1
|
Kapila R, Sen B, Kamra A, Chandran S, Rana S. Light-gated specific oxidase-like activity of a self-assembled Pt(II) nanozyme for environmental remediation. NANOSCALE 2023; 15:14809-14821. [PMID: 37655463 DOI: 10.1039/d3nr02081a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Artificial enzyme equivalents, also known as nanozymes, are a practical tool for environmental remediation when compared to their natural counterparts due to their high operational stability, efficiency, and cost-effectiveness. Specific oxidase mimicking nanozymes are well suited to degrade toxic chemicals from industrial waste such as phenols and azo dyes. Therefore, photocatalytic nanozymes using visible/sunlight would provide a viable strategy for sustainable environmental remediation. Herein, we introduce an aggregation-induced emissive Pt(II) complex, which self-assembles in water providing NanoPtA nanotapes. These structures exhibit a specific oxidase-like nanozyme activity driven by light. The NanoPtA structure assists in the photogeneration of singlet oxygen in water via a triplet excited 3MMLCT state, leading to a specific oxidase-like activity instead of a peroxidase-like activity. The self-assembled nanozyme showed great stability under harsh environmental conditions and exhibited photo-induced specific oxidase-mimetic activity, which was considerably more efficient than the natural enzyme or other specific nanozymes. We demonstrated efficient NanoPtA-induced photocatalytic degradation of various phenolic compounds and azo dyes within 5-10 minutes of light irradiation. Notably, the system operates under sunlight and exhibits reusability over twenty cycles of catalytic reactions. Another fascinating aspect of NanoPtA is the unaltered catalytic performance for more than 75 days, providing a robust enzyme-equivalent for practical sustainable environmental remediation.
Collapse
Affiliation(s)
- Rohit Kapila
- Materials Research Centre, Indian Institute of Science, C. V. Raman Road, Bangalore 560012, Karnataka, India.
| | - Bhaskar Sen
- Materials Research Centre, Indian Institute of Science, C. V. Raman Road, Bangalore 560012, Karnataka, India.
| | - Alisha Kamra
- Materials Research Centre, Indian Institute of Science, C. V. Raman Road, Bangalore 560012, Karnataka, India.
| | - Shana Chandran
- Materials Research Centre, Indian Institute of Science, C. V. Raman Road, Bangalore 560012, Karnataka, India.
| | - Subinoy Rana
- Materials Research Centre, Indian Institute of Science, C. V. Raman Road, Bangalore 560012, Karnataka, India.
| |
Collapse
|
2
|
Qiu L, Peng H, Yang Z, Fan J, Li M, Yang S, Driscoll DM, Ren L, Mahurin SM, He LN, Dai S. Revolutionizing Porous Liquids: Stabilization and Structural Engineering Achieved by a Surface Deposition Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302525. [PMID: 37321653 DOI: 10.1002/adma.202302525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/11/2023] [Indexed: 06/17/2023]
Abstract
Facile approaches capable of constructing stable and structurally diverse porous liquids (PLs) that can deliver high-performance applications are a long-standing, captivating, and challenging research area that requires significant attention. Herein, a facile surface deposition strategy is demonstrated to afford diverse type III-PLs possessing ultra-stable dispersion, external structure modification, and enhanced performance in gas storage and transformation by leveraging the expeditious and uniform precipitation of selected metal salts. The Ag(I) species-modified zeolite nanosheets are deployed as the porous host to construct type III-PLs with ionic liquids (ILs) containing bromide anion , leading to stable dispersion driven by the formation of AgBr nanoparticles. The as-afforded type-III PLs display promising performance in CO2 capture/conversion and ethylene/ethane separation. Property and performance of the as-produced PLs can be tuned by the cation structure of the ILs, which can be harnessed to achieve polarity reversal of the porous host via ionic exchange. The surface deposition procedure can be further extended to produce PLs from Ba(II)-functionalized zeolite and ILs containing [SO4 ]2- anion driven by the formation of BaSO4 salts. The as-produced PLs are featured by well-maintained crystallinity of the porous host, good fluidity and stability, enhanced gas uptake capacity, and attractive performance in small gas molecule utilization.
Collapse
Affiliation(s)
- Liqi Qiu
- Department of Chemistry, Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, TN, 37996, USA
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Honggen Peng
- School of Resources and Environment/School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China
| | - Zhenzhen Yang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Juntian Fan
- Department of Chemistry, Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, TN, 37996, USA
| | - Meijia Li
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Shize Yang
- Eyring Materials Center, Arizona State University, Tempe, AZ, 85287, USA
| | - Darren M Driscoll
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Lei Ren
- School of Resources and Environment/School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China
| | - Shannon M Mahurin
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Liang-Nian He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Sheng Dai
- Department of Chemistry, Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, TN, 37996, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| |
Collapse
|
3
|
Photocatalytic CO2 Conversion to Ethanol: A Concise Review. Catalysts 2022. [DOI: 10.3390/catal12121549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Photo-catalytically converting the greenhouse gas CO2 into ethanol is an important avenue for the mitigation of climate issues and the utilization of renewable energies. Catalysts play critical roles in the reaction of photocatalytic CO2 conversion to ethanol, and a number of catalysts have been investigated, including semiconductors and plasmonic metal-based catalysts, as well as several other catalysts. In this review, the progress in the development of each category of catalysts is summarized, the current status is reviewed, the remaining challenges are pointed out, and the future research directions are prospected, with the aim being to pave pathways for the rational design of better catalysts.
Collapse
|
4
|
Chen Y, Zhao L, Wu X, Dong Y, Wang GL. Self-coordinated nanozyme on Cu 3BiS 3 nanorods for high-performance aptasensing. Mikrochim Acta 2022; 189:419. [PMID: 36251095 DOI: 10.1007/s00604-022-05524-x] [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: 05/11/2022] [Accepted: 10/01/2022] [Indexed: 11/28/2022]
Abstract
A novel strategy is reported to access high-performance nanozymes via the self-coordination of ferrocyanides ([Fe(CN)6]4-) onto the surface of the Cu3BiS3 (CBS) nanorods. Notably, the in situ formed nanozymes had high catalytic activity, good stability, low cost, and easy mass production. The formed nanozyme catalyzed the oxidation of the typical chromogenic substrate of 3,3',5,5'-tetramethylbenzidine (TMB) with a distinctive absorption peak at 652 nm, accompanied by a blue color development. Moreover, the attachment of deoxyribonucleoside 5'-monophosphates (dNMP) beforehand onto the surface of CBS prevented coordination of ferrocyanides and resulted in the tunable formation of the nanozyme, thereby enabling the construction of an exquisite biosensing platform. Taking the aptasensing of chloramphenicol (CAP) as an example, the engineered nanozyme allowed the construction of a homogenous, label-free, and high-performance bioassay in terms of its convenience and high sensitivity. Under the optimal conditions, changes in the absorption intensity at 652 nm for the oxidized TMB provides a good linear correlation with the logarithm of CAP concentrations in the range 0.1 pM to 100 nM, and the limit of detection was 0.033 pM (calculated from 3σ/s). Considering a vast number of bioreactions can be connected to dNMP production, we expect the engineerable nanozyme as a universal signal transduction scaffold for versatile applications in bioassays. Through the attachment of deoxyribonucleoside 5'-monophosphate (dNMP) on the surface of CBS to regulate the generation of self-coordinated nanozyme CBS/BiHCF, a homogeneous, label-free, and high-performance universal aptasensing platform was constructed.
