COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yihan Li,Xuezhu Zhang,Xiaoxiao Wang,Fushuo Shen,Yan Zhang,Changxin Du,Peng Shun,Likai Wang,Xiaobin Wang,Qiang Liu,Qinze Liu
Hexavalent chromium (Cr(VI)) is a highly toxic pollutant with substantial risks to ecosystems, rendering its efficient removal from waters a critical challenge. This study fabricated a novel poly(pyrogallol-tetraethylenepentamine)/carbonizing corncob (PPTA/CC) composite for Cr(VI) decontamination by decorating mussel-inspired resin onto carbonized corncob (CC) via a facile modification strategy. The PPTA/CC hybrid synergistically integrated the hierarchical porosity of the CC support with the abundant phenolic hydroxyl and amino functional groups of PPTA polymer layer, thereby facilitating rapid adsorption-reduction of Cr(VI). The theoretical maximum adsorption capacity was determined to be 787 mg g −1 , with the process being spontaneous (as indicated by negative ΔG°) and endothermic, well-described by the Langmuir isotherm and pseudo-second-order kinetic models. PPTA/CC candidate also exhibited outstanding selectivity and stability toward Cr(VI) in the presence of common coexisting ions. These results highlight PPTA/CC as a promising composite material for the efficient remediation of Cr(VI) in wastewater treatment applications.
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PLASMA SCIENCE & TECHNOLOGY
·
2022
·Vol. 24
·期 12
·124017
·
IF 1.842
Xinluo TIAN,Heping LI,Liyu ZHENG,Fangjian LI,Zhongyang ZHENG,Shengming YIN,Xinyun WANG,Youwei YAN
In this study, a Cr2O3 nanosheet (Cr2O3 NS) inserted Cr-Zr-O coating was developed as a hydrogen isotope permeation barrier. The Cr2O3 NSs, fabricated by rapid heat treatment, were amorphous with a thickness of only several nanometers. These Cr2O3 NSs were then incorporated into a Cr-Zr-O multi-metal oxide composite coating via a dip-coating method to form a coating. The effect of the Cr2O3 NS concentration on the morphology, microstructure and deuterium permeation resistance of the coating was studied. With the addition of 1.0 g l−1 Cr2O3 NSs, compared with the Cr-Zr-O coating without NSs, the permeation reduction factor of the resultant coating was enhanced from 249 °C to 575 °C at 500 °C. The coating, with a thickness of nearly 193 nm, achieved a comparable deuterium resistance that was above two orders of magnitude higher than the steel substrate. The results show that ceramic NSs can serve as effective fillers for enhancing the coating performance when functioning as a hydrogen isotope barrier.
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HYDROMETALLURGY
·
2026
·
IF 6.3
Ronghao Liu,Yongqi Yang,Fan Wang,Yingrui Zhuang,Yangyang Wang,Yanzhao Yang
The hydrogen bond interactions between TOPO and different HBDs were studied. • The maximum extraction capacity of HDES based on TOPO to Cr(VI) reached 187 mg/g. • The extraction mechanism of Cr(VI) can be inferred as ion association mechanism. • The mass transfer rate of extraction is controlled by the diffusion action. • Chromium(VI) loaded DES phase can be separated by using 0.12 mol/L Na 2 SO 3 . Efficient and environmentally friendly treatment of Cr(VI) in water is essential for enhancing aquatic ecosystems. In this work, hydrophobic deep eutectic solvents based on trioctylphosphorus oxide were used for efficient extraction and recovery of Cr(VI) from the acidic aqueous phase. By using binary phase diagram analysis and molecular dynamics simulation, the hydrogen bond interactions between hydrogen bond donors (decanoic acid, decanol and thymol) and TOPO were studied. The experimental results demonstrated that 0.1 g HDES achieved over 95% extraction efficiency from a 3.0 mL 500 mg/L Cr(VI) solution at pH = 0.5. And the maximum extraction capacity reached 187 mg/g. Furthermore, the extraction process was largely unaffected by variations in anions. Combined with the characterization of FT-IR and UV–vis, the extraction mechanism of Cr(VI) by HDES can be inferred as the ion association mechanism. Thermodynamic revealed that the extraction process is spontaneous and characterized by a decrease in endothermic entropy. Mass transfer at the interface appears to control the diffusion rate. Notably, when 0.12 mol/L Na 2 SO 3 was used as the stripping agent, the HDES maintained stable extraction performance over eight extraction-regeneration cycles. This study offers a promising strategy for the efficient, sustainable extraction of Cr(VI) using a novel green solvent. Download: Download high-res image (177KB) Download: Download full-size image
