Scott McGuigan, Stephen Tereniak, Avery Smith, Subhendu Jana, Carrie Donley, Leonard Collins, Nandan Ghorai, Yixuan Xu, Emmanuel Adu Fosu, Simon Suhr, Hannah R.M. Margavio, Hyuenwoo Yang, Gregory N. Parsons, Patrick L. Holland, Elena Jakubikova, Tianquan Lian, Paul Maggard
{"title":"Illuminating the Mechanistic Impacts of an Fe-Quaterpyridine Functionalized Crystalline Poly(triazine imide) Semiconductor for Photocatalytic CO2 Reduction","authors":"Scott McGuigan, Stephen Tereniak, Avery Smith, Subhendu Jana, Carrie Donley, Leonard Collins, Nandan Ghorai, Yixuan Xu, Emmanuel Adu Fosu, Simon Suhr, Hannah R.M. Margavio, Hyuenwoo Yang, Gregory N. Parsons, Patrick L. Holland, Elena Jakubikova, Tianquan Lian, Paul Maggard","doi":"10.1039/d5qi00859j","DOIUrl":"https://doi.org/10.1039/d5qi00859j","url":null,"abstract":"The strategy of incorporating earth-abundant catalytic centers into light-absorbing architectures is desirable from the viewpoint of low cost, low toxicity, and versatility at activating small molecules to produce solar-based fuels. Herein, we show that an Fe-quaterpyridine molecular catalyst can be anchored to a light-absorbing, crystalline, carbon nitride (PTI), to yield a molecular-catalyst/material hybrid, Fe-qpy-PTI, capable of facilitating CO2 reduction to CO selectively (up to ~97-98%) in aqueous solution under low-intensity light irradiation. This hybrid material leverages the ability of the Fe-qpy catalyst to bind CO2 upon a one-electron reduction, as achieved by transfer of excited electrons from the carbon-nitride semiconductor. The catalytic activity of the hybrid material was measured across a range of catalyst loadings (from 0.1-3.8 wt %) at a low incident power density of 50 mW·cm-2, resulting in rates of CO evolution up to 596 µmol·g-1·h-1 at a 3.8 wt% loading for a 3 h experiment. The hybrid material attained a CO evolution rate of 608 µmol·g-1·h-1, or 305 turnovers over the course of 8 h for a TOF of ~38. Apparent quantum yields reached up to ~2.4%, but which decreased by ~25% at a higher power density of 150 mW·cm-2. Higher light intensities imposed on the hybrid material provided an initial increase in activity but negatively impacted photocatalytic rates over time. Transient absorption spectroscopy results showed electron survival probabilities that were consistent with the observed product rates. Computational modeling was also used to evaluate and understand the mechanistic pathway of the high product selectivity for CO versus H2. These results have helped unveil key factors to leverage the mechanistic understanding of molecular catalysts for CO2 reduction on light absorbing semiconductors and to establish optimal conditions to attain maximal rates in aqueous solution.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"1 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304598","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}
{"title":"Controlling circularly polarized luminescence of a pyrene modified chiral Zn(II) complex based on a temperature-dependent diastereomer equilibrium and solid-state excimer formation","authors":"Miyu Satake, Masahiro Ikeshita, Daiya Suzuki, Yoshitane Imai, Takashi Tsuno","doi":"10.1039/d5qi01086a","DOIUrl":"https://doi.org/10.1039/d5qi01086a","url":null,"abstract":"A pyrene modified chiral Schiff-base Zn(II) complex was synthesized and its circularly polarized luminescence (CPL) properties were examined. Single crystal X-ray diffraction analysis of the (<em>S</em>,<em>S</em>)-isomer revealed its distorted tetrahedral coordination geometry with <em>Λ</em> coordination chirality. An equilibrium of the two diastereomers with different coordination chiralities, <em>Λ</em>-(<em>S</em>,<em>S</em>) and <em>Δ</em>-(<em>S</em>,<em>S</em>), was observed in solution, and the ratio of the isomers was found to change with temperature. The complex showed negligible CPL in CHCl<small><sub>3</sub></small> at room temperature, whereas a clear mirror-image signal was obtained when the solution was cooled to 253 K. Interestingly, excimer-derived long wavelength emission was also observed in the solid state, resulting in CPL sign inversion compared to the solution state. The relationship between their photophysical properties and coordination geometries were theoretically investigated by density functional theory (DFT) calculations.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"26 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304599","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}
