JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2014
·
IF 2.063
Jianrong Li,Jinsheng Chen,Yanke Yu,Chi He
The Fe–Mn–Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg 0 ) removal in simulated coal-fired flue gas . The incorporation of Fe could remarkably enhance the SO 2 -resistance of Fe–Mn–Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg 0 removal efficiency. More than 95% of Hg 0 could be removed at 100 °C under the conditions of 60 ppm HCl, 3% O 2 ( v/v ), 5% H 2 O ( v/v ) and 400 ppm SO 2 . Hg-TPD results indicated that Hg 0 adsorption amount decreased after the addition of H 2 O or SO 2 . The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mn x + (i.e., Mn 3+ /Mn 4+ ) and Ce 3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity . Overall, the catalytic performance of the Fe–Mn–Ce/CP catalyst was closely related to the Fe 3+ state, high ratios of (Mn 4+ + Mn 3+ )/Mn 2+ and high content of not fully coordinated cerium species.
研究领域:
环境催化
·
大气污染防治
·
能源化学工程
·
材料科学与工程
·
表面化学
·
烟气净化技术
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DOI
高影响因子
INTERNATIONAL JOURNAL OF PHOTOENERGY
·
2012
·
IF 1.769
Quan Gu,Huaqiang Zhuang,Jinlin Long,Xiaohan An,Huan Lin,Huaxiang Lin,Xuxu Wang
The C-doped CdO photocatalysts were simply prepared by high-temperature solid-state process. The as-prepared photocatalysts were characterized by X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results demonstrated that the carbon was doped into CdO, resulting in the red-shift of the optical absorption of CdO. The photocatalytic behavior of CdO and C-doped CdO was evaluated under the visible light irradiation by using the photocatalytic hydrogen evolution as a model reaction. The C-doped CdO photocatalysts had higher photocatalytic activity over parent CdO under visible light irradiation. The results indicated that the H2 production was due to the existence of CdS and the enhancement of visible light photocatalytic activity of H2 production was originated from the doping of carbon into the CdO lattice. The probably reaction mechanism was also discussed and proposed.
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Junyun Cheng,Chenruobing Zhang,Jie Lin,Yeqiu Zhao,Yu Huang,Meiqing Shi,Zhiqi Zhu,Liyuan Chai,Xu Yan,Qingwei Wang
The coking industry generates hazardous desulfurization waste liquid (DWL), which contains abundant sulfur-containing salts such as ammonium thiocyanate (AT), ammonium sulfate (AS), and ammonium thiosulfate. However, improper handling of DWL poses severe environmental risks. Conventional treatment methods, including high-temperature pyrolysis, chemical precipitation, and evaporation crystallization, suffer from critical limitations: low sulfur recovery rates (typically 40%–70%), high operational costs, and insufficient product purity. To address these challenges, this study innovatively proposes an evaporation-cooling pretreatment process guided by the NH₄SCN-AS-H₂O ternary phase equilibrium system. For the first time, this method achieves ultra-high-purity products: ammonium thiocyanate (AT) at 98.54% purity and ammonium sulfate (AS) at 99.92% purity, with a total sulfur recovery rate of 90.92%—40% higher than traditional approaches. Additionally, the mixed salt (MS) byproduct undergoes solvent crystallization to yield secondary products with purity exceeding 99.96%, eliminating the need for toxic reagents. By integrating phase diagram-guided optimization with streamlined operational procedures, this process significantly reduces costs while ensuring environmental sustainability, thereby establishing a novel pathway for resource recovery from DWL.
