COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Wenbo Fu,Lu Sun,Xiaoming Zhang,Hualong Xu,Meiwen Cao
The effects of sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (SDBS) on the corrosion inhibition of xanthan gum (XG) on Q235 carbon steel were investigated. The corrosion inhibition performance was characterized by weight loss, kinetic potential polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and ultraviolet-visible spectroscopy (UV–vis) measurements. XG significantly reduced the corrosion rate of Q235 steel in HCl solution, and the corrosion rate decreased with increasing XG concentration. XG acted as a mixed inhibitor to inhibit corrosion by forming a protective adsorption layer on the metal surface. At a fixed SDS concentration, the XG/SDS mixture showed enhanced corrosion inhibition with increasing XG concentration, indicating that SDS had a synergistic effect on the corrosion inhibition of XG. In contrary, SDBS showed different behaviors in affecting the corrosion inhibition of XG. SDBS showed a synergistic effect on the corrosion inhibition at low XG concentrations, whilst further increasing XG concentration would not lead to a decreased anticorrosion performance. Structural variation in the adsorbed film formed by the XG/surfactant mixture on the metal surface is responsible for the anticorrosion performance. The study probes into the synergistic effects of surfactant on the ability of xanthan gum for metal corrosion inhibition, which is helpful for the development of more efficient and sustainable polymer/surfactant mixed corrosion inhibitors.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 32
·78229-78242
·
IF 5.8
Chen Jiuyan,Zhang Qiang,Zhu Yuwei,Zhang Mengli,Zhu Yutong,Farooq Usman,Lu Taotao,Qi Zhichong,Chen Weifeng
To date, little information is available regarding the impacts of the widespread anionic surfactants on the adsorption behaviors of antibiotics onto typical iron oxides. Herein, we have investigated the effects of two typical surfactants (sodium dodecyl sulfate (SDS) and sodium dodecylbenzene sulfonate (SDBS)) on the adsorption of two widely used antibiotics (i.e., levofloxacin (LEV) and ciprofloxacin (CIP)) onto ferrihydrite. Results of kinetic experiments showed that the adsorption of antibiotics was well fitted by the pseudo-second-order kinetic models, indicating that the adsorption process might be controlled by chemisorption. The affinity of ferrihydrite toward CIP was greater than that toward LEV, which was ascribed to the higher hydrophobicity of CIP than LEV. Both surfactants enhanced antibiotic adsorption owing to SDS or SDBS molecules as bridge agents between ferrihydrite particles and antibiotics. Interestingly, the extent of the enhanced effects of surfactants on antibiotic adsorption declined as the background solution pH increased from 5.0 to 9.0, which was mainly due to the weaker hydrophobic interactions between antibiotics and the adsorbed surfactants on the iron oxide surfaces as well as the greater electrostatic repulsion between the anionic species of antibiotics and the negatively charged ferrihydrite particles at higher pH. Together, these findings emphasize the importance of widespread surfactants for illustrating the interactions between fluoroquinolone antibiotics and iron oxide minerals in the natural environment.
研究领域:
环境科学
·
土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Chun-Ping Li,Wen-Yue Zhang,Li-Xin Gao,Da-Quan Zhang
Surfactants attract attentions in aluminum-air batteries (AABs) due to its profound effects for anti-corrosion. This research proposes a patching reinforcement strategy using surfactants of dodecyl-β-D-maltoside (βD) and dodecyldimethyl benzyl ammonium bromide (DDBAB) to enhance the action of 8-hydroxyquinoline (8-HQ) as electrolyte additive . Hybrid surfactants consolidate the complexation of 8-HQ with aluminum , forming a dense protective film on the electrode surface . The results show that the assembled AABs has the highest capacity density of 2517 mAh·g −1 under optimizing condition, and the anode utilization rate reaches 84.5%. The corrosion protection efficiency can reach 87.2% on Al-5052 electrode in 4 M NaOH solution. This strategy provides a new method for using hybrid additives for AABs and aims to promote their commercial application.
