New Journal of Chemistry最新文献

{"title":"Enhancement of the electrochemical performance of Sm-doped cobalt-free LiNi0.55Mn0.45O2 cathodes","authors":"Tiantian Wang, Lei Ni, Xu Sun, Hejie Lu, Haiqiang Li, Maosen Fu and Xiao Ma","doi":"10.1039/D5NJ01275A","DOIUrl":"https://doi.org/10.1039/D5NJ01275A","url":null,"abstract":"<p >Co-free binary cathode materials (LiNi<small>_<em>x</em></small>Mn<small>_{1−<em>x</em>}</small>O<small>₂</small>, <em>x</em> ≥ 0.5) are promising candidates for lithium-ion batteries (LIBs) due to their high specific capacity and low cost. The degradation of the low-temperature electrochemical performance of these materials not only hinders their practical application but also emerges as a critical research focus in energy storage technologies. In this work, the effect of Sm doping on the structure and electrochemical performance of LiNi<small>_0.55</small>Mn<small>_0.45</small>O<small>₂</small> (NM5545) cathode materials (<em>x</em>% Sm-NM5545, <em>x</em> = 0, 0.5, 1.0, 1.5) is systematically investigated over a wide temperature range (−10 to 45 °C). Sm doping significantly enhances the structural stability and enlarges interlayer spacing, which likely facilitates Li<small>⁺</small> transport. Compared with undoped NM5545, the 1.0% Sm-NM5545 cathode materials exhibit remarkable improvements in capacity retention, which increases by 14.1%, 8.0%, and 9.4% after 100 cycles at temperatures of −10 °C, 25 °C, and 45 °C (1.0C, 3.0–4.45 V), respectively. Meanwhile, the discharge-specific capacity of 1.0% Sm-NM5545 cathode materials increases by 7.9 mA h g<small>⁻¹</small>, 9.1 mA h g<small>⁻¹</small>, and 12.9 mA h g<small>⁻¹</small> at the above respective temperatures. Electrochemical impedance spectroscopy and galvanostatic intermittent titration technique analyses confirm that Sm doping has enhanced the lithium-ion migration rate while reducing the charge transfer resistance in the modified materials. Furthermore, post-cycling characterization <em>via</em> scanning electron microscopy and X-ray photoelectron spectroscopy reveals that Sm doping effectively reinforces the structural integrity, suppresses crack propagation during high voltage cycling, and inhibits detrimental cathode–electrolyte interfacial reactions.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8752-8759"},"PeriodicalIF":2.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly sensitive and quantitative detection of phosphate ions in aqueous solutions using a tricolor fluorescent probe based on bimetallic organic framework nanomaterials†","authors":"Chen Wang, Xiaohong Wang, Wenheng Li, Xiangyong Gu, Wei Ma, Jing Fan, Kun Zhai and Dongshan Xiang","doi":"10.1039/D5NJ00701A","DOIUrl":"https://doi.org/10.1039/D5NJ00701A","url":null,"abstract":"<p >Excessive phosphate content in water can lead to eutrophication, causing massive algal growth and severely damaging aquatic ecosystems. Therefore, developing a simple and sensitive method for detecting phosphate ions is of great significance. In this study, we constructed a tricolor fluorescence probe based on bimetallic organic framework nanomaterials containing copper and zirconium (Cu/Uio-66) and single-stranded DNA of arbitrary sequences labeled with three different fluorescent dyes. A novel, highly sensitive quantitative method for the detection of phosphate ions (PO<small>₄</small><small>³⁻</small>) was developed. In the absence of PO<small>₄</small><small>³⁻</small>, dye-labeled DNA is adsorbed on the surface of Cu/Uio-66, and its fluorescence is quenched <em>via</em> a photoinduced electron transfer (PET) mechanism, resulting in a weak fluorescence signal. PO<small>₄</small><small>³⁻</small> reacts with Zr<small>⁴⁺</small> and Cu<small>²⁺</small> to form copper phosphate and zirconium phosphate, leading to the dissociation of Cu<small>²⁺</small> and Zr<small>⁴⁺</small> from Cu/Uio-66, then causing the disintegration of Cu/Uio-66. Dye-labeled DNA dissociates from the surface of Cu/Uio-66 and enters the solution, and the fluorescence of the dye is restored. The optimal conditions for detecting PO<small>₄</small><small>³⁻</small> using this probe are as follows: a reaction time of 40 minutes, a reaction temperature of 30 °C, a buffer system pH of 7.7, and a NaCl concentration of 30 mmol L<small>⁻¹</small> in the buffer system. Within the concentration range of 1.20–150 nmol L<small>⁻¹</small>, the total fluorescence intensity of the three dyes FAM, TAMRA, and Cy-5 exhibited a strong linear relationship with PO<small>₄</small><small>³⁻</small> concentration. The linear regression equation fitted between fluorescence intensity (<em>F</em>) and PO<small>₄</small><small>³⁻</small> concentration (<em>x</em>) is as follows: <em>F</em> = 29.1684<em>x</em> + 215.9763 (<em>R</em><small>²</small> = 0.9996), and the detection limit is 0.71 nmol L<small>⁻¹</small> (<em>n</em> = 9, 3<em>σ</em>). This method has excellent selectivity, with sample recovery rates ranging from 97% to 103%, and it can be used for the detection of PO<small>₄</small><small>³⁻</small> in real water samples.