Science China Materials最新文献

{"title":"Bamboo-like amorphous Ni(OH)2 nanotubes wrapped Cu nanoparticles with a confined geometry for CO2 electroreduction to ethane in a flow cell","authors":"Xiangyu Wang \u0000 (,&nbsp;),&nbsp;Weipei Sun \u0000 (,&nbsp;),&nbsp;Peng Wang \u0000 (,&nbsp;),&nbsp;Tian Sheng \u0000 (,&nbsp;),&nbsp;Feng Gao \u0000 (,&nbsp;),&nbsp;Zhengcui Wu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3200-4","DOIUrl":"10.1007/s40843-024-3200-4","url":null,"abstract":"<div><p>It has made significant progress in catalyst and reactor design for commercial current densities in CO₂ electroreduction (CO₂ER). However, these catalyst systems have rarely been applied for a C₂ gas product of ethane due to its commonly inferior selectivity relative to other C₁ and C₂ products. Herein, bamboo-like amorphous Ni(OH)₂ nanotubes wrapped Cu nanoparticles composite (Cu NPs@a-Ni(OH)₂ NTs) is constructed for selective CO₂ER to ethane in a flow cell. The unique Cu NPs@a-Ni(OH)₂ NTs structure provides a confined geometry to improve the adsorption of the reactive species. The interface of Cu NPs and a-Ni(OH)₂ NTs is stabilized by generating some NiOH species. The produced Cu@NiOH interface enhances the activation of CO₂ to *C*OOH and strengthens the adsorption of *CO_L on Cu site for more *COH formation and its dimerization for final ethane production. Meanwhile, amorphous Ni(OH)₂ nanotubes promote water dissociation for the hydrogenation of carbonous intermediates, contributing to ethane production. The synthesized Cu NPs@a-Ni(OH)₂ NTs can reach a Faradaic efficiency of 48.3% and a partial current density of −226.7 mA cm⁻² for ethane at −0.7 V in a flow cell, with a remarkable stability for 24 h. This work provides a rational strategy to engineer Cu-based composite for selective CO₂ER to ethane in a flow cell.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"455 - 463"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40843-024-3200-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-excitation-driven full-component-responsive lanthanide-based metal-organic framework for switchable profiling of multi-disease markers","authors":"Guoli Chen \u0000 (,&nbsp;),&nbsp;Bin Dai \u0000 (,&nbsp;),&nbsp;Ji-Na Hao \u0000 (,&nbsp;),&nbsp;Yongsheng Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3214-y","DOIUrl":"10.1007/s40843-024-3214-y","url":null,"abstract":"<div><p>Accurate detection of multiple small end-metabolic biomarkers is more sensitive than large biomolecules to provide real-time feedbacks of physiological/pathological state, but is more challenging due to lack of specific identifying groups. Current optical platforms suffer from unsatisfactory resolutions to differentiate each target because they produce similar output to different targets using a single excitation, and inevitably involve non-functional components that increase chances of interacting with non-target molecules. Herein, by taking full advantage of each building unit’s functionality to integrate multivariate recognition elements in one interface, a dual-excitation-driven full-component-responsive metal-organic framework (MOF)-based luminescent probe, namely CeTMA-TMA-Eu, is successfully custom-tailored for detecting both pseudouridine (ψ) and <i>N</i>-acetylaspartate (NAA), the diagnostic hallmarks of cancer and neurodegenerative disorder. Remarkably, ψ interacts with MOF’s organic building unit (trimesic acid, TMA) and filters out its absorptions of 262 nm-light to reduce its energy transferred to Eu³⁺, while NAA induces the valence transition of Ce⁴⁺/Ce³⁺ nodes to improve the cooperative energy transfer efficacy from TMA and Ce³⁺ to Eu³⁺. As a result, this platform exhibits completely reverse photoresponses towards ψ (“switch-off” at 262 nm excitation) and NAA (“switch-on” upon 296 nm excitation), and demonstrates excellent selectivity and sensitivity in complex biofluids, with low detection limits of 0.16 and 0.15 µM, and wide linear ranges of 0–180 and 0–100 µM, respectively. Such full-component-responsive probe with dual-excitation-mediated reverse responses for multi-small targets intrinsically minimizes its interaction with non-target molecules and amplifies resolution to discriminate each target, providing a new strategy for improving assay accuracy of multi-small biomarkers in diagnostics.