Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Yangyang Zhao,Haowei Li,Xiaoyu Wang,Tao Cong,Yijian Wang,Hesheng Zheng,Zhongyi Zhao,Xingchen Feng,Juntao Feng,Pei Wang,Kai Yang,Xifeng Ding
Solid oxide electrolysis cells (SOECs), featuring high current density and Faradaic efficiency, have been extensively recognized for CO 2 electrolysis abilities. However, it is a challenge to find high performance electrode materials with excellent catalytic activity and preferable stability. Herin, hetero-structured perovskite with exsolved Co-Fe nanoparticles is developed via in - situ reduction of the (Ba 0.9 K 0.1 ) 0.9 Co 0.5 Fe 0.4 Nb 0.1 O 3- δ ((BK) 0.9 CFNb). The corresponding SOEC R-(BK) 0.9 CFNb/LSGM/LSCF achieves excellent electrochemical performance with a current density of 0.813 A cm −2 at 1.5 V and 800 °C, which is 30 % higher than the counterpart with untreated (BK) 0.9 CFNb cathode. Its high catalytic activity is attributed to electron feeding effect of in situ exsolved Co-Fe nanoparticles and enhanced CO 2 adsorption with high concentration of oxygen vacancies in perovskite substrate surface. Moreover, the R-(BK) 0.9 CFNb-cell shows much better stability than parent (BK) 0.9 CFNb-cell, which is ascribed to the structural anchoring of the alloy nanoparticles. This study provide an attractive strategy for the future development of SOECs.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
ENERGY & FUELS
·
2022
·
IF 4.654
Shichun Liu,Mingwei Zhao,Yining Wu,Zhibin Gao,Caili Dai,Peng Liu
In order to further increase the temperature and shear resistance of a conventional CO2-sensitive clean fracturing fluid, a novel silica nanoparticle-reinforced CO2-sensitive fracturing fluid system was developed. The system was prepared with the compositions of 2.0 wt % N-[3-(dimethylamino) propyl] oleamide, 1.5 wt % sodium p-toluene sulfonate (NaPts), and 0.025 wt % silica nanoparticles. The rheological properties, temperature resistance, shear resistance, sand-carrying capacity, gel-breaking property, and core damage property of the system were systematically studied and evaluated. Compared with the conventional CO2-sensitive fracturing fluid system, the silica nanoparticle-reinforced CO2-sensitive fracturing fluid system has a better viscosity increase effect, and the zero-shear viscosity increases from 2900 to 3500 mPa·s. By adding and removing CO2, the viscosity of the system can be repeatedly converted from high to low, and the reusable property can be realized. After introducing silica nanoparticles, the temperature resistance ability of the clean fracturing fluid increases from 100 to 130 °C, the sand-carrying effect increases by 23%, rapid and thorough gel breaking occurs, and core damage is less than 13%. We expect that this study can broaden the application of the CO2-sensitive clean fracturing fluid in low permeability, high-temperature reservoirs and provide a theoretical basis for field applications.
研究领域:
石油工程
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材料科学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
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2025
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IF 3.2
Yanan Qiao,Ziqian Gao,Rui Hua,Houde She,Helin Ye,Lei Wang,Jingwei Huang,Qizhao Wang
In this study, hollow CuPc nanotubes were synthesized using a one-step solvothermal technique and loaded with TiO2 nanoparticles based on electrostatic interactions thereby overcome the inherent limitations of TiO2. The interfacial electric field formed by electrostatic coupling between CuPc and TiO2 effectively promoted spatial charge separation, as evidenced by a 12-fold enhancement in CO yield compared to pure TiO2 under visible light irradiation. Through energy band analysis and DFT calculations, the Z-type heterojunction mechanism between CuPc and TiO2 has been revealed. This mechanism facilitates the migration of photogenerated electrons from the conduction band of TiO2 to the lowest unoccupied molecular orbital of CuPc, while directing holes to migrate in the opposite direction. This spatial charge separation preserves the electrons’ high reduction capability, allowing them to participate effectively in the CO2 reduction reaction. This work highlights the potential of Z-scheme heterojunctions in designing efficient photocatalysts for CO2 reduction, offering a foundation for future research in advanced photocatalytic materials.