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LANGMUIR
·
2026
·
IF 4.4
Yupeng Lu,Jiaqian Sun,Lu Wang,Jinping Wang,Rui Yang,Chunling Zuo,Xiaoshuang Chen
For the goal of mitigating energy scarcity via hydrogen production from water electrolysis, the high performance, low cost transition-metal-based catalysts are essential to be designed and manufactured. In this study, we prepare chromium-doped nickel cobalt phosphide/nickel sulfide (Cr-NiCoP/Ni3S2) heterostructured hollow nanowires on conductive nickel foam through a two-step hydrothermal method coupled with low temperature phosphorization procedure. Benefiting from the remarkable electron transport capability inherent in transition metal compounds, the large specific surface area afforded by distinctive hollow nanowire architecture, and the interfacial synergistic effect of heterostructure, the as-obtained catalyst delivers low overpotentials of 67 mV for HER and 243 mV for OER at a current density of 10 mA cm–2 in alkaline electrolyte. Additionally, in an electrolytic system where the Cr-NiCoP/Ni3S2 acts as bifunctional anode and cathode materials, the 10 mA cm–2 current density can be achieved at a cell voltage of 1.47 V with good stability. This catalyst demonstrates better performance than the majority of reported transition metal based bifunction substances. The work described in this paper not only develops a new class of catalytic materials integrating application potential and expense advantage but also provides important strategic support for the fabrication and optimization of nonprecious metal electrocatalysts.
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高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 9
·e70761
·
IF 4.1
Mengdie Cai,Yulu Xu,Yao Lu,Qi Jin,Yongshuai Chen,Jia-qi Bai,Fang Chen,Zhimin Song,Song Sun
Developing efficient visible-light-driven photocatalysts for overall water splitting remains a significant challenge. Herein, Sn/Cr co-doped SrTiO 3 (SCSTO) was synthesized via a flux-assisted solid-state reaction, with Sn substituting Sr sites and Cr replacing Ti sites in the perovskite lattice. Sn/Cr synergistic co-doping extends optical absorption into the visible region, narrows the bandgap to 3.04 eV, suppresses Ti3+ defects and oxygen vacancies, and promotes charge separation and migration. Benefiting from the rational band structure and defect engineering, under visible-light irradiation (λ > 380 nm), the optimal SCSTO exhibits a hydrogen evolution rate of 15.4 µmol·h − 1 and oxygen evolution rate of 7.34 µmol·h −1 , with outstanding cycling stability. DFT calculations confirm that Cr 3d mid-gap states below the Ti 3d conduction band enhance visible-light response and charge transfer. This work provides a universal and feasible co-doping strategy for designing high-performance perovskite oxide photocatalysts toward efficient solar fuel production, which is instructive for the development of advanced visible-light-driven photocatalytic systems. Graphical A synergistic Sn/Cr dual-site co-doping strategy was developed for SrTiO 3 to enable efficient visible-light-driven overall water splitting.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
·
IF 3.9
Zequn Li,Luogang Wu,Guangcan Huang,Xuetong Cui,Zilong Chen,Qiang Chen,Jian-Rong Li
Mixed matrix membranes (MMMs) incorporating metal–organic frameworks (MOFs) are attractive for molecular recognition and separations, but precisely engineering the MOF filler structure toward maximizing its inherent nanopore separation capability remains challenging. Here, we report a fluorination strategy to functionalize MIL-101 that synergistically optimizes its pore chemical environment and interfacial compatibility with the polymer matrix. Compared with the MIL-101/6FDA-DAM membrane, the incorporation of strong electron-withdrawing fluorinated ligands enhances both the CO2 adsorption affinity of MIL-101 and its hydrogen-bonding interaction with the 6FDA-DAM matrix. The optimized MIL-101-F/6FDA-DAM (10 wt %) membrane achieves a CO2 permeability of 2200 Barrer, a 150% enhancement over the pure 6FDA-DAM membrane, while maintaining a comparable CO2/CH4 selectivity of 21. The excellent separation performance surpasses the 2008 Robeson upper bound. This work provides a simple and effective approach to advancing the gas separation performance of MMMs.