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8760-8768"},"PeriodicalIF":2.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced corrosion resistance of silicone resin: grafting nano-TiO2 onto graphene oxide via thiol–ene click chemistry†","authors":"Ya-Zhao Gao, Imran Muhammad, Chun-Mei Zha, Tie-Zhen Ren, Guan Zhang, Zhi-Jun Ren, Jin-Shan Yan and Xue-Jun Zhang","doi":"10.1039/D5NJ00855G","DOIUrl":"https://doi.org/10.1039/D5NJ00855G","url":null,"abstract":"<p >High-temperature corrosion is a major factor contributing to the degradation of industrial components, and composite coatings are one of the effective solutions to this issue. To solve this problem, we design an innovative strategy that utilizes thiol–ene click chemistry to graft nano titanium dioxide (TiO<small>₂</small>) onto graphene oxide (GO), forming a composite coating with methyl phenyl silicone resin. This method significantly enhances the thermal stability, corrosion resistance, and self-cleaning properties of the coating. Detailed characterization using SEM, TEM, FTIR, and XRD confirmed the successful covalent bonding of TiO<small>₂</small> with GO, resulting in a composite coating with excellent structural stability. The modification markedly enhances the dispersion and interfacial compatibility of GO-TiO<small>₂</small> within the silicone resin matrix, leading to superior mechanical integrity. Electrochemical analysis reveals that GO-TiO<small>₂</small> extends corrosion pathways and reduces ion permeation, significantly boosting the corrosion resistance of the resin. Notably, the incorporation of just 0.2 wt% GO-TiO<small>₂</small> results in a significant enhancement of the coating thermal stability and its resistance to degradation in high-temperature corrosive environments, while also imparting superior self-cleaning properties. This efficient grafting method offers a transformative framework for developing next-generation nanocomposite coatings with heightened resilience for extreme operational settings.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8707-8718"},"PeriodicalIF":2.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced peroxymonosulfate activation via La0.9Ba0.1Co0.5Ni0.5O3 with a near-infrared photothermal effect for antibiotics degradation†","authors":"Liqing Dong, Wei Xiong, Liang Zhou, Juying Lei, Jinlong Zhang, Yongdi Liu, Thi Kim Quyen Vo and Tan Phong Nguyen","doi":"10.1039/D5NJ00459D","DOIUrl":"https://doi.org/10.1039/D5NJ00459D","url":null,"abstract":"<p >Nowadays, the efficient degradation of antibiotics, as a class of environmentally persistent organic pollutants (POPs), is still a worldwide challenge. In this paper, we innovatively explored the application of photothermal heterogeneous Fenton-like systems for peroxymonosulfate (PMS) activation to degrade antibiotics under near-infrared (NIR) irradiation. A series of novel perovskite-based photothermal catalysts (La<small>_{1−<em>x</em>}</small>Ba<small>_<em>x</em></small>Co<small>_{1−<em>y</em>}</small>Ni<small>_<em>y</em></small>O<small>₃</small>) were designed and prepared, and their optimal metal doping ratios (<em>x</em> &lt; 0.2, <em>y</em> = 0.5) were determined experimentally. Taking the La<small>_0.9</small>Ba<small>_0.1</small>Co<small>_0.5</small>Ni<small>_0.5</small>O<small>₃</small> as an example, the doping of metal ions significantly enhanced its NIR absorption and photothermal conversion. The enhanced photothermal effect realized the synergy between the thermal effect and catalytic activation, which improved the PMS activation efficiency of the La<small>_0.9</small>Ba<small>_0.1</small>Co<small>_0.5</small>Ni<small>_0.5</small>O<small>₃</small> + PMS + NIR system and facilitated the efficient degradation of antibiotic pollutants (the degradation efficiency could be up to 99% in 10 min). Meanwhile, the Co and Ni bimetallic ion cycling system constructed by La<small>_0.9</small>Ba<small>_0.1</small>Co<small>_0.5</small>Ni<small>_0.5</small>O<small>₃</small> also promoted a significant increase in PMS activation efficiency. In addition, the large specific surface area and abundant mesoporous structure of La<small>_{1−<em>x</em>}</small>Ba<small>_<em>x</em></small>Co<small>_{1−<em>y</em>}</small>Ni<small>_<em>y</em></small>O<small>₃</small> prepared by the sol–gel method were also important driving forces for activation of PMS. La<small>_0.9</small>Ba<small>_0.1</small>Co<small>_0.5</small>Ni<small>_0.5</small>O<small>₃</small> exhibited excellent PMS activation performance along with satisfactory stability and adaptability to a wide range of complex water bodies.