1
|
A simple polyol one-shot synthesis of Maghemite and Hematite from inexpensive precursors. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
|
2
|
Zhuang Z, Zhang L, Huang C, Wang X, Guo H, Thomas T, Qu F, Wang P, Yang M. A dimethyl disulfide gas sensor based on nanosized Pt-loaded tetrakaidecahedral α-Fe 2O 3nanocrystals. NANOTECHNOLOGY 2022; 33:405502. [PMID: 35334476 DOI: 10.1088/1361-6528/ac614c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Surface modification by employing precious metals is one of the most effective ways to improve the gas-sensing performance of metal oxide semiconductors. Pureα-Fe2O3nanoparticles and Pt-modifiedα-Fe2O3nanoparticles were prepared sequentially using a rather simple hydrothermal synthesis and impregnation method. Compared with the originalα-Fe2O3nanomaterials, the Pt-α-Fe2O3nanocomposite sensor shows a higher response value (Ra/Rg = 58.6) and a shorter response/recovery time (1 s/168 s) to 100 ppm dimethyl disulfide (DMDS) gas at 375 °C. In addition, it has better selectivity to DMDS gas with the value of more than 9 times higher than the other target gases at 375 °C. This study indicates that the Pt-α-Fe2O3nanoparticle sensor has good prospects and can be used as a low-cost and effective DMDS gas sensor.
Collapse
Affiliation(s)
- Ziqin Zhuang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Li Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Chaozhu Huang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Xiaohang Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Haichuan Guo
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Adyar, Chennai-600036, Tamil Nadu, India
| | - Fengdong Qu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Pei Wang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| |
Collapse
|
3
|
Liu R, Lv Z, Liu X, Huang W, Pan S, Yin R, Yu L, Li Y, Zhang Y, Zhang S, Lu R, Li Y, Li S. Improved delivery system for celastrol-loaded magnetic Fe 3O 4/α-Fe 2O 3 heterogeneous nanorods: HIF-1α-related apoptotic effects on SMMC-7721 cell. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 125:112103. [PMID: 33965112 DOI: 10.1016/j.msec.2021.112103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 03/21/2021] [Accepted: 03/31/2021] [Indexed: 02/06/2023]
Abstract
Fe3O4/α-Fe2O3 heterogeneous nanorods were prepared by a rapid combustion method with α-FeOOH nanorods as precursors. Fe3O4/α-Fe2O3 heterogeneous nanorods with a saturation magnetization of 33.2 emu·g-1 were obtained using 30 mL of absolute ethanol at a calcination temperature of 300 °C. Their average length was around 140 nm, and average diameter was about 20 nm. To improve the dispersion characteristics of the Fe3O4/α-Fe2O3 heterogeneous nanorods in aqueous solution, citric acid and PEG were applied to modify the nanorod surface via the Mitsunobu reaction. The results showed that the hydrodynamic size range of Fe3O4/α-Fe2O3/CA-PEG-celastrol was 250-500 nm, the surface potential was -15 mV, and the saturation magnetization was approximately 23 emu·g-1. The drug loading capacity of Fe3O4/α-Fe2O3/CA-PEG was larger than the non-PEG modified version. Fe3O4/α-Fe2O3/CA-PEG-celastrol had slow-release characteristics and was sensitive to changes in pH. Application of a magnetic field significantly promoted the inhibition of SMMC-7721 human liver cancer cell growth after treatment with Fe3O4/α-Fe2O3/CA-PEG-celastrol. Celastrol and Fe3O4/α-Fe2O3/CA-PEG-celastrol increased the production of reactive oxygen species in SMMC-7721 cells and promoted apoptosis and apoptosis-related proteins (p53, Bax, Bcl-2) were also changed. In addition, the expression of hypoxia-inducible factor 1α (HIF-1α) was enhanced. We may conclude that celastrol-loaded magnetic Fe3O4/α-Fe2O3 heterogeneous nanorods may be applied in the chemotherapy of human cancer with good biocompatibility and delivery.
