1
|
Cai Y, Shu H, Yu F, Yang Y. Molecular sieving of semiconductive NTU-9 coatings on titanium dioxide nanowire arrays: Augmented yet selective photoelectrochemical response enabled by boosting charge separation and transfer in confined space. J Colloid Interface Sci 2023; 630:523-533. [DOI: 10.1016/j.jcis.2022.10.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/14/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022]
|
2
|
Shao H, Li X, Zhang J, Zhao X. Peroxymonosulfate enhanced photoelectrocatalytic oxidation of organic contaminants and simultaneously cathodic recycling of silver. J Environ Sci (China) 2022; 120:74-83. [PMID: 35623774 DOI: 10.1016/j.jes.2021.08.028] [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: 06/17/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 06/15/2023]
Abstract
Degradation of organic contaminants with simultaneous recycling of Ag+ from silver-containing organic wastewater such as photographic effluents is desired. Although photoelectrocatalysis (PEC) technology is a good candidate for this type of wastewater, its reaction kinetics still needs to be improved. Herein, peroxymonosulfate (PMS) was employed to enhance the PEC kinetics for oxidation of phenol (PhOH) at the anode and reduction of Ag+ at the cathode. The degradation efficiency of phenol (PhOH, 0.1 mmol/L) was increased from 42.8% to 96.9% by adding 5 mmol/L PMS at a potential of 0.25 V. Meanwhile, the Ag (by wt%) deposited on the cathode was 28.1% (Ag2O) in PEC process, while that of Ag (by wt%) was 69.7% (Ag0) by adding PMS. According to the electrochemistry analysis, PMS, as photoelectrons acceptor, enhances the separation efficiency of charges and the direct h+ oxidation of PhOH at the photoanode. Meantime, the increasing cathode potential avoided H2 evolution and strongly alkaline at the surface of cathode, thus enabling the deposition of Ag+ in the form of metallic silver with the help of PMS. In addition, PMS combined with PEC process was effective in treating photographic effluents.
Collapse
Affiliation(s)
- Huixin Shao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xia Li
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Capital Co. Ltd., Beijing 100028, China
| | - Juanjuan Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
3
|
Xiao R, Wei W, Li J, Xiao C, Yao H, Liu H. Constructing combinational and sequential logic devices through an intelligent electrocatalytic interface with immobilized MoS2 quantum dots and enzymes. Talanta 2022; 248:123615. [DOI: 10.1016/j.talanta.2022.123615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/24/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
|
4
|
Li Y, Dai X, Bu Y, Zhang H, Liu J, Yuan W, Guo X, Ao JP. Photoelectrochemical Performance Improving Mechanism: Hybridization Appearing at the Energy Band of BiVO 4 Photoanode by Doped Quantum Layers Modification. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200454. [PMID: 35363421 DOI: 10.1002/smll.202200454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 03/12/2022] [Indexed: 06/14/2023]
Abstract
Surface passivation of the photoelectrode by wide bandgap semiconductor quantum layer is an important strategy to improve work stability and surface state inhibition. However, an inevitable energy barrier is generated during the quantum tunneling process of the photocarriers. To overcome this shortage, a tandem photo-generated hole transfer route is fabricated on BiVO4 photoanode by doped dual-quantum layers modification, Ni-ZnO (5 nm) and Rh-SrTiO3 (≈10 nm). Modulated photoelectrochemical (PEC), Scanning Kelvin Probe (SKP), and DFT calculation method results indicate that a tandem hole ohmic contact route is formed in the photoanode to reduce the quantum tunneling energy barrier, meanwhile, the photon absorption capacity of BiVO4 is improved after doped quantum layers modification. Both a phenomenal attribute to the energy band hybridization between Ni, Rh 3d orbits in quantum layers with BiVO4 photoanode. Then, the modified BiVO4 photoanode achieves the recoded photocurrent density of 6.47 and 5.18 mA cm-2 (Na2 SO3 electrolyte, VRHE = 1.23 V) under simulated sun light (100 mW cm-2 AM 1.5 G) by xenon lamp illumination without and with UV composition cutting down to ≈5%, respectively. Generally, this work will highlight a potential application in the fields of PEC water splitting and photovoltaic conversion for various semiconductor nanomaterials.
