1
|
Ipadeola AK, Salah B, Ghanem A, Ahmadaliev D, Sharaf MA, Abdullah AM, Eid K. Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures. Heliyon 2023; 9:e16890. [PMID: 37484255 PMCID: PMC10360946 DOI: 10.1016/j.heliyon.2023.e16890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 07/25/2023] Open
Abstract
Morphologically controlled Pd-based nanocrystals are the most efficient strategies for improving the electrocatalytic ethanol oxidation reaction (EOR) performance; however, their morphological-EOR activity relationship and effect of electrolytes at a wide pH range are still ambiguous. Here, we have synthesized porous self-standing Pd clustered nanospheres (Pd-CNSs) and Pd nanocubes (Pd-NCBs) for the EOR in acidic (H2SO4), alkaline (KOH), and neutral (NaHCO3) electrolytes compared to commercial spherical-like Pd/C catalysts. The fabrication process comprises the ice-cooling reduction of Pd precursor by sodium borohydride (NaBH4) and l-ascorbic acid to form Pd-CNSs and Pd-NCBs, respectively. The EOR activity of Pd-CNSs significantly outperformed those of Pd-NCBs, and Pd/C in all electrolytes, but the EOR activity was better in KOH than in H2SO4 and NaHCO3. This is due to the 3D porous clustered nanospherical morphology that makes Pd active centers more accessible and maximizes their utilization during EOR. The EOR specific/mass activities of Pd-CNSs reached (8.51 mA/cm2/2.39 A/mgPd) in KOH, (2.98 mA/cm2/0.88 A/mgPd) in H2SO4, and (0.061 mA/cm2/0.0083 A/mgPd) in NaHCO3, in addition to stability after 1000 cycles. This study affirms that porous 3D spherical Pd nanostructures are preferred for the EOR than those of 0D spherical-like and multi-dimensional cube-like nanostructures.
Collapse
Affiliation(s)
- Adewale K. Ipadeola
- Center for Advanced Materials, Qatar University, Doha, 2713, Qatar
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, Qatar
| | - Belal Salah
- Center for Advanced Materials, Qatar University, Doha, 2713, Qatar
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, Qatar
| | - Alaa Ghanem
- PVT-Lab, Production Department, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt
| | - Doniyorbek Ahmadaliev
- Department of Chemical & Material Science Engineering of School of Engineering, New Uzbekistan University, Tashkent, 100007, Uzbekistan
| | - Mohammed A. Sharaf
- Department of Maritime Transportation Management Engineering, Istanbul University-Cerrahpasa, 34320, Avcilar/Istanbul, Turkey
- Mericler Inc. Educational Consulting, Esentepe, Yazarlar Sk. No 21, 34381, Sisli/Istanbul, Turkey
| | | | - Kamel Eid
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha, 2713, Qatar
| |
Collapse
|
2
|
Kang G, Zhao D, Wang H, Liu F, Wang T, Chen C, Lu Y. Malathion detection based on polydopamine enhanced oxidase-mimetic activity of palladium nanocubes. Talanta 2023; 262:124730. [PMID: 37245431 DOI: 10.1016/j.talanta.2023.124730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/08/2023] [Accepted: 05/23/2023] [Indexed: 05/30/2023]
Abstract
Nowadays, fabricating simple and efficient pesticide detection methods become a research focus due to the great threat pesticide residues posed to human health and environment. Herein, we constructed a high-efficiency and sensitive colorimetric detection platform for malathion detection based on polydopamine-dressed Pd nanocubes (PDA-Pd/NCs). The Pd/NCs coated with PDA exhibited excellent oxidase-like activity, which was attributed to the substrates accumulation and accelerated electron transfer induced by PDA. What's more, we successfully achieved sensitive detection of acid phosphatase (ACP) using 3,3',5,5'-tetramethylbenzidine (TMB) as the chromogenic substrate, relying on the satisfactory oxidase activity from PDA-Pd/NCs. However, the addition of malathion could inhibit the activity of ACP and limit the production of medium AA. Therefore, we constructed a colorimetric assay for malathion based on PDA-Pd/NCs + TMB + ACP system. The wide linear range (0-8 μM) and low detection limit (0.023 μM) indicate excellent analytical performance, which is superior to most malathion analysis methods previously reported. This work not only provides a new idea for dopamine coated nano-enzyme to improve its catalytic activity, but also creates a new tactics for the detection of pesticides such as malathion.
