Dr. Yansha Gao

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6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 October 2021 in Analytical and Bioanalytical Chemistry

Journal Article

2D leaf-like ZIF-L decorated with multi-walled carbon nanotubes as electrochemical sensing platform for sensitively detecting thiabendazole pesticide residues in fruit samples

Feng Gao

Zhihong Yan

Ying Cai

Jing Yang

Wei Zhong

Limin Lu

12 July 2023 in Molecules

Journal Article

An Electrochemical Sensor Based on a Porous Biochar/Cuprous Oxide (BC/Cu₂O) Composite for the Determination of Hg(II)

Mercuric ion (Hg²⁺) in aqueous media is extremely toxic to the environment and organisms. Therefore, the ultra-trace electrochemical determination of Hg²⁺ in the environment is of critical importance. In this work, a new electrochemical Hg²⁺ sensing platform based on porous activated carbon (BC/Cu₂O) modified with cuprous oxide was developed using a simple impregnation pyrolysis method. Differential pulse anodic stripping voltammetry (DPASV) was used to investigate the sensing capability of the BC/Cu₂O electrode towards Hg²⁺. Due to the excellent conductivity and large specific surface area of BC, and the excellent catalytic activity of Cu₂O nanoparticles, the prepared BC/Cu₂O electrode exhibited excellent electrochemical activity. The high sensitivity of the proposed system resulted in a low detection limit of 0.3 ng·L⁻¹ and a wide linear response in the ranges from 1.0 ng·L⁻¹ to 1.0 mg·L⁻¹. In addition, this sensor was found to have good accuracy, acceptable precision, and reproducibility. All of these results show that the BC/Cu₂O composite is a promising material for Hg²⁺ electrochemical detection.

13 October 2022 in Molecules

Journal Article

2D Leaf-Like Structured ZIF-L Embedded Electrochemically Reduced Graphene Oxide Composite as an Electrochemical Sensing Platform for Sensitively Detecting Benomyl

In this work, a two-dimensional leaf-like framework-L embedded electrochemically reduced graphene oxide (ERGO@ZIF-L) was proposed as an outstanding electrode material for the sensitive electrochemical sensing of benomyl (BM). ZIF-L is surrounded by ERGO, which could effectively ensure the stability and dispersion of ZIF-L. With this unique combination, the prepared ERGO@ZIF-L displayed excellent synergistic characteristics with a large surface area, excellent conductivity, plentiful active sites, and high electrocatalytic properties, thus endowing it with high sensitivity for BM determination. The experimental parameters, such as solution pH, material volume, and accumulation time, were optimized. Under optimal conditions, the BM sensor showed a wide linear range (0.009–10.0 μM) and low-limit detection (3.0 nM). Moreover, the sensor displayed excellent stability, repeatability, and reproducibility, and good anti-interference capability. The method was successfully applied to detect BM in real-world samples.

10 October 2023 in Molecules

Journal Article

Efficient Adsorption and Electrochemical Detection of Cd²⁺ 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 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 Cd²⁺ 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 Cd²⁺ in wastewater. Meanwhile, the MgZnFe-LDHs/PBC-based electrochemical sensor shows excellent detection performance for Cd²⁺, 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 Cd²⁺ from wastewater.

6 April 2023 in Molecules

Journal Article

TiO₂-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein

In this work, TiO₂-MXene/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite was utilized as an electrode material for the sensitive electrochemical detection of baicalein. The in-situ growth of TiO₂ nanoparticles on the surface of MXene nanosheets can effectively prevent their aggregation, thus presenting a significantly large specific surface area and abundant active sites. However, the partial oxidation of MXene after calcination could reduce its conductivity. To address this issue, herein, PEDOT:PSS films were introduced to disperse the TiO₂-MXene materials. The uniform and dense films of PEDOT:PSS not only improved the conductivity and dispersion of TiO₂-MXene but also enhanced its stability and electrocatalytic activity. With the advantages of a composite material, TiO₂-MXene/PEDOT:PSS as an electrode material demonstrated excellent electrochemical sensing ability for baicalein determination, with a wide linear response ranging from 0.007 to 10.0 μM and a lower limit of detection of 2.33 nM. Furthermore, the prepared sensor displayed good repeatability, reproducibility, stability and selectivity, and presented satisfactory results for the determination of baicalein in human urine sample analysis.

15 July 2022 in Molecules

Journal Article

Facile Synthesis of Nitrogen Self-Doped Porous Carbon Derived from Cicada Shell via KOH Activation for Simultaneous Detection and Removal of Cu²⁺

Sensitive detection and efficient removal of heavy metal ions with high toxicity and mobility are of great importance for environmental monitoring and control. Although several kinds of functional materials have been reported for this purpose, their preparation processes are complicated. Herein, nitrogen self-doped activated porous biochar (NAC) was synthesized in a facile process via an activation–carbonization strategy from cicada shell rich in chitin, and subsequently employed as an effective functional material for the simultaneous determination and removal of Cu²⁺ from aqueous media. With its unique porous structure and abundant oxygen-containing functional groups, along with the presence of heteroatoms, NAC exhibits high sensitivity for the electrochemical sensing of Cu²⁺ in concentrations ranging from 0.001 to 1000 μg·L⁻¹, with a low detection limit of 0.3 ng·L⁻¹. Additionally, NAC presents an excellent removal efficiency of over 78%. The maximum adsorption capacity is estimated at 110.4 mg/g. These excellent performances demonstrate that NAC could serve as an efficient platform for the detection and removal of Cu²⁺ in real environmental areas.

About Me

Name （姓名）: Yansha Gao (高艳莎) Affiliation (机构)：Key Laboratory of Crop Physiology, Ecology, and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and materials, Jiangxi Agricultural University Detailed address (详细地址)：College of Chemistry and Materials, Jiangxi Agricultural University, Zhimin Avenue No. 1101, Nanchang 330045, China Email (邮箱)：gaoyansha@jxau.edu.cn Published papers (发文经历): [1]Yansha Gao, Songbai Zhang, Chengwei Wu, Qian Li, Zhifa Shen, Yi Lu*, Zai-Sheng Wu*. Self-protected DNAzyme walker with a circular bulging DNA shield for amplified imaging of miRNAs in living cells and mice. ACS Nano, 2021, 15: 19211-19224. [2]Wei Zhong , Feng Gao , Jin Zou , Shuwu Liu , Mingfang Li , Yansha Gao *, Xiaoqiang Wang , Limin Lu * MXene@ Ag-based ratiometric electrochemical sensing strategy for effective detection of carbendazim in vegetable samples. Food Chemistry, 2021, 360, 130006. [3]Feng Gao , Jing Yang , Xiaolong Tu , Yongfang Yu , Shuwu Liu*, Mingfang Li , Yansha Gao , Xiaoqiang Wang , Limin Lu *. Facile synthesis of ZIF-8@ poly (3, 4-ethylenedioxythiophene): poly (4-styrenesulfonate) and its application as efficient electrochemical sensor for the determination dichlorophenol. Synthetic Metals, 2021, 277, 116769.

Dr. Yansha Gao

Dr. Yansha Gao

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