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Gao J, Qiu C, Qu W, Zhuang Y, Wang P, Yan Y, Wu Y, Zeng Z, Huang G, Deng R, Yan G, Yan J, Zhang R. Detection of Cd 2+ based on Nano-Fe 3O 4/MoS 2/Nafion/GCE sensor. ANAL SCI 2023; 39:1445-1454. [PMID: 37273140 PMCID: PMC10460708 DOI: 10.1007/s44211-023-00359-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/01/2023] [Indexed: 06/06/2023]
Abstract
It is necessary to detect cadmium ions in seawater with high sensitivity because the pollution of cadmium ions seriously endangers the health and life of human beings. Nano-Fe3O4/MoS2/Nafion modified glassy carbon electrode was prepared by a drop coating method. The electrocatalytic properties of Nano-Fe3O4/MoS2/Nafion were measured by Cyclic Voltammetry (CV). Differential Pulse Voltammetry (DPV) was used to study the stripping Voltammetry response of the modified electrode to Cd2+. The optimal conditions were determined: In 0.1 mol/L HAc-NaAc solution, the solution pH was 4.2, the deposition potential was - 1.0 V, and the deposition time was 720 s, the membrane thickness was 8 μL. Under the optimum condition, the linear relation of Cd2+ concentration was found in the range of 5-300 μg/L, and the detection limit was 0.053 μg/L. The recovery of Cd2+ in seawater ranged from 99.2 to 102.9%. A composite material with simple operation, rapid response and high sensitivity was constructed for the determination of Cd2+ in seawater.
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Affiliation(s)
- Jiaqi Gao
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Chengjun Qiu
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China.
- Guangxi Key Laboratory of Ocean Engineering Equipment and Technology, Qinzhou, China.
| | - Wei Qu
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Yuan Zhuang
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Ping Wang
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Yirou Yan
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Yuxuan Wu
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Zexi Zeng
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Gao Huang
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Ruonan Deng
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Guohui Yan
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Jiaqi Yan
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
| | - Ruoyu Zhang
- College of Mechanical, Naval Architecture and Ocean Engineering, Beibu Gulf University, Qinzhou, Guangxi, China
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How does the Internet of Things (IoT) help in microalgae biorefinery? Biotechnol Adv 2021; 54:107819. [PMID: 34454007 DOI: 10.1016/j.biotechadv.2021.107819] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 07/27/2021] [Accepted: 08/22/2021] [Indexed: 12/14/2022]
Abstract
Microalgae biorefinery is a platform for the conversion of microalgal biomass into a variety of value-added products, such as biofuels, bio-based chemicals, biomaterials, and bioactive substances. Commercialization and industrialization of microalgae biorefinery heavily rely on the capability and efficiency of large-scale cultivation of microalgae. Thus, there is an urgent need for novel technologies that can be used to monitor, automatically control, and precisely predict microalgae production. In light of this, innovative applications of the Internet of things (IoT) technologies in microalgae biorefinery have attracted tremendous research efforts. IoT has potential applications in a microalgae biorefinery for the automatic control of microalgae cultivation, monitoring and manipulation of microalgal cultivation parameters, optimization of microalgae productivity, identification of toxic algae species, screening of target microalgae species, classification of microalgae species, and viability detection of microalgal cells. In this critical review, cutting-edge IoT technologies that could be adopted to microalgae biorefinery in the upstream and downstream processing are described comprehensively. The current advances of the integration of IoT with microalgae biorefinery are presented. What this review discussed includes automation, sensors, lab-on-chip, and machine learning, which are the main constituent elements and advanced technologies of IoT. Specifically, future research directions are discussed with special emphasis on the development of sensors, the application of microfluidic technology, robotized microalgae, high-throughput platforms, deep learning, and other innovative techniques. This review could contribute greatly to the novelty and relevance in the field of IoT-based microalgae biorefinery to develop smarter, safer, cleaner, greener, and economically efficient techniques for exhaustive energy recovery during the biorefinery process.
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