WATER RESEARCH
·
2019
·
IF 7.913
Dongni Sun,Xiaoting Hong,Keming Wu,K.S. Hui,Yingying Du,K.N. Hui
Electro-oxidation using RuO 2 –IrO 2 /Ti plate anode and electrocoagulation using iron plate anode were widely applied to remove ammonia and phosphate in an aquatic environment, respectively. In this work, we designed magnetically bound ZVI microparticles on RuO 2 –IrO 2 /Ti plate as a composite electrode for the simultaneous removal of ammonia and phosphate from aqueous solution via combined EO and EC (EO/EC) processes. We present a series of experiments to study such simultaneous removal under an electric field via the EO/EC process. In the electrochemical unit, mZVI-RuO 2 -IrO 2 /Ti, mZVI-graphite, and RuO 2 –IrO 2 /Ti electrodes were used as anodes. The influence of applied voltage, initial pH, zero-valent iron dosage, reaction temperature, and organic compounds on the EO/EC process was also examined. Ammonia and phosphate could be completely removed at an applied voltage of 10 V, pH of 7, zero-valent iron dosage of 0.1 g, and reaction temperature of 35 °C using mZVI-RuO 2 -IrO 2 /Ti anode when influent ammonia and phosphate concentrations is 200 and 100 mg L −1 . Ammonia degradation was consistent with pseudo-zero-order kinetic model. The characterization was analyzed by scanning electron microscope-energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Hence, the mZVI-RuO 2 -IrO 2 /Ti electrode can be used for efficient simultaneous removal of ammonia and phosphate.
研究领域:
环境科学
·
电化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yun Wu,Rui Yao,Qiang Zhao,Jinping Li,Guang Liu
The development of high-performance and durable Ru-based electrocatalysts in proton exchange membrane (PEM) water electrolyzers for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) remains a huge challenge due to the severe catalyst’s corrosion and high reaction overpotential in acid media. Herein, we reported a synergistic strategy of effectively combining hetero-atom doping and oxygen vacancy in the La-doped RuO 2 nanocrystals, successfully realized by a hydrothermal and followed annealing process aiming for efficiently overall water splitting. The as-obtained La-doped RuO 2 nanocrystals demonstrate superior electrocatalytic performances with ultra-low overpotential of 208 mV for OER and 71 mV for HER at the current density of 10 mA/cm 2 together with robust long-term stability in 0.5 M H 2 SO 4 electrolyte, which are 222 and 15 mV lower in overpotentials than that of bare RuO 2 electrocatalyst. Moreover, the La-doped RuO 2 nanocrystals only require a cell voltage of 1.53 V to drive the overall water splitting reaction and exhibit a remarkable stability. Density functional theory (DFT) calculations further reveal that the synergistic effect of La doping and oxygen vacancy engineering could tune the d-band center of Ru active sites and optimize the Gibbs free energy of intermediate state, thus enhancing the activity of RuO 2 . Such synergistic strategy of aliovalent doping and vacancy engineering for much enhanced acid electrocatalysis may offer important referential values for exploring efficient electrocatalysts towards overall water splitting in acidic media.
研究领域:
材料科学
·
电催化
·
能源转换
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Luokai Wang,Yuexue Mai,Junzheng Zhang,Chujin Ruan,Jiayan Hu,Kai Ye,Yan He,Dongsheng Wang,Lulu Jin,Zhengwei Mao,Chenggang Yi,Pingfeng Yu
The emergence of multidrug-resistant pathogens has created a global public health challenge, demanding the development of efficient and safe therapeutic strategies. Herein, we present a novel nanozyme-armed phage system (PA3@RuO 2 ) designed to combat chronic Pseudomonas aeruginosa infections. This system combines the precision of phage therapy with an anti-inflammatory approach. The phage component, PA3, maintains its ability to specifically target and efficiently lyse a broad spectrum of P. aeruginosa strains. Meanwhile, RuO 2 nanozymes with reactive oxygen species-scavenging capabilities localize to infection sites, mitigating inflammation and hypoxia. This dual action enables bacterial clearance and inflammation reduction while ensuring the biocompatibility of PA3@RuO 2 with healthy tissues. In vivo studies further confirm the effectiveness of PA3@RuO 2 in treating chronic P. aeruginosa -induced wound infections and promoting tissue repair. Overall, these findings suggest that PA3@RuO 2 holds promise for developing non-antibiotic antibacterial therapies and advanced disinfection approaches.