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"666 - 676"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrastrong MXene films for bone regeneration","authors":"Jinghong Li","doi":"10.1007/s40843-024-3202-4","DOIUrl":"10.1007/s40843-024-3202-4","url":null,"abstract":"","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1294 - 1295"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent progress in device engineering for semitransparent organic photovoltaics","authors":"Chenyujie Zhu \u0000 (,&nbsp;),&nbsp;Haolin Zheng \u0000 (,&nbsp;),&nbsp;Longtang Zhao \u0000 (,&nbsp;),&nbsp;Xiaozhang Zhu \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3210-y","DOIUrl":"10.1007/s40843-024-3210-y","url":null,"abstract":"<div><p>Semitransparent organic photovoltaics (ST-OPVs), as a novel green energy acquisition technology, are one of the most promising applications in organic photovoltaics. Because of its intrinsic transmittance originated from adjustable absorption, light weight and flexibility, ST-OPVs, compared with other inorganic photovoltaics, show unique potential in wearable devices, self-powered greenhouse roofs and building integrated photovoltaics. To further promote the practicality and industrialization of ST-OPVs, the light utilization efficiency is still the focus of research. Hence, the recent progress of ST-OPVs is reviewed from the theoretical models, transparent top electrodes, the optical modification and selection of active layer materials. We hope that this paper will provide valuable guidelines for the ST-OPV research.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 and Applications","pages":"1314 - 1329"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Charge-redistribution in bimetallic oxides buried in microporous curled carbon for efficient nitrate electroreduction to ammonia","authors":"Lituo Liu \u0000 (,&nbsp;),&nbsp;Hongliang Dong \u0000 (,&nbsp;),&nbsp;Sina Huang \u0000 (,&nbsp;),&nbsp;Nana Gao \u0000 (,&nbsp;),&nbsp;Leiqian Zhang \u0000 (,&nbsp;),&nbsp;Li-Ming Yang \u0000 (,&nbsp;),&nbsp;Jingwen Ba \u0000 (,&nbsp;),&nbsp;Johan Hofkens,&nbsp;Markus Antonietti,&nbsp;Tianxi Liu \u0000 (,&nbsp;),&nbsp;Feili Lai \u0000 (,&nbsp;),&nbsp;Zhihong Tian \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3198-6","DOIUrl":"10.1007/s40843-024-3198-6","url":null,"abstract":"<div><p>Electrochemical reduction from nitrate into ammonia is a chance for nitrate removal from drinking water, while at higher concentrations, this 8-electron reduction process could even become relevant for energy storage, high conversions and low onset potentials assumed. Herein, we report the synthesis and analysis of a NiFe₂O₄/C-MS hybrid system made by a molten-salt strategy where the Ni-Fe oxide spinel nanoparticles act as the active center for electrochemical nitrate (NO₃⁻) reduction reaction, while the microporous carbon serves as a conductive support to form a cohesive electrode material. The NiFe₂O₄/C-MS catalyst achieves a maximum NH₃ yield rate of 5.4 mg mg_cat⁻¹ h⁻¹ and Faradaic efficiency of 98% at −0.6 V versus reversible hydrogen electrode. With NiFe₂O₄ nanoparticles buried into microporous carbon, the onset potential decreases dramatically. We propose that this reduction originates from charge redistribution in NiFe₂O₄ in the electronic heterojunction with carbon, while enhanced electrolyte diffusion in microporous carbon facilitates high conversion rates. Density functional theory calculations clarify the low energy barrier on NiFe₂O₄, highlighting the essential role of Ni in activating Fe species. The COMSOL Multiphysics simulations demonstrate that the microporous curled carbon accelerates NO₃⁻ transport and enhances adsorption on the reactive sites. This work offers insights for designing carbon-based nanocomposites for efficient nitrate reduction electrocatalysis.