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Gholamian F, Karimi N, Gholamian F, Bayat P. Phycoremediation potential and agar yield of red macroalgae (Gracilaria corticata) against HEDP (hydroxyethylidene diphosphonic acid) and CAPB (cocoamidopropyl betaine) detergents and the heavy metal pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:101110-101120. [PMID: 37648916 DOI: 10.1007/s11356-023-29427-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 08/17/2023] [Indexed: 09/01/2023]
Abstract
The discharge of raw industrial, agricultural, and domestic wastes leads to an increase in heavy metal (HM) burden and detergents in aquatic environs, which can have destructive effects on aquatic organisms. Agarophyte Gracilaria corticata, a major component of seaweed flora of the southern coast of Iran (Bushehr) that contains agar and red pigments, is one of the economically valuable red marine algae. Agar is one of the important polysaccharides with high economic value, widely used in pharmaceutical, medicinal, and cosmetic product manufacturing industries. The aim of this work was to investigate the effect of 5 HMs and two common surfactants in household and industrial detergents on the agar yield, appearance color, and the red algae's phycoremediation potential against HMs. The metal ions were Zn(II), Cu(II), Ni(II), Mn(II), and Cr(VI), and the surfactants were HEDP and CAPB. The analysis results of samples cultured for 60 days in seawater and polluted environments showed that G. corticata can accumulate copper and nickel. In the presence of detergents without HMs, the amount of extracted agar significantly increased compared to the control sample with no change in algae color. But with increasing concentration of HMs, the amount of agar in seaweed samples decreased significantly, and the algae discolored from red to dark green or yellowish-green color (signs of death in the algae). These results show that increasing of HM pollution and detergents can lead to toxicological effects and reduce the species diversity of red seaweeds in the future.
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Affiliation(s)
- Fatemeh Gholamian
- Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
| | - Naser Karimi
- Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran.
| | | | - Parviz Bayat
- Bushehr Agricultural and Natural Resources Research and Education Center, AREEO, Tehran, Iran
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Zeng G, Chen W, Liu S, Liu G. New insights into the aggregation and disaggregation between serpentine and pyrite in the xanthate flotation system. J Colloid Interface Sci 2023; 633:243-253. [PMID: 36459931 DOI: 10.1016/j.jcis.2022.11.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022]
Abstract
HYPOTHESIS In xanthate flotation system, the aggregation of serpentine on sulfide minerals significantly weakened their floatability. And it was generally assumed that the electrostatic attraction was of the dominant driver for coating of serpentine slimes. In this paper, the hydrophobic interaction between the "talc-like" cleavage plane of serpentine and the xanthate-hydrophobized surface of sulfide minerals was proposed as the dominated driver. EXPERIMENTS To evaluate the aggregation of serpentine on pyrite surface, a novel experimental protocol was designed, and the aggregation behavior and mechanism in the absence and presence of sodium isobutyl xanthate (SIBX) were explored through in situ optical microscope, micro-flotation, contact angle, zeta potential and FT-IR. Afterwards, the disaggregation mechanism of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) to the aggregates of serpentine on pyrite surface was revealed. FINDINGS The electrostatic attraction facilitated the slight aggregation of serpentine slimes on bare pyrite surface. The hydrophobic interaction between the "talc-like" plane of serpentine and SIBX-covered pyrite significantly promoted the aggregation between them, which remarkably weakened the floatability of pyrite. The attendance of HEDP anions reversed the surface potential of the octahedral Mg-O layers of serpentine from the positive into the negative, thus to prevent the aggregation of the HEDP-anchored serpentine with the SIBX-covered pyrite via the strong electrostatic repulsion between them. As a result, the disaggregation as well as SIBX flotation separation of pyrite from serpentine was realized. This investigation also provided new insights into the aggregation and disaggregation between serpentine and sulfide minerals during froth flotation.