研究领域:
环境工程
·
化工技术
·
资源回收
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DOI
高影响因子
HYDROMETALLURGY
·
2023
·
IF 4.7
Changye Mang,Guanghui Li,Yanhu Chen,Jun Luo,Mingjun Rao,Tao Jiang
Partial neutralization is typically used to remove Fe 3+ ions from the acid leach solution of laterite. However, during this process, significant amounts of Mg 2+ , Ni 2+ , Co 2+ , and SO 2– 4 are lost. With increasing initial Fe 3+ concentration and solution pH, the severity of loss increases, with the precipitation of Fe 3+ . In this study, the mechanisms of ion co-precipitation during partial neutralization were investigated. Based on density functional theory calculations, a precipitation pathway through the formation of [Fe 4 (OH − ) 2 (SO 2– 4) 4 ]•[2SO 2 – 4 •yH 2 O]•[M 2+ ] was proposed. The differential charge density diagram indicated that the O atoms acted as the charge acceptors and maintained the precipitate structure. The coordination between M 2+ and SO 2– 4 could be destroyed via intense agitation, releasing approximately 100% of Mg 2+ , Ni 2+ , and Co 2+ ions from the precipitates to the solution. Furthermore, the addition of cationic or anionic surfactants limited the formation of these coordination bonds. The highest retention percentages of Mg 2+ , Ni 2+ , and Co 2+ in solution were 99.4, 99.6, and 99.9%, respectively, after adding 2 × 10 −5 mol/L of sodium dodecylbenzenesulfonate (CTAB). In addition, a high temperature could break these coordination bonds. The retention percentages of Mg 2+ , Ni 2+ , and Co 2+ increased from 82.6, 85.2, and 86.5% to 99.9, 99.6, and 99.8%, respectively, as the temperature increased from 25 to 65 °C. These results confirmed the rationality of the proposed structure of the precipitate.
研究领域:
化学工程
·
材料科学
·
环境化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Yingying Chen,Zhihua Liu,Jinshan Liu,Miao Zhou,Zhifeng Liu
The visible-light-driven photoelectro-Fenton technology integrates the synergistic advantages of photoelectrocatalysis and the Fenton reaction. However, the design of current photoanode materials still suffers from issues such as low interfacial charge transfer efficiency and insufficient exposure of active sites. In this study, a novel S-scheme ZnIn 2 S 4 /α-Fe 2 O 3 heterojunction photoanode was successfully constructed. The built-in electric field established at the S-scheme heterointerface effectively facilitates the spatial separation of photogenerated charge carriers. The S O bonds formed at the two-phase interface serve as atomic-level electron transport channels, enabling rapid and directional transfer of photogenerated electrons enriched in the conduction band of ZnIn 2 S 4 to the Fe 3+ sites on the α-Fe 2 O 3 surface, where Fe 3+ is reduced to Fe 2+ . The generated Fe 2+ promotes the conversion of H 2 O 2 to produce hydroxyl radicals (·OH), while the regenerated Fe 3+ from the reaction is again reduced to Fe 2+ by photogenerated electrons, establishing a self-sustaining cycle that endows the system with highly efficient oxidative degradation capability. The results demonstrate that the synergistic mechanism leads to a 5.55-fold increase in the degradation rate. Benefiting from the efficient directional charge transfer and separation, the total organic carbon (TOC) removal efficiency reaches 80.09% within 60 min.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Chuqiang Que,Hongwei Zhu,Chang Liu,Ziang Qiang,Chen Xu,Minjie Li,Jia Liu,Jing Cao,Pengjian Zuo,Jing Wang,Xin Yang
With the rapid expansion of textile printing and aquaculture industries, efficient dye wastewater treatment is urgently needed. Here, magnetic sulfonic acid-functionalized covalent organic frameworks (Fe 3 O 4 @TpBD-SO 3 H COFs) were synthesized via a functional defect strategy using 4-aminobenzene-1,3-disulfonic acid (ADSA) as a competing monomer, generating periodic and sulfonate-rich nano adsorbent. Adsorption experiments involving malachite green (MG) and crystal violet (CV) in single and binary systems, supported by adsorption model fitting, indicated multimolecular adsorption through non-parallel molecular orientations. In binary adsorption system, MG enhanced CV adsorption (synergistic effect), whereas CV suppressed MG adsorption (antagonistic effect). Dynamic competitive adsorption tests suggested that adsorption configuration transitions between single and binary systems influenced this co-adsorption phenomenon. Incorporating Fe 3 O 4 magnetic cores rendered Fe 3 O 4 @TpBD-SO 3 H COFs highly hydrophilic, achieving excellent adsorption capacities for MG (1010.6 mg/g) and other cationic dyes, while minimally adsorbing anionic dyes. Moreover, the material exhibited strong resistance to interference from metal salts and maintained stable adsorption performance after ten regeneration cycles. Successful purification of real wastewater samples further demonstrates its practical potential for selective cationic dye removal from complex aqueous systems.