Collapse
Affiliation(s)
- Ge Kang
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China
| | - Dan Zhao
- School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, Henan 471023, China.
| | - Hao Wang
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China
| | - Fangning Liu
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China
| | - Tingting Wang
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China
| | - Chuanxia Chen
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China.
| | - Yizhong Lu
- School of Materials Science and Engineering, University of Jinan, Jinan, Shandong, 250022, China.
| |
Collapse
|
3
|
Guo X, Liu J, Jiang L, Gong W, Wu H, He Q. Sulourea-coordinated Pd nanocubes for NIR-responsive photothermal/H 2S therapy of cancer. J Nanobiotechnology 2021; 19:321. [PMID: 34649589 PMCID: PMC8515682 DOI: 10.1186/s12951-021-01042-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/14/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Photothermal therapy (PTT) frequently cause thermal resistance in tumor cells by inducing the heat shock response, limiting its therapeutic effect. Hydrogen sulfide (H2S) with appropriate concentration can reverse the Warburg effect in cancer cells. The combination of PTT with H2S gas therapy is expected to achieve synergistic tumor treatment. METHODS Here, sulourea (Su) is developed as a thermosensitive/hydrolysable H2S donor to be loaded into Pd nanocubes through in-depth coordination for construction of the Pd-Su nanomedicine for the first time to achieve photo-controlled H2S release, realizing the effective combination of photothermal therapy and H2S gas therapy. RESULTS The Pd-Su nanomedicine shows a high Su loading capacity (85 mg g-1), a high near-infrared (NIR) photothermal conversion efficiency (69.4%), and NIR-controlled H2S release by the photothermal-triggered hydrolysis of Su. The combination of photothermal heating and H2S produces a strong synergetic effect by H2S-induced inhibition of heat shock response, thereby effectively inhibiting tumor growth. Moreover, high intratumoral accumulation of the Pd-Su nanomedicine after intravenous injection also enables photothermal/photoacoustic dual-mode imaging-guided tumor treatment. CONCLUSIONS The proposed NIR-responsive heat/H2S release strategy provides a new approach for effective cancer therapy.
Collapse
Affiliation(s)
- Xiaoyang Guo
- The Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, 200234, China
| | - Jia Liu
- Central Laboratory, Longgang District People's Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong, Shenzhen, 518172, Guangdong, China
| | - Lingdong Jiang
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, Guangdong, China
| | - Wanjun Gong
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, Guangdong, China
| | - Huixia Wu
- The Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry of Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai, 200234, China.
| | - Qianjun He
- Central Laboratory, Longgang District People's Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong, Shenzhen, 518172, Guangdong, China.
- Guangdong Provincial Key Laboratory of Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, 518060, Guangdong, China.
| |
Collapse
|
4
|
Li J, Li Y. One-pot high-yield synthesis of Pd nanocubes for Pd-Ir nanocube-based immunoassay of nucleocapsid protein from SARS-CoV-2. Anal Bioanal Chem 2021; 413:4635-44. [PMID: 33735408 DOI: 10.1007/s00216-021-03265-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/25/2021] [Accepted: 03/02/2021] [Indexed: 12/18/2022]
Abstract
Pd-Ir nanocubes are promising peroxidase-mimicking nanozymes for immunoassays, enabled by their excellent stability, relatively high catalytic activity, and reproducible performance. A key step involved in the preparation of Pd-Ir nanocubes is the synthesis of Pd nanocubes. However, the traditional method to synthesize Pd nanocubes requires sophisticated and expensive equipment to precisely control the reaction temperature and highly skilled technicians to achieve satisfactory and reproducible product yields. Herein, we report a simple, cost-effective, high-yield (> 99%) and one-pot strategy to synthesize Pd nanocubes with sizes of 7, 18, and 51 nm for the preparation of Pd-Ir nanocubes. The resulting 18 nm Pd-Ir nanocubes display three orders of magnitude higher peroxidase activity compared to horseradish peroxidase, leading to a significantly increased detection sensitivity when applied in the immunoassay of nucleocapsid protein from SARS-CoV-2. Due to the simplicity in both material synthesis and assaying procedures and the excellent detection sensitivity, our method should allow for the generalized application of Pd-Ir nanocube-based immunoassays for the diagnosis of human diseases.