Collapse
Affiliation(s)
- Yanru Chen
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Lingling Zhao
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Xiuming Wu
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Yuming Dong
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Guang-Li Wang
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| |
Collapse
|
5
|
Liu Z, Deng K, Zhang H, Li C, Wang J, Huang H, Yi Q, Zhou H. Dual-mode photoelectrochemical/electrochemical sensor based on Z-scheme AgBr/AgI-Ag-CNTs and aptamer structure switch for the determination of kanamycin. Mikrochim Acta 2022; 189:417. [PMID: 36242691 DOI: 10.1007/s00604-022-05523-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 09/30/2022] [Indexed: 10/17/2022]
Abstract
A "signal-on" dual-mode aptasensor based on photoelectrochemical (PEC) and electrochemical (EC) signals was established for kanamycin (Kana) assay by using a novel Z-scheme AgBr/AgI-Ag-CNTs composite as sensing platform, an aptamer structure switch, and K3[Fe(CN)6] as photoelectron acceptor and electrochemical signal indicator. The aptamer structure switch was designed to obtain a "signal-off" state, which included an extended Kana aptamer (APT), one immobilized probe (P1), and one blocking probe (P2) covalently linked with graphdiyne oxide (GDYO) nanosheets. P1, P2, and aptamer formed the double helix structure, which resulted in the inhibited photocurrent intensity because of the weak conductivity of double helix layer and serious electrostatic repulsion of GDYO towards K3[Fe(CN)6]. In the presence of Kana, APT specifically bound to the target and dissociated from P1 and P2, and thus, a "signal-on" state was initiated by releasing P2-GDYO from the platform. Based on the sensing platform and the aptamer structure switch, the dual-mode aptasensor realized the linear determination ranges of 1.0 pM-2.0 μM with a detection limit (LOD) of 0.4 pM (for PEC method) and 10 pM-5.0 μM with a LOD of 5 pM (for EC method). The aptasensor displayed good application potential for Kana test in real samples.
Collapse
Affiliation(s)
- Zhang Liu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, People's Republic of China.,Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Keqin Deng
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, People's Republic of China. .,Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China.
| | - Heng Zhang
- Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Chunxiang Li
- Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Jinglun Wang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, People's Republic of China
| | - Haowen Huang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, People's Republic of China
| | - Qingfeng Yi
- Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Hu Zhou
- Hunan Province College Key Laboratory of Molecular Design and Green Chemistry, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| |
Collapse
|
6
|
The peroxidase-like catalytic activity of in situ prepared cobalt carbonate and its applications in colorimetric detection of hydrogen peroxide, glucose and ascorbic acid. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Peng LJ, Zhou HY, Zhang CY, Yang FQ. Study on the peroxidase-like activity of cobalt phosphate and its application in colorimetric detection of hydrogen peroxide. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
8
|
Zhang L, Zhang Q, Liu Q, Wu X, Dong Y, Wang GL. Smart nanozyme of silver hexacyanoferrate with versatile bio-regulated activities for probing different targets. Talanta 2021; 228:122268. [PMID: 33773716 DOI: 10.1016/j.talanta.2021.122268] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/22/2021] [Accepted: 02/27/2021] [Indexed: 12/26/2022]
Abstract
Smart nanozymes that can be facile and rapidly produced, while with efficiently bio-regulated activity, are attractive for biosensing applications. Herein, a smart nanozyme, silver hexacyanoferrate (Ag4[Fe(CN)6]), was constructed in situ via the rapid, direct reaction between silver(I) and K4[Fe(CN)6]. And the activity of the nanozyme can be rationally modulated by different enzymatic reactions including the glucose oxidase (GOx, taken as a model oxidoreductase), alkaline phosphatase (ALP), and acetylcholinesterase (AChE). On the basis of which, a multiple function platform for the highly sensitive detection of glucose, ALP and AChE were developed through colorimetry. Corresponding detection limits for the above three targets were found to be as low as 0.32 μM, 3.3 U/L and 0.083 U/L (S/N = 3), respectively. The present study provides a novel nanozyme that can be produced in situ, which rules out the harsh, cumbersome, and time-consuming synthesis/purification procedures. In addition, it establishes a multiple function platform for the amplified detection of versatile targets by the aid of the developed nanozyme, whose detection has the advantages of low cost, ease-of-use, high sensitivity, and good selectivity.
Collapse
Affiliation(s)
- Lan Zhang
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Qi Zhang
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Qingyun Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Xiuming Wu
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Yuming Dong
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China
| | - Guang-Li Wang
- Key Laboratory of Synthetic and Biological Colloids (Ministry of Education), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| |
Collapse
|
9
|
He Y, He C, Wang F, Guo X, Zhao Z, Zhang X, Chen X, Liu X. Efficient degradation of Congo red and phenol by a new photocatalyst Ag/AgBr-Al-attapulgite composite under visible light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-12737-9. [PMID: 33641095 DOI: 10.1007/s11356-021-12737-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
Nowadays the concern on the treatment of refractory organic pollutants (e.g., Congo red and phenolic compounds) in industrial wastewaters and their treated effluents with conventional technologies has been still continuously increasing. In this study, a novel visible light photocatalyst material, Ag/AgBr and Al loading on the attapulgite (ATP), was prepared for efficiently catalyzing the photodegradation of the two refractory substances, and its photocatalytic performance and recyclability were assessed. Results from transmission electron microscopy and X-ray diffraction confirmed the successful loading of Ag/AgBr and Al on the ATP. The prepared Ag/AgBr-Al-ATP composite presented substantially better catalytic performance than Ag/AgBr alone probably because the ATP as a carrier of catalyst provided more contact surface for catalyst Ag/AgBr and Congo red/phenol. In the Ag/AgBr-Al-ATP composite, the photocatalyst AgBr content increased from 20.4 to 34.9% due to the modification of ATP by Al. Correspondingly, the Ag/AgBr-Al-ATP composite presented its excellent photocatalytic performance under visible light irradiation: photodegradation efficiencies of Congo red and phenol of 1.73 mg/100 mg and 0.86 mg/100 mg were achieved. With the increase of pH, the photolysis efficiencies of Congo red and phenol both first increased and then decreased, whereas the optimal photocatalytic performance occurred at pH 7 for Congo red and pH 10 for phenol. The Ag/AgBr-Al composite presented a high catalytic activity for photolysis of Congo red and phenol in all the four consecutive reused cycles. The results in this study comprehensively demonstrated a promising photocatalyst for efficient removal of the similar refractory organics presented in industrial wastewaters, which deserves further investigation and development.