研究领域:
环境科学
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材料科学
·
化学工程
·
纳米技术
·
水处理
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吸附技术
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染料去除
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磁性材料
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功能材料
·
有机化学
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产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Yun Li,Zelong Huang,Liyuan Chai,Yunyan Wang,Xin Wang,Yong Ke,Cong Peng,Xiaobo Min
High-silica-calcium oxygen-sulfur mixed lead-zinc (HSC-PbZnOS) ore is a complex and refractory resource. This study proposed a novel and cleaner process to extract zinc and conserve sulfur and calcium in CaS form from HSC-PbZnOS concentrate. After mineral composition characterization of HSC-PbZnOS concentrate, thermodynamic and experimental investigations reveal that zinc oxides can be directly reduced by carbon, ZnS first reacted with CaO above 770 ℃ to form a stable intermediate CaZnSO (CaO + ZnS → CaZnSO), which is subsequently reduced above 1126 ℃ to Zn(g) and CaS (CaZnSO + C → Zn(g) + CO + CaS). Thus sulfur was fixed as CaS and SO₂ emission was avoided. SiO₂ tended to react with CaO to form silicates, partially inhibiting sulfur-fixation. However, under reducing conditions around 1300 ℃, silicate decomposed to release CaO, allowing it to regain reactivity with ZnS. In addition, pilot tests show that adding 10 wt% limestone increased the Zn reduction rate to 98.9% and the sulfur fixation rate to 98.1%. The gaseous product was ZnO, and the residue mainly consisted of individual SiO₂ and CaS. This work provides a clean, short-process route for efficient utilization of complex HSC-PbZnOS resources with industrial potential.
研究领域:
冶金工程
·
湿法冶金
·
环境工程
·
矿物加工
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2022
·Vol. 23
·期 7
·2030-2041
·
IF 2.347
Gou Bin,Xie Congzhen,Wang Rui,Xu Huasong,Zhou Jiangang,Li Licheng
Carbon-based nanofillers reinforced composites with superb mechanical and electric properties are of growing importance in numerous applications. However, the ultra-high conductivities of carbon-based nanofillers will severely degrade the insulating performance of the polymer, restricting the implementation in electronic domain and power system. Herein, core-double-shell carbon nanotubes coated with silica and polydopamine (CNTs@SO@PDA) are prepared, significantly improving the tensile strength of the composite while maintaining its insulating property. Meanwhile, the sandwich-structured composite which is consisted of CNTs@SO@PDA/epoxy as central layer and boron nitride nanosheets coated by polydopamine (BNNS@PDA) filled epoxy as shielding layers achieved excellent breakdown strength of 19.5 kV/mm as well as superb tensile strength of 64.84 MPa, increasing about 13.37 % and 24.24 % compared with neat epoxy respectively. The simulation results demonstrate the electric field optimization and redistribution effect of sandwich-structured nanocomposites. This work provides a method for fabricating epoxy nanocomposite with marvelous mechanical and insulating properties, which can be applied to future electronic protectors and insulation equipment.
研究领域:
材料科学
·
电气工程
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产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 12
·2102423
·
IF 6.389
Guihao Zhong,Dingxin Liu
Photocatalytic splitting of water into hydrogen has attracted growing concerns as a promising strategy for the development of clean and renewable energy sources. Fabricating novel photocatalysts with high H 2 evolution rate and good cyclic stability is extremely vital for practical applications. Herein, a novel CdS/Cd 2 SO 4 (OH) 2 composite derived from cadmium nitrate doped Cd-MOF is deposited on the surface of butterfly wings with reticular hierarchical structure for efficient hydrogen evolution reaction. The combination of unique hierarchical structure and MOF-derived CdS nanoparticles endows them with strong light absorbability, small band gap, and superior photogenerated charges separation efficiency, leading to excellent photocatalytic efficiency. Furthermore, in-depth measurements reveal the reduction of Cd 2 SO 4 (OH) 2 to Cd on the surface of CdS particle during the photocatalytic process. The obtained Cd metal can act as the electron trap to improve the charge separation efficiency and further promote the hydrogen production performance. As a result, the MOF-derived CdS/Cd 2 SO 4 (OH) 2 and final CdS/Cd systems with reticular hierarchical structure exhibit significantly enhanced hydrogen production performance compared with CdS/Cd 2 SO 4 (OH) 2 powder and MOF-derived CdS nanoparticles under visible light irradiation. It is expected that this synthetic approach can be used to fabricate other composite photocatalyst materials with reticular hierarchical structure for efficient water splitting to hydrogen.