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"472 - 482"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance visible-infrared broadband transparent copper mesh conductor and applications for electromagnetic shielding and heating","authors":"Tengfei Li \u0000 (,&nbsp;),&nbsp;Xiaolian Chen \u0000 (,&nbsp;),&nbsp;Zhaohua Xu \u0000 (,&nbsp;),&nbsp;Shuhong Nie \u0000 (,&nbsp;),&nbsp;Wenya Xu \u0000 (,&nbsp;),&nbsp;Wei Yuan \u0000 (,&nbsp;),&nbsp;Su Xu \u0000 (,&nbsp;),&nbsp;Shuo Zhang \u0000 (,&nbsp;),&nbsp;Fangfang Pei \u0000 (,&nbsp;),&nbsp;Wenming Su \u0000 (,&nbsp;),&nbsp;Zheng Cui \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3186-7","DOIUrl":"10.1007/s40843-024-3186-7","url":null,"abstract":"<div><p>Transparent conductors (TCs) have widespread applications in the fields of modern photodetectors and smart windows. While TCs for visible wavelengths have seen significant advancements, the development of visible-infrared (vis-IR) broadband TCs for infrared is still a daunting challenge due to the trade-off between infrared transparency and conductivity. Here, we present a vis-IR TC fabricated by using a damage-free indirect transfer method. This method involves polymer-mediated bonding of a high-resolution, standalone copper (Cu) mesh onto infrared or visible substrates via a transfer film. The obtained Cu mesh TC exhibits excellent conductivity with a sheet resistance as low as 0.06 Ω/□, as well as 81% transmittance at a visible wavelength of 550 nm and 65% transmittance at an IR wavelength of 10 µm. Furthermore, a specially developed bonding strategy ensures the long-term reliability of the Cu mesh TC in harsh environments. The Cu mesh TC can be applied in both heating and electromagnetic (EM) shielding. As a transparent heater, it reaches approximately 100°C at an applied voltage of 1.2 V within 100 s. For EM shielding, a demonstration using a stainless-steel box with a transparent observation window which is integrated with the Cu mesh shows that while the window allows both optical and IR observations, the 4G signals (8.2 GHz) of a smartphone inside the box are effectively blocked.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"421 - 431"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-temperature evolution processes of exciplex states in the TBRb/C60 planar-heterojunction OLEDs via in-situ heating","authors":"Hongqiang Zhu \u0000 (,&nbsp;),&nbsp;Kaihui Yin \u0000 (,&nbsp;),&nbsp;Zebang Wu \u0000 (,&nbsp;),&nbsp;Lei Luo \u0000 (,&nbsp;),&nbsp;Weiyao Jia \u0000 (,&nbsp;),&nbsp;Xi Zhao \u0000 (,&nbsp;),&nbsp;Jing Chen \u0000 (,&nbsp;),&nbsp;Song Yang \u0000 (,&nbsp;),&nbsp;Yingfei Yi \u0000 (,&nbsp;),&nbsp;Yun Liu \u0000 (,&nbsp;),&nbsp;Zuhong Xiong \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3192-3","DOIUrl":"10.1007/s40843-024-3192-3","url":null,"abstract":"<div><p>Magneto-conductance (MC) was used as a fingerprint detection tool to contactlessly visualize high-temperature evolution processes of exciplex (EX) states in the TBRb/C₆₀ planar-heterojunction (PHJ) organic light-emitting diodes (OLEDs). Specifically, MC was used to contactlessly observe at room temperature around 300 K. The reverse intersystem crossing (RISC) process from triplet to singlet EX states (EX₃→ EX₁) in the device at 300 K is observed for the first time from the TBRb/C₆₀ PHJ-OLED. The device shows a half-band-gap turn-on photoelectric characteristics. Temperature-dependent MC traces of the device present an interesting conversion from RISC to triplet-charge annihilation (TQA) process between EX₃ and charge carriers (T₁ + <i>q</i> → <i>e</i> + <i>h</i> + <i>q</i>′) after the device temperature increasing from 300 to 425 K via <i>in-situ</i> heating. By comprehensively analyzing MC traces, current-voltage characteristic curves, transient electroluminescence spectra, and optical microscopy images of the device and atomic force microscopy images of the TBRb film, we find that the increase of temperature destroys the molecule structures of organic materials, which leads to the generation of many traps inside the organic semiconductor films comprising the TBRb/C₆₀ PHJ-OLED. These traps will capture polaron-pairs, EX, and exciton states and then affect their interactions, which finally induces the changes of MC traces. This work not only deepens understandings of high-temperature evolution processes of polaron-pairs, EX, and exciton states in the TBRb/C₆₀ PHJ devices, but also provides a new method to study the microscopic mechanisms in OLED operating in high temperature environment.