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8686-8695"},"PeriodicalIF":2.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption of low-concentration perfluorooctanoic acid on corn stover-based lignin amine by synergy of electrostatic and hydrophobic interactions†","authors":"Baoyuan Shi, Jun Dong, Yunhao Li, Weihong Zhang and Yongxin Li","doi":"10.1039/D5NJ00678C","DOIUrl":"https://doi.org/10.1039/D5NJ00678C","url":null,"abstract":"<p >Perfluorooctanoic acid (PFOA) has received widespread attention due to its potential carcinogenic toxicity, bioaccumulation and high environmental persistence. However, there has been insufficient attention paid to the contamination of groundwater with PFOA at the level of micrograms per liter near the primary-source sites. This study used corn stover-based lignin as a raw material to prepare a new biomass adsorbent named corn stover-based lignin amine (CSLA) using the Mannich reaction for the removal of low-concentration PFOA at the level of micrograms per liter from groundwater. The CSLA exhibited excellent adsorbability with removal rates for 250, 500, and 1000 μg L<small>⁻¹</small> PFOA reaching 99.03%, 99.31%, and 98.45%, respectively, at 293 K and pH = 6. The adsorption behavior was in line with the pseudo-second-order and Langmuir model, indicating that the adsorption of low-concentration PFOA on CSLA was monolayer adsorption and depended on chemical adsorption. The CSLA could maintain a high removal rate of low-concentration PFOA in the presence of competitive ions and humic acid. The adsorption of PFOA on CSLA showed excellent regeneration ability. After five adsorption cycles, the removal rate of PFOA still reached 94.55%. In addition, CSLA has good environmental safety and actual application potential. SEM-EDS, XPS, and FTIR suggested that electrostatic interaction, hydrophobic interaction and hydrogen bonding significantly promoted the removal of PFOA. The CSLA is obtained from cheap corn stover, enabling a broader impact on sustainability and efficient removal of low-concentration PFOA from groundwater.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8553-8563"},"PeriodicalIF":2.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-additive electrolyte enables highly reversible Zn electrochemistry†","authors":"Weimin Yuan, Chengze Li, Qianqian Ma, Hao Luo, Ximei Sun, Xiaoyi Chen, Lina Ye, Zhenjie Sun and Lingyun Zhu","doi":"10.1039/D5NJ00403A","DOIUrl":"https://doi.org/10.1039/D5NJ00403A","url":null,"abstract":"<p >Aqueous zinc-ion batteries (AZIBs) are regarded as strong competitors to lithium-ion batteries due to their inherent safety and low cost. However, parasitic side reactions and uncontrolled growth of Zn dendrites prevent their further development. Herein, we introduce a dual-additive of nicotinamide (NI) and potassium acetate (KOAc) into Zn(OTF)<small>₂</small> electrolyte. The three zincophilic sites (amino, carbonyl and pyridine) of NI can combine with Zn<small>²⁺</small> to alter the solvated structure of [Zn(H<small>₂</small>O)<small>₆</small>]<small>²⁺</small>, act as hydrogen bond donors/acceptors to form a new hydrogen bond network with H<small>₂</small>O, and adsorb onto the Zn anode surface to promote the redistribution of Zn<small>²⁺</small> and regulate the charge distribution, thus reducing the activity of the H<small>₂</small>O molecule, inhibiting H<small>₂</small>O-related side reactions and guiding homogeneous deposition of Zn. Meanwhile, KOAc acts as a pH buffer to stabilize the pH of the electrolyte system during electrochemical processes, preventing the corrosion reaction. Moreover, K<small>⁺</small> tends to adsorb onto the surface of protrusions and form an electrostatic shield, which can induce oriented deposition of Zn and suppress Zn dendrite formation. With the assistance of the synergistic effect of the dual-additive, the Zn//Zn cells demonstrate stable cycling for over 1600 h at 1 mA cm<small>⁻²</small> and 1 mA h cm<small>⁻²</small> and for 820 h at 5 mA cm<small>⁻²</small> and 5 mA h cm<small>⁻²</small>, which are nearly 22 and 29 times that of the pure Zn(OTF)<small>₂</small> electrolyte. Moreover, Zn//Cu asymmetric cells deliver highly reversible Zn plating/stripping with a high and stable coulombic efficiency of 99.4%, and Zn//I<small>₂</small> full cells exhibit excellent cycle stability (95.4% capacity retention after 4000 cycles). Even at a low temperature of −10 °C, Zn//Zn cells still survive up to 750 h at 5 mA cm<small>⁻²</small> and 5 mA h cm<small>⁻²</small>.