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Dong WJ, Ye Z, Tang S, Navid IA, Xiao Y, Zhang B, Pan Y, Mi Z. Concentrated Solar Light Photoelectrochemical Water Splitting for Stable and High-Yield Hydrogen Production. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2309548. [PMID: 38460173 PMCID: PMC11234434 DOI: 10.1002/advs.202309548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/28/2024] [Indexed: 03/11/2024]
Abstract
Photoelectrochemical water splitting is a promising technique for converting solar energy into low-cost and eco-friendly H2 fuel. However, the production rate of H2 is limited by the insufficient number of photogenerated charge carriers in the conventional photoelectrodes under 1 sun (100 mW cm-2) light. Concentrated solar light irradiation can overcome the issue of low yield, but it leads to a new challenge of stability because the accelerated reaction alters the surface chemical composition of photoelectrodes. Here, it is demonstrated that loading Pt nanoparticles (NPs) on single crystalline GaN nanowires (NWs) grown on n+-p Si photoelectrode operates efficiently and stably under concentrated solar light. Although a large number of Pt NPs detach during the initial reaction due to H2 gas bubbling, some Pt NPs which have an epitaxial relation with GaN NWs remain stably anchored. In addition, the stability of the photoelectrode further improves by redepositing Pt NPs on the reacted Pt/GaN surface, which results in maintaining onset potential >0.5 V versus reversible hydrogen electrode and photocurrent density >60 mA cm-2 for over 1500 h. The heterointerface between Pt cocatalysts and single crystalline GaN nanostructures shows great potential in designing an efficient and stable photoelectrode for high-yield solar to H2 conversion.
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Affiliation(s)
- Wan Jae Dong
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Zhengwei Ye
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Songtao Tang
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Ishtiaque Ahmed Navid
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Yixin Xiao
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Bingxing Zhang
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Yuyang Pan
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
| | - Zetian Mi
- Department of Electrical Engineering and Computer ScienceUniversity of Michigan1301 Beal AvenueAnn ArborMI48109USA
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Li J, Jiang Y, Xu A, Luo F, Lin C, Qiu B, Lin Z, Jiang Z, Wang J. ZnO/Au/GaN heterojunction-based self-powered photoelectrochemical Sensor for alpha-fetoprotein detection. Talanta 2024; 268:125381. [PMID: 37931568 DOI: 10.1016/j.talanta.2023.125381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/14/2023] [Accepted: 10/31/2023] [Indexed: 11/08/2023]
Abstract
In recent years, the development of miniature and portable sensors has been a major focus of research. PEC self-powered sensors have emerged as a potential solution to the power supply issue, eliminating the need for external power supplies and operating without bias voltage. This study developed a ZnO/Au/GaN sensor for highly sensitive detection of alpha-fetoprotein (AFP). The sensor uses GaN substrates with nanogold films to provide an auxiliary bias voltage, promoting high photogenerated current density. Using ZnO/Au/GaN as a photoanode resulted in significantly higher photocurrent generated by the sensor compared to Au/GaN or ZnO/ITO alone. To enable selective detection of AFP, antibody modification of the ZnO nanorod arrays was employed. The linear range of the sensor response to AFP was determined to be 0.080-5.0 ng/mL, with an impressively low detection limit of 0.027 ng/mL (S/N = 3). These results demonstrate the potential of this self-powered sensor for detecting AFP content in human serum samples. Overall, this study presents a novel approach for developing highly sensitive and selective self-powered sensors for biomarker detection, which could facilitate early detection and clinical diagnosis of various types of cancer.
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Affiliation(s)
- Jing Li
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Yifan Jiang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Aihua Xu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Fang Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Cuiying Lin
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Zhou Jiang
- Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, College of Chemistry, Fuzhou University, Fuzhou, 350108, China.
| | - Jian Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
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Li K, Shi Z, Wang L, Wang W, Liu Y, Cheng H, Yang Y, Zhang L. Efficient electrochemical NO reduction to NH 3 over metal-free g-C 3N 4 nanosheets and the role of interface microenvironment. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130890. [PMID: 36860065 DOI: 10.1016/j.jhazmat.2023.130890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/16/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
The ever-increasing NO emission has caused severe environmental issues and adverse effects on human health. Electrocatalytic reduction is regarded as a win-win technology for NO treatment with value-added NH3 generation, but the process is mainly relied on the metal-containing electrocatalysts. Here, we developed metal-free g-C3N4 nanosheets (deposited on carbon paper, named as CNNS/CP) for NH3 synthesis from electrochemical NO reduction under ambient condition. The CNNS/CP electrode afforded excellent NH3 yield rate of 15.1 μmol h-1 cm-2 (2180.1 mg gcat-1 h-1) and Faradic efficiency (FE) of ∼41.5 % at - 0.8 and - 0.6 VRHE, respectively, which were superior to the block g-C3N4 particles and comparable to the most of metal-containing catalysts. Moreover, through adjusting the interface microenvironment of CNNS/CP electrode by hydrophobic treatment, the abundant gas-liquid-solid triphasic interface improved NO mass transfer and availability, which enhanced NH3 production and FE to about 30.7 μmol h-1 cm-2 (4424.2 mg gcat-1 h-1) and 45.6 % at potential of - 0.8 VRHE. This study opens a novel pathway to develop efficient metal-free electrocatalysts for NO electroreduction and highlights the importance of electrode interface microenvironment in electrocatalysis.