Andrey Baranov, Evgeniya Pavlovna Doronina, Irina Yu. Bagryanskaya, Marianna I Rakhmanova, Konstantin Brylev, Taisiya Sergeevna Sukhikh, Alexander Artem'ev
{"title":"Coinage metal(I) clusters based on a flexible P,P′(N,N′)2-ligand: colorful phosphorescence, abnormal thermal quenching behavior and anticounterfeiting application","authors":"Andrey Baranov, Evgeniya Pavlovna Doronina, Irina Yu. Bagryanskaya, Marianna I Rakhmanova, Konstantin Brylev, Taisiya Sergeevna Sukhikh, Alexander Artem'ev","doi":"10.1039/d5qi00813a","DOIUrl":"https://doi.org/10.1039/d5qi00813a","url":null,"abstract":"Unprecedented pseudosymmetric CuI, AgI and AuI clusters with pronounced metallophilic Au–X (X = Cu, Ag, Au) or Ag–Ag contacts have been assembled using 1,2-bis[bis(pyridin-2-ylmethyl)phosphino]ethane (L), an innovative P,P′(N,N′)2- ligand. Its interaction with AuCl/KPF6, AuI or (AuC≡CPh)n yields complexes of the type [Au2L2]2+, [Au2I2L2] and [Au2(C≡CPh)2L]x (x = 2 or n), respectively. The reaction of Lwith AgPF6 affords a [Ag4L2]4+ cluster, while the treatment with AgNO3 leads to a nine-nuclear [Ag9L3(NO3)3]6+ cluster. The latter was transformed into a heterometallic [Au2Ag4L2(NO3)2(H2O)]4+ cluster by treatment with [Au(tht)Cl]. Sequential reaction of L with Au(I) halides and [Cu(MeCN)4]PF6 provides heterometallic [Au2Cu4(μ2-Cl)2L2]4+ and [Au2Cu4L2I2(MeCN)4]4+ ensembles. Most of the title clusters exhibit a charge transfer photoluminescence in the green to orange region with the quantum efficiencies up to an impressive 77%. Surprisingly, the [Au2Cu4L2I2(MeCN)4]4+ cluster shows an abnormal (negative) thermal quenching of the luminescence, which is unprecedented for Au(I) derivatives. The practical utility of the designed clusters was demonstrated by their application as innovative vapor-responsive emission inks for advanced anticounterfeiting.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"6 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144304600","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}
Cândida Alíssia Brandl, Andressa Lunardi, Camila Nunes Cechin, Tanize Bortolotto, Natália de Freitas Daudt, Robert Alan Burrow, Bernardo Almeida Iglesias, Artur Luís Hennemann, Koiti Araki, Ulrich Abram, Ernesto Schulz Lang, Bárbara Tirloni
{"title":"Synthesis and photocatalytic evaluation of first nickel dioxo-haloselenate complexes immobilized on mesoporous TiO2 for enhanced solar-driven hydrogen production","authors":"Cândida Alíssia Brandl, Andressa Lunardi, Camila Nunes Cechin, Tanize Bortolotto, Natália de Freitas Daudt, Robert Alan Burrow, Bernardo Almeida Iglesias, Artur Luís Hennemann, Koiti Araki, Ulrich Abram, Ernesto Schulz Lang, Bárbara Tirloni","doi":"10.1039/d5qi00317b","DOIUrl":"https://doi.org/10.1039/d5qi00317b","url":null,"abstract":"[NiBr(SeO<small><sub>2</sub></small>Br)(bipy)<small><sub>2</sub></small>] (<strong>1</strong>), [NiBr(SeO<small><sub>2</sub></small>Br)(phen)<small><sub>2</sub></small>] (<strong>2</strong>), and [NiCl(SeO<small><sub>2</sub></small>Cl)(bipy)<small><sub>2</sub></small>] (<strong>3</strong>), represent the first nickel complexes incorporating dioxo-haloselenate anions. These complexes were selected due to their unique structural features, and light absorption properties, which make them promising candidates for photocatalytic applications. The compounds were immobilized onto mesoporous TiO<small><sub>2</sub></small> (m-TiO<small><sub>2</sub></small>), resulting in photocatalysts <strong>1</strong>@m-TiO<small><sub>2</sub></small>, <strong>2</strong>@m-TiO<small><sub>2</sub></small>, and <strong>3</strong>@m-TiO<small><sub>2</sub></small>, which were evaluated for solar-driven water splitting to produce hydrogen. Electrochemical analyses revealed suitable HOMO–LUMO energy levels for visible-light activation, and X-ray photoelectron spectroscopy confirmed changes in surface composition upon immobilization. Among the photocatalysts, <strong>2</strong>@m-TiO<small><sub>2</sub></small> exhibited the highest H<small><sub>2</sub></small> production, achieving 