CORROSION SCIENCE
·
2018
·
IF 4.862
Jie Qiu,Bin Leng,Huajian Liu,Digby D. Macdonald,Angjian Wu,Yanyan Jia,Wandong Xue,Guojun Yu,Xingtai Zhou
The effect of SO 4 2− on the corrosion behavior of 316 L stainless steel (SS) in molten FLiNaK (LiF-NaF-KF: 46.5–11.5–42 mol.%) salt was studied. Results reveal that the SO 4 2− in the salt remarkably accelerates the corrosion of 316 L SS by promoting the dissolution of Cr, leading to increasing intergranular corrosion of the alloy. On the other hand, the results of structural characterization indicate that the SO 4 2− can react with Mn to form MnS at the grain boundaries of the alloy. The galvanic couple between MnS and steel matrix could further accelerate the intergranular corrosion of 316 L SS in molten fluoride salt environments.
研究领域:
材料科学
·
腐蚀科学
·
无机化学
·
核工程材料
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高温电化学
✓ 已验证
DOI
高影响因子
Advances in Materials Science and Engineering
·
2021
·
IF 1.726
Feng Zhang,Dong-Sheng Wang,Fan Yang,Tian-Yu Li,Hong-Yan Li,Jian-Guo Cui
Sodium benzenesulfonate was doped into polypyrrole-modified granular activated carbon (pyrrole-FeCl3·(6H2O)-sodium benzenesulfonate-granular activated carbon; PFB-GAC) with the goal of improving the modified GAC’s ability to adsorb sulfate from aqueous solutions. At a GAC dosage of 2.5 g and a pyrrole concentration of 1 mol L−1, the adsorption capacity of PFB-GAC prepared using a pyrrole:FeCl3·(6H2O):sodium benzenesulfonate ratio of 1000 : 1500 : 1 reached 23.05 mg g−1, which was eight times higher than that for GAC and two times higher than that for polypyrrole-modified GAC without sodium benzenesulfonate. Adsorption was favored under acidic conditions and high initial sulfate concentrations. Doping with sodium benzenesulfonate facilitated polymerization to give polypyrrole. Sodium benzenesulfonate introduced more imino groups to the polypyrrole coating, and the N+ sites improved ion exchange of Cl− and SO42− and increased the adsorption capacity of sulfate. Adsorption to the PFB-GAC followed pseudo-second-order kinetics. The adsorption isotherm conformed to the Langmuir model, and adsorption was exothermic. Regeneration using a weak alkali (NH3·H2O), which released OH− slowly, caused less damage to the polypyrrole than using a strong alkali (NaOH) as the regeneration reagent. NH3·H2O at a concentration of 12 mol L−1 (with the same OH− concentration as 2 mol L−1 NaOH) released 85% of the sorbed sulfate in the first adsorption-desorption cycle, and the adsorption capacity remained >6 mg g−1after five adsorption-desorption cycles.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2018
·
IF 2.196
Xianze Meng,Xiaozhen Wu,Junsheng Yuan
Solid–liquid equilibria of the quaternary system (Ca2+, Mg2+//SO32–, SO42–-H2O) and its ternary systems (Ca2+//SO32–, SO42–-H2O; Mg2+//SO32–, SO42–-H2O and Ca2+, Mg2+//SO32–-H2O) at 298.15 K were investigated via isothermal solution saturation method. Furthermore, the phase diagrams of these systems were constructed. The results show that the quaternary diagram contains three invariant points, seven univariant curves, and five crystallization fields corresponding to MgSO4·7H2O, MgSO3·6H2O, CaSO3·0.5H2O, Ca(SO3)0.89(SO4)0.11·0.5H2O, and CaSO4·2H2O. The crystallization field of Ca(SO3)0.89(SO4)0.11·0.5H2O is the largest compared with the others. In addition, crystal complex Ca(SO3)0.89(SO4)0.11·0.5H2O also appears in the ternary system (Ca2+//SO32–, SO42–-H2O), which contains two invariant points, three invariant curves, and three crystallization fields. Both of the other two ternary diagrams contain one invariant point, two invariant curves, and two crystallization fields. The Pitzer model was applied to calculate salt solubilities, and the results agree well with the experimental data. Binary and ternary ionic interaction parameters (θSO4,SO3, ψMg,SO4,SO3, ψCa,SO4,SO3, and ψCa,Mg,SO3) and ion pair parameters (CaSO3 and MgSO3) are presented in this work based on the solubilities of these ternary systems.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
CORROSION SCIENCE
·
2022
·
IF 7.72
Jin Huang,Jian Zhang,Tingting Luo,Ruxia Liu,QinQin Wei,Guoqiang Luo,Qiang Shen
Corrosion test of Mo in LiF-LiCl-LiBr salt with different SO 4 2 content have been studied. MoO 2 , Mo 3 S 4 and MoS 2 was formed after corrosion. The SO 4 2- will corrode the grain boundary of Mo and lead to the decomposition of large Mo grain. Moreover, the formation of different corrosion products will lead to significant changes in volume and destroy the stable oxide layer which could be protective. The Mo will be severely corroded in LiF-LiCl-LiBr molten salt with a higher content of SO 4 2- .
