Inorganic Chemistry Frontiers最新文献_第10页

The hydrolytic stability of the human tubulin α 1A protein fragment – a potential reason for the role of metal ions in the development of neurodegenerative diseases

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-05 DOI: 10.1039/d4qi03271c

Balázs Sándor, Ágnes Grenács, Gergő Zoltán Sajtos, Giuseppina Sabatino, Giuseppe Di Natale, Giuseppe Pappalardo, Katalin Várnagy

{"title":"The hydrolytic stability of the human tubulin α 1A protein fragment – a potential reason for the role of metal ions in the development of neurodegenerative diseases","authors":"Balázs Sándor, Ágnes Grenács, Gergő Zoltán Sajtos, Giuseppina Sabatino, Giuseppe Di Natale, Giuseppe Pappalardo, Katalin Várnagy","doi":"10.1039/d4qi03271c","DOIUrl":"https://doi.org/10.1039/d4qi03271c","url":null,"abstract":"Alpha tubulin proteins are recognised as a key component in the process of cell division, due to their role in dimerisation and polymerisation, which results the formation of microtubules in eukaryotes, however in the context of Alzheimer's disease (AD) and other neurodegenerative diseases (ND), it may also play an important role, as alterations in their structure and disintegration have been observed. The present paper investigates the 189-195 region of the human tubulin α 1A protein, in the presence of essential copper(II), zinc(II) and the toxic nickel(II) metal ions. The aforementioned natural protein fragment contains the –(S/T)XH– amino acid motif, which sequences were previously identified as the active sites of a metal-ion-induced, sequence-specific hydrolysis process. The solution equilibrium studies (pH-potentiometry, UV-Vis- and CD spectroscopy) demonstrated that the metal complexes formed under the physiological pH conditions exhibit enhanced thermodynamic stability. The RP-HPLC and MS studies confirmed the irreversible behaviour of the heptapeptide, due to the formation of the intermediate and final products of the hydrolytic reaction, which were induced by the nickel(II) and copper(II) metal ions. In the presence of nickel(II) ions under conditions of pH 8.2 and temperature 37 °C, the kinetic parameters of the reaction were determined. The half-life value for the formation of the intermediate product were found to be 3.70 hours, while for the formation of the final product was 73.75 hours.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"2 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143545905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Work function and d-band center dual-modulation in hollow Ru-ZIF-8-derived Ru0-RuO2-ZnO heterointerfaces for boosted electrochemical hydrogen evolution

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-05 DOI: 10.1039/d4qi03353a

Xiaoxin Xu, Ruidong Shi, Yuanting Li, Xue Wang, Gongbing Zhou

{"title":"Work function and d-band center dual-modulation in hollow Ru-ZIF-8-derived Ru0-RuO2-ZnO heterointerfaces for boosted electrochemical hydrogen evolution","authors":"Xiaoxin Xu, Ruidong Shi, Yuanting Li, Xue Wang, Gongbing Zhou","doi":"10.1039/d4qi03353a","DOIUrl":"https://doi.org/10.1039/d4qi03353a","url":null,"abstract":"To enhance the kinetics of the electrochemical hydrogen evolution reaction (HER) in alkaline electrolytes, metallic Ru (Ru0)-RuO2-ZnO heterointerfaces are constructed by pyrolyzing hollow Ru-ZIF-8 nanostructures with varying shapes. Systematic characterizations and theoretical simulations reveal that the exposed facets and oxygen vacancy (Ov) contents of the heterointerfaces depend on the shape and pyrolysis temperature of Ru-ZIF-8. Rhombic dodecahedral Ru-ZIF-8-derived nanocrystals by pyrolyzing at 900°C expose Ru0{1-20}-RuO2{-221}-ZnO{001} heterointerfaces with suitable Ov content, resulting in an alleviated work function and a downshifted d-band center (εd). These structural optimizations accelerate H2O adsorption-dissociation on the nanocrystal surface, weaken the excessively strong electronic interaction between the catalytic surface and the H* intermediate, balance the strengths of H* adsorption and H2 desorption, facilitate the rate-determining stage (RDS, H2 desorption), and ultimately lower the apparent activation energy for HER. As a result, an overpotential of 25.0 mV at 10 mA cm-2 and a turnover frequency of H2 generation of 0.23 s-1 at 100 mV are achieved, surpassing other heterostructure analogues. An excellent linearity between the HER overpotentials and the Gibbs free energy change of H* adsorption is substantiated, highlighting the advantage of d-orbital manipulation in expediting activity.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"35 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143545906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning Photochromism and Photomagnetism via Diverse Bimetal-cyanido Viologen Hybrid Materials

