Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite
Their unique layered structure, large specific surface area, good stability, high negative charge density between layers, and customizable composition give layered double hydroxides (LDHs) excellent adsorption and detection performance for heavy metal ions (HMIs). However, their easy aggregation and...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/28/20/7002 |
| _version_ | 1827720306585763840 |
|---|---|
| author | Yongfang Yu Wenting Yang Shujuan Li Yansha Gao Linyu Wang Guoqin Huang |
| author_facet | Yongfang Yu Wenting Yang Shujuan Li Yansha Gao Linyu Wang Guoqin Huang |
| author_sort | Yongfang Yu |
| collection | DOAJ |
| description | Their unique layered structure, large specific surface area, good stability, high negative charge density between layers, and customizable composition give layered double hydroxides (LDHs) excellent adsorption and detection performance for heavy metal ions (HMIs). However, their easy aggregation and low electrical conductivity limit the practical application of untreated LDHs. In this work, a ternary MgZnFe-LDHs engineered porous biochar (MgZnFe-LDHs/PBC) heterojunction was proposed as a sensing and adsorption material for the effective detection and removal of Cd<sup>2+</sup> from wastewater. The growth of MgZnFe-LDHs in the PBC pores not only reduces the accumulation of MgZnFe-LDHs, but also improves the electrical conductivity of the composite. The synergistic effect between MgZnFe-LDHs and PBC enables the composite to achieve a maximum adsorption capacity of up to 293.4 mg/g for Cd<sup>2+</sup> in wastewater. Meanwhile, the MgZnFe-LDHs/PBC-based electrochemical sensor shows excellent detection performance for Cd<sup>2+</sup>, presenting a wide linear range (0.01 ng/L–1 mg/L), low detection limit (3.0 pg/L), good selectivity, and stability. The results indicate that MgZnFe-LDHs/PBC would be a potential material for detecting and removing Cd<sup>2+</sup> from wastewater. |
| first_indexed | 2024-03-10T21:01:28Z |
| format | Article |
| id | doaj.art-44fd9adb02114f1ebaad732c1069c84c |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T21:01:28Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-44fd9adb02114f1ebaad732c1069c84c2023-11-19T17:31:17ZengMDPI AGMolecules1420-30492023-10-012820700210.3390/molecules28207002Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar CompositeYongfang Yu0Wenting Yang1Shujuan Li2Yansha Gao3Linyu Wang4Guoqin Huang5Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, School of Agriculture, Jiangxi Agricultural University, Nanchang 330045, ChinaTheir unique layered structure, large specific surface area, good stability, high negative charge density between layers, and customizable composition give layered double hydroxides (LDHs) excellent adsorption and detection performance for heavy metal ions (HMIs). However, their easy aggregation and low electrical conductivity limit the practical application of untreated LDHs. In this work, a ternary MgZnFe-LDHs engineered porous biochar (MgZnFe-LDHs/PBC) heterojunction was proposed as a sensing and adsorption material for the effective detection and removal of Cd<sup>2+</sup> from wastewater. The growth of MgZnFe-LDHs in the PBC pores not only reduces the accumulation of MgZnFe-LDHs, but also improves the electrical conductivity of the composite. The synergistic effect between MgZnFe-LDHs and PBC enables the composite to achieve a maximum adsorption capacity of up to 293.4 mg/g for Cd<sup>2+</sup> in wastewater. Meanwhile, the MgZnFe-LDHs/PBC-based electrochemical sensor shows excellent detection performance for Cd<sup>2+</sup>, presenting a wide linear range (0.01 ng/L–1 mg/L), low detection limit (3.0 pg/L), good selectivity, and stability. The results indicate that MgZnFe-LDHs/PBC would be a potential material for detecting and removing Cd<sup>2+</sup> from wastewater.https://www.mdpi.com/1420-3049/28/20/7002adsorptionelectrochemical detectionMgZnFe-layered double hydroxidesporous biochar composite |
| spellingShingle | Yongfang Yu Wenting Yang Shujuan Li Yansha Gao Linyu Wang Guoqin Huang Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite Molecules adsorption electrochemical detection MgZnFe-layered double hydroxides porous biochar composite |
| title | Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite |
| title_full | Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite |
| title_fullStr | Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite |
| title_full_unstemmed | Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite |
| title_short | Efficient Adsorption and Electrochemical Detection of Cd<sup>2+</sup> with a Ternary MgZnFe-Layered Double Hydroxides Engineered Porous Biochar Composite |
| title_sort | efficient adsorption and electrochemical detection of cd sup 2 sup with a ternary mgznfe layered double hydroxides engineered porous biochar composite |
| topic | adsorption electrochemical detection MgZnFe-layered double hydroxides porous biochar composite |
| url | https://www.mdpi.com/1420-3049/28/20/7002 |
| work_keys_str_mv | AT yongfangyu efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite AT wentingyang efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite AT shujuanli efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite AT yanshagao efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite AT linyuwang efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite AT guoqinhuang efficientadsorptionandelectrochemicaldetectionofcdsup2supwithaternarymgznfelayereddoublehydroxidesengineeredporousbiocharcomposite |