研究领域:
电化学
·
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2016
·
IF 4.179
Peizhu Zheng,Handi Yin,Jihua Zhao,Weiguo Shen
In order to clarify the nature of the inter-micellar interactions, we developed an approach to obtain the intermicellar interaction enthalpy through measuring the mixing heats of dodecyltrimethylammonium bromide (DTAB)/1-dodecyl-3-methylimidazolium bromide (C 12 mimBr) mixed micelles by using flow-mixing calorimetry . It was found that the inter-micellar interaction enthalpies for this system were negative, representing the attractive enthalpy interactions between the mixed micelle droplets. These results are contradictory to those reported in the literature and interpreted by the predominant attractive dehydration effect of counterion. Static light scattering experiment revealed that the repulsive nature of the interaction characterized by the Gibss free energy should be dominated by the entropy interaction.
研究领域:
物理化学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2024
·Vol. 19
·期 4
·e3074
·
IF 1.4
Fangqin Lu,Lingyun Liu,Chuilei Kong,Hongyu Zhao
Addressing the issue of processing fine kaolinite and quartz particles in coal slime, this study utilized molecular simulation and Density Functional Theory (DFT) to investigate the chelate adsorption characteristics of sodium dodecyl sulfate (SDS) on kaolinite surfaces. As a major clay mineral component in coal slime, kaolinite reduces coal's calorific value but holds potential for industrial and agricultural applications. The research identified distinct interactions between SDS and the tetrahedral Si O layer and octahedral Al O layer of kaolinite, in contrast to quartz, which contains only the tetrahedral Si O layer. This difference is crucial for the effective separation of kaolinite from quartz. The study focused on analyzing SDS adsorption on the (001) and (00-1) planes of kaolinite. The findings revealed strong adsorption of SDS on kaolinite surfaces, especially on the (001) plane, evidenced by significant charge transfer indicating efficient chelation. This effect results from the interaction of SDS's electron-donating atoms (such as S and O) with the metal atoms on the surface of kaolinite. Adsorption strength was quantified through adsorption energy calculations, showing a stronger interaction on the (001) surface. Experimental validations, including single mineral flotation experiments and infrared spectroscopic analysis, further corroborated the simulation outcomes. These tests demonstrated improved flotation recovery of kaolinite in the presence of SDS and with reduced particle size. Infrared analysis revealed that SDS selectively and strongly adsorbs on kaolinite surfaces, as indicated by diminished hydroxyl group stretching vibrations in the FTIR spectrum and changes in absorption peaks related to inorganic vibrations and sulfonic acid groups. The study demonstrates that SDS can selectively and effectively adsorb onto kaolinite surfaces, particularly on the (001) plane, facilitating the efficient extraction of fine kaolinite from coal slime. This research holds significant potential for enhancing the utilization of resources from coal slime in the coal industry, offering both economic and environmental benefits.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Huili Han,Yulian Wang,Feng Rao,Tao Liu,Haoxuan Sun,Wanzhong Yin
The issue that eliminating the negative effects of inevitable ions in the pulp on mineral flotation separation has attracted widespread attention. To achieve the efficient flotation separation of limonite from quartz, citric acid was utilized as a depressant for quartz in this paper. The solubility of limonite was studied using inductively coupled plasma tests (ICP), and the effect of Fe 3+ and citric acid on the separation of limonite from quartz under sodium oleate (NaOL) system was investigated using batch flotation tests. The underlying mechanisms were probed through zeta potential measurements, infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), and contact angle detection. It was found that limonite could dissolve a certain number of Fe 3+ in the pulp. These Fe 3+ adsorbed onto quartz and acted as the active sites to promote the adsorption of NaOL, thereby enhancing quartz flotation evidently and deteriorating the separation of limonite from quartz. Fortunately, citric acid could depress the flotation of iron-activated quartz quite well by covering and desorbing the active sites of Fe 3+ and causing the steric hindrance to prohibit the adsorption of NaOL. Meanwhile, the hydrophilic groups in citric acid could also increase the surface hydrophilicity of quartz and enhance the inhibitory effect. In comparison, Fe 3+ and citric acid had little effect on the adsorption of NaOL onto limonite since its surface exposed enough Fe-active sites for the adsorption of NaOL. Thus, the difference in the floatability of limonite and quartz was enlarged, eventually achieving a better separation of them. This research sheds new light on the role of citric acid in the selective separation of quartz from soluble iron minerals.