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
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Minwang Laipan,Qingze Chen,Ziyu Wang,Min Zhang,Mengyao Yuan,Runliang Zhu,Luyi Sun
Layered double hydroxides (LDHs) have been considered important sinks for ionic contaminants in nature and effectively engineered adsorbents for environmental remediation. The availability of interlayer active sites of LDHs is critical for their adsorptive ability. However, inorganic LDHs generally have a nano-confined interlayer space of ca. 0.3–0.5 nm, and it is unclear how LDHs can utilize their interlayer active sites during the adsorption process. Thus, LDHs intercalated with SO42–, PO43–, NO3–, Cl–, or CO32– were taken as examples to reveal this unsolved problem during Cd2+ adsorption. New adsorption behaviors and pronounced differences in adsorption performance were observed. Specifically, SO42–/PO43– intercalated LDHs showed a maximum Cd2+ adsorption capacity of 19.2/9.8 times higher than other LDHs. The ligand exchange of H+ (on the surface −OH) by Cd2+ and formation of Cd-SO42–/PO43– complexes led to the efficient removal of Cd2+. Interestingly, interlayer SO42– was demonstrated to be able to move to the edges/outer surfaces of LDHs, providing abundant movable adsorption sites for Cd2+. This novel phenomenon made the SO42– intercalated LDH a superior adsorbent for Cd2+ among the tested LDHs, which also suggests that LDHs with a nano-confined interlayer space can also highly utilize their interlayer active sites based on the mobility of interlayer anions, offering a new method for constructing superior LDH adsorbents.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-17
·
IF 15.7
Yao Xiayan,Wang Zhi,Guo Jianwei,Qian Guoyu,Wang Hongchen,Gong Xuzhong,Wang Dong
Tuning anionic solvation structures and dynamic processes at solid–liquid interfaces is critical yet challenging for stabilizing Zn metal negative electrodes in Zn-ion batteries, particularly due to the issue of dendrite formation and hydrogen evolution reaction. Here, we show that highly hydrated SO 4 2- can be effectively modulated under a strong magnetic field via the Paschen–Back effect on O-H vibrations, which reorients individual water molecules to manipulate Zn 2+ solvation and protonated water clusters (H 3 O + ). Molecular dynamics simulations and in situ Raman spectroscopy reveal that the hydrated SO 4 2- –H 2 O complexes promote Zn 2+ nucleation and deposition on the (002) plane, with preferential oxygen adsorption inhibiting two-dimensional Zn 2+ diffusion. Moreover, magnetizing the electrolyte disrupts the Grotthuss proton-transfer pathway, suppressing H 2 evolution and further reducing dendrite formation. By employing inexpensive permanent magnets without external power, this magnetization strategy offers a practical, energy-efficient route to enhance both the stability and performance of zinc-based rechargeable batteries.