Collapse
Affiliation(s)
- Ruijiang Liu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Zhixiang Lv
- The People's Hospital of Danyang, Zhenjiang 212300, PR China
| | - Xiao Liu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Wei Huang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Shuai Pan
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Ruitong Yin
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Lulu Yu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - You Li
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Yanling Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Shaoshuai Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, PR China
| | - Rongzhu Lu
- School of Medicine, Jiangsu University, Zhenjiang 212013, PR China
| | - Yongjin Li
- School of Medicine, Jiangsu University, Zhenjiang 212013, PR China.
| | - Shasha Li
- Affiliated Kunshan Hospital, Jiangsu University, Suzhou 215300, PR China.
| |
Collapse
|
4
|
Wei J, Hu Q, Gao Y, Hao N, Qian J, Wang K. A Multiplexed Self-Powered Dual-Photoelectrode Biosensor for Detecting Dual Analytes Based on an Electron-Transfer-Regulated Conversion Strategy. Anal Chem 2021; 93:6214-6222. [PMID: 33829776 DOI: 10.1021/acs.analchem.1c00503] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Due to the inherent mechanism limitation of photocatalytic fuel cell based self-powered biosensors (PFC-SPBs), it was difficult to distinguish the power density of various photoactive materials or recognition events in one detection process, which made it lack multitarget quantitative capacity. In order to solve this problem, we proposed an electron-transfer-regulated conversion strategy for the construction of multiplexed PFC-SPBs. Herein, the n-type CdS/Fe2O3 nanorod array (NR) heterojunction and p-type CuBr semiconductor were used as photoactive materials to prepare the photoanode and photocathode. Based on the appropriate Fermi level differentiation between these two photoelectrodes, a self-powered sensing platform driven by visible light without external energy supply was achieved. In this design, two kinds of common and easily coexisting mycotoxins OTA and AFB1 acted as model analytes. The coupling of "signal off" and "signal on" was realized by controlling the electronic transmission on the interface between the photoanode and photocathode, so as to achieve the simultaneous detection of two mycotoxins. This work established a proof-of-concept for the integration of a dual-photoelectrode with dual-assay that could provide the innovative inspiration for the formation of a general multiplexed self-powered sensing platform.
Collapse
Affiliation(s)
- Jie Wei
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qinqin Hu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yun Gao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Jing Qian
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| |
Collapse
|
5
|
Fabrication of carbon quantum dots/TiO2/Fe2O3 composites and enhancement of photocatalytic activity under visible light. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.06.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
6
|
Qin R, Hao L, Li J, Zhu Y, Qi Z. Ultrasonic-Assisted Hydrolysis Precipitation Rapid Synthesis of Rod-Like α-Fe2
O3
Nanostructures and Its Interfacial Electron Transfer Properties. CRYSTAL RESEARCH AND TECHNOLOGY 2018. [DOI: 10.1002/crat.201800165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Runhua Qin
- School of Materials Engineering; Jinling Institute of Technology; Nanjing 211169 China
- Nanjing Key Laboratory of Optometric Materials and Technology; Nanjing 211169 China
| | - Lingyun Hao
- School of Materials Engineering; Jinling Institute of Technology; Nanjing 211169 China
- Nanjing Key Laboratory of Optometric Materials and Technology; Nanjing 211169 China
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology; Nanjing 211167 China
| | - Juan Li
- School of Materials Engineering; Jinling Institute of Technology; Nanjing 211169 China
| | - Yuting Zhu
- School of Materials Engineering; Jinling Institute of Technology; Nanjing 211169 China
| | - Zhaoyin Qi
- School of Materials Engineering; Jinling Institute of Technology; Nanjing 211169 China
| |
Collapse
|
7
|
A facile coating method to construct uniform porous α-Fe2O3@TiO2 core-shell nanostructures with enhanced solar light photocatalytic activity. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.01.067] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
8
|
A novel application of α- and β-sodium ferrite as a CO2-capturing solid in air with water vapor. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2017.11.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
9
|
Wu X, Chen W, Key J, Wu W. One-pot solvothermal synthesis of fern leaf-like α-Fe2O3@C/graphene from ferrocene with enhanced lithium and sodium storage properties. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.10.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
10
|
Bazrafshan H, Shajareh Touba R, Alipour Tesieh Z, Dabirnia S, Nasernejad B. Hydrothermal synthesis of Co3O4 nanosheets and its application in photoelectrochemical water splitting. CHEM ENG COMMUN 2017. [DOI: 10.1080/00986445.2017.1344651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hamed Bazrafshan
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Razieh Shajareh Touba
- Department of Chemistry, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Zahra Alipour Tesieh
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Saeideh Dabirnia
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Bahram Nasernejad
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| |
Collapse
|