研究领域:
材料科学
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纳米技术
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环境科学
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物理化学
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能量转换
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产品关联
DOI
高影响因子
RARE METALS
·
2024
·Vol. 43
·期 4
·1513-1523
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IF 9.6
Zhang Ze-Yu,Wang Hai-Bin,Zhang Fei-Fei,Li Jing-Wei,Hu Xin-Zhuo,Yan Si-Wei,Bai Yi-Ming,Zhang Xun,Shen Gu-Rong,Yin Peng-Fei,Yang Jing,Dong Cun-Ku,Mao Jing,Liu Hui,Du Xi-Wen
Electrocatalysis of CO 2 reduction reaction is an effective way to convert CO 2 into high value-added products, but the selectivity of Cu-based catalysts for C 2+ products needs to be improved due to the high energy barrier of C–C coupling. Therefore, a viable catalyst design strategy to decrease energy barrier of C–C coupling should be put forward. Here, a nanocavity-enriched CuPd single atom alloy (CuPd SAA) catalyst is designed to promote C–C coupling process. The faradaic efficiency of CuPd SAA for ethylene and C 2+ reaches 75.6% and 85.7% at − 0.7 V versus reversible hydrogen electrode (RHE), respectively. Based on the results given by in situ characterization, the porous hollow structure dramatically increases the ratio of the linear-bond *CO, thus enhancing the faradaic efficiency for ethylene. Density functional theory (DFT) calculation reveals that the Pd doping can regulate the electronic structure of neighboring Cu atoms to decrease the energy barrier of C–C coupling, further improving the faradaic efficiency. This work provides a new idea for designing catalyst with high selectivity for ethylene. Graphical abstract
研究领域:
材料科学
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化学
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电化学
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催化
✓ 已验证
DOI
高影响因子
Processes
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2025
·Vol. 13
·期 9
·2903
·
IF 2.8
Ping Guo,Yong Li,Yanbao Liu,Yunlong Zou
In this study, a new type of double crosslinked nanospheres (DCNPM-A) was developed to solve the problem of gas channeling caused by fracture development in the process of CO2oil displacement, and the microsphere system with delayed swelling was successfully synthesized by inverse micro lotion polymerization. The microsphere adopts a dual crosslinking structure of stable crosslinking agent (MBA) and unstable crosslinking agent (UCA), achieving intelligent sealing function of shallow low expansion and deep high temperature triggered secondary expansion. The successful preparation of microspheres was verified by characterization methods such as Zeta potential and SEM, and the effects of reaction temperature, time, initiator and crosslinking agent dosage on microsphere properties were systematically studied. The experimental results show that DCNPM-A microspheres exhibit excellent expansion performance, thermal stability, and acid resistance in acidic, high-temperature, and high mineralization environments. Their expansion ratio can reach 13.5 times, and they can maintain stability for more than 60 days in supercritical CO2environments. Core displacement experiments have confirmed that the microspheres have the best sealing performance in matrices with a permeability of 10 × 10−3μm2and fractures with a width of 0.03 mm. The combination of 0.8 PV injection volume, 0.5 mL·min−1injection rate, and continuous injection method significantly improved the plugging rate and recovery rate of CO2flooding. This study provides new technical support for the efficient development of low-permeability fractured reservoirs.