Collapse
Affiliation(s)
- Yang Li
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| | - Xianying Dai
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| | - Yuyu Bu
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| | - Hanzhi Zhang
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| | - Jie Liu
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| | - Wenyu Yuan
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, School of Chemistry & Chemical Engineering, Shannxi Normal University, Xi'an, 710062, China
| | - Xiaohui Guo
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, The College of Chemistry and Materials Science, Northwest University, Xi'an, 710061, China
| | - Jin-Ping Ao
- Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, School of Microelectronics, Xidian University, Xi'an, 710071, China
| |
Collapse
|
5
|
Xu R, Du Y, Ma H, Wu D, Ren X, Sun X, Wei Q, Ju H. Photoelectrochemical aptasensor based on La 2Ti 2O 7/Sb 2S 3 and V 2O 5 for effectively signal change strategy for cancer marker detection. Biosens Bioelectron 2021; 192:113528. [PMID: 34325322 DOI: 10.1016/j.bios.2021.113528] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/24/2021] [Accepted: 07/20/2021] [Indexed: 12/01/2022]
Abstract
In this item, a high-efficiency signal "on-off-on" strategy photoelectrochemical (PEC) apatsensor was resoundingly developed for target ultrasensitive analysis. Primarily, the heterojunction formation between Cd: Sb2S3 and La2Ti2O7 was contributed to the first "signal-on" state to improve the stability of the PEC platform. Secondly, V2O5 nanosphere act as a catalyst for H2O2 was used to label on aptamer DNA to consume electron donor for achieving "signal-off" state. Then target analyte was modified on the surface of the PEC platform, and part of V2O5 with aptamer DNA would be released from the aptasensor surface, thus, the "signal-on" state was realized again. In this signal "on-off-on" strategy, the PEC performance of perovskite La2Ti2O7 was effectively perfected with Cd: Sb2S3 sensitization, and broaden the application of perovskite in PEC sensor field. And the signal attenuation and recovery strategy were distinctly elevated the sensitivity of the aptasensor. In the preferred detection conditions, the proposed PEC sensor for analyte (PSA as an example) analysis revealed a wide sensing range from 1.000 × 10-5 to 500.0 ng/mL, own a low detection limit of 4.300 fg/mL. This smart response change mode also provide prospect for other target detection, and offer a reference to signal transform for other electrochemical method.
Collapse
Affiliation(s)
- Rui Xu
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
| | - Yu Du
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
| | - Hongmin Ma
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Dan Wu
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Xiang Ren
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Xu Sun
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Qin Wei
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China
| | - Huangxian Ju
- Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection; Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| |
Collapse
|
6
|
Shao M, Liu D, Yan B, Feng X, Zhang X, Zhang Y. Layer-by-Layer Electrodeposition of FTO/TiO 2 /Cu x O/CeO 2 (1 < x < 2) Photocatalysts with High Peroxidase-Like Activity by Greatly Enhanced Singlet Oxygen Generation. SMALL METHODS 2021; 5:e2100423. [PMID: 34927991 DOI: 10.1002/smtd.202100423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 05/26/2021] [Indexed: 06/14/2023]
Abstract
Inorganic nanomaterials have attracted much attention as enzyme mimics because of simple and stable spatial conformation of those artificially synthesized nanocatalysts. Cu2 O, as an important kind of narrow band gap semiconductor, is identified as effective as visible-light-driven photocatalysts, which can catalyze decomposition of H2 O2 into reactive oxygen species. Moreover, after forming Cux O/CeO2 hybrids, the strongly coupled interface between the two components will further improve their catalytic performance. In this paper, the authors try to construct FTO/TiO2 /Cux O/CeO2 (1 < x < 2) nanohybrids with such a kind of active interface via a layer-by-layer electrodeposition strategy by aid of the following surface etching process. It is found that FTO/TiO2 /Cux O/CeO2 exhibits good peroxidase mimic activity in the dark but much better performance under visible light irradiation (λ ≥ 420 nm) during catalytic oxidation of 3,3',5,5'-tetramethylbenzidine substrates in the presence of H2 O2 . Detailed characterizations disclose that the construction of TiO2 /Cu2 O pn-heterojunctions do effectively accelerate separation of photogenerated carriers, and the formation of a highly active Cux O/CeO2 interface is synergistically favorable for selectively generating singlet oxygen to boost the catalytic performance of FTO/TiO2 /Cux O/CeO2 .
Collapse
Affiliation(s)
- Mingzhe Shao
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Dapeng Liu
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Baolin Yan
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Xilan Feng
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
| | - Xiaojuan Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, 100048, P. R. China
| | - Yu Zhang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, P.R. China
- International Research Institute for Multidisciplinary Science, Beihang University, Beijing, 100191, P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, P. R. China
| |
Collapse
|
7
|
S DL, T SJ, C R, KJ A. Accelerated Photodegradation of Solid Phase Polystyrene by Nano TiO2-Graphene Oxide Composite under Ultraviolet radiation. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2020.109476] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
8
|
Kandiel TA. Mechanistic investigation of water oxidation on hematite photoanodes using intensity-modulated photocurrent spectroscopy. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
9
|
Yang Q, Zhu H, Hou Y, Liu D, Tang H, Liu D, Zhang W, Yan S, Zou Z. Surface polaron states on single-crystal rutile TiO 2 nanorod arrays enhancing charge separation and transfer. Dalton Trans 2020; 49:15054-15060. [PMID: 33103679 DOI: 10.1039/d0dt03068f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Polaron states on TiO2 photoanodes provide an important electron transfer pathway at the electrode-electrolyte interface. Here, we electrochemically doped single-crystal rutile TiO2 nanorod arrays with exposed (110) facets to produce surface polaron states, Ti3+-OH, which greatly contributed to charge separation and transfer. Our results experimentally clarified the previously confused understanding of the origin of improved photoelectrochemical (PEC) water splitting performance and verified that the enhanced PEC effects mainly arise from surface polaron states instead of grain boundary passivation.