研究领域:
电化学
·
材料科学
·
物理化学
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储能技术
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电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED ENERGY
·
2019
·
IF 8.426
Zain Ali Saleh Bairq,Hongxia Gao,Yufei Huang,Haiyan Zhang,Zhiwu Liang
A significant impediment to the widespread adoption of amine-based post-combustion technique for CO 2 capture from flue gas is the huge energy demand for amine solvent regeneration. In this study, five novel bifunctional heterogeneous catalysts e.g., SO 4 2− /ZrO 2 /SiO 2 with different molar ratios of zirconia and SO 4 2− /ZrO 2 as a parent catalyst were synthesized and applied to evaluate their effectiveness in enhancing the CO 2 desorption and solvent regeneration of 5M monoethanolamine solution with CO 2 loading of 0.5 ± 0.01 mol CO 2 /mol monoethanolamine at 97 °C. The catalysts were characterized by Fourier transform-infrared spectrometry, pyridine-infrared spectroscopy, X-ray diffraction, N 2 -adsorption-desorption, and ammonia-temperature programmed desorption. The results demonstrated that these catalysts can significantly reduce the heat duty for CO 2 desorption by 36.48% compared to without catalyst and enhance desorption rate by 35.1%. The results also showed that SO 4 2− /ZrO 2 /SiO 2 15% presented the highest efficiency compared to the other SO 4 2− /ZrO 2 /SiO 2 ratios and the super solid acid catalyst SO 4 2− /ZrO 2 . Additionally, to investigate if the catalysts induce any unfavorable effects on the amine, the absorption of CO 2 by regenerated amine solvent was studied. Finally, a reaction mechanism for the amine solvent regeneration with the synthesized catalyst e.g., SO 4 2− /ZrO 2 /SiO 2 was suggested.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Xiao Yu,Banghong Deng,Lixia Yang,Moliang Zou,Zhenglin Chen,Yixuan Fan,Zhihui Wei,Kai Chen,Mingxia Lu,Tiantian Ying,Jie Zhang,Weili Dai
Mn 2 O 3 is a conventional catalyst that is applied in photothermal catalytic oxidation of toluene while regular anions like SO 4 2- , Cl - , and NO 3 - from different Mn precursors are left in Mn 2 O 3 . When applied in toluene degradation, the declining activity of Mn 2 O 3 is always observable because the residual anions block the Mn 4+ /Mn 3+ active sites, shield the oxygen vacancies, and cube the production of active oxygen species (O 2 - , O - ). Herein, it is found that the residual SO 4 2- , Cl - , and NO 3 - make Mn 2 O 3 incapacitated in deeply oxidizing the intermediates and cutting off the reaction process, and their influence ranks in the order of SO 4 2- >Cl - >NO 3 - . Compared with pristine Mn 2 O 3 , the drops in CO 2 conversion efficiency account for 11 %, 60 %, and 73 %, respectively. Nevertheless, rinsing with water is an effective method to remove the residual anions, and the more the rinsing, the better the toluene mineralization degree. This work provides a profound cognition of the deactivation mechanism of SO 4 2- , Cl - , and NO 3 - and points out an effective way to abate their negative effect for the first time.
研究领域:
环境科学
·
催化材料
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2021
·
IF 4.837
Ikram Ullah,T.A. Taha,Asma M. Alenad,Ikram Uddin,Asif Hayat,Ashiq Hayat,Muhammad Sohail,Ahmad Irfan,Javid Khan,Arkom Palamanit
In this study, sulfated zirconia with loading of platinum (Pt) and platinum alumina (PA-Al 2 O 3 ) promoted sulfated zirconia (SZ) catalysts were synthesized by hydro-thermal route. The samples were characterized by XRD, BET, FT-IR, NH 3 -TPD, and TGA. The catalytic efficiency of all the synthesized catalysts was tested on the isomerization of n -butane. The results indicated that the conversion of n -butane (71.04%), selectivity to i -butane (98.96%), and yield of i -butane (70.30%) is significantly high for PA/SZ sample than that of Pt modified SZ and bare SZ. The results of this study suggest that the SZ modified by Pt/Al 2 O 3 (PA) provided better catalytic performance and higher stability (within 25 h of TOS), when compared with SZ, and Pt-modified SZ.