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d4qi03115f

Xinxin Jin, Zhen Shao, Pengxiang Fu, Yifan Deng, Qi Sui, Yi-Han Wang, Jin Xiong, Bingwu Wang, Zheming Wang, Song Gao

{"title":"Tuning Photochromism and Photomagnetism via Diverse Bimetal-cyanido Viologen Hybrid Materials","authors":"Xinxin Jin, Zhen Shao, Pengxiang Fu, Yifan Deng, Qi Sui, Yi-Han Wang, Jin Xiong, Bingwu Wang, Zheming Wang, Song Gao","doi":"10.1039/d4qi03115f","DOIUrl":"https://doi.org/10.1039/d4qi03115f","url":null,"abstract":"The integration of photochromism and photomagnetism is of great significance for developing photo-responsive multifunctional materials. Herein, we successfully synthesized four cyanido-bridged bimetallic frameworks formulated as (MVII)0.5[MIIIMII(CN)6]·(H2O)n (i.e., FeMn, FeZn, CrMn, CrZn; MVII = 1,1'-dimethyl-4,4'-bipyridine dication; MIII = FeIII, CrIII; MII = MnII, ZnII), by incorporating diverse polycyanidometallates and viologen moieties into the donor-acceptor (D-A) hybrid molecular-based materials. FeZn and CrZn both exhibit visible photoinduced electron transfer (PET) processes upon Xe lamp irradiation at room temperature. However, while CrZn undergoes a reversible photochromism, FeZn displays irreversible photochromism, which originates not only from photoinduced radicals but also from Fe reduction. Interestingly, the change in absorption band of FeZn spans the UV-visible-near infrared (UV-Vis-NIR) region (ca. 200-2600 nm) after irradiation. Although FeMn and CrMn do not exhibit photoinduced colour changes, they behave as two-dimensional (2D) and three-dimensional (3D) ferrimagnets, respectively, with CrMn exhibiting long-range ordering below ca. 80 K. FeZn exhibits photomagnetic behaviors upon irradiation due to the magnetic interactions between photoinduced viologen radicals and low-spin (LS) FeIII ions. Additionally, we investigate the remarkable influence of metal ions on photochromism and (photo)magnetism through detailed crystal structure analysis. This work provides a novel approach to photo-responsive multifunctional materials using cyanidometallic viologen hybrid compounds.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"7 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143539074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-functional RhNi nanocubes for coupling electrocatalytic water reduction and alcohol oxidation for energy-saving hydrogen production

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d5qi00011d

Hui-Zi Huang, Di Liu, Zhejiaji Zhu, Wenjing Tian, Li-Wei Chen, Jiani Li, An-Xiang Yin

{"title":"Dual-functional RhNi nanocubes for coupling electrocatalytic water reduction and alcohol oxidation for energy-saving hydrogen production","authors":"Hui-Zi Huang, Di Liu, Zhejiaji Zhu, Wenjing Tian, Li-Wei Chen, Jiani Li, An-Xiang Yin","doi":"10.1039/d5qi00011d","DOIUrl":"https://doi.org/10.1039/d5qi00011d","url":null,"abstract":"Electrochemical water splitting holds promise for sustainable hydrogen (H2) production, yet it faces the challenge of high energy demand due to significant overpotentials and sluggish kinetics for the anodic oxygen evolution reaction (OER). An efficient alternative is to replace the energy-intensive OER with the more thermodynamically advantageous alcohol oxidation reaction (AOR). Accordingly, catalysts that enhance both the hydrogen evolution reaction (HER) and the AOR may pave the way for sustainable and efficient hydrogen production. Herein, we demonstrate that the composition and morphology engineering of Rh–Ni alloy nanocrystals can significantly boost their dual functionality for the HER and the ethanol oxidation reaction (EOR). Theoretical and experimental analyses reveal the enhanced H2O dissociation, alcohol oxidation capacity, and CO tolerance of RhNi NCs with predominant {100} facets. As a result, a two-electrode electrolysis cell using RhNi NCs as dual-functional catalysts for the HER||EOR can achieve a current density of 10 mA cm−2 and 50 mA cm−2 at 0.53 V and 0.68 V, respectively, outperforming the Pt/C and IrO2 benchmark catalysts. Remarkably, the RhNi NCs can also catalyze the oxidation of a range of alcohols for energy-saving H2 production at low cell voltages. Our strategy represents a rational catalyst design achieved through controlled solution synthesis, holding potential for broader applicability in future electrocatalysis and clean energy conversion.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"53 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143539075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achieving red-light anticancer photodynamic therapy under hypoxia using Ir(III)-COUPY conjugates