Collapse
Affiliation(s)
- Yun He
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Chiquan He
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Feifei Wang
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China.
| | - Xuanlin Guo
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Zhenzhen Zhao
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Xinying Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Xueping Chen
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| | - Xiaoyan Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shangda Road 99, Shanghai, 200444, China
| |
Collapse
|
10
|
Zhang X, Yang P, Yang B, Bai Y, Liu W, Zhang Y. Evaluation of synergistic effect from Ag-AgCl 1/3Br 1/3I 1/3 composite on photocatalytic degradation the oil field pollutants. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 247:119029. [PMID: 33120123 DOI: 10.1016/j.saa.2020.119029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 09/27/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
A series of Ag/AgX (X = Cl, Br, I; X = Cl, Br, or X = Cl, I, or X = Br, I; X = Cl, Br, and I) composite photocatalysts were synthesized via a facile photoreduction. The several characterization methods of X-ray diffraction (XRD), energy dispersive X-ray spectrometry (EDS) mapping and X-ray photoelectron spectroscopy (XPS) were characterized the samples. Through evaluation the photocatalytic activity of degradation rhodamine, methyl orange, and phenol, Ag-AgCl1/3Br1/3I1/3 exhibited the superior selective photocatalytic activities than other photocatalysts. The reason for improved photocatalytic property of Ag-AgCl1/3Br1/3I1/3 was attributed to the multifarious halogen atoms with the synergistic effect and the surface plasmon resonance (SPR) effect of Ag0. Furthermore, the recycle experiments were conducted to reveal the stability and reusability, the trapping experiments confirmed the active species of Ag-AgCl1/3Br1/3I1/3.
Collapse
Affiliation(s)
- Xu Zhang
- School of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Ping Yang
- Sichuan Province Academy of Industrial Environmental Monitoring, Chengdu 610045, China; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Bo Yang
- College of electrical and mechanical engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Yang Bai
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Oil & Natural Gas Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Weihua Liu
- School of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China.
| | - Yi Zhang
- National and Local Joint Engineering Research Center of Shale Gas Exploration and Development, Chongqing 401120, China; Institute of Geology and Mineral Resources, Chongqing 401120, China
| |
Collapse
|
11
|
Xiao JQ, Mdlovu NV, Lin KS, Chang CJ, Chen ZW. Degradation of rhodamine B under visible-light with nanotubular Ag@AgCl@AgI photocatalysts. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
12
|
Gao M, An P, Rao H, Niu Z, Xue X, Luo M, Liu X, Xue Z, Lu X. Molecule-gated surface chemistry of Pt nanoparticles for constructing activity-controllable nanozymes and a three-in-one sensor. Analyst 2020; 145:1279-1287. [PMID: 31867591 DOI: 10.1039/c9an01956a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Herein, a simple strategy for constructing activity-controllable nanozymes is proposed based on the glutathione (GSH)-gated surface chemistry of citrate-capped Pt nanoparticles (PtNPs). PtNPs have been shown to have oxidase-like activity that can effectively catalyze the oxidation of 3,3',5,5'-tertamethylbenzidine (TMB) by O2, resulting in a typical color reaction from colorless to blue. We found that GSH can inhibit the oxidase-like activity of PtNPs as a molecule-gated surface chemistry element, resulting in a dramatic decrease of the oxidation of TMB. The addition of copper ions (Cu2+) could oxidize GSH into glutathione disulfide (GSSG), resulting in the distinct suppression of GSH-modulated PtNP surface chemistry and oxidase-like activity inhibition, which further results in a significant acceleration of TMB oxidation and the obvious recovery of intense blue color. Furthermore, the color-based detection signal associated with the redox of TMB indicator here was found to show good fluorescence and a photothermal effect and exhibit sensitive and selective response toward the proposed molecule-gated surface chemistry and Cu2+ target. On the basis of this phenomenon, we successfully constructed a three-in-one sensor for Cu2+ with a triple signal readout, colorimetric, photothermal (temperature), and fluorescence, depending on the proposed in situ modulation method for PtNP catalysis. The applicability of the three-in-one sensor was also demonstrated by measuring Cu2+ in human serum with a standard addition method, and the results are of satisfactory accuracy as confirmed by ICP-MS measurements.
Collapse
Affiliation(s)
- Min Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Naya SI, Tada H. Au-Ag alloy nanoparticle-incorporated AgBr plasmonic photocatalyst. Sci Rep 2020; 10:19972. [PMID: 33203927 PMCID: PMC7673129 DOI: 10.1038/s41598-020-77062-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/05/2020] [Indexed: 11/17/2022] Open
Abstract
A solid-phase photochemical method produces Au-Ag alloy nanoparticles (NPs) with a sharp size distribution and varying composition in AgBr crystals (Au-Ag@AgBr). These features render Au-Ag@AgBr promising as a material for the plasmonic photocatalyst further to provide a possibility of elucidating the action mechanism due to the optical tunability. This study shows that the visible-light activity of Au-Ag@AgBr for degradation of model water pollutant is very sensitive to the alloy composition with a maximum at the mole percent of Au to all Ag in AgBr (y) = 0.012 mol%. Clear positive correlation is observed between the photocatalytic activity and the quality factor defined as the ratio of the peak energy to the full width at half maximum of the localized surface plasmon resonance band. This finding indicates that Au-Ag@AgBr works as a local electromagnetic field enhancement-type plasmonic photocatalyst in which the Au-Ag NPs mainly promotes the charge separation. This conclusion was further supported by the kinetic analysis of the light intensity-dependence of external quantum yield.
Collapse
Affiliation(s)
- Shin-Ichi Naya
- Environmental Research Laboratory, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Hiroaki Tada
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
| |
Collapse
|
14
|
Li S, Ma R, Pei Y, Mao B, Lu H, Yang M, Thomas T, Liu D, Wang J. Geometric Structure and Electronic Polarization Synergistically Boost Hydrogen Evolution Kinetics in Alkaline Medium. J Phys Chem Lett 2020; 11:3436-3442. [PMID: 32282220 DOI: 10.1021/acs.jpclett.0c00703] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Efficient electrocatalysts for the hydrogen evolution reaction (HER) are significant for the utilization of hydrogen as a fuel, particularly under alkaline conditions. However, the sluggish kinetics of HER remains a challenge. Here we demonstrate an efficient HER catalyst comprising Ru and AgCl nanoparticles anchored on Ag nanowires (Ru/AgCl@Ag), which delivers a low overpotential of 12 mV at 10 mA cm-2 and a Tafel slope of 38 mV decade-1. A high mass activity of 214 mA mg-1 at an overpotential of 25 mV and a long-term durability in 1.0 M KOH are observed. In combination with computational simulations, we find that the high electronegativity of chlorine in AgCl and d-band electrons from Ru synergistically destabilize the water molecule and modulate H adsorption/desorption on the surface of Ru/AgCl@Ag, respectively. This work opens a promising avenue for the facile design and application of highly active and stable composite electrocatalysts toward water splitting.