研究领域:
微生物学
·
噬菌体疗法
·
纳米技术
·
传染病学
·
抗炎研究
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-9
·
IF 12.121
Liu Kaipeng,Zhao Xintian,Ren Guoqing,Yang Tao,Ren Yujing,Lee Adam Fraser,Su Yang,Pan Xiaoli,Zhang Jingcai,Chen Zhiqiang,Yang Jingyi,Liu Xiaoyan,Zhou Tong,Xi Wei,Luo Jun,Zeng Chaobin,Matsumoto Hiroaki,Liu Wei,Jiang Qike,Wilson Karen,Wang Aiqin,Qiao Botao,Li Weizhen,Zhang Tao
Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially in a simple and scalable way, remains a formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO 2 powders by physical mixing of sub-micron RuO 2 aggregates with a MgAl 1.2 Fe 0.8 O 4 spinel. Atomically dispersed Ru is confirmed by aberration-corrected scanning transmission electron microscopy and X-ray absorption spectroscopy. Detailed studies reveal that the dispersion process does not arise from a gas atom trapping mechanism, but rather from anti-Ostwald ripening promoted by a strong covalent metal-support interaction. This synthetic strategy is simple and amenable to the large-scale manufacture of thermally stable SACs for industrial applications.
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Zongshan Lin,Shilong Liu,Yonggang Liu,Zhe Liu,Shuidong Zhang,Xiaofeng Zhang,Yong Tian,Zhenghua Tang
Developing efficient, robust, and cost-effective catalysts to boost the electrocatalytic properties of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) for overall water splitting is fundamentally important yet very challenging. Herein, we report a facile method to prepare Ru-based aerogels for HER, OER, and water electrolysis . Specifically, Ru aerogel exhibits comparable HER performance with Pt/C, evidenced by a close overpotential at 10 mA cm −2 , a smaller Tafel slope, and an outperformed long-term stability. Among a series of RuCo aerogels, the Ru 0.7 Co 0.3 aerogel has the best OER performance superior to the RuO 2 benchmark catalyst, with a very small overpotential of 272 mV at 10 mA cm −2 , a low Tafel slope value of 41.6 mV dec −1 , and the improved long-term durability. The excellent OER performance of the Ru 0.7 Co 0.3 aerogel is mainly attributed to the RuCo synergistic catalytic effect, the abundant oxygen vacancies , and the structural merits of the sample. Notably, in the practical overall water splitting test, the combined Ru and Ru 0.7 Co 0.3 aerogel catalyst outperforms the Pt/C + RuO 2 couple. This study can shed light on preparation of metal aerogel-based bifunctional electrocatalyst for overall water splitting and beyond.
研究领域:
材料科学
·
电化学
·
催化
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2023
·Vol. 6
·期 1
·1-9
·
IF 20.1
Du Peng,Lin Chaoliang,He Xian,Zheng Zhichuan,Xie Xinyu,Huang Kai,Lei Ming,Tang Haolin
Developing relatively cost-effective and high-performance Ru-based composites as electrocatalysts for acidic oxygen evolution has become the critical step toward emerging renewable energy conversion, in which exploring controllable synthetic strategies and investigating the intrinsic nature by non-metallic interfacial modulation is highly desirable. In this work, a facile tandem process is proposed by ball-milling and thermal annealing for the scalable synthesis of Ru–O–Se nanocomposites with in-situ formed crystalline RuSe 2 and metallic Ru heterostructures on a RuO 2 substrate. The optimized RuO x Se y -800 sample has been proved to have an excellent OER activity and long-term stability in an acidic electrolyte due to its suitable microscopic morphology and phase composition, along with a relatively smaller Tafel slope of 45.4 mV dec −1 compared with commercial RuO 2 and most similar catalysts reported in the literature. The outstanding acidic OER performance can be ascribed to the enhanced electron transfer and more active site exposure by controllable selenization. This work paves a novel way for the design and large-scale production of various non-metallic modified composite catalysts for extensive applications of energy conversion and storage.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xiaoqin Li,Yuqi Su,Ronghai Bai,Qibin Li
Electrochemical oxidation (EO) effectively degrades phenolic compounds in phenol-containing wastewater, but the chlorinated byproducts generated during the process raised concerns. In this study, degradation efficiency of phenol and formation rules of chlorinated byproducts in the presence of chlorine (Cl − )were systematically and comparatively studied in two EO systems with boron-doped diamond (BDD) and ruthenium-iridium-coated titanium (RuO 2 -IrO 2 /Ti) as anodes. The results showed that Cl − significantly enhanced phenol degradation efficiency of the two anode systems. At the same Cl − concentration, degradation efficiency of BDD-EO was superior to that of RuO 2 -IrO 2 /Ti-EO, it had a higher apparent removal rate for phenolic compounds, including phenol, 4-NP, 4-CP, BPA, and RES, and was less affected by coexisting ions. However, in the BDD-EO system, the total amount of produced chlorinated byproducts (3.593 mM Cl) was approximately 50 times greater than that produced in the RuO 2 -IrO 2 /Ti-EO system (0.0723 mM Cl). These chlorinated byproducts included inorganic chloro-byproducts (ClO 3 − and ClO 4 − ) and organic chloro-byproducts (such as chloroform, trichloroacetic acid, and trichloroacetaldehyde). The results confirmed that HOCl generated by the oxidation of Cl − on BDD and RuO 2 -IrO 2 /Ti anodes through the • OH/direct electron transfer was the key active species for enhancing the phenol degradation and driving the formation of chlorinated byproducts. The toxicity assessment shows that the additive toxicity of inorganic chloro-byproducts in the RuO 2 -IrO 2 /Ti-EO system is approximately 1/57 that in the BDD-EO system, and the toxicity of organic chloro-byproducts is approximately 1/18. Selecting the appropriate anode is therefore critical to balance treatment efficiency with the need to minimize toxic chlorinated byproducts.