927 μmol g<small><sup>−1</sup></small> in 6 hours, outperforming both <strong>1</strong>@m-TiO<small><sub>2</sub></small> (803 μmol g<small><sup>−1</sup></small>) and <strong>3</strong>@m-TiO<small><sub>2</sub></small> (810 μmol g<small><sup>−1</sup></small>), as well as reference materials m-TiO<small><sub>2</sub></small> and Degussa P25. Moreover, complex <strong>1</strong> demonstrated intrinsic electrochemical activity for H<small><sub>2</sub></small> evolution in acidic media. Recycling experiments showed the stability of <strong>2</strong>@m-TiO<small><sub>2</sub></small> over three cycles, confirming its robustness. These findings not only demonstrate the effective cocatalytic role of complexes <strong>1–3</strong> in enhancing H<small><sub>2</sub></small> generation but also shed light on interfacial photo-induced processes <em>via</em> HOMO–LUMO evaluation and XPS analysis. This study introduces the first example of nickel-based dioxo-haloselenate complexes as cocatalysts, opening new avenues for the development of sustainable hydrogen-evolving materials.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"606 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279008","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}
Jonas Hermann Franzen, Xuequan Zhou, Kelly Biv, Alessandro Ajò, Austin Mencke, Lukas F. B. Wilm, Michael Seidl, Thomas Hofer, Luisa De Cola, Peter Brüggeller, Mark Thompson, Fabian Dielmann
{"title":"Electron-rich phenanthroline bearing N-heterocyclic imine substituents: synthesis, optical properties, metal coordination","authors":"Jonas Hermann Franzen, Xuequan Zhou, Kelly Biv, Alessandro Ajò, Austin Mencke, Lukas F. B. Wilm, Michael Seidl, Thomas Hofer, Luisa De Cola, Peter Brüggeller, Mark Thompson, Fabian Dielmann","doi":"10.1039/d5qi00957j","DOIUrl":"https://doi.org/10.1039/d5qi00957j","url":null,"abstract":"Polypyridines functionalized with π-donating groups constitute a class of electron-rich ligands with significant relevance in coordination chemistry and catalysis. The incorporation of strongly basic guanidinyl substituents, however, often introduces multiple binding sites, with coordination typically favoring the guanidyl nitrogen atoms. Herein, we report the synthesis and characterization of a new electron-rich 1,10-phenanthroline ligand featuring bulky NHI groups that define a well-structured coordination cavity. Protonation studies and the preparation of a zinc(II) complex reveal that Lewis acids preferentially coordinate at the phenanthroline nitrogen atoms rather than the NHI moiety. The electronic and photophysical properties of the new ligand and its complexes are explored through a combination of computational and experimental methods, demonstrating that its emission and absorption characteristics are highly sensitive to protonation, concentration, and metal coordination.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"10 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144268839","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}
{"title":"Regulation of Afterglow and Self-Trapped Exciton Emission in Indium-Based Organic Metal Halides via Metal Ion Doping for Multilevel Anti-Counterfeiting","authors":"Hongbo Qi, Jing Li, Hailong Yu, Jing Zhang, Chen Chen, Qiuju Han, Wenzhi Wu","doi":"10.1039/d5qi00894h","DOIUrl":"https://doi.org/10.1039/d5qi00894h","url":null,"abstract":"Zero-dimensional hybrid metal halides (0D HMHs) have sparked extensive research in the field of optoelectronic materials due to their unique physical and chemical properties. This work innovatively incorporates In<small><sup>3+</sup></small> into a triphenyl-sulfide-based organic phosphorescent system, successfully constructing a novel 0D hybrid metal halide, (Ph<small><sub>3</sub></small>S)<small><sub>2</sub></small>InCl<small><sub>5</sub></small>. This new material achieves a synergistic output of blue photoluminescence (PL) and green afterglow, which originating from the intrinsic excitation of [Ph<small><sub>3</sub></small>S]<small><sup>+</sup></small>. Through ns<small><sup>2</sup></small> metal ions (Bi<small><sup>3+</sup></small>/Sb<small><sup>3+</sup></small>) doping engineering, a dual-channel energy transfer pathway is established, enabling the transition