Collapse
Affiliation(s)
- Shanlin Li
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Ruguang Ma
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Yu Pei
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Baohua Mao
- Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Hongliang Lu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Adyar, Chennai 600036, Tamil Nadu, India
| | - Danmin Liu
- Beijing Key Laboratory of Microstructure and Properties of Solids, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
| | - Jiacheng Wang
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| |
Collapse
|
15
|
Zhang X, Yang P, Bai Y, Yang B, Liu W. Synthesis of efficient composite photocatalysts from solid solution Bi3O4Cl0.5Br0.5 and Ag-AgI/AgCl for decomposition the oil field pollutants of phenol and acrylamide. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.12.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
16
|
Ma J, Yang S, Shi H, Pang J, Zhang X, Wang Y, Sun H. An efficient and robust exfoliated bentonite/Ag3PO4/AgBr plasmonic photocatalyst for degradation of parabens. RSC Adv 2020; 10:16027-16037. [PMID: 35493642 PMCID: PMC9052784 DOI: 10.1039/d0ra02455d] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/08/2020] [Indexed: 12/18/2022] Open
Abstract
Efficient visible-light-driven heterojunction photocatalysts have attracted broad interest owing to their promising adsorption and degradation performances in the removal of organic pollutants. In this study, a mesoporous exfoliated bentonite (EB)/Ag3PO4/AgBr (30%) photocatalyst was obtained by stripping and exfoliating bentonite as the support for loading Ag3PO4 and AgBr. The particle size ranges of Ag3PO4 and AgBr were about 10–30 nm and 5–10 nm, respectively. The exfoliated bentonite could greatly improve the dispersion and adsorption of Ag3PO4 and AgBr, and significantly enhance the stability of the material during paraben photodegradation. 0.2 g L−1 methylparaben (MPB) was completely decomposed over the EB/Ag3PO4/AgBr (30%) in 40 min under visible light irradiation. In addition, the photocatalytic activity of EB/Ag3PO4/AgBr (30%) remained at about 91% after five recycling runs manifesting that EB/Ag3PO4/AgBr (30%) possessed excellent stability. Radical quenching tests revealed that holes (h+) and hydroxyl radicals (·OH) were the major radicals. They attacked the side chain on the benzene ring of parabens, which were gradually oxidized to the intermediates, such as benzoic acid, 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, azelaic acid, and eventually became CO2 and H2O. The enhancement of photocatalytic activity and photo-stability could be ascribed to the stable structural characteristics, enlarged surface area, high absorption ability, and improved light absorption ability from loading Ag3PO4 onto EB. Meanwhile, the matched energy levels of Ag3PO4 and AgBr made the photoelectron–hole pairs separate and transfer effectively at the interfaces. As a result, the photocatalytic properties of EB/Ag3PO4/AgBr (30%) composites were enhanced. A mesoporous exfoliated bentonite (EB)/Ag3PO4/AgBr (30%) photocatalyst was designed to combine various functions to achieve efficient photodegradation of parabens.![]()
Collapse
Affiliation(s)
- Jianchao Ma
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Shurong Yang
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Huixian Shi
- Institute of New Carbon Materials
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Jin Pang
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiaopeng Zhang
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Yuxing Wang
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Hongqi Sun
- School of Engineering
- Edith Cowan University
- Joondalup
- Australia
| |
Collapse
|
17
|
Tamiji T, Nezamzadeh-Ejhieh A. Electrocatalytic behavior of AgBr NPs as modifier of carbon past electrode in the presence of methanol and ethanol in aqueous solution: A kinetic study. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.08.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
18
|
CaF 2 nanoparticles as peroxidase mimics for rapid and sensitive detection of aldosterone. Anal Chim Acta 2019; 1078:119-124. [PMID: 31358209 DOI: 10.1016/j.aca.2019.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 05/28/2019] [Accepted: 06/03/2019] [Indexed: 12/21/2022]
Abstract
In this work, CaF2 nanoparticles were successfully synthesized by a simple direct precipitation method and firstly used as a peroxidase mimics for rapid and high sensitive colorimetric detection of aldosterone. The CaF2 nanoparticles were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM) and powder X-ray diffraction (XRD). The CaF2 nanoparticles can oxidize 3,3',5,5'-tetramethylbenzidine (TMB) to produce a blue product oxidized TMB (oxTMB) in the presence of H2O2 and this peroxidase-like activity of CaF2 is found out to follow Michaelis-Menten kinetics. Experiments showed that the catalytic mechanism of CaF2 nanoparticles was attributed to that it could result in the decomposition of H2O2 to produce hydroxyl radicals (•OH). The absorbance change value of the reaction system was linear with the aldosterone concentration in the range of 2.0-40.0 nM, and the detection limit was 0.6 nM. Moreover, the developed method was applied to detect aldosterone in human serum samples. It provides a new platform for enzyme functional simulation and analytical sensing research.
Collapse
|
19
|
Abstract
Nanoscale composites consisting of silver and silver halide (Ag–AgX, X = Cl, Br, I) have attracted much attention as a novel type of visible-light photocatalyst (the so-called plasmonic photocatalysts), for solar-to-chemical transformations. Support-free Au–Ag alloy nanoparticle-incorporated AgBr crystals (Au–Ag@AgBr) were synthesized by a photochemical method. At the initial step, Au ion-doped AgBr particles were prepared by adding an aqueous solution of AgNO3 to a mixed aqueous solution of KBr and HAuBr4. At the next step, UV-light illumination (λ = 365 nm) of a methanol suspension of the resulting solids yielded Au–Ag alloy nanoparticles with a mean size of approximately 5 nm in the micrometer-sized AgBr crystals. The mole percent of Au to all the Ag in Au–Ag@AgBr was controlled below < 0.16 mol% by the HAuBr4 concentration in the first step. Finite-difference time-domain calculations indicated that the local electric field enhancement factor for the alloy nanoparticle drastically decreases with an increase in the Au content. Also, the peak of the localized surface plasmon resonance shifts towards longer wavelengths with increasing Au content. Au–Ag@AgBr is a highly promising plasmonic photocatalyst for sunlight-driven chemical transformations due to the compatibility of the high local electric field enhancement and sunlight harvesting efficiency.
Collapse
|
20
|
Synthesis and Characterization of the All Solid Z-Scheme Bi2WO6/Ag/AgBr for the Photocatalytic Degradation of Ciprofloxacin in Water. Top Catal 2019. [DOI: 10.1007/s11244-019-01190-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
21
|
Chen G, Wang G, Gu Y, Wu Z, Ye C. Unravelling the detrimental effect of water in the polyol synthesis of ultrathin silver nanowires. CrystEngComm 2019. [DOI: 10.1039/c9ce00770a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Generation of particle by-products during the synthesis of ultrathin silver nanowires can be suppressed via eliminating water in a precursor mixing step.