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8502-8511"},"PeriodicalIF":2.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile one-pot synthesis of tartaric acid-doped polyindole with antibacterial and antibiofilm activities against ESKAPE pathogens†","authors":"Sresha Sarkar, Adrija Ghosh, Subhajit Ghosh, Koushik Dutta, Arghya Adhikary and Dipankar Chattopadhyay","doi":"10.1039/D5NJ00414D","DOIUrl":"https://doi.org/10.1039/D5NJ00414D","url":null,"abstract":"<p >The pathology of bacterial infections exhibits a considerable rate of mortality. Nanostructured materials have shown significant efficacy in the mitigation of bacterial infections. In this context, tartaric acid-doped polyindole (PIN–TA) was synthesized. Scanning electron microscopy (SEM) and dynamic light scattering (DLS) were used to study the morphology of the nanostructured polymeric materials, whereas Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses validated the interaction of tartaric acid with polyindole (PIN–TA). This material demonstrated a notable zone of inhibition against <em>Escherichia coli</em>, <em>Staphylococcus aureus</em>, <em>Klebsiella pneumoniae</em>, <em>Acinetobacter baumannii</em>, and <em>Pseudomonas aeruginosa</em>. This finding was further corroborated by live/dead staining assays. Treatment of ESKAPE pathogens with PIN–TA elicited significant alterations in their morphology, as evidenced by SEM imaging. Furthermore, it showed the ability to inhibit the development of a biofilm by these bacterial strains, as substantiated by numerous concurrent experimental investigations. The biocompatibility of the material was confirmed by the MTT assay conducted against Wi-38 cells. Therefore, this research delineates a straightforward and cost-effective single-step methodology for the synthesis of an organic acid-doped conducting polymer, which exhibits multifaceted applications, like as an antibacterial coating on medical devices, hand gloves, surgical blades, catheters, syringes, scissors, <em>etc.</em></p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8564-8575"},"PeriodicalIF":2.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile preparation of water-soluble titanium citrate with highly efficient quasi-homogeneous photocatalytic reduction of Cr(vi)†","authors":"Runfeng Huang, Daorong Li, Yifan Li, Ying Tian, Chenran Fan, Ruixi Chen, Hongxia Chen, Kunfeng Zhang and Liangbo Zhang","doi":"10.1039/D4NJ05454G","DOIUrl":"https://doi.org/10.1039/D4NJ05454G","url":null,"abstract":"<p >A titanium citrate photocatalyst with high photocatalytic activity was prepared using the gel method. It exhibited complete water solubility, maintained stability without gelation or precipitation over a short period, and allowed photocatalysis under quasi-uniform conditions. The structural properties of titanium citrate were analyzed through various characterization techniques, including single-crystal X-ray diffraction (XRD), <small>¹</small>H, <small>¹³</small>C nuclear magnetic resonance, and Raman spectroscopy. The single-crystal XRD data revealed the molecular structure of titanium citrate as Ti<small>₈</small>O<small>₁₀</small>(C<small>₆</small>H<small>₅</small>O<small>₇</small>)<small>₄</small>–(H<small>₂</small>O)<small>₁₂</small>·H<small>₂</small>O and the internal structure as Ti<small>₈</small>O<small>₁₀</small>. The photocatalytic performance was assessed using Cr(<small>VI</small>) as the target pollutant, evaluating parameters such as catalyst loading (0.4–1.6 g L<small>⁻¹</small>), initial concentration (20–150 mg L<small>⁻¹</small>), pH (2–6), and the influence of anions. At a catalyst dosage of 0.6 g L<small>⁻¹</small>, the reduction rate of 100 mg L<small>⁻¹</small> Cr(<small>VI</small>) reached 100% within 40 min of light illumination. Active species trapping and free radical detection demonstrated that photogenerated electrons (e<small>⁻</small>) and •O<small>₂</small><small>⁻</small> primarily facilitated the Cr(<small>VI</small>) reduction process. Multiple pathways were studied for the reduction of Cr(<small>VI</small>). This study provides a novel approach for designing efficient and quasi-homogeneous photocatalytic reduction systems for Cr(<small>VI</small>) removal in future research.