研究领域:
材料科学
·
能源转换与存储
·
纳米技术
·
光化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Yitian Su,Hongmin Jiang,Qiaoling Kang,Xianhe Meng,Xiaomei Zheng,Jianfei Lu,Xingkun Mei,Xiangdong Sun,Lijing Yan,Tingli Ma
All-organic aqueous batteries are deemed attractive energy storage systems for some application scenarios demanding recyclability or wearability. The efficient redox activity of quinone/hydroquinone-derived couples in biosystems inspires us to develop advanced batteries based on them. However, designing such an all-organic aqueous battery is challenging in selecting suitable electrolytes and active materials. A possible battery configuration consisting of the 9, 10-anthraquinone (AQ) anode, hydroquinone derivatives cathode, and weak acid metal-ion aqueous electrolyte is demonstrated herein. The molecular configuration of quinones and ionic type of electrolytes affect the redox behaviors of electrodes. Gratifyingly, a combination of AQ-tetrachlorohydroquinone-Al 2 (SO 4 ) 3 exhibits optimal performance. The underlying work mechanism of this full-battery configuration is disclosed by electrochemical and structural characterizations, finding that H + and Al 3+ are jointly involved in the redox reaction of quinone electrodes, and Al 3+ plays a crucial role. This work inaugurates a new framework for designing an all-organic aqueous battery.
研究领域:
能量存储系统
·
电化学
·
材料科学
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DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Zhang Jiyu,Yan Yongliang,Wang Xin,Cui Yanyan,Zhang Zhengfeng,Wang Sen,Xie Zhengkun,Yan Pengfei,Chen Weihua
Non-aqueous sodium-ion batteries (SiBs) are a viable electrochemical energy storage system for grid storage. However, the practical development of SiBs is hindered mainly by the sluggish kinetics and interfacial instability of positive-electrode active materials, such as polyanion-type iron-based sulfates, at high voltage. Here, to circumvent these issues, we proposed the multiscale interface engineering of Na 2.26 Fe 1.87 (SO 4 ) 3 , where bulk heterostructure and exposed crystal plane were tuned to improve the Na-ion storage performance. Physicochemical characterizations and theoretical calculations suggested that the heterostructure of Na 6 Fe(SO 4 ) 4 phase facilitated ionic kinetics by densifying Na-ion migration channels and lowering energy barriers. The (11-2) plane of Na 2.26 Fe 1.87 (SO 4 ) 3 promoted the adsorption of the electrolyte solution ClO 4 − anions and fluoroethylene carbonate molecules, which formed an inorganic-rich Na-ion conductive interphase at the positive electrode. When tested in combination with a presodiated FeS/carbon-based negative electrode in laboratory- scale single-layer pouch cell configuration, the Na 2.26 Fe 1.87 (SO 4 ) 3 -based positive electrode enables an initial discharge capacity of about 83.9 mAh g −1 , an average cell discharge voltage of 2.35 V and a specific capacity retention of around 97% after 40 cycles at 24 mA g −1 and 25 °C.
研究领域:
电化学
·
材料科学
·
能量存储
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DOI
高影响因子
Journal of Natural Gas Science and Engineering
·
2021
·
IF 4.965
Xuejian Liu,Quan Cao,Dongyan Xu,Shengjun Luo,Rongbo Guo
The maximum methane storage capacity (MSC) is of critical importance of methane hydrate to store methane. This paper reports the effects of vesicle solutions, formed through combination of carboxylate surfactants with cationic quaternary ammonium salt including hydroxypropyl trimethyl ammonium chloride chitosan (HACC) or dodecyl trimethyl ammonium chloride (DTAC), on the formation of methane hydrate. It was found that vesicles could raise the maximum MSC of hydrate by about 10 (V/V, the volume of methane stored by one volume of hydrate) at appropriate anion and cation concentrations. For example, at 800 ppm (parts per million) of sodium laurate (SL) and 600 ppm of HACC concentrations, the formed vesicles could elevate the maximum capacity to 151 V/V, 5.3% higher than that of sodium laurate alone. The vesicles formed could increase the maximum MSC, from 136 V/V to 147 V/V by sodium oleate (SO) and HACC, 145 V/V to 153 V/V by sodium decanoate (SD) and HACC and 137 V/V to 149 V/V by SO and DTAC. The reason for the enhancement is that the large hydrophobic space of the vesicles could solubilize methane molecules and facilitate them to contact with water molecules.
研究领域:
化学
·
材料科学
·
能源存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）