Collapse
Affiliation(s)
- Guinan Chen
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Guixin Wang
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yujia Gu
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Zelei Wu
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Changhui Ye
- College of Materials Science and Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| |
Collapse
|
22
|
Xiao JQ, Lin KS, Yu Y. Novel Ag@AgCl@AgBr heterostructured nanotubes as high-performance visible-light photocatalysts for decomposition of dyes. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.04.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
23
|
Fan Y, Bao Y, Song Z, Sun Z, Wang D, Han D, Niu L. Controllable synthesis of coloured Ag 0/AgCl with spectral analysis for photocatalysis. RSC Adv 2018; 8:24812-24818. [PMID: 35542155 PMCID: PMC9082299 DOI: 10.1039/c8ra04180f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 06/29/2018] [Indexed: 11/21/2022] Open
Abstract
Broad spectrum absorption of semiconductor photocatalysts is an essential requirement to achieve the best values of solar energy utilization. Here, through precise surface state adjustment, coaxial tri-cubic Ag0/AgCl materials with distinct apparent colours (blue and fuchsia) were successfully fabricated. The reasons for the different colour generation of the Ag0/AgCl materials were investigated by performing corresponding spectrum analysis. It was revealed that Ag0/AgCl-blue and Ag0/AgCl-fuchsia crystals could efficiently boost the photon energy harvesting, spanning from the UV to near-infrared spectral region (250-800 nm), and achieved 2.6 and 5.4 times the wastewater degradation efficiency of AgCl-white. Simultaneously, these two fresh coloured candidates were demonstrated to have preferable photocatalytic CO2 photoreduction capability, with yields of ∼3.6 (Ag0/AgCl-fuchsia) and 2.6 (Ag0/AgCl-blue) times that of AgCl-white. It is expected that this work will provide a beneficial perspective for understanding the solar absorption feature at both the major structure modulation and particular surface state regulation level.
Collapse
Affiliation(s)
- Yingying Fan
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
| | - Yu Bao
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
| | - Zhongqian Song
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Science Changchun 130022 Jilin China
| | - Zhonghui Sun
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
| | - Dandan Wang
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
| | - Dongxue Han
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Science Changchun 130022 Jilin China
| | - Li Niu
- Center for Advanced Research on Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University Guangzhou 510006 P. R. China
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Science Changchun 130022 Jilin China
| |
Collapse
|
24
|
AgBr and AgCl nanoparticle doped TEMPO-oxidized microfiber cellulose as a starting material for antimicrobial filter. Carbohydr Polym 2018; 191:266-279. [DOI: 10.1016/j.carbpol.2018.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 03/08/2018] [Accepted: 03/08/2018] [Indexed: 02/07/2023]
|
25
|
Wang GL, Li XQ, Cao GX, Yuan F, Dong Y, Li Z. A novel photoswitchable enzyme cascade for powerful signal amplification in versatile bioassays. Chem Commun (Camb) 2018; 53:11165-11168. [PMID: 28951901 DOI: 10.1039/c7cc05771g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This report outlines the construction of an advanced, exquisite photoswitchable enzyme cascade on the basis that tyrosinase (TYR) catalyzes the generation of dihydroxyphenylalanine (DOPA) coordinated TiO2 nanoparticles (NPs) to form a light responsive nano-trigger that subsequently photoactivates the enzymatic activity of horseradish peroxidase (HRP). This photoswitchable enzyme cascade has a powerful signal transduction/amplification ability in TYR-based bioassays, and holds great promise to be applied in versatile applications.
Collapse
Affiliation(s)
- Guang-Li Wang
- The Key Laboratory of Synthetic Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China.
| | | | | | | | | | | |
Collapse
|
26
|
Peng C, Reid G, Wang H, Hu P. Perspective: Photocatalytic reduction of CO2 to solar fuels over semiconductors. J Chem Phys 2017; 147:030901. [DOI: 10.1063/1.4985624] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Affiliation(s)
- Chao Peng
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, United Kingdom
| | - Glenn Reid
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, United Kingdom
| | - Haifeng Wang
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - P. Hu
- Key Laboratory for Advanced Materials, Center for Computational Chemistry and Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, United Kingdom
| |
Collapse
|
27
|
Advances in Photocatalytic CO₂ Reduction with Water: A Review. MATERIALS 2017; 10:ma10060629. [PMID: 28772988 PMCID: PMC5553537 DOI: 10.3390/ma10060629] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/04/2017] [Accepted: 05/23/2017] [Indexed: 12/20/2022]
Abstract
In recent years, the increasing level of CO₂ in the atmosphere has not only contributed to global warming but has also triggered considerable interest in photocatalytic reduction of CO₂. The reduction of CO₂ with H₂O using sunlight is an innovative way to solve the current growing environmental challenges. This paper reviews the basic principles of photocatalysis and photocatalytic CO₂ reduction, discusses the measures of the photocatalytic efficiency and summarizes current advances in the exploration of this technology using different types of semiconductor photocatalysts, such as TiO₂ and modified TiO₂, layered-perovskite Ag/ALa₄Ti₄O15 (A = Ca, Ba, Sr), ferroelectric LiNbO₃, and plasmonic photocatalysts. Visible light harvesting, novel plasmonic photocatalysts offer potential solutions for some of the main drawbacks in this reduction process. Effective plasmonic photocatalysts that have shown reduction activities towards CO₂ with H₂O are highlighted here. Although this technology is still at an embryonic stage, further studies with standard theoretical and comprehensive format are suggested to develop photocatalysts with high production rates and selectivity. Based on the collected results, the immense prospects and opportunities that exist in this technique are also reviewed here.
Collapse
|
28
|
Wu W, Lv X, Wang J, Xie J. Integrating AgI/AgBr biphasic heterostructures encased by few layer h-BN with enhanced catalytic activity and stability. J Colloid Interface Sci 2017; 496:434-445. [PMID: 28254610 DOI: 10.1016/j.jcis.2017.02.046] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/13/2017] [Accepted: 02/19/2017] [Indexed: 11/19/2022]
Abstract
Using freshly prepared water-soluble KBr crystal as facile, low-cost sacrificial template, AgBr nanocubes were synthesized through one-pot precipitation method, then navy bean shaped AgI/AgBr biphasic heterostructures were synthesized through anion-exchange reaction and encased within few-layer h-BN to obtain final product. The obtained heterostructured AgI/AgBr/h-BN composite without plasmonic noble metal nanoparticles was used as stable and high active photocatalyst for dye degradation under visible light irradiation, comparing both with self-prepared normal AgBr, AgBr cubes, AgI/AgBr navy beans and other related catalysts reported in the literature. The significant boosting of activity was attributed to the formation of AgI/AgBr interface and the coupling of few-layer h-BN, the latter of which not only effectively suppresses the reduction of silver ions but greatly enhance the charge separation. Furthermore, it was suggested that the photogenerated holes and superoxide radical were the main active species according to photoelectron chemical measurements, electron spin resonance spin-trap analysis and radical trapping experiments. Finally, the possible mechanism of enhanced photocatalytic activity and stability was discussed and proposed. The work demonstrates that engineering Ag-based semiconductor coupling with h-BN would profit the design strategy for low-cost, solar-driven photocatalysts.
Collapse
Affiliation(s)
- Wen Wu
- Department of Chemistry, Zhou Kou Normal University, Henan 466001, PR China
| | - Xiaomeng Lv
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Jiaxi Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jimin Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| |
Collapse
|
29
|
Zhang S, Zhang H, Wang S, Liu L, Liu S. Singlet oxygen formation in bio-inspired synthesis of a hollow Ag@AgBr photocatalyst for microbial and chemical decontamination. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01131h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Singlet oxygen has been identified as a contributor to the degradation of contaminants using biosynthesised hollow Ag@AgBr catalysts.