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Affiliation(s)
- Guangsheng Zeng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Wei Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Sheng Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Guangyi Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
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Preparation and corrosion resistance of ZnO@ZIF-8-SA film on carbon steel surface. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhu D, Wang J, Hu W. Hydroxyapatite film prepared by hydrothermal method on layered double hydroxides coated Mg Alloy and its corrosion resistance. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Deng J, Li Y, Xiao Y, Feng K, Lu C, Nie K, Lv X, Xu H, Zhong J. Improved Water Oxidation of Fe 2O 3/Fe 2TiO 5 Photoanode by Functionalizing with a Hydrophilic Organic Hole Storage Overlayer. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiujun Deng
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Yaxi Li
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Ying Xiao
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Kun Feng
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Cheng Lu
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxin Lv
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Hui Xu
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
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Li RT, Zhu YD, Li WY, Hou YK, Zou YM, Zhao YH, Zou Q, Zhang WH, Chen JX. Synergistic photothermal-photodynamic-chemotherapy toward breast cancer based on a liposome-coated core-shell AuNS@NMOFs nanocomposite encapsulated with gambogic acid. J Nanobiotechnology 2022; 20:212. [PMID: 35524270 PMCID: PMC9074336 DOI: 10.1186/s12951-022-01427-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 04/19/2022] [Indexed: 01/12/2023] Open
Abstract
A multifunctional nanoplatform with core–shell structure was constructed in one-pot for the synergistic photothermal, photodynamic, and chemotherapy against breast cancer. In the presence of gambogic acid (GA) as the heat-shock protein 90 (HSP90) inhibitor and the gold nanostars (AuNS) as the photothermal reagent, the assembly of Zr4+ with tetrakis (4-carboxyphenyl) porphyrin (TCPP) gave rise to the nanocomposite AuNS@ZrTCPP-GA (AZG), which in turn, further coated with PEGylated liposome (LP) to enhance the stability and biocompatibility, and consequently the antitumor effect of the particle. Upon cellular uptake, the nanoscale metal − organic framework (NMOF) of ZrTCPP in the resulted AuNS@ZrTCPP-GA@LP (AZGL) could be slowly degraded in the weak acidic tumor microenvironment to release AuNS, Zr4+, TCPP, and GA to exert the synergistic treatment of tumors via the combination of AuNS-mediated mild photothermal therapy (PTT) and TCPP-mediated photodynamic therapy (PDT). The introduction of GA serves to reduce the thermal resistance of the cell to re-sensitize PTT and the constructed nanoplatform demonstrated remarkable anti-tumor activity in vitro and in vivo. Our work highlights a facile strategy to prepare a pH-dissociable nanoplatform for the effective synergistic treatment of breast cancer.
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Affiliation(s)
- Rong-Tian Li
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Yi-Dan Zhu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Wen-Ya Li
- Department of Medical Imaging, Third Affiliated Hospital of Southern Medical University (Academy of Orthopedics Guangdong Province), Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Ying-Ke Hou
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China.,Department of Medical Imaging, Third Affiliated Hospital of Southern Medical University (Academy of Orthopedics Guangdong Province), Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Yi-Ming Zou
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Ying-Hua Zhao
- Department of Medical Imaging, Third Affiliated Hospital of Southern Medical University (Academy of Orthopedics Guangdong Province), Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Quan Zou
- Department of Medical Imaging, Third Affiliated Hospital of Southern Medical University (Academy of Orthopedics Guangdong Province), Southern Medical University, Guangzhou, 510630, People's Republic of China
| | - Wen-Hua Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Jin-Xiang Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China.