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8914-8922"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MoS2/NixSy/NF heterojunction catalyst for efficient oxygen evolution reaction†","authors":"Ting Xie, Jicheng Wu, Zhanpeng Han, Dandan Wu and Guojian Jiang","doi":"10.1039/D5NJ00971E","DOIUrl":"https://doi.org/10.1039/D5NJ00971E","url":null,"abstract":"<p >The development of highly efficient and stable non-noble metal catalysts is crucial for advancing the oxygen evolution reaction (OER). In this study, a flower-branch-like MoS<small>₂</small>/Ni<small>_<em>x</em></small>S<small>_<em>y</em></small>/NF heterostructure was synthesized using a one-step hydrothermal method as an effective OER electrocatalyst. X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM) confirmed the formation of a heterojunction and nickel's shift to a higher oxidation state. The heterojunction enhanced electronic interactions, enriched active sites, and facilitated electron transfer, while Ni<small>³⁺</small> promoted OH<small>⁻</small> adsorption, boosting OER kinetics. Interfacial charge transfer from Ni<small>_<em>x</em></small>S<small>_<em>y</em></small> to MoS<small>₂</small> activates the inert basal planes of MoS<small>₂</small>, enhancing intermediate adsorption. The Ni<small>₃</small>S<small>₂</small>/NiS heterointerface optimizes OER intermediate adsorption energy, significantly improving catalytic activity. This unique structure provides abundant active sites (<em>C</em><small>_dl</small> = 75.6 mF cm<small>⁻²</small>), enhances charge transfer (<em>R</em><small>_ct</small> = 2.3 Ω), and reduces the water dissociation barrier, leading to an exceptional Tafel slope of 61 mV dec<small>⁻¹</small> that outperforms those of single-phase catalysts. Additionally, SO<small>₄</small><small>²⁻</small> leaching during the OER may aid the conversion of nickel sulfide to the NiOOH species, further improving performance. The MoS<small>₂</small>/Ni<small>_<em>x</em></small>S<small>_<em>y</em></small>/NF catalyst showed a low overpotential of 150 mV at 10 mA cm<small>⁻²</small>, indicating excellent activity. It also demonstrated remarkable stability, with negligible decay after 50 hours under alkaline and simulated seawater conditions. This work underscores the importance and the key role of heterojunctions in enhancing electrocatalytic performance for the OER, and offers new insights for designing high-performance OER electrocatalysts.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 21","pages":" 8732-8742"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An investigation into the synergistic enhancement of MIBK for lithium extraction utilizing the TBP–FeCl3 system from spent LiFePO4 powder","authors":"Haiyu Wang, Xiangyun Qiu, Zhenhua Feng, Xinyu Li and Tao Wei","doi":"10.1039/D5NJ00535C","DOIUrl":"https://doi.org/10.1039/D5NJ00535C","url":null,"abstract":"<p >In the field of lithium-ion battery (LIB) recycling, solvent extraction has emerged as a research hotspot due to its numerous advantages such as room-temperature operation, environmental protection and low energy consumption; however, the relatively low single extraction efficiency remains a considerable challenge for its large-scale application. In this study, we employ an optimized extraction system utilizing methyl isobutyl ketone (MIBK) as a synergist with tributyl phosphate (TBP)–FeCl<small>₃</small> to simultaneously extract lithium and iron from the leaching solution of spent LiFePO<small>₄</small> powder. This method achieves a secondary extraction rate of lithium as high as 97.6%. Additionally, FTIR spectroscopy analysis reveals notable changes in the chemical bonds P<img>O, C<img>O, and P–O–C, as well as shifts in the characteristic peak of the –CH<small>₃</small>– functional group before and after extraction. Ultraviolet spectroscopy further confirms that the lithium ions in the aqueous phase transfer to the organic phase in the form of the LiFeCl<small>₄</small> complex, indicating that the extracted complex has the structure of LiFeCl<small>₄</small>·3.38TBP·0.72MIBK. Finally, based on recycled materials, a high-performance LiFePO<small>₄</small>/C material is synthesized <em>via</em> a simple solid-phase method, achieving a closed-loop process. This investigation provides new insights and valuable references for the recycling of LFP from spent lithium batteries.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":" 20","pages":" 8376-8383"},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}