Collapse
Affiliation(s)
- S. Zhang
- Department of Orthopaedics
- First Hospital of Jilin University
- China
| | - H. Zhang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - S. Wang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - L. Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - S. Liu
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| |
Collapse
|
30
|
Zheng H, Li P, Gao L, Li G. Hexagonal AgBr crystal plates for efficient photocatalysis through two methods of degradation: methyl orange oxidation and CrVI reduction. RSC Adv 2017. [DOI: 10.1039/c7ra02354e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Well-defined AgBr-hexagonal crystal plates have been synthesized, which manifested high photocatalytic properties in both the photo-reduction of CrVI and the photo-oxidation of methyl orange (MO).
Collapse
Affiliation(s)
- Hui Zheng
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| | - Peng Li
- Institute of Forensic Science
- Ministry of Public Security
- Beijing 100038
- China
| | - Lisheng Gao
- Institute of Forensic Science
- Ministry of Public Security
- Beijing 100038
- China
| | - Guangming Li
- Key Laboratory of Functional Inorganic Material Chemistry (MOE)
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin
- P. R. China
| |
Collapse
|
31
|
In Situ Enzymatically Generated Photoswitchable Oxidase Mimetics and Their Application for Colorimetric Detection of Glucose Oxidase. Molecules 2016; 21:molecules21070902. [PMID: 27409598 PMCID: PMC6273347 DOI: 10.3390/molecules21070902] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 06/26/2016] [Accepted: 07/07/2016] [Indexed: 01/13/2023] Open
Abstract
In this study, a simple and amplified colorimetric assay is developed for the detection of the enzymatic activity of glucose oxidase (GOx) based on in situ formation of a photoswitchable oxidase mimetic of PO43−-capped CdS quantum dots (QDs). GOx catalyzes the oxidation of 1-thio-β-d-glucose to give 1-thio-β-d-gluconic acid which spontaneously hydrolyzes to β-d-gluconic acid and H2S; the generated H2S instantly reacts with Cd2+ in the presence of Na3PO4 to give PO43−-stabilized CdS QDs in situ. Under visible-light (λ ≥ 400 nm) stimulation, the PO43−-capped CdS QDs are a new style of oxidase mimic derived by producing some active species, such as h+, •OH, O2•− and a little H2O2, which can oxidize the typical substrate (3,3,5,5-tetramethylbenzydine (TMB)) with a color change. Based on the GOx-triggered growth of the oxidase mimetics of PO43−-capped CdS QDs in situ, we developed a simple and amplified colorimetric assay to probe the enzymatic activity of GOx. The proposed method allowed the detection of the enzymatic activity of GOx over the range from 25 μg/L to 50 mg/L with a low detection limit of 6.6 μg/L. We believe the PO43−-capped CdS QDs generated in situ with photo-stimulated enzyme-mimicking activity may find wide potential applications in biosensors.
Collapse
|
32
|
Xiao Z, Zhou Y, Xin X, Zhang Q, Zhang L, Wang R, Sun D. Iron(III) Porphyrin-Based Porous Material as Photocatalyst for Highly Efficient and Selective Degradation of Congo Red. MACROMOL CHEM PHYS 2015. [DOI: 10.1002/macp.201500404] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhenyu Xiao
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Yan Zhou
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Xuelian Xin
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Qinhui Zhang
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Liangliang Zhang
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Rongming Wang
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| | - Daofeng Sun
- State Key Laboratory of Heavy Oil Processing; College of Science; China University of Petroleum (East China); Qingdao Shandong 266580 P. R. China
| |
Collapse
|
33
|
Yang Y, Zhao Y, Yan Y, Wang Y, Guo C, Zhang J. Preparation of AgCl Nanocubes and Their Application as Efficient Photoinitiators in the Polymerization of N-Isopropylacrylamide. J Phys Chem B 2015; 119:14807-13. [DOI: 10.1021/acs.jpcb.5b06791] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ying Yang
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Yan Zhao
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Yukun Yan
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Yanli Wang
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Changyou Guo
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Jinsong Zhang
- Institute
of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| |
Collapse
|
34
|
Jin LY, Dong YM, Wu XM, Cao GX, Wang GL. Versatile and Amplified Biosensing through Enzymatic Cascade Reaction by Coupling Alkaline Phosphatase in Situ Generation of Photoresponsive Nanozyme. Anal Chem 2015; 87:10429-36. [PMID: 26419907 DOI: 10.1021/acs.analchem.5b02728] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The alkaline phosphatase (ALP) biocatalysis followed by the in situ enzymatic generation of a visible light responsive nanozyme is coupled to elucidate a novel amplification strategy by enzymatic cascade reaction for versatile biosensing. The enzymatic hydrolysis of o-phosphonoxyphenol (OPP) to catechol (CA) by ALP is allowed to coordinate on the surface of TiO2 nanoparticles (NPs) due to the specificity and high affinity of enediol ligands to Ti(IV). Upon the stimuli by CA generated from ALP, the inert TiO2 NPs is activated, which demonstrates highly efficient oxidase mimicking activity for catalyzing the oxidation of the typical substrate of 3,3',5,5'-tetramethylbenzidine (TMB) under visible light (λ ≥ 400 nm) irradiation utilizing dissolved oxygen as an electron acceptor. On the basis of the cascade reaction of ALP and the nanozyme of CA coordinated TiO2 (TiO2-CA) NPs, we design exquisitely colorimetric biosensors for probing ALP activity and its inhibitor of 2, 4-dichlorophenoxyacetic acid (2,4-DA). Quantitative probing of ALP activity in a wide linear range from 0.01 to 150 U/L with the detection limit of 0.002 U/L is realized, which endows the methodology with sufficiently high sensitivity for potentially practical applications in real samples of human serum (ALP level of 40-190 U/L for adults). In addition, a novel immunoassay protocol by taking mouse IgG as an example is validated using the ALP/nanozyme cascade amplification reaction as the signal transducer. A low detection limit of 2.0 pg/mL is attained for mouse IgG, which is 4500-fold lower than that of the standard enzyme-linked immuno-sorbent assay (ELISA) kit. Although only mouse IgG is used as a proof-of-concept in our experiment, we believe that this approach is generalizable to be readily extended to other ELISA systems. This methodology opens a new horizon for amplified and versatile biosensing including probing ALP activity and following ALP-based ELISA immunoassays.