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Water
·
2025
·Vol. 17
·期 19
·2910
·
IF 3
Xinchi Zong,Tianliang Duan,Linyan Chen,Zhengwei Luo,Hui Jiang,Wenhua Geng
The escalating issue of water pollution driven by rapid industrialization necessitates the development of advanced remediation technologies. In this study, a novel method for producing chromium (Cr(VI)) ion-imprinted biochar (Cr(VI)-IIP-PEI@NBC) from wheat residue was proposed. After acid-oxidative modifications, polyethyleneimine (PEI) and glutaraldehyde (GA) were employed as the functional monomer and crosslinker, respectively, to enhance the biochar’s selectivity and adsorption capacity. Under optimized conditions (pH 2.0, 55 °C), the adsorbent achieved a maximum Cr(VI) uptake of 212.63 mg/g, which was 2.3 times higher than that of the non-imprinted biochar. The material exhibited exceptional specificity (99.64%) for Cr(VI) and maintained >80% adsorption efficiency after five regeneration cycles, demonstrating excellent reusability. Comprehensive structural characterization via Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), Brunner–Emmet–Teller measurements (BET), and Scanning Electron Microscopy (SEM) confirmed successful Cr(VI) imprinting in the biochar and its high thermal stability and mesoporous architecture, elucidating the mechanisms behind its superior performance. This study presents a sustainable and high-performance adsorbent for the efficient treatment of chromium-contaminated wastewater, with significant potential for industrial applications.
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ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Xiaozhong Zhou,Zhaoyi Qi,Yuyuan Jiang,Pengfei Yan,Juanxia Ding,Haiyan Wang,Hongkai Lu,Dongxu Liu,Kaifa Dong,Yougen Tang,Dongfei Sun,Ziqiang Lei
SiO x is regarded as a promising anode material for the next-generation lithium-ion batteries with high energy density. However, the reduplicative volume changes during cycling cause the pulverizations of Si, leading to decreased utilization of active Si component and poor cycling performance. Herein, a facile and scalable Fe-Cr decorating strategy is reported to boost the lithium storage of SiO x anode. Our comprehensive characterizations indicate that there are strong interactions between Fe-Cr and SiO x during a facile ball milling process. After cycling, Fe-Cr nanoparticles are dispersed in the in-situ formed lithium silicates and Li 2 O matrix, which can maintain superior conductivity of lithium ion and electron for the active components through point-to-point connections. This unique structure boosts the electrochemical de-alloying process of the low-valent Li x Si (0 ≤ x ≤ 2), and increases effective utilization of the active Si component during cycling, resulting in improvement of reversible capacity and cycling stability. This bm SiO x -FeCr electrode can deliver high reversible specific capacity (1370 m Ah g −1 at 200 mA g −1 ), good rate capability (653.8 m Ah g −1 at 2000 mA g −1 ), and superior cycling stability. This work provides a promising route for improving the utilization of active Si component and the structural stability of SiO x -based anodes.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
电池技术
·
固态物理
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Lezhuo Li,Shangyun Chen,Jiaxin Liu,Zhongkang Cao,Ke Wang,Xu Zhang,Bingjun Yang,Juan Yang,Tianhong Zhou,Pengjun Ma
Spinel oxides are promising electrocatalysts whose activity can be tuned by elemental composition, yet understanding multicomponent synergy remains challenging. Herein, a Spinel-type medium-entropy CoFeCrNiO 4 electrocatalyst is developed, and a Cr-Ni synergistic strategy is proposed to regulate dynamic surface reconstruction during OER. The catalyst exhibits an overpotential of 263.4 mV at 10 mA cm −2 and 365 mV at 300 mA cm −2 in 1 M KOH, with a low Tafel slope of 37.12 mV dec −1 . It also shows excellent stability, with only 2.78% overpotential decay after 24 h operation. In-situ characterization reveals that the Cr-Ni interaction promotes the formation of active oxyhydroxide species during reconstruction. This work provides insights into synergy-driven activity enhancement and offers guidance for the design of high-performance spinel OER catalysts.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2026