Collapse
|
5
|
Wang W, Li X, He T, Liu Y, Jin M. Engineering Surface Structure of Pt Nanoshells on Pd Nanocubes to Preferentially Expose Active Surfaces for ORR by Manipulating the Growth Kinetics. Nano Lett 2019; 19:1743-1748. [PMID: 30721082 DOI: 10.1021/acs.nanolett.8b04735] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synthesis of Pt nanoshells on substrates can increase the utilization efficiency of Pt atoms and reduce the amount of Pt used in the applications. However, it is still an enormous challenge in tailoring the required crystal facets of Pt nanoshells on a given substrate. In this work, we demonstrate a facile and convenient approach capable for generating Pt octahedral islands with tunable sizes and densities on Pd nanocubes by manipulating the deposition rate. The key to this synthesis is the fine control over the deposition rate of Pt on Pd seeds. Because of the different reactivities at the surface sites, the deposition of Pt can be controlled at a certain site by carefully tuning the deposition rate. With a low concentration of reductant (8.33 mg/mL of glucose), surface diffusion dominates the process, and thus the Pt cubic shells form on Pd cubic seeds. In contrast, when a higher amount of the reductant (16.67 mg/mL of glucose) is added, the deposition starts to dominate the growth of Pt shells. In this case, the deposition would be controlled at the corners, forming eight large Pt octahedra on a cubic Pd seed. Further increasing the deposition rate can induce much higher deposition rates, in which case, the deposition of Pt would likely take place not only at the corners, but also the edge and surface sites of the seeds. Not surprisingly, this growth habit can result in the formation of high-density octahedral islands on Pd cubic seeds. With the same amount of precursor supply, the higher the densities of Pt islands, the smaller the size of the octahedral islands on Pd nanocubes. Unlike other synthetic methods, the size of the octahedral islands on Pd seeds can be even controlled to be smaller than 3 nm by controlling the amount of the Pt precursor. Considering the excellent performance of {111} facets of Pt catalysts toward ORR, the Pt nanocages with small octahedral islands on the surfaces can exhibit a high activity with a mass activity 0.68 A/mg, as high as 5.2 times of that of commercial Pt/C.
Collapse
Affiliation(s)
- Weicong Wang
- Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China
| | - Xiang Li
- Institute of Advanced Electrochemical Energy and School of Materials Science and Engineering , Xi'an University of Technology , Xi'an , Shaanxi 710048 , China
| | - Tianou He
- Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China
| | - Yaming Liu
- Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China
| | - Mingshang Jin
- Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering , Xi'an Jiaotong University , Xi'an , Shaanxi 710049 , China
| |
Collapse
|
6
|
Liu X, Li Z, Wang K, Zhou L, Zhao X, Jiang W, Li Q, Deng Y. Facile Synthesis of Pd Nanocubes with Assistant of Iodide and Investigation of Their Electrocatalytic Performances Towards Formic Acid Oxidation. Nanomaterials (Basel) 2019; 9:E375. [PMID: 30841612 DOI: 10.3390/nano9030375] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 01/24/2023]
Abstract
This article presents a facile, one-pot method using the aqueous phase for the synthesis of high-quality Pd nanocubes. In this study, Pd chloride was used as the precursor, sodium iodide as capping agent, and poly(vinylpyrrolidone) as surfactant and reducing agent. The effects of different halogens on the morphology of Pd nanocrystals were investigated. The results showed that, in this synthesis system, the selection and proper amount of sodium iodide was essential to the preparation of high-quality Pd nanocubes. When iodide was replaced by other halogens (such as bromide and chloride), Pd nanocrystals with cubic morphology could not be obtained. In addition, we have found that NaBH4 can be used to efficiently remove inorganic covers, such as iodide, from the surface of Pd nanoparticles as synthesized. The Pd nanoparticles obtained were employed as electro-catalysts for formic acid oxidation, and they exhibited excellent catalytic activity and good stability towards this reaction.
Collapse
|