研究领域:
矿物加工工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
·
2014
·
IF 3.377
Tianfu Li,Naimin Shao,Yuntao Liu,Jingjing Hu,Yu Wang,Li Zhang,Hongli Wang,Dongfeng Chen,Yiyun Cheng
We investigate the interactions of generation 3 (G3) poly(amidoamine) (PAMAM) and G3 poly(propylenimine) (PPI) dendrimers with sodium dodecyl sulfate (SDS) in aqueous solution. Size and structure of the dendrimer–SDS aggregates as a function of SDS/dendrimer molar ratio were revealed by SAXS and NMR. G3 PAMAM has a relatively open and dense-core structure, while G3 PPI with the same number of surface amine groups possesses a compact and uniform structure. Upon addition of SDS, much more SDS monomers were encapsulated in the interior of PPI rather than in PAMAM. More significant size increase in PAMAM–SDS aggregate is observed at low SDS concentrations, due to the binding of SDS on PAMAM surface and further assembly into larger supramolecular structures. Both noncooperative and cooperative binding of SDS on G3 PPI surface are observed, while only noncooperative binding is proposed on G3 PAMAM, due to its open surface and large surface group distance. The size of the PPI–SDS complex is larger than that of PAMAM–SDS at higher SDS concentrations. Within the investigated SDS concentrations, SDS exhibits much stronger interactions with G3 PPI than with G3 PAMAM. These results provide new insights into dendrimer–surfactant interactions and explain why PPI is much more cytotoxic than PAMAM.
研究领域:
生物化学
·
材料科学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Wenxing Zhu,Jianhua Pan,Xinyang Yu,Guichun He,Cheng Liu,Siyuan Yang,Yuhui Zeng,An Zeng,Taotao Liu
The effect of hydroxypropyl starch (HPS) on the flotation separation of fluorite from calcite using sodium oleate (NaOl) as a collector was studied. Micro-flotation results of single minerals showed that both fluorite and calcite presented good floatability in the presence of NaOl. However, by adding HPS before NaOl, the calcite flotation recovery was selectively reduced. The flotation of artificially mixed minerals confirmed that an efficient separation of fluorite from calcite could be achieved using the reagents scheme of HPS/NaOl. Zeta potential measurements demonstrated that HPS prevented the NaOl adsorption onto the calcite surface while it did not inhibit the interaction of NaOl with the fluorite surface. Fourier Transform Infrared (FT-IR) analysis was also revealed that the selective adsorption of HPS onto the calcite surface.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2016
·
IF 2.196
Guangyue Bai,Jianhui Sheng,Yujie Wang,Hui Wu,Yang Zhao,Kelei Zhuo,Margarida Bastos
The thermodynamics of molecular self-assembling of an anionic biosurfactant, sodium cholate (NaCA) and its mixtures with sodium dodecyl sulfate (SDS) in aqueous solution have been investigated by isothermal titration calorimetry (ITC), along with fluorescence and conductivity measurements. Different critical concentrations were obtained by these three techniques – critical pre-micelle concentration (cmc pre ) and critical micelle concentration (cmc) for pure NaCA, and critical micelle concentrations (cmc mix ) for the mixed systems with differently initial SDS concentrations. Importantly, ITC allowed us to directly measure the enthalpy changes of pre-micelle formation (Δ H premic = (−0.28 ± 0.02) kJ·mol −1 ) and of micelle formation (Δ H mic = (−1.76 ± 0.05) kJ·mol −1 ) for pure NaCA as well as the enthalpies for micellization for the mixed systems NaCA/SDS. The non-ideality of the mixed surfactant solution was evaluated in terms of interaction parameters and excess enthalpies that were calculated in the light of Clint’s and Rubingh’s models. It was found that there is an obvious synergistic effect in the NaCA/SDS mixed system. From all these results we can ascribe the strong interaction between the same charge surfactants NaCA and SDS to the structural difference in their hydrophobic moieties. In fact, the flexible alkyl chains of SDS and the non-planar hydrophobic β -faces of NaCA tend to have a more compact packing than pure NaCA.