研究领域:
石油工程
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提高采收率
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高分子材料科学
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油藏工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
·
IF 11.2
Qi Li,Shengchao Yang,Yufan Huang,Yuwei Liang,Chunling Hu,Min Wang,Zhiyong Liu,Yanlong Tai,Jichang Liu,Yongsheng Li
The difficulty in fabricating a multifaceted composite heterojunction system based on Cd x Zn 1- x S limits the enhancement of photocatalytic performance. In the present scrutiny, novel ZnO/Cd x Zn 1- x S/CdS composite heterojunctions are successfully prepared by the alkaline dissolution etching method. The internal electric field at the interface of I-type and Z-scheme heterojunction improved the effective charge separation. The ZC 8 sample exhibits excellent photocatalytic performance and the H 2 production efficiency is 15.67 mmol g −1 h −1 with good stability up to 82.9 % in 24-hour cycles. The performance of CH 4 and CO capacity in the CO 2 RR process is 3.47 μmol g −1 h −1 and 23.5 μmol g −1 h −1 , respectively. The photogenerated accelerated charge transport is then examined in detail by in situ X-ray photoelectron spectroscopy (ISXPS) and density functional theory (DFT) calculations. This work presents a new idea for the synthesis of Cd x Zn 1- x S solid-solution-based materials and provides a solid reference for the detailed mechanism regarding the electric field at the heterojunction interface.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Carbon Neutrality
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2024
·Vol. 3
·期 1
·1-20
·
IF 0
Guo Yafei,Gao Yuxuan,Guo Benshuai,Luo Yangna,Zhao Guoyang,Sun Jian,Li Weiling,Wang Ruilin,Zhao Chuanwen
Electrochemical CO 2 reduction (ECR) to value-added products is regarded as a sustainable strategy to mitigate global warming and energy crisis, and designing highly efficient and robust catalysts is essential. In this work, transition metal sulfides (TMS)-decorated CuS microflower-like structures were prepared via the one-pot hydrothermal synthesis method for ECR to CO, and the influence of TMS doping on ECR performance was demonstrated. Characterization of the catalysts was performed using XRD, FESEM-EDS, N 2 physisorption, and XPS, revealing the successful loading of TMS, the formation of microflower-like architectures and the generation of sulfur vacancies. Electrochemical tests demonstrated that doping ZnS, Bi 2 S 3 , CdS and MoS 2 improved the intrinsic CO 2 reduction activity of the CuS catalyst. Particularly, the MoS 2 -CuS composite catalyst with imperfect petal-like structure showed uniform distribution of edge Mo sites, which worked synergistically with the formed grain boundaries (GBs) and undercoordinated S vacancy sites in promoting CO 2 activation, stabilizing * COOH adsorption, facilitating * CO desorption, and lowering the energy barrier of the potential-limiting step for improved CO selectivity. The MoS 2 -CuS catalyst achieved a maximum CO selectivity of 83.2% at –0.6 V versus the reversible hydrogen electrode (RHE) and a high CO cathodic energetic efficiency of 100%. At this potential, the catalyst maintained stable catalytic activity and CO selectivity during a 333-min electrolysis process. The findings will offer a promising avenue for the development of efficient and stable catalysts for CO production from ECR.
研究领域:
材料科学
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环境科学
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能源化学
✓ 已验证
DOI
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Chao Du,Yunfei Ge,Junyi Qian,Zhijie Zhang
Solar-driven CO 2 conversion into reusable carbon forms is an attractive strategy to. reduce CO 2 emissions and provide feedstocks for industrial production. However, most of present catalysts suffer from poor light utilization and rapid charge recombination, thus severely restricting the efficiency of CO 2 photoreduction. Herein, an innovative strategy of integrating Cs 3 Bi 2 Br 9 and MnO 2 via self-assembly was established, with the aim of designing a multimodal photothermal catalyst for CO 2 reduction under full spectrum. In this hybrid, MnO 2 could combine with CBB to create an S-scheme photocatalyst with promoted carrier separation, and simultaneously acted as a “heater” to facilitate CO 2 photoreduction by effective photothermal conversion. Upon UV–vis-NIR illumination, the CBB/MnO 2 hybrid presented an impressively high CO production rate (R CO = 189.75μmol g −1 h −1 ). Theoretical calculations combined with experimental tests indicated that the excellent catalytic activity of CBB/MnO 2 could be ascribed to the synergetic effect of greatly increased carrier transfer and high photothermal conversion efficiency, resulting in considerably enhanced solar-light-driven photothermocatalysis with no extra heat input. The as-proposed catalyst in this study provides a novel and effective approach to develop highly efficient photothermal catalysts for solar-to-fuel applications.
研究领域:
催化化学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2021
·Vol. 23
·期 8
·4690-4699
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IF 3.676
Zhengyan Zhao,Wei Liu,Yantao Shi,Heming Zhang,Xuedan Song,Wenzhe Shang,Ce Hao
We report a combination of experimental and computational mechanistic studies for the photoreduction of CO2 to CO with water, catalyzed by single-atom Fe supported on graphitic carbon nitride (g-C3N4). Density functional theory (DFT) and time-dependent DFT (TDDFT) methods were utilized to explore the behavior of single-atom Fe in g-C3N4, which is of vital importance to the understanding of the CO2 reduction reaction (CO2RR) mechanism. The calculation results reveal that the rate-limiting step of the hydrogen-bonded complex in the absence of Fe atoms is the cleavage of C–O bonds in COOH radicals during the whole CO2RR, which includes the photophysical and photochemical processes. The presence of Fe atoms not only activated CO2 in the ground state and increased the rate constant of the limiting step in the photophysical process, but also functioned as the catalytic active center, lowering the reaction barrier of the C–O bond cleavage in COOH˙ in the photochemical process and resulting in improved photocatalytic activity. In addition, DFT calculations further demonstrated that the electron and proton transfer involved in the photophysical and photochemical processes is closely related to and induced by the hydrogen bonds in the excited state.