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"413 - 420"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blue LED-pumped efficient NIR luminescence in Sb3+-doped lead-free metal halides","authors":"Xiaoyong Huang","doi":"10.1007/s40843-024-3218-0","DOIUrl":"10.1007/s40843-024-3218-0","url":null,"abstract":"","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 and Applications","pages":"1676 - 1677"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Realizing mechanical stable and efficient wide-bandgap flexible perovskite solar cells by toughening the buried interface","authors":"Jianlei Cao \u0000 (,&nbsp;),&nbsp;Weijie Chen \u0000 (,&nbsp;),&nbsp;Chenli Zhao \u0000 (,&nbsp;),&nbsp;Jiacheng Xu \u0000 (,&nbsp;),&nbsp;Jialei Zheng \u0000 (,&nbsp;),&nbsp;Shuaiqing Kang \u0000 (,&nbsp;),&nbsp;Juan Zhu \u0000 (,&nbsp;),&nbsp;Jiandong Zhang \u0000 (,&nbsp;),&nbsp;Yaowen Li \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3209-x","DOIUrl":"10.1007/s40843-024-3209-x","url":null,"abstract":"<div><p>Wide-bandgap (WBG) flexible perovskite solar cells (pero-SCs) have aroused widespread interest because of their unique advantages in constructing high-efficiency tandems. Nickel oxide (NiO_<i>x</i>) is an excellent choice for the hole transport layer of flexible WBG pero-SCs owing to its low-temperature processing and outstanding stability. However, the presence of abundant defects at the buried perovskite layer and the weak binding force at the NiO_<i>x</i>/perovskite interface limit the efficiency and mechanical stability of flexible WBG pero-SCs. This study explores a buried interface modification strategy by introducing the functional molecule <i>N</i>-acetyl-L-glutamic acid (NALG) to address the above issues. Theoretical calculation and experimental results show that carboxyl and amide groups of NALG can bond with NiO_<i>x</i> and perovskite, respectively, which helps passivate interfacial defects and enhances perovskite crystallization. Moreover, NALG serves as a bridging molecule, significantly improving the toughness of the NiO_<i>x</i>/perovskite interface. Consequently, the flexible WBG pero-SC based on NiO_<i>x</i>/NALG achieved a power conversion efficiency (PCE) of 16.28% with reduced energy loss. Additionally, these flexible pero-SCs demonstrated robust mechanical durability, retaining 83% of their initial efficiencies after 10000 bending cycles at a radius of 5 mm. Furthermore, the devices exhibited outstanding long-term operational, thermal, and moisture stabilities.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 and Applications","pages":"1415 - 1423"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A kaleidoscopic hydrogel canvas for information encoding, encryption, and decryption via chemical-induced phase separation","authors":"Jun-Bo Hou \u0000 (,&nbsp;),&nbsp;Yue Zhao \u0000 (,&nbsp;)","doi":"10.1007/s40843-024-3195-6","DOIUrl":"10.1007/s40843-024-3195-6","url":null,"abstract":"<div><p>Constructing an information storage or communication system, where countless pieces of information can be hidden like a canvas and revealed on demand through specific stimuli or decoding rules, is significant. In the present study, we developed a hydrogel canvas that leverages non-covalent interactions to induce phase separation in the polymer matrix, creating various “paintings”, including custom messages, using different chemical inks. Our strategy focuses on designing small molecule inks, with varying affinities with the hydrogel and specific responsiveness to stimuli, to achieve multiple changes such as color shifts, fluorescence emission, and dynamic optical image evolution. This skips the typical design approaches, such as incorporating responsive fluorophores into polymers for color emission through grafting or copolymerization, and thus avoids the complex processes involved in modifying and synthesizing functional polymers, along with the uncertainties in material properties that these processes bring.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 2","pages":"571 - 580"},"PeriodicalIF":6.8,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}