Collapse
Affiliation(s)
- Qimeng Yang
- Eco-Materials and Renewable Energy Research Center (ERERC), Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu 210093, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Shao H, Wang Y, Zeng H, Zhang J, Wang Y, Sillanpää M, Zhao X. Enhanced photoelectrocatalytic degradation of bisphenol a by BiVO 4 photoanode coupling with peroxymonosulfate. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:121105. [PMID: 32203721 DOI: 10.1016/j.jhazmat.2019.121105] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 08/25/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Peroxymonosulfate (PMS) was introduced into a photoelectrocatalytic (PEC) system with a bismuth vanadate (BiVO4) photoanode to enhance the PEC oxidation of bisphenol A (BPA). With the addition of 5 mM PMS, the degradation efficiency of 10 mg/L BPA was significantly improved from 24.2% to 100.0% within 120 min and the side reaction of O2 evolution was avoided at a potential as low as 0.25 V. The electron spin resonance and radicals quenching results suggested that photogenerated holes instead of SO4•- and OH were primarily responsible for the BPA degradation. To further explore the role of PMS, a photocatalytic fuel cell with the structure of BiVO4 (photoanode)|10 mg/L BPA|proton exchange membrane (separator)|5 mM PMS|Pt (cathode) was constructed and demonstrated that PMS played a key role as electrons acceptor instead of the precursor of SO4•-. The PEC tests including open-circuit potential, linear sweep voltammetry and electrochemical impedance spectroscopy indicated that a more efficient separation of photogenerated charges was achieved in the PEC process with the help of PMS, thus generating more photogenerated holes for enhanced BPA degradation. This work may provide a novel way to enhance the separation of photogenerated charges at the photoanode.
Collapse
Affiliation(s)
- Huixin Shao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yanbin Wang
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Huabin Zeng
- Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Juanjuan Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yan Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Mika Sillanpää
- Department of Green Chemistry, School of Engineering Science, Lappeenranta-Lahti University of Technology LUT, Sammonkatu 12, FI-50130, Mikkeli, Finland
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.
| |
Collapse
|
11
|
Prasad U, Prakash J, Gupta SK, Zuniga J, Mao Y, Azeredo B, Kannan ANM. Enhanced Photoelectrochemical Water Splitting with Er- and W-Codoped Bismuth Vanadate with WO 3 Heterojunction-Based Two-Dimensional Photoelectrode. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19029-19039. [PMID: 31062583 DOI: 10.1021/acsami.9b00150] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A novel two-dimensional (2D) heterojunction photoelectrode composed of WO3 and (Er,W):BiVO4 is proposed for water oxidation with efficient photoinduced charge carrier separation and transfer. Er stoichiometric along with W nonstoichiometric codoping was introduced to simultaneously manage vacancy creation during substitutional doping, enhance light absorption, and reduce overall impedance. It was found that Er3+ is substituted at the Bi3+ sites in the BiVO4 lattice to provide expanded light absorption from 400 to 680 nm. The fabricated WO3/(Er,W):BiVO4 electrode shows photocurrent densities of 4.1 and 7.2 mA cm-2 at 1.23 and 2.3 V (vs reversible hydrogen electrode, RHE), respectively, under a 1 sun illumination in K2HPO4 electrolyte. This electrode has shown remarkably high charge separation efficiency of 93% at 1.23 V (vs RHE). With the addition of a standard surface catalyst (i.e., Co-Pi), the WO3/(Er,W):BiVO4/Co-Pi electrode exhibits the highest photocurrent of 5.6 ± 0.3 mA cm-2 at 1.23 V (vs RHE), nearing the theoretical limit (i.e., 7.5 mA cm-2) while retaining 98% of the photoelectrochemical cell performance after 3 h. By concomitantly doping the Bi3+ and V5+ sites to enhance absorption, this study demonstrates for the first time a planar WO3/BiVO4 heterojunction that reaches 88% of the record-high performance of its nanostructured counterpart. Through a detailed characterization of the electrodes, it is concluded that the stoichiometric Er and nonstoichiometric W codoping extend light absorption region and improve charge separation efficiency by reducing bulk resistance. The photoactive materials with 2D morphology were synthesized using a facile ultrasonic spray-coating technique without any complex process steps and thus it can be scaled for commercial development.