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d4qi03369h

Enrique Ortega-Forte, Anna Rovira, Pezhman Ashoo, Eduardo Izquierdo-García, Cormac Hally, Diego Abad-Montero, Mireira Jordà-Redondo, Gloria Vigueras, Alba Deyà, Jose Luis Hernandez, Jorge Galino, Manel Bosch, Marta Erminia Alberto, Antonio Francés-Monerris, Santi Nonell, Jose Ruiz, Vicente Marchan

{"title":"Achieving red-light anticancer photodynamic therapy under hypoxia using Ir(III)-COUPY conjugates","authors":"Enrique Ortega-Forte, Anna Rovira, Pezhman Ashoo, Eduardo Izquierdo-García, Cormac Hally, Diego Abad-Montero, Mireira Jordà-Redondo, Gloria Vigueras, Alba Deyà, Jose Luis Hernandez, Jorge Galino, Manel Bosch, Marta Erminia Alberto, Antonio Francés-Monerris, Santi Nonell, Jose Ruiz, Vicente Marchan","doi":"10.1039/d4qi03369h","DOIUrl":"https://doi.org/10.1039/d4qi03369h","url":null,"abstract":"Despite the potential of photodynamic therapy (PDT), this oxygen-dependent oncological treatment is greatly restricted in the clinic by the well-known hypoxic feature of solid tumors. Here we provide new insights on the development of PDT agents based on conjugates between COUPY fluorophores and cyclometalated iridium(III) complexes with the aim of overcoming this limitation. The structural modifications carried out within the metal core of Ir(III)-COUPY conjugates, based on the incorporation of trifluorobenzyl groups at the cyclometalating ligands, allowed efficient explotation of Type I PDT mechanisms while retaining operativity at long-wavelength visible light, which facilitates deeper tissue penetration compared with short wavelengths. Photobiological evaluation revealed that Ir(III)‑COUPY conjugate 3c achieved potent photocytotoxicity towards cisplatin-resistant ovarian (A2780cis) and mammary (EO771) cancer cell lines, efficiently photogenerated Type I and Type II ROS and photoinduced apoptotic cell death using red light irradiation (620 nm). Importantly, this Ir(III)-COUPY conjugate retained such potent photoactivity under low-oxygen environment conditions (2% O2), delivering equipotent photocytotoxicity towards normoxic and hypoxic adherent cancer cells. Compound 3c was found highly phototoxic against EO771 multicellular tumor spheroids and showed no signs of toxicity or adverse effects in mice, which could facilitate in vivo phototherapeutic applications. Taken together, this study demonstrated that the conjugation between COUPY dyes and rationally-designed Ir(III) complexes represents a frontier strategy for the development of new red light‑activated photosensitizers capable of operating under hypoxia, holding promise to achieve satisfactory anticancer PDT effects.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"28 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Encapsulation of toxic liquid molecules and adsorption of water pollutants by a versatile pre-organized single crystalline coating material 一种多功能预组织单晶涂层材料对有毒液体分子的封装和对水污染物的吸附

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d4qi02919d

Weiping Huang, Jin chang Liu, Feng Wang, Wei Xu, Zi-Meng Tao, David Middleton, Cheng-Dong Liu, Shu-Qin Qin, Wen-Cai Ye, Ren-Wang Jiang