研究领域:
化学工程
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
POWDER TECHNOLOGY
·
2016
·
IF 2.759
Guoqing Wu,Haiming Qin,Shaowei Feng,Xiaojian Tan,Zhaohua Luo,Yongfu Liu,Hezhu Shao,Jun Jiang,Haochuan Jiang
Nano-rods and tremelliform Gd 2 O 2 S:Pr powders were prepared via a urea precipitation method using SO 2 and SO 4 2 − as sulfuration agent, respectively. Gd 2 O 2 S:Pr nano-rods with diameter of about 200 nm were obtained while the scale of tremelliform Gd 2 O 2 S:Pr reaches tens of microns. Gd 2 O 2 S:Pr nano-rods exhibits better crystallinity and stronger luminescence intensity compared to that of tremelliform Gd 2 O 2 S:Pr. Intensive study on their formation process and mechanism is presented in this work. It is proposed that Gd 2 O 2 S:Pr nano-rods were obtained from Gd 2 (SO 3 ) 3 ·3H 2 O nano-rods synthesized via a dissolution-deposition process while tremelliform Gd 2 O 2 S:Pr is prepared via an oriented growth process using SO 4 2 − as sulfuration and regulation agent. As prepared Gd 2 O 2 S:Pr powders show strong green emission light at 512 nm under excitation of 318 nm ultraviolet light. Optimal concentration of Pr 3 + is around 1 mol% since it exhibits the highest luminescence intensity at that concentration. This study is extremely prospective for the preparation and morphology control of sulphide luminescent materials .
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Green Energy & Environment
·
2026
·
IF 16.7
Hanlei Yan,Jing Li,Mengyu Li,Li Shuai,Zhuotong Wu
Growing demand for sustainable energy harvesting drives research into thermoelectric materials that convert waste heat into electricity. Hydrogel-based systems offer advantages but are limited by toxic redox couples and poor mechanical-thermoelectric balance. Herein, we design and fabricate a highly stretchable, organic flexible gel-based photo-thermoelectric device by integrating biomass-derived sodium lignosulfonate (LS) and employing a novel non-toxic redox couple (SO 4 2- /SO 3 2- ). Unlike the usual method of introducing high salt or metal ions, this work uses the -SO 3 - groups in biomass LS to enhance the concentration gradient between SO 4 2- and SO 3 2- , thereby endowing the gel with high thermoelectric performance, achieving a thermal power of up to 2.6 mV K -1 . Moreover, benefiting from the superior photothermal conversion capability of LS, the as-prepared gel realizes integrated photo-thermoelectric conversion, which further elevates its thermal power to approximately 3.5 mV K -1 . The resulting gel is also capable of powering small electronic devices under practically achievable temperature gradients and can harvest human body heat. This work breaks from traditional toxic redox systems and represents a significant advance toward high-performance, environmentally benign thermoelectric devices based on sustainable biomass materials.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2018
·
IF 3.12
Yanjun Zhang,Changwei Zhao,Shaofeng Zhang,Ling Yu,Jiding Li,Li-an Hou
The lack of fresh water in the world makes the search for an effective method to decontaminate water an urgent priority. An important step is to remove different multivalent ions in salt treatment. Nanofiltration (NF) has been used for treating water containing different kinds of salts. In this work, sulfonate group-modified graphene oxide (SGO) was prepared, and added during the interfacial polymerization (IP) reaction to prepare SGO-modifiedNF membranes (PA-SGO). The chemical composition, structure and surface properties of PA and PA-SGO membranes were characterized by FT-IR, XPS, SEM, AFM, contact angle and zeta potential measurements. Their water flux , salt rejection and anti-fouling abilities were investigated systematically. The testing results showed that the water flux of PA-SGO (0.03% SGO) was 45.85 LMH under a pressure of 0.2 MPa, and the salt rejection varied in the order of Na 2 SO 4 (98.99%) > MgSO 4 (91.25%) > MgCl 2 (42.27%) > NaCl (21.96%). An anti-fouling experiment indicated that the PA-SGO membrane had good anti-fouling properties because of its decreased roughness and increased hydrophilicity and electronegativity. The PA-SGO membrane has good potential for use in removing salt ions from water.
研究领域:
环境科学
·
材料科学
·
水处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）