Inorganic Chemistry Frontiers最新文献_第10页

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

Exploring the substitution effect on the magnetic coupling of tetrazinyl-bridged Ln2 single-molecule magnets

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-03 DOI: 10.1039/d4qi02796e

Niki Mavragani, Alexandros Kitos, Gayfullina Rezeda, Akseli Mansikkamäki, Jani Moilanen, Muralee Murugesu

{"title":"Exploring the substitution effect on the magnetic coupling of tetrazinyl-bridged Ln2 single-molecule magnets","authors":"Niki Mavragani, Alexandros Kitos, Gayfullina Rezeda, Akseli Mansikkamäki, Jani Moilanen, Muralee Murugesu","doi":"10.1039/d4qi02796e","DOIUrl":"https://doi.org/10.1039/d4qi02796e","url":null,"abstract":"The design of new radical bridging ligands that can effectively promote strong magnetic coupling with Ln(III) ions needs to focus on radicals that are susceptible to synthetic modifications and bear diffuse spin density on their donor atoms. To probe this, we introduced various substituents possessing different electron-withdrawing/donating capabilities into the redox active s-tetrazinyl centre. This allowed for the systematic tuning of the redox and optoelectronic properties of the tetrazinyl ring. The effect of the substitution on the strength of the Ln-rad magnetic coupling was investigated on a series of radical-bridged Ln metallocene complexes featuring the 3,6-dimethyl-1,2,4,5-tetrazine (dmtz) and the 3,6-dimethoxy-1,2,4,5-tetrazine (dmeotz); [(Cp*2Ln)2(dmtz•-)(THF)2][BPh4]·THF (Ln = Gd (1-Gd) or Dy (1-Dy); Cp* = pentamethylcyclopentadienyl; THF = tetrahydrofuran) and [(Cp*2Ln)2(dmeotz•-)(THF)][BPh4] (Ln = Gd (2-Gd) or Dy (2-Dy)). Cyclic voltammetry, UV-Vis absorption spectroscopy, SQUID magnetometry, as well as ab initio and density functional theory (DFT) calculations are combined to underline the trends observed in this study, while comparisons to the unsubstituted 1,2,4,5-tetrazine (tz) and the 3,6-dichloro-1,2,4,5-tetrazine (dctz) are made. Notably, an intricate interplay between orbital overlap, ligand substituent effects, and changes in the coordination environment is found to collectively dictate the magnitude of JGd-rad in the investigated systems. The strong magnetic coupling combined with the highly anisotropic DyIII ions, grant 1-Dy and 2-Dy with slow magnetic relaxation in the absence of an external applied field. For 1-Dy an opening of the hysteresis loop is observed with Hc = ~5000 Oe, one of the highest coercivities for a dinuclear organic radical-bridged single-molecule magnet.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"52 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532665","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

The facet-dependent catalytic performance of CeO2 nanocatalysts in the decomposition of ammonium perchlorate

IF 7 1区化学

Inorganic Chemistry Frontiers Pub Date : 2025-03-03 DOI: 10.1039/d4qi03333g

Miao Zhang, Huixiang Wang, Shoufeng Xue, Wenting Lv, RuiSheng Qin, Weiwei Pan, Baoliang Lv

{"title":"The facet-dependent catalytic performance of CeO2 nanocatalysts in the decomposition of ammonium perchlorate","authors":"Miao Zhang, Huixiang Wang, Shoufeng Xue, Wenting Lv, RuiSheng Qin, Weiwei Pan, Baoliang Lv","doi":"10.1039/d4qi03333g","DOIUrl":"https://doi.org/10.1039/d4qi03333g","url":null,"abstract":"CeO2 nanocrystals can be used as an excellent catalyst in ammonium perchlorate (AP) decomposition, and exploring their catalytic performance on specific crystal facets is crucial for a deeper understanding of the reaction mechanism. Herein, CeO2 nanorods (CeO2-R) with (110) facets, octahedra (CeO2-O) with (111) facets and cubes (CeO2-C) with (100) facets were successfully synthesized, and their activity in AP decomposition showed an order of CeO2-R>CeO2-C>CeO2-O. Specifically, the THTD decreased from 428.6 ℃ to 357.8 ℃, 385.4 ℃ and 410.6 ℃ for (110), (100) and (111) facet, respectively. The XPS and EPR results confirmed a direct positive correlation between the oxygen vacancies concentration on the facets and their catalytic performance, and through detailed tracking experiments with TG-MS, the following reasonable conclusion can be drawn: oxygen vacancies can not only facilitate the adsorption of NH3 which is the main decomposition product, but also reduce the band gap of CeO2, and then promotes the deep dissociation of NH3. This work presented a clear facet-dependent activity of CeO2 in the thermal decomposition of AP and comprehensively proved the supportive role of oxygen vacancies on different facets in the reaction.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"5 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143532719","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