Collapse
Affiliation(s)
- Lu-Yi Jin
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, Jiangsu, China
| | - Yu-Ming Dong
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, Jiangsu, China
| | - Xiu-Ming Wu
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, Jiangsu, China
| | - Gen-Xia Cao
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, Jiangsu, China
| | - Guang-Li Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, Jiangsu, China.,State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University , Nanjing 210093, Jiangsu, China
| |
Collapse
|
35
|
Feng C, Dong Y, Jiang P, Wang G, Zhang J, Wu X, Zhang C. AgBi(WO4)2 : A New Modification Material to Bi2 WO6 for Enhanced and Stable Visible-Light Photocatalyic Performance. Chem Asian J 2015; 10:1948-52. [PMID: 26154778 DOI: 10.1002/asia.201500523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 06/22/2015] [Indexed: 11/11/2022]
Abstract
In this work, we report a novel AgBi(WO4 )2 -Bi2 WO6 heterostructure, which was designed and synthesized by using a simple hydrothermal method. Methyl orange was used as a representative dye indicator to evaluate the visible-light catalytic activity and the catalytic mechanism was investigated. The as-synthesized AgBi(WO4 )2 -Bi2 WO6 composite displayed a 43 times higher photocatalytic activity than Bi2 WO6 . Owing to the matched band gap and distinctive heterostructure, AgBi(WO4 )2 -Bi2 WO6 reveals a high visible-light response and high-efficiency utilization of both photogenerated electrons and holes. AgBi(WO4 )2 reveals a similar energy level to and good lattice match with Bi2 WO6 , which are favorable qualities for band bending and fluent electron transfer. Furthermore, the photoexcited electrons can produce oxygen to generate (.) O2 (-) radicals, which is vital for the overall utilization of both holes and electrons. This is the first example of AgBi(WO4 )2 being used as photocatalytic material.
Collapse
Affiliation(s)
- Cuiyun Feng
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Yuming Dong
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China.
| | - Pingping Jiang
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Guangli Wang
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Jingjing Zhang
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Xiuming Wu
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| | - Chi Zhang
- Key Laboratory of Food Colloids and Biotechnology, (Ministry of Education of China), School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P.R. China
| |
Collapse
|
36
|
Wang GL, Jin LY, Wu XM, Dong YM, Li ZJ. Label-free colorimetric sensor for mercury(II) and DNA on the basis of mercury(II) switched-on the oxidase-mimicking activity of silver nanoclusters. Anal Chim Acta 2015; 871:1-8. [DOI: 10.1016/j.aca.2015.02.027] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 02/06/2015] [Accepted: 02/10/2015] [Indexed: 12/23/2022]
|
37
|
Intrinsic enzyme mimicking activity of gold nanoclusters upon visible light triggering and its application for colorimetric trypsin detection. Biosens Bioelectron 2015; 64:523-9. [DOI: 10.1016/j.bios.2014.09.071] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/12/2014] [Accepted: 09/25/2014] [Indexed: 01/14/2023]
|
38
|
Liu Z, Guo W, Guo C, Liu S. Fabrication of AgBr nanomaterials as excellent antibacterial agents. RSC Adv 2015. [DOI: 10.1039/c5ra12575h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The excellent disinfection properties of AgBr nanocubes are due to the “dual-punch” of Ag ions induced disturbance to bio-function and AgBr nanocube-induced damage to cellular structure.
Collapse
Affiliation(s)
- Zhouzhou Liu
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Ministry of Education)
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
- School of Life Science and Technology
| | - Wei Guo
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Ministry of Education)
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
- School of Life Science and Technology
| | - Chongshen Guo
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Ministry of Education)
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
| | - Shaoqin Liu
- Key Laboratory of Microsystems and Micronanostructures Manufacturing (Ministry of Education)
- Harbin Institute of Technology
- Harbin 150080
- P. R. China
| |
Collapse
|
39
|
Wang F, Li W, Gu S, Li H, Zhou H, Wu X. Novel In2S3/ZnWO4 heterojunction photocatalysts: facile synthesis and high-efficiency visible-light-driven photocatalytic activity. RSC Adv 2015. [DOI: 10.1039/c5ra16243b] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Novel In2S3/ZnWO4 heterojunction photocatalysts with high-efficiency visible-light-driven photocatalytic activities were synthesized by a hydrothermal and surface-functionalized method.
Collapse
Affiliation(s)
- Fangzhi Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Wenjun Li
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Shaonan Gu
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Hongda Li
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Hualei Zhou
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Xiaobin Wu
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials
- University of Science and Technology Beijing
- Beijing 100083
- China
| |
Collapse
|
40
|
Chi Y, Zhao L, Lu X, An C, Guo W, Liu Y, Wu CML. Effects of subnanometer silver clusters on the AgBr(110) photocatalyst surface: a theoretical investigation. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00705d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The geometrical and electronic structures and photocatalytic performance of subnanometer Agn clusters (n = 2–6) deposited on AgBr(110) are studied under the framework of density functional theory (DFT) plus Hubbard U contributions.
Collapse
Affiliation(s)
- Yuhua Chi
- College of Science
- China University of Petroleum
- Qingdao
- PR China
- Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong Province
| | - Lianming Zhao
- College of Science
- China University of Petroleum
- Qingdao
- PR China
- Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong Province
| | - Xiaoqing Lu
- College of Science
- China University of Petroleum
- Qingdao
- PR China
- Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong Province
| | - Changhua An
- College of Science
- China University of Petroleum
- Qingdao
- PR China
- Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong Province
| | - Wenyue Guo
- College of Science
- China University of Petroleum
- Qingdao
- PR China
- Key Laboratory of New Energy Physics & Materials Science in Universities of Shandong Province
| | - Yunqi Liu
- State Key Laboratory of Heavy Oil Processing
- Key Laboratory of Catalysis
- CNPC
- China University of Petroleum
- Qingdao 266580
| | - Chi-Man Lawrence Wu
- Department of Physics and Materials Science
- City University of Hong Kong
- Hong Kong
- PR China
| |
Collapse
|
41
|
Dong Y, Feng C, Zhang J, Jiang P, Wang G, Wu X, Miao H. A New p-Metal-n Structure AgBr-Ag-BiOBr with Superior Visible-Light-Responsive Catalytic Performance. Chem Asian J 2014; 10:687-93. [DOI: 10.1002/asia.201403217] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Indexed: 11/05/2022]
|
42
|
Wang GL, Xu XF, Qiu L, Dong YM, Li ZJ, Zhang C. Dual responsive enzyme mimicking activity of AgX (X=Cl, Br, I) nanoparticles and its application for cancer cell detection. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6434-6442. [PMID: 24754894 DOI: 10.1021/am501830v] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Chitosan (CS) modified silver halide (AgX, X=Cl, Br, I) (CS-AgX) nanoparticles (NPs) were found to possess dual responsive enzyme mimetic activities. In the presence of H2O2, they were able to oxidize various colorimertic dyes, namely, peroxidase-like activity. Upon photoactivation, CS-AgX NPs could also oxidize the typical substrates in the absence of H2O2. Taking CS-AgI as an example, it was found that the photostimulated enzyme mimetics of CS-AgI NPs showed several unprecedented advantages over natural peroxidase or other existing alternatives based on nanomaterials, such as excellent enzyme-like activity over a broad pH range (3.0-7.0), the independence of hydrogen peroxide on activity, the easily regulated activity by light irradiation, and the good reutilization without significant loss of catalytic activity. The mechanism of the dual responsive enzyme-like activity of CS-AgI was investigated. On the basis of these findings, the photoactivated CS-AgI was designed to develop a facile, cheap, rapid, and highly sensitive colorimetric assay to detect cancer cells. The detection limit of the method for MDA-MB-231 was estimated to be as low as 100 cells, which was much lower than that reported by the method using peroxidase mimetics based on nanomaterials. We believe that CS-AgX NPs with dual responsive enzyme-mimicking activity, especially the excellent photostimulated enzyme-like activity, may find widely potential applications in biosensors.