研究领域:
材料科学
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催化化学
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环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Bingchen Chen,Chao Wan,Xueting Kang,Mingqing Chen,Chunfang Zhang,Yunxiang Bai,Liangliang Dong
In this study, a facile and scalable in situ growth method was used to synthesize ZIF-8@GO composites. The obtained ZIF-8@GO were blended with a CO 2 -philic, comb copolymer yielding a series of mixed matrix membranes (MMMs), which were evaluated for their performance in separation of CO 2 /N 2 . The effect of reaction time for ZIF-8@GO composites on gas separation performance was systematically investigated. Pure and mixture gas permeation tests indicated that MMM with ZIF-8@GO by in situ growth for 6 h exhibited the largest improvement (CO 2 permeability: 475 Barrer and CO 2 /N 2 selectivity: 58.2) compared with pure polymers, with the overall CO 2 /N 2 separation performance exceeding the 2008 polymer upper bound. Our strategy that the in situ growth of ZIF-8 on GO provides an effective way to design MMMs with well filler dispersion, structural features and separation performance.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
·
IF 20.2
Shan Hu,Panzhe Qiao,Xinming Liang,Guiming Ba,Xiaolong Zu,Huilin Hu,Jinhua Ye,Defa Wang
Photoreduction of CO 2 and H 2 O into fuels and value-added chemicals is a promising green technology for solar-to-chemical conversion. However, improving the conversion efficiency with regulated product selectivity is a big challenge due to the sluggish dynamic transfer and insufficient active sites. Herein, we report on Pt single atoms anchored porous C 3 N 4 nanosheet photocatalyst (Pt 1 @CN) with Pt–N 4 coordination for stable and efficient CO 2 photoreduction using H 2 O as reductant. The Pt 1 @CN exhibits an evolution rate of 84.8 μmol g −1 h −1 with nearly 100% CO selectivity, outperforming most previous C 3 N 4 -based single-atom photocatalysts. Experimental and DFT calculation results reveal that the Pt–N 4 coordinated active sites promote the photogenerated electron transfer, CO 2 adsorption/activation, *COOH generation, and *CO desorption, thus accounting for the significantly improved CO 2 photoreduction activity with ∼100% CO selectivity. This study provides a deep insight into the significant roles of single-atom active sites in enhancing the CO 2 photoreduction activity and regulating the product selectivity.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Ren Bohua,Zhang Xiaowen,Yang Leixin,Wen Guobin,Dong Silong,Xiong Haoyang,Liu Yiyin,Duan Xiaoman,Tan Lichao,Wang Xin,Chen Zhongwei
Electrocatalytic upgrade of CO 2 offers a promising approach for recycling of global CO 2 emissions, facilitating the achievement of carbon neutrality. Nevertheless, direct utilization of practical dilute CO 2 is urgently important yet rather difficult, which is hindered by the balance of reaction kinetics and mass transport of CO 2 to the catalytic sites. Herein, we propose coordinating the local environment and active catalyst by constructing covalent organic frameworks (COF) on single-atomic In-doped Cu 2 O (In 1 @Cu 2 O) for a high tolerance of CO 2 inlet concentrations (15% to 100%). The optimized amounts of COF functionalized by the trifluoromethyl group act as the local CO 2 /CO diffusion channels via steric confinement effects and C···F electronic effects. Besides, the formation of key intermediates for C 2+ products is greatly facilitated by the promoted COOH adsorption. Hence, a total current of 81.7 A is realized in a 4 × 100 cm 2 electrolyzer stack with over 770 mmol/h C 2+ products at an inlet of dilute CO 2 . Such a electrode architecture sheds light on the dilute CO 2 electrolysis at the potential industrial scale.
研究领域:
电化学
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环境催化
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能源材料
·
碳中和
·
工业电解
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）