{"title":"Encapsulation of toxic liquid molecules and adsorption of water pollutants by a versatile pre-organized single crystalline coating material","authors":"Weiping Huang, Jin chang Liu, Feng Wang, Wei Xu, Zi-Meng Tao, David Middleton, Cheng-Dong Liu, Shu-Qin Qin, Wen-Cai Ye, Ren-Wang Jiang","doi":"10.1039/d4qi02919d","DOIUrl":"https://doi.org/10.1039/d4qi02919d","url":null,"abstract":"Liquid water is essential for life, but many other substances that exist in the liquid state under standard conditions can have severe detrimental effects on living organisms and the environment. Isolation of these substances and determination of their three-dimensional structures are important to understand and, ultimately, to eliminate their harmful effects. Unfortunately, the mobility and disorder inherent in liquid molecules presents major challenges for their structure elucidation. Consequently, very few structures of liquid molecules have been determined with certainty. Here, a hexazirconium-based MOF [ZrFMOF, Zr6(μ3-O)8(COO)8(H2O)8(DEF)7] was synthesized and shown to act as a host framework to capture and facilitate the crystal structure determination of a series of liquid molecules. In this respect, ZrFMOF serves as robust pre-organized single crystalline coating (PSCC) on the target guest. ZrFMOF successfully encapsulated 12 toxic liquid molecules through weak interactions within two binding cavities (A and B), enabling accurate structural determination of individual guest molecules, two mixtures and an unknown liquid, all without the need of activation. Three distinct binding modes were identified, involving cavities A, B and A and B together. Furthermore, ZrFMOF showed excellent adsorption capacities on iodine, various dyes and polyfluoroalkyl substances (PFAS), which was confirmed by solid state NMR. Especially, ZrFMOF was so far the strongest absorbent on PFAS (absorption capacity 1.23 mg/mg). In summary, it is demonstrated for the first time that ZrFMOF is a versatile PSCC material that can be used to sequester and identify a range of toxic liquid molecules, and remove three kinds of pollutants (iodine, dyes and PFAS) in water.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"32 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143539072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural diversity and photocurrent responses of multi-component chalcogenidometalates

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d5qi00110b

Chang Liu, Wenjing Tian, Mao-Yin Ran, Pan Gao, Panpan Jing, Yi Liu, Hua Lin

{"title":"Structural diversity and photocurrent responses of multi-component chalcogenidometalates","authors":"Chang Liu, Wenjing Tian, Mao-Yin Ran, Pan Gao, Panpan Jing, Yi Liu, Hua Lin","doi":"10.1039/d5qi00110b","DOIUrl":"https://doi.org/10.1039/d5qi00110b","url":null,"abstract":"Multi-component chalcogenidometalates have garnered significant attention due to their promising applications in solar energy conversion devices, including photodetectors, solar cells, and photocatalysts. Photocurrent response is not only a fundamental property of photodetectors but also serves as a key indicator of the solar energy conversion efficiency in potential semiconductor devices. Despite the growing interest, a clear and universal guideline for designing chalcogenide materials with excellent photocurrent response remains elusive, primarily due to the substantial variations in their chemical compositions and crystal structures. In this review, we present a comprehensive compilation of reported multi-component chalcogenidometalates, including main group chalcogenides with binary and ternary anionic frameworks, and discuss their photocurrent response performance. Additionally, we also highlight other special chalcogenide systems, focusing on their photocurrent response characteristics. For the first time, we systematically summarize the intricate relationships between chemical composition, crystal structure, electronic band structure, and photocurrent response in these materials. Finally, we believe that this review provides a valuable structural perspective on the photocurrent response of multi-component chalcogenidometalates, offering useful insights for the design and application of advanced solar energy conversion materials.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"32 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143546084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Interfacial Polarization Loss Induced by Hollow Engineering of Hollow Alloyed CoFe-ZIF Nanocage/Carbon Nanofibers for Efficient Microwave Absorption 中空合金 CoFe-ZIF 纳米ocage/Carbon 纳米纤维的中空工程诱导的界面极化损耗增强，可实现高效微波吸收