Collapse
Affiliation(s)
- Umesh Prasad
- The Polytechnic School, Ira A. Fulton Schools of Engineering , Arizona State University , Mesa , Arizona 85212 , United States
| | - Jyoti Prakash
- The Polytechnic School, Ira A. Fulton Schools of Engineering , Arizona State University , Mesa , Arizona 85212 , United States
| | | | | | | | - Bruno Azeredo
- The Polytechnic School, Ira A. Fulton Schools of Engineering , Arizona State University , Mesa , Arizona 85212 , United States
| | - Arunachala Nadar Mada Kannan
- The Polytechnic School, Ira A. Fulton Schools of Engineering , Arizona State University , Mesa , Arizona 85212 , United States
| |
Collapse
|
12
|
A ratiometric fluorescence platform based on boric-acid-functional Eu-MOF for sensitive detection of H 2O 2 and glucose. Biosens Bioelectron 2019; 135:208-215. [PMID: 31026775 DOI: 10.1016/j.bios.2019.04.008] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 03/15/2019] [Accepted: 04/04/2019] [Indexed: 12/22/2022]
Abstract
A Eu-metal organic framework (Eu-MOF) probe with dual-emission was reported for the ratiometric fluorescence detection of H2O2 and glucose. Because of the special nucleophilic reaction between boric group and H2O2, Eu3+ and 5-boronobenzene-1,3-dicarboxylic acid (BBDC) were selected to synthesize the functional MOF probe via a simple one-pot solvothermal method. The Eu-MOF shows dual-emission at 370 and 623 nm with the single excitation at 270 nm due to the energy transfer efficiency change for antenna effect procedure. After addition of H2O2, the red emission of Eu-MOF weakened and the blue emission enhances immediately under 270 nm irradiation, so the ratiometric fluorescence detection is established. Moreover, the obvious color change for visual measuring of H2O2 and glucose is illustrated to reveal the merit of Eu-MOF probe. The proposed method was demonstrated to be highly sensitive and selective for H2O2 and glucose, with the low detection limits of 0.0335 and 0.0643 μM, respectively. The established boric-acid-functional Eu-MOF sensing platform was proved as the powerful probe for H2O2 and the metabolites involved in H2O2-generating reaction.
Collapse
|
13
|
Qiao P, Sun B, Li H, Pan K, Tian G, Wang L, Zhou W. Surface Plasmon Resonance-Enhanced Visible-NIR-Driven Photocatalytic and Photothermal Catalytic Performance by Ag/Mesoporous Black TiO2
Nanotube Heterojunctions. Chem Asian J 2018; 14:177-186. [DOI: 10.1002/asia.201801428] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/05/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Panzhe Qiao
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Bojing Sun
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Haoze Li
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Kai Pan
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Guohui Tian
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Lei Wang
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| | - Wei Zhou
- Key Laboratory of Functional Inorganic Material Chemistry; Ministry of Education of the People's Republic of China; Heilongjiang University; Harbin 150080 P. R. China
| |
Collapse
|
14
|
Xu Z, Wang H, Wen Y, Li W, Sun C, He Y, Shi Z, Pei L, Chen Y, Yan S, Zou Z. Balancing Catalytic Activity and Interface Energetics of Electrocatalyst-Coated Photoanodes for Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3624-3633. [PMID: 29308871 DOI: 10.1021/acsami.7b17348] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
For photoelectrochemical (PEC) water splitting, the interface interactions among semiconductors, electrocatalysts, and electrolytes affect the charge separation and catalysis in turn. Here, through the changing of the bath temperature, Co-based oxygen evolution catalysts (OEC) with different crystallinities were electrochemically deposited on Ti-doped Fe2O3 (Ti-Fe2O3) photoanodes. We found: (1) the OEC with low crystallinity is highly ion-permeable, decreasing the interactions between OEC and photoanode due to the intimate interaction between semiconductor and electrolyte; (2) the OEC with high crystallinity is nearly ion-impermeable, is beneficial to form a constant buried junction with semiconductor, and exhibits the low OEC catalytic activity; and (3) the OEC with moderate crystallinity is partially electrolyte-screened, thus contributing to the formation of ideal band bending underneath surface of semiconductor for charge separation and the highly electrocatalytic activity of OEC for lowering over-potentials of water oxidation. Our results demonstrate that to balance the water oxidation activity of OEC and OEC-semiconductor interface energetics is crucial for highly efficient solar energy conversion; in particular, the energy transducer is a semiconductor with a shallow or moderate valence-band level.
Collapse
Affiliation(s)
| | | | - Yunzhou Wen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Laboratory of Advanced Materials, Fudan University , Shanghai 200438, PR China
| | | | | | | | | | | | | | | | | |
Collapse
|