Collapse
Affiliation(s)
- Guang-Li Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University , Wuxi 214122, P. R. China
| | | | | | | | | | | |
Collapse
|
43
|
Zhu M, Chen C, Chen P, Lei B, Ma W, Liu M. Sunlight-driven Ag-AgCl(1-x)Br(x) photocatalysts: enhanced catalytic performances via continuous bandgap-tuning and morphology selection. Phys Chem Chem Phys 2014; 15:12709-16. [PMID: 23793403 DOI: 10.1039/c3cp51707a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The solid solution (SS) method is an effective way to design impactful photocatalysts, owing to its merit of continuous bandgap-tuning. A calcination, usually breaking the morphology of a material, has to be used to synthesize such catalysts, although the morphology is a critical issue affecting its catalytic behavior. It thus is strongly desired to construct SS-based catalysts with a shaped morphology. Here, we report that AgCl(1-x)Br(x) SS-based photocatalysts, Ag-AgCl(1-x)Br(x), with a shaped morphology, can be produced via an ion-exchange between nanostructured Ag-AgCl and KBr. It is found that when sphere-like Ag-AgCl is employed as a precursor, the Ag-AgCl(1-x)Br(x), maintains its morphology when x is in the range of 0-1. The bandgap, and the catalytic activities of these Ag-AgCl(1-x)Br(x) for the degradation of methyl orange, display a monotonic narrowing and a continuous enhancement, respectively, with the increase of x. In contrast, when cube-like Ag-AgCl is used as a precursor, the Ag-AgCl(1-x)Br(x) preserves its morphological features when x ≤ 0.5, while a morphology distortion is observed when x ≥ 0.75. Fascinatingly, although the bandgap of thus-constructed Ag-AgCl(1-x)Br(x) also exhibits a monotonic narrowing with the increase of x, they (x ≠ 0, 1) display enhanced catalytic activity compared with the two terminal materials, Ag-AgCl and Ag-AgBr, wherein Ag-AgCl0.5Br0.5, with a cube-like morphology, shows the highest catalytic performance. The synergistic effect of morphology selection and bandgap narrowing plays an important role for these intriguing new findings. Our work provides a unique forum for an optimized selection of SS-based photocatalysts in terms of morphology selection and bandgap-tuning.
Collapse
Affiliation(s)
- Mingshan Zhu
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P R China
| | | | | | | | | | | |
Collapse
|
44
|
Song J, Lee I, Roh J, Jang J. Fabrication of Ag-coated AgBr nanoparticles and their plasmonic photocatalytic applications. RSC Adv 2014. [DOI: 10.1039/c3ra45341c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
45
|
Wang GL, Xu XF, Cao LH, He CH, Li ZJ, Zhang C. Mercury(ii)-stimulated oxidase mimetic activity of silver nanoparticles as a sensitive and selective mercury(ii) sensor. RSC Adv 2014. [DOI: 10.1039/c3ra45226c] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
46
|
An C, Wang J, Liu J, Wang S, Zhang QH. Plasmonic enhancement of photocatalysis over Ag incorporated AgI hollow nanostructures. RSC Adv 2014. [DOI: 10.1039/c3ra46527f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
47
|
Cai B, Wang J, Han D, Gan S, Zhang Q, Wu Z, Niu L. Ternary alloyed AgCl(x)Br(1-x) nanocrystals: facile modulation of electronic structures toward advanced photocatalytic performance. NANOSCALE 2013; 5:10989-95. [PMID: 24065184 DOI: 10.1039/c3nr03365a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Manipulating the electronic structure of semiconductor photocatalysts represents an ideal approach for the exploration and development of photocatalysis. However, it still remains a challenge in terms of silver halide photocatalysts. Herein, we report ternary alloyed AgClxBr1-x nanocrystals (NCs) synthesized by controlling the crystal growth process within a facile microemulsion system. The alloyed NCs crystallize in a homogeneous rock-salt crystal structure and possess tunable bandgaps from 2.5 to 3.0 eV obtained by varying the halogen mole ratios (Cl/Br). Their photocatalytic activities for dye degradation and CO2 reduction are found to depend strongly on the chemical compositions, and among them, the AgCl0.75Br0.25 sample exhibits the highest activity (about 2-4 times higher than AgCl and AgBr). Further theoretical calculations demonstrate that a decrease of the ratios of Cl/Br lowers the levels of the conduction band minimum and thereby narrows the bandgaps. Combining the theoretical and experimental results, the highest activity can be rationally ascribed to the optimum conduction band levels, which balances the overall effect of bandgap, electronic coupling and redox potential. This methodological exploration of engineering the bandgap of silver halide materials is a step forward toward the development of advanced photocatalysts and will shed light on devising various semiconductor photocatalytic systems.
Collapse
Affiliation(s)
- Bin Cai
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
| | | | | | | | | | | | | |
Collapse
|
48
|
An C, Wang J, Liu J, Wang S, Sun Y. Hollow AgI:Ag nanoframes as solar photocatalysts for hydrogen generation from water reduction. CHEMSUSCHEM 2013; 6:1931-1937. [PMID: 24105996 DOI: 10.1002/cssc.201300463] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/25/2013] [Indexed: 06/02/2023]
Abstract
A facile strategy based on the principle of the Kirkendall effect has been developed to synthesize hollow nanoframes and nanoshells of AgI:Ag composites through the controlled anion-exchange reaction between I(-) ions and solid AgBr:Ag (or AgCl:Ag) nanoparticles that serve as templates. Regardless of the morphologies of the template nanoparticles, they can be chemically transformed to hollow AgI:Ag structures with morphologies similar to those of the templates. The synthesized hollow AgI:Ag nanostructures can be used as efficient photocatalysts for H2 generation from water reduction and the decomposition of organic pollutants owing to the enhanced absorption of visible light by the Ag components in the hybrid nanostructures. The hollow nanostructures exhibit a higher photocatalytic performance than the corresponding solid nanoparticles possibly because of the large surface area and unique AgI/Ag interfaces associated with the hollow nanostructures.
Collapse
Affiliation(s)
- Changhua An
- State Key Laboratory of Heavy Oil, College of Chemical Engineering and College of Science, China University of Petroleum, Qingdao, 266580 (PR China), Fax: (+86) 532-8698-1787.
| | | | | | | | | |
Collapse
|
49
|
Decorating hierarchical Bi2MoO6 microspheres with uniformly dispersed ultrafine Ag nanoparticles by an in situ reduction process for enhanced visible light-induced photocatalysis. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.02.058] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
50
|
Mao J, Li K, Peng T. Recent advances in the photocatalytic CO2 reduction over semiconductors. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00345k] [Citation(s) in RCA: 210] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|