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Affiliation(s)
- Kejian Li
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - Zhuocheng Shi
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - Longqian Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - Wei Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - YangYang Liu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - Hanyun Cheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China
| | - Yang Yang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China; School of Life Science, Huaibei Normal University, Huaibei, Anhui 235000, People's Republic of China.
| | - Liwu Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, People's Republic of China.
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Dong WJ, Xiao Y, Yang KR, Ye Z, Zhou P, Navid IA, Batista VS, Mi Z. Pt nanoclusters on GaN nanowires for solar-asssisted seawater hydrogen evolution. Nat Commun 2023; 14:179. [PMID: 36635289 PMCID: PMC9837051 DOI: 10.1038/s41467-023-35782-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 01/02/2023] [Indexed: 01/14/2023] Open
Abstract
Seawater electrolysis provides a viable method to produce clean hydrogen fuel. To date, however, the realization of high performance photocathodes for seawater hydrogen evolution reaction has remained challenging. Here, we introduce n+-p Si photocathodes with dramatically improved activity and stability for hydrogen evolution reaction in seawater, modified by Pt nanoclusters anchored on GaN nanowires. We find that Pt-Ga sites at the Pt/GaN interface promote the dissociation of water molecules and spilling H* over to neighboring Pt atoms for efficient H2 production. Pt/GaN/Si photocathodes achieve a current density of -10 mA/cm2 at 0.15 and 0.39 V vs. RHE and high applied bias photon-to-current efficiency of 1.7% and 7.9% in seawater (pH = 8.2) and phosphate-buffered seawater (pH = 7.4), respectively. We further demonstrate a record-high photocurrent density of ~169 mA/cm2 under concentrated solar light (9 suns). Moreover, Pt/GaN/Si can continuously produce H2 even under dark conditions by simply switching the electrical contact. This work provides valuable guidelines to design an efficient, stable, and energy-saving electrode for H2 generation by seawater splitting.
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Affiliation(s)
- Wan Jae Dong
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
| | - Yixin Xiao
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
| | - Ke R. Yang
- grid.47100.320000000419368710Department of Chemistry and Energy Sciences Institute, Yale University, New Haven, CT 06520 USA
| | - Zhengwei Ye
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
| | - Peng Zhou
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
| | - Ishtiaque Ahmed Navid
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
| | - Victor S. Batista
- grid.47100.320000000419368710Department of Chemistry and Energy Sciences Institute, Yale University, New Haven, CT 06520 USA
| | - Zetian Mi
- grid.214458.e0000000086837370Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109 USA
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Maurya KC, Chatterjee A, Shivaprasad SM, Saha B. Morphology-Controlled Reststrahlen Band and Infrared Plasmon Polariton in GaN Nanostructures. NANO LETTERS 2022; 22:9606-9613. [PMID: 36459090 DOI: 10.1021/acs.nanolett.2c03748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Due to ultrabright and stable blue light emission, GaN has emerged as one of the most famous semiconductors of the modern era, useful for light-emitting diodes, power electronics, and optoelectronic applications. Extending GaN's optical resonance from visible to mid- and-far-infrared spectral ranges will enable novel applications in many emerging technologies. Here we show hexagonal honeycomb-shaped GaN nanowall networks and vertically standing nanorods exhibiting morphology-dependent Reststrahlen band and plasmon polaritons that could be harnessed for infrared nanophotonics. Surface-induced dipoles at the edges and asperities in molecular beam epitaxy-deposited nanostructures lead to phonon absorption inside the Reststrahlen band, altering its shape from rectangular to right-trapezoidal. Excitation of such surface polariton modes provides a novel pathway to achieve far-infrared optical resonance in GaN. Additionally, surface defects in nanostructures lead to high carrier concentrations, resulting in tunable mid-infrared plasmon polaritons with high-quality factors. Demonstration of morphology-controlled Reststrahlen band and plasmon polaritons make GaN nanostructures attractive for infrared nanophotonics.
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Affiliation(s)
- Krishna Chand Maurya
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
| | - Abhijit Chatterjee
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
| | - Sonnada Math Shivaprasad
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
| | - Bivas Saha
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore560064, India
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