·
IF 3
Wenya Huo,Yike Kuang,Zhendong Sha,Jun Ding
p-Nitrophenol (p-NP) is a toxic and persistent pollutant commonly found in industrial wastewater, necessitating efficient and economically viable treatment strategies. In this work, we develop a low-cost and high-performance catalyst consisting of Fe-Cu-Cr mixed metal oxides supported on activated carbon (AC), synthesized through a simple impregnation-calcination method and applied for peroxymonosulfate (PMS) activation.Systematic optimization of preparation parameters revealed that HCl pretreatment of activated carbon, a ternary Fe-Cu-Cr composition, a 20 wt% metal loading, and calcination at 600 °C yield the highest catalytic activity, achieving p-NP degradation with Ct/C₀ ≈ 0.25 after 4 h. Notably, the total treatment cost can be maintained below 30 CNY per ton of wastewater, demonstrating a substantial economic advantage over reported catalytic systems. Mechanistic studies show that p-NP degradation follows a synergistic adsorption-catalysis pathway, wherein activated carbon enriches p-NP at the catalyst surface and multivalent metal oxides efficiently activate PMS to generate reactive oxygen species, primarily •OH. This work introduces a practical, scalable, and cost-effective catalyst design using earth-abundant metals, offering a promising avenue
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FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Jie Xu,Xiaowei Liu,Rui Li,Boxiong Shen,Zijian Zhou,Lidan Deng,Lei Liu,Xinbo Zhu
Converting CO 2 into renewable fuel via photocatalysis is of significance to solving the energy crisis and climate change. However, the limited electron transfer in single catalysts always limits the reduction reaction. In this work, a p-n heterojunction was constructed between Cr doped MgAl–LDH (abbreviated as LDH) and Co 3 O 4 for visible-light-driven fuel production. Since LDH and Co 3 O 4 both have the sufficient potentials to drive CO 2 photoreduction, the constructed type-II heterojunction is more favorable for electron utilization efficiency. The optimal Co 3 O 4 /LDH heterojunction exhibited the highest CO evolution rate of 7.42 μmol•g −1 •h −1 and a CO selectivity of 90.5% with TEOA as sacrificial agent . The further characterizations highlight that the addition of Co 3 O 4 greatly improves the light absorption and the heterojunction effectively promotes the reverse migration of electrons and holes. This work investigates and verifies the designed type-II heterojunction based on MgAl–LDH, which has the guidance for the design of heterojunction catalysts and promotes the practical application of MgAl–LDH in photocatalytic region.
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RSC Advances
·
2022
·Vol. 12
·期 54
·35064-35071
·
IF 4.036
Ailijiang Tuerdi,Peng Yan,Fenggui He,Abdukader Abdukayum
The development of new photocatalysts with high photocatalytic efficiency and catalytic stability, and long persisting luminescence is critical for ensuring environmental protection and clean energy production. In this study, we develop a flower-like In2O3/ZnGa2O4:Cr heterojunction composite with enhanced ultraviolet (UV) photocatalytic activity using a facile two-step hydrothermal method. The spectral response range of the heterojunction composite is widened to the visible-light range owing to the presence of the ZnGa2O4:Cr persistent luminescence nanoparticles with sizes of less than 10 nm. The heterojunction composite is dispersed on the flower petals of In2O3. The In2O3/ZnGa2O4:Cr/1:1 composite exhibits photo-degradation performance for rhodamine B degradation that is superior to those of pure In2O3, ZnGa2O4:Cr, In2O3/ZnGa2O4:Cr/1:0.5 and In2O3/ZnGa2O4:Cr/1:2, achieving complete degradation after 80 min under UV light irradiation. Moreover, it exhibits long afterglow luminescence that lasts for more than 72 h. Thus, the In2O3/ZnGa2O4:Cr/1:1 composite shows great potential for use in round-the-clock photocatalytic applications.
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