from singlet and triplet states to self-trapped exciton states, thereby achieving dynamic control of fluorescence and phosphorescence emissions. Additionally, temperature-dependent PL spectra, time-resolved photoluminescence (TRPL), and Raman spectroscopy are employed to investigate the enhanced photoluminescence of the doped samples, revealing the process of STE (self-trapped excitons) recombination and the electron-phonon coupling processes. It is also found that defect states introduced by Sb<small><sup>3+</sup></small> doping lead to thermoluminescence with tunable color output, and explores its applications in temperature-sensitive materials based on fluorescence peak positioning. Based on these findings, a phosphorescence-PL dual-mode dynamic switching encryption system is constructed, utilizing a time-resolved multi-level decryption strategy to achieve high-order optical anti-counterfeiting. This work not only aids in the in-depth understanding of STE formation in In-based organic metal halides but also provides important guidance for the modulation strategy of STE and afterglow emissions in other 0D HMH luminescent materials.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"4 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279009","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}
Shuangyan Li, Zhimu Zheng, F. Gao, m wu, Kuo Wei, Hao Hu, Y. L. Song, h li
{"title":"Structural optimization of oxygen vacancies in WO3 by Cu doping for enhanced electrocatalytic nitrate reduction to ammonia","authors":"Shuangyan Li, Zhimu Zheng, F. Gao, m wu, Kuo Wei, Hao Hu, Y. L. Song, h li","doi":"10.1039/d5qi00388a","DOIUrl":"https://doi.org/10.1039/d5qi00388a","url":null,"abstract":"Electrochemical nitrate reduction to ammonia can not only remove harmful nitrate pollutants from wastewater but also generate valuable ammonia. In this paper, a simple hydrothermal method was used to successfully synthesize the nanorod-shaped Cu-WO3 catalyst, demonstrating excellent NO3RR performance. Experimental results indicate that Cu-doped WO3 significantly increases the content of oxygen vacancies compared to the sample of WO3, resulting in improved NO3RR performance. As a result, Cu-WO3 exhibits high yield of NH3 is 2131.3 μg/h/mgcat and Faraday efficiency is 94% at optimum potential of −0.6 V (vs. RHE) in an alkaline electrolyte. 15N isotopic labeling tests confirm the origin of produced ammonia. Cu-WO3 also exhibits excellent electrochemical cycle stability and long-term durability, suggesting it possible application in industrial filed. In situ Fourier-transform infrared (FTIR) spectroscopy reveals that Cu-WO3 can effectively adsorb nitrate and nitrogen dioxide intermediates. This work provided valuable insights for the exploration of efficient nitrate NO3RR electrocatalysts.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"215 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252047","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}
{"title":"Alternating Copolymer-based Bipolar Cathode Material for Efficient Symmetric Sodium-Dual-ion Batteries","authors":"Jingfu Chen, Jiayi Qi, Haoyu Yin, junhong tan, Xiaorui Liu, Rongxing He, Linna Zhu, Fei Wu","doi":"10.1039/d5qi00937e","DOIUrl":"https://doi.org/10.1039/d5qi00937e","url":null,"abstract":"Organic bipolar electrodes are capable of facilitating both n-type and p-type reactions for energy storage, typically offering high theoretical specific capacities. This article presents the design and synthesis of a new bipolar polymer cathode material, PDQZ, which is synthesized by copolymerization of phenanthroline diketone with dihydrophenazine. Dihydrophenazine works to store anions while phenanthroline diketone could store sodium ions. In a sodium-based half-cell, PDQZ demonstrates an energy density of 597 Wh/kg and a reversible specific capacity of 318 mAh/g at a current density of 0.5 C, with a capacity retention rate of 85% after 300 cycles. Notably, even after 4000 cycles at 10 C, the capacity retention rate remains at 78%. Furthermore, symmetrical batteries are successfully assembled based on PDQZ, which shows the \"ready-to-charge\" characteristic, providing a discharge specific capacity of 112 mAh/g at 1 A/g. More excitingly, stable cycling performance over 2000 cycles are achieved in symmetric cells, with an average decay rate as low as 0.02% per cycle. These results highlight the promising application potential of the bipolar PDQZ in energy storage, and may also shed a light on future design of bipolar polymer electrode materials.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"232 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252048","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}