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-04 DOI: 10.1039/d5qi00118h

Dan Wu, Cong-Min Fan, Wusi Luo, Yingzhi Jin, Qinchuan He, Yiqun Wang

{"title":"Enhanced Interfacial Polarization Loss Induced by Hollow Engineering of Hollow Alloyed CoFe-ZIF Nanocage/Carbon Nanofibers for Efficient Microwave Absorption","authors":"Dan Wu, Cong-Min Fan, Wusi Luo, Yingzhi Jin, Qinchuan He, Yiqun Wang","doi":"10.1039/d5qi00118h","DOIUrl":"https://doi.org/10.1039/d5qi00118h","url":null,"abstract":"Metal organic frameworks (MOFs) have been widely studied in the field of microwave absorption due to high porosity and large specific surface area. The weak dielectric loss limits enhancement of their absorption performance. In this study, hollow alloyed CoFe-ZIF/CNFs composite fibers were successfully synthesized by electrospinning and high-temperature carbonization. The carbon fiber with dielectric loss wraps hollow alloyed CoFe-ZIF nanocage with magnetic loss to form a bamboo-shaped composite fiber to achieve magnetoelectric synergy. The construction of the hollow structure of hollow alloyed CoFe-ZIF nanocage and the combination of carbon fiber not only enriches a large number of heterogeneous interfaces, but also optimizes the impedance matching, which is beneficial to the attenuation dissipation of EMW. The results show that hollow alloyed CoFe-ZIF/CNFs composite fibers exhibit excellent electromagnetic wave absorption performance. When the filling is only 10wt%, the minimum reflection loss is -59.61 dB, and the effective absorption bandwidth reaches 6.64 GHz. This study used the combination of MOFs alloy cages and carbon fibers to regulate the absorbing properties, providing new insights into the preparation and application of 1D structural composite absorber.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"10 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143539140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homogeneous Bismuth Dopants Regulate Cerium Oxide Structure to Boost Hydrogen Peroxide Electrosynthesis via Two-Electron Oxygen Reduction 同质铋掺杂剂调节氧化铈结构，通过双电子氧还原促进过氧化氢电合成

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-03 DOI: 10.1039/d5qi00075k

QiYing Yang, Changhui Sun, Lanju Sun, Hangning Liu, Linghao Su, Chuanli Ma, Jie Wang, Liangyu Gong, Zhenhua Yan

{"title":"Homogeneous Bismuth Dopants Regulate Cerium Oxide Structure to Boost Hydrogen Peroxide Electrosynthesis via Two-Electron Oxygen Reduction","authors":"QiYing Yang, Changhui Sun, Lanju Sun, Hangning Liu, Linghao Su, Chuanli Ma, Jie Wang, Liangyu Gong, Zhenhua Yan","doi":"10.1039/d5qi00075k","DOIUrl":"https://doi.org/10.1039/d5qi00075k","url":null,"abstract":"The electrochemical synthesis of hydrogen peroxide (H₂O₂) through the two-electron oxygen reduction reaction (2e-ORR) offers a promising alternative to the traditional anthraquinone process. However, this method often suffers from sluggish kinetics. In this study, we introduce a novel bismuth-doped cerium oxide (Bi-CeO₂) composite, featuring hollow nanospheres and triangular nanoplate structures with highly dispersed Bi dopants on the CeO₂ matrix. Notably, the morphology of the Bi-CeO₂ can be dynamically tuned between spheres and plates by adjusting the amounts of Bi dopants. This innovative 1%-Bi-CeO₂ catalyst exhibits exceptional H₂O₂ selectivity at 62.3% and significantly enhanced H₂O₂ yield, reaching 1.16 mol gcat -1 h -1 at 0.1 V with a high Faraday efficiency of 56.0%. Density functional theory (DFT) calculations reveal that Bi dopants effectively lower the free energy barrier for *OOH intermediate formation, thereby accelerating H₂O₂ production. Additionally, when integrated into a dual-cathode system, the 1%-Bi-CeO₂ demonstrates superior performance in removing organic dyes such as rhodamine B (RhB). This work offers a groundbreaking approach to designing high-efficiency heteroatom-doped catalysts for 2e-ORR, paving the way for more effective electrochemical systems..","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"39 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MOF-based electrode materials for aqueous zinc-ion batteries: design strategy and future challenges

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-03 DOI: 10.1039/d5qi00159e

Yingying Wang, Tao Pan, Sicong Zhang, Qing Li, Huan Pang

引用次数: 0