研究领域:
环境工程
·
电化学
·
水处理技术
·
化学毒理学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2022
·Vol. 14
·期 7
·1044
·
IF 3.53
Miao Deng,Keming Wu,Tao Yang,Deyou Yu,Gaojie Liu,Shuai Gong,Dongni Sun,Michal Petru
The Electro-Fenton (E-Fenton) technique has shown great potential in wastewater treatment, while the sustainable and continuing supply of Fe2+remains challenging. Herein, we demonstrate the construction of a novel E-Fenton system by magnetically decorating zero-valent iron (ZVI) onto a RuO2-IrO2/Ti (ZVI-RuO2-IrO2/Ti) electrode for high-efficient treatment of pharmaceutical wastewater, which is considerably refractory and harmful to conventional biological processes. By using ZVI as a durable source of Fe(II) irons, 78.69% of COD and 76.40% of TOC may be rapidly removed by the developed ZVI-RuO2-IrO2/Ti electrode, while the ZVI-RuO2-IrO2/Ti electrode using ZVI only reduces 35.64% of COD under optimized conditions at initial COD and TOC values of 5500 mg/L and 4300 mg/L, respectively. Moreover, the increase in BOD5/COD from 0.21 to 0.52 highlights the enhanced biodegradability of the treated effluent. The analysis of a simultaneously formed precipitation on electrodes suggests that the coagulation process dominated by Fe3+/Fe2+also plays a non-negligible role in pharmaceutical wastewater treatment. In addition, the monitoring of the evolution of nitrogen elements and the formation of by-products in the E-Fenton process verifies its great capacity toward those organic pollutants found in pharmaceutical wastewater. Our study offers a practical solution for enhancing the performance of E-Fenton systems, and effectively treating refractory pharmaceutical wastewater.Keywords:electro-oxidation;zero-valent iron;pharmaceutical wastewater;E-Fenton process
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Liu Liangbin,Jin Lujie,Ren Renjie,Yan Wei,Fang Nan,Ji Yujin,Li Youyong,Zhuang Lin,Kong Qingyu,Hu Zhiwei,Shao Qi,Huang Xiaoqing
The development of highly active and CO-tolerant hydrogen oxidation reaction (HOR) electrocatalysts is of great significance for alkaline exchange membrane fuel cells (AEMFCs). Here, the designed atomically Ni anchored Ru/RuO 2 heterostructure nanosheets (Ni SA -Ru@RuO 2 NSs/C) exhibit enhanced activity and stability for HOR in alkaline media. The optimized electrocatalyst delivers a high CO-tolerant durability with 92.3% retention in the 1000 ppm CO concentration after 5000 s test. Moreover, the anode catalyst Ni SA -Ru@RuO 2 NSs/C assembled AEMFCs output a peak power density (PPD) and specific PPD of 1.76 W cm −2 and 17.6 W mg PGM −1 under the H 2 /O 2 condition and performed a long-term stability with negligible decay for 100 h at 0.5 A cm −2 for the AEMFCs. The relative mechanism studies reveal that the Ru/RuO 2 heterostructure nanosheet and dispersed Ni single atoms have optimized the *H and *OH adsorption simultaneously and weaken the *CO adsorption. Our work may offer a significant guideline on the rational design of high-performance HOR electrocatalyst for energy-related applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Yichen Liu,Yaqi Liu,Guicheng Luo,Zuozheng Xu,Xuhao Sun,Yuan Zhu,Shuyi Wu,Lizhe Liu,Yun Shan
To efficiently control oxygen evolution reaction (OER) at electrocatalysts holds enormous promise for large-scale production of clean energy, but faces the scarcity of practical regulation strategies due to underexplored catalytic mechanism. Herein, a facile and feasible strategy is developed involving metal-metal super-exchange interaction to manipulate the electronic state configuration of catalysts, and the as-synthesized Ni-doped Co-1,3,5-benzenetricarboxylic acid Metal-Organic Frameworks (MOFs) only require an overpotential as low as 260 mV to reach a large current of 200 mA cm −2 , which is much lower than 400 mV for the commercial RuO 2 catalyst. The introduced Ni atoms lead to more broadly occupied states and d-band center close to the Fermi energy level for the spin-polarization of the electrons in Co atoms, thus decreasing the orbital occupancy to facilitate the adsorption/desorption of the reaction intermediates and lowering the rate-determining step barrier to accelerate OER. Our findings have an important paradigm role in the design of electrocatalysts with high performance for oxygen evolution reaction.