Chunlan Tang, Aoge Yao, Wen-Hao Xing, Wenwen Jiang, Jian Tang, Lei Kang, Jieyun Wu, Wenlong Yin, Kang Bin
{"title":"Phase Transition Engineering to Break the Symmetry of Diamond-Like Chalcogenide for Second-Order Nonlinear Optics","authors":"Chunlan Tang, Aoge Yao, Wen-Hao Xing, Wenwen Jiang, Jian Tang, Lei Kang, Jieyun Wu, Wenlong Yin, Kang Bin","doi":"10.1039/d5qi00969c","DOIUrl":"https://doi.org/10.1039/d5qi00969c","url":null,"abstract":"Temperature-induced phase transitions offer a promising route to engineer nonlinear optical materials, particularly for infrared applications where conventional design approaches face fundamental limitations. Herein, a temperature-induced centrosymmetric (CS) to noncentrosymmetric (NCS) irreversible phase transition strategy was employed to successfully prepare a novel NCS diamond-like (DL) chalcogenide, β-Ag4P2S7, which was derived from the CS phase α-Ag4P2S7 transformation. Structural analysis reveals that this transformation involves a reorganization of [Ag2PS₄]²⁻ layers from an AA'AA' to AA'A''AA'A'' stacking pattern, facilitated by bridging [Ag1S₄]⁷⁻ tetrahedra. β-Ag₄P₂S₇ has exceptional IR NLO properties, including a strong phase-matchable second-harmonic generation (SHG) response (1.02 × AgGaS2) and a wide band gap of 2.90 eV (the largest one in the Ag-based DL chalcogenides), which balances excellent NLO response with wide band gap. Further structure-property relationship analyses show that superior NLO properties and band gap broadening of β-Ag4P2S7 mainly originate from the alteration of the [Ag2PS₄]²⁻ layer stacking configuration, which is driven by a temperature-induced irreversible phase transition. This work not only presents a new paradigm for designing high-performance NLO materials through phase transitions, but also significantly advances the potential of temperature-mediated crystal engineering for optical applications.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"70 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237804","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}
{"title":"Electronic State Modulation via Electrochemical Reconstruction Enhances Dilute Nitrate-to-Ammonia Reduction Efficiency","authors":"Yishan Xu, Jiayu Zhan, Yaohua Hong, Lu-Hua Zhang, Fengshou Yu","doi":"10.1039/d5qi00761e","DOIUrl":"https://doi.org/10.1039/d5qi00761e","url":null,"abstract":"The electrochemical reduction of NO3- to NH3 represents a promising approach for producing a renewable fuel with high energy density. However, the problems such as low activity and/or selectivity in low-concentration solutions (≤100 ppm NO3--N) and instability of active sites still require to be overcame. In this work, Cu/ZnO heterostructure composite materials were synthesized for NO3RR. During the electrocatalysis process, the Cu/ZnO undergoes electrochemistry-driven structural reconstruction, generating CuZn bimetallic alloy phase. Under the dilute NO3--N solution of 100 ppm, the optimal Cu75Zn25 catalyst displays a FENH3 of 94.1% at -0.7 V vs. RHE, and a high NH3 yield of 414 mmol h-1 gcat-1. Density Functional Theory calculations and a series of characterizations unveil that the CuZn alloy phase alters the electronic state surrounding Cu, leading to the regulation of Cu d-band center and thereby optimizing the adsorption of intermediates. Meanwhile, forming new alloy phase inhibits the competitive HER as well. This study shows the prospect of CuZn composite catalyst in sustainable NH3 synthesis, which is convinced of having certain guiding significance for the efficient and eco-friendly conversion of effluents in the future.","PeriodicalId":79,"journal":{"name":"Inorganic Chemistry Frontiers","volume":"134 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237803","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}