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Li M, Xie K, Peng R, Yuan B, Wang Q, Wang C. Surface Protection and Interface Regulation for Zn Anode via 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Electrolyte Additive toward High-Performance Aqueous Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107398. [PMID: 35083869 DOI: 10.1002/smll.202107398] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Indexed: 06/14/2023]
Abstract
Metallic zinc is regarded as an ideal anode material for high-energy aqueous zinc ion batteries owing to its high theoretical capacity, low cost, and abundant resource. However, the undesirable dendrite formation and side reactions occurring on Zn anode during the long-term cycling process seriously restrict the electrochemical performance of the device. Herein, 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) is used as electrolyte additive to release the chemical corrosion and hydrogen evolution occurring on Zn anode based on the absorption of HEDP on the Zn foil. Moreover, the strong coordination of HEDP with Zn2+ can balance ion flux at the electrode/electrolyte interface, thus inducing uniform Zn deposition. Thereby, Zn anode exhibits a prolonged cycle life of reversible Zn plating/stripping under different current densities (2800 h at 2 mA cm-2 , 1 mAh cm-2 , and more than 1772 h at 4 mA cm-2 , 1 mAh cm-2 ). Moreover, the cell shows a high average coulombic efficiency of ≈99.6% for ≈600 cycles at 1 mA cm-2 with a cycling capacity of 1 mAh cm-2 . This work provides a facile yet effective method for developing reversible aqueous zinc metal batteries.
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Affiliation(s)
- Min Li
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Kaixuan Xie
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Ruiying Peng
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Boyu Yuan
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Qinghong Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Chao Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
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Thin Protective Coatings on Metals Formed by Organic Corrosion Inhibitors in Neutral Media. COATINGS 2022. [DOI: 10.3390/coatings12020149] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protection of metals in neutral media with pH 5.0–9.0 (in humid atmospheres and various aqueous solutions) can be achieved by formation of thin coatings (up to several tens of nm) on their surfaces due to adsorption and more complex chemical interactions of organic corrosion inhibitors (OCIs) with the metal to be protected. The review contains three sections. The first section deals with coatings formed in aqueous solutions, while the second one, with those formed in organic and water-organic solvents. Here we consider metal protection by coatings mainly formed by the best-known classes of OCI (carboxylates, organophosphates and phosphonates) and estimation of its efficiency. The third section discusses the peculiarities of protection of metals in the vapor-gas phase, i.e., by volatile OCIs, and a relatively new type of metal protection against atmospheric corrosion by the so-called chamber inhibitors. OCIs with relatively low volatility under normal conditions can be used as chamber OCIs. To obtain a protective coating on the surfaces of metal items, they are placed in a chamber inside which an increased concentration of vapors of a chamber OCI is maintained by increasing the temperature. This review mainly focuses on the protection of iron, steels, copper and zinc.
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Dong F, Luo Z, Wang B. Preparation of Mn 2+ Doped Piperazine Phosphate as a Char-Forming Agent for Improving the Fire Safety of Polypropylene/Ammonium Polyphosphate Composites. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7589. [PMID: 34947182 PMCID: PMC8707045 DOI: 10.3390/ma14247589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 12/14/2022]
Abstract
A piperazine phosphate doped with Mn2+ (HP-Mn), as a new char-forming agent for intumescent flame retardant systems (IFR), was designed and synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid, piperazine, and manganese acetate tetrahydrate as raw materials. The effect of HP-Mn and ammonium polyphosphate (APP) on the fire safety and thermal stability of polypropylene (PP) was investigated. The results showed that the combined incorporation of 25 wt.% APP/HP-Mn at a ratio of 1:1 endowed the flame retardant PP (PP6) composite with the limiting oxygen index (LOI) of 30.7% and UL-94 V-0 rating. In comparison with the pure PP, the peak heat release rate (PHRR), the total heat release (THR), and the smoke production rate (PSPR) of the PP6 were reduced by 74%, 30%, and 70%, respectively. SEM and Raman analysis of the char residues demonstrated that the Mn2+ displayed a catalytic cross-linking charring ability to form a continuous and compact carbon layer with a high degree of graphitization, which can effectively improve the flame retardancy of PP/APP composites. A possible flame-retardant mechanism was proposed to reveal the synergistic effect between APP and HP-Mn.
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Affiliation(s)
| | | | - Biaobing Wang
- Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; (F.D.); (Z.L.)
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