s40820-021-00605-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/06/2021] [Indexed: 05/14/2023]
Abstract
MoP nanorod-array catalysts were directly synthesized on graphene passivated silicon photocathodes without secondary phase. Mo-O-C covalent bondings and energy band bending at heterointerfaces facilitate the electron transfer to the reaction sites. Numerous catalytic sites and drastically enhanced anti-reflectance of MoP nanorods contribute to the high solar energy conversion efficiency. Transition metal phosphides (TMPs) and transition metal dichalcogenides (TMDs) have been widely investigated as photoelectrochemical (PEC) catalysts for hydrogen evolution reaction (HER). Using high-temperature processes to get crystallized compounds with large-area uniformity, it is still challenging to directly synthesize these catalysts on silicon photocathodes due to chemical incompatibility at the heterointerface. Here, a graphene interlayer is applied between p-Si and MoP nanorods to enable fully engineered interfaces without forming a metallic secondary compound that absorbs a parasitic light and provides an inefficient electron path for hydrogen evolution. Furthermore, the graphene facilitates the photogenerated electrons to rapidly transfer by creating Mo-O-C covalent bondings and energetically favorable band bending. With a bridging role of graphene, numerous active sites and anti-reflectance of MoP nanorods lead to significantly improved PEC-HER performance with a high photocurrent density of 21.8 mA cm-2 at 0 V versus RHE and high stability. Besides, low dependence on pH and temperature is observed with MoP nanorods incorporated photocathodes, which is desirable for practical use as a part of PEC cells. These results indicate that the direct synthesis of TMPs and TMDs enabled by graphene interlayer is a new promising way to fabricate Si-based photocathodes with high-quality interfaces and superior HER performance.
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Affiliation(s)
- Sang Eon Jun
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Shinyoung Choi
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Changyeon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Woon-Oh Choe
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - In-Hyuk Im
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
| | - Cheol-Joo Kim
- Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea.
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10
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Li Y, Wang T, Gao B, Fan X, Gong H, Xue H, Zhang S, Huang X, He J. Efficient photocathode performance of lithium ion doped LaFeO 3 nanorod arrays in hydrogen evolution. NEW J CHEM 2021. [DOI: 10.1039/d0nj05788f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Li-doped LaFeO3 nanorod arrays are used in photoelectrochemical water reduction.
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Affiliation(s)
- Yang Li
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Tao Wang
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Bin Gao
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Xiaoli Fan
- School of Materials Science and Engineering
- Nanjing Institute of Technology
- 211167 Nanjing
- P. R. China
| | - Hao Gong
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Hairong Xue
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Songtao Zhang
- Testing Center
- Yangzhou University
- 225009 Yangzhou
- P. R. China
| | - Xianli Huang
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Jianping He
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
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Lian Z, Tao Y, Liu Y, Zhang Y, Zhu Q, Li G, Li H. Efficient Self-Driving Photoelectrocatalytic Reactor for Synergistic Water Purification and H 2 Evolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44731-44742. [PMID: 32931240 DOI: 10.1021/acsami.0c12828] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The photoelectrocatalytic (PEC) technique has attracted much attention to getting clear energy and environmental purification. Simultaneous reactions of solar energy generation could be used to apply for practical applications to maximize the functionality of reactor systems. Herein, we crafted a self-driving photoelectrocatalytic reactor system, comprising platinum (Pt) modified p-Si nanowires (Pt/Si-NWs) as a photocathode and TiO2 nanotube arrays (TiO2-NTAs) as a photoanode for synergistic H2 evolution and water purification, respectively. Hydrogen evolution in the cathode chamber and environmental remediation in the anode chamber were achieved with the aid of appropriate bandgap illumination and self-built bias voltage. The mismatch of Fermi levels between TiO2-NTAs and Si-NWs reduced the recombination rates of photoinduced electrons and holes through the formation of Z scheme and inner electric filed. The synergistic PEC reactions exhibited much higher activities than those achieved using other systems so far. This basic principal could be applied for fabricating other PEC reactors in photoelectro conversion devices and be established as design guidelines for reactors to maximize the PEC performance.
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Affiliation(s)
- Zichao Lian
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Ying Tao
- Chinese Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yunni Liu
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yang Zhang
- Chinese Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Qiong Zhu
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Guisheng Li
- Chinese Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Hexing Li
- Chinese Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
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