研究领域:
电化学
·
催化
·
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Guidong Xu,Yifan Yang,Yanshuo Hui,Jingqian Wang,Shiyi Liu,Lin Fu,Jun Ma,Shuo Geng
The development of anode catalysts with high activity and stability is crucial for advancing proton exchange membrane water electrolysis (PEMWE). RuO 2 is a promising, cost-effective alternative to IrO 2 for the acidic oxygen evolution reaction (OER); however, its practical deployment is critically limited by ruthenium site dissolution and irreversible lattice oxygen loss. To address these challenges, a “rare-earth co-doping, electronic structure modulation, and reaction pathway steering” strategy was developed and successfully applied to synthesize Yb- and La-co-doped RuO 2 nanosheets (Yb,La-RuO 2 ) via a salt-templating method. The resulting catalyst exhibits outstanding OER performance in 0.1 M HClO 4 , delivering a low overpotential of 205 mV at 10 mA cm −2 and maintaining stable operation for 500 h. When employed as the anode catalyst in a PEMWE, it maintains stable operation at a current density of 500 mA cm −2 for 200 h. Density functional theory (DFT) and X-ray absorption spectroscopy reveal that La primarily serves as an electron donor to optimize the intrinsic activity of Ru sites, whereas Yb strengthens lattice oxygen bonding, thereby enhancing structural robustness. Their synergistic interaction modulates the electronic structure of Ru and reduces the covalency of Ru–O bonds. Furthermore, in situ attenuated total reflection–surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) analysis demonstrates that Yb and La co-doping shifts the reaction mechanism from the lattice oxygen mechanism (LOM)—a pathway prone to oxidative degradation—toward the more stable adsorbate evolution mechanism (AEM). This transition effectively suppresses Ru overoxidation and dissolution, significantly improving catalyst durability. This work presents a rational co-doping approach for designing highly efficient and acid-stable OER catalysts, offering valuable insights for the practical deployment of PEMWE technology.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 46
·2004345
·
IF 11.459
Rongtao Huang,Zhaoyang Ding,Bang-Ping Jiang,Zilan Luo,Ting Chen,Zhengxi Guo,Shi-Chen Ji,Hong Liang,Xing-Can Shen
Photoimmunotherapy (PIT) has shown enormous potential in not only eliminating primary tumors, but also inhibiting abscopal tumor growth. However, the efficacy of PIT is greatly limited by tumor hypoxia, which causes the attenuation of phototherapeutic efficacy and is a feature of the immunosuppressive tumor microenvironment (TME). In this study, one type of brand-new artificial metalloprotein nanoanalogues is developed via reasonable integration of a “phototherapy-enzymatic” RuO 2 and a model antigen, ovalbumin (OVA) for enhanced PIT of cancers, namely, RuO 2 -hybridized OVA nanoanalogues (RuO 2 @OVA NAs). The RuO 2 @OVA NAs exhibit remarkable photothermal/photodynamic capabilities under the near-infrared light irradiation. More importantly, the photoacoustic imaging and immunofluorescence staining confirm that RuO 2 @OVA NAs can remarkably alleviate hypoxia via in situ catalysis of hydrogen peroxide overexpressed in the TME to produce oxygen (O 2 ). This ushers a prospect of concurrently enhancing photodynamic therapy and reversing the immunosuppressive TME. Also, OVA, as a supplement to the immune stimulation induced by phototherapy, can activate immune responses. Finally, further combination with the cytotoxic T-lymphocyte-associated protein 4 checkpoint blockade is reported to effectively eliminate the primary tumor and inhibit distant tumor growth via the abscopal effect of antitumor immune responses, prolonging the survival.
研究领域:
肿瘤学
·
生物医学工程
·
免疫治疗
✓ 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）