研究领域:
生物化学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2022
·Vol. 59
·期 3
·221-230
·
IF 1.058
Fengli Gong,Hong Xu,Jinxiang Dong
Sodium oxalate (Na 2 C 2 O 4 ) is an excellent phosphorus-free agent, but in sodium oxalate-containing detergents with sodium dodecylbenzene sulfonate (SDBS) and sodium carboxymethyl cellulose (CMC), significant ash deposition occurs on cotton fabrics. SDBS is the main anionic surfactant in modern detergents and cotton fiber is the most commonly used textile fiber. In this study, sodium lignosulfonate (LS) was investigated for its ability to prevent redeposition in SDBS-Na 2 C 2 O 4 -CMC-LS formulations. The effects of LS on ash content, whiteness, optimum washing temperature, calcium oxalate morphology, zeta potential and surface tension were carefully analyzed. The results showed that the addition of LS significantly improved the prevention of ash deposits on cotton fibers. The ash content was less than 0.46% and a small amount of particles were scattered on the cotton fibers. LS showed good dispersibility but had little effect on the washing power and zeta-potential.
研究领域:
材料科学
·
纺织工程
·
表面化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Shanshan Yang,Zhiyan Huang,Chunquan Li,Wen Li,Lin Yang,Pingxiao Wu
Tetracycline-cadmium combined contaminants have drawn increasing attentions due to their high environmental risk. In this study, vermiculite was modified by dodecyl dimethyl betaine (BS-12) to obtain a kind of organo-vermiculite (BS-VER). After modification, BS-12 was grafted on the surface of vermiculite successfully. Due to the negatively charged head group of BS-12 and improved hydrophobicity of BS-VER, the affinities of BS-VER towards cadmium (Cd 2+ ) and tetracycline (TC) were enhanced. In the single system, the maximum adsorption capacities of Cd 2+ and TC on BS-VER increased from 14.98 to 19.72 mg g −1 and from 16.03–20.95 mg g −1 , respectively. In the binary system, Cd-TC complex was formed and considered to be new adsorption site for Cd 2+ adsorption, resulting in slight enhanced adsorption capacity of BS-VER towards Cd 2+ and TC. Ion exchange, electrostatic attraction, hydrophobic interaction and chelation reaction were the main mechanisms. BS-VER exhibited good advantages in the simultaneous removal of heavy metals and organic contaminants.
研究领域:
环境科学
·
污染控制
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Hepeng Zhou,Fanxin Xie,Xianping Luo,Boyuan Zhang,Siqi Yang,Yongbing Zhang
In this paper, the effect of benzyl arsenic acid (BAA) and sodium oleate (NaOl) on mineral flotation was studied for the first time from the perspective of the difference of solidophilic atom. Compared with NaOl, the solidophilic O atoms of BAA had stronger electronegativity and the bonding strength of As-O was lower than that of C O. Thus, when BAA adsorbed on the mineral surfaces, the bonding strength of the solidophilic O atoms with the adsorption sites would be higher. The DFT calculation of adsorption model indicated that after activation by Ca(OH) + , the adsorption capacity of BAA on spodumene surface was significantly higher than that of NaOl, while the adsorption strength on feldspar was similar to that of NaOl. This result was corroborated by flotation experiment and adsorption capacity test. Thus, compared with NaOl, BAA could separate and recover spodumene more effectively.
研究领域:
矿物加工工程
·
材料科学与工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）