Environmental Science-Water Research & Technology
·
2025
·
IF 3.1
Hongwei Sun,Zheng Li,Qiankun Du,Hanzhang Li,Hua Su,Jiamin Lin,Yuyi Zheng,Kaicong Cai,Shuangcheng Jiang,Changqing Liu,Chunshan Wu
The antibiotic residue in mariculture tailwater is an urgent environmental problem that needs to be addressed, and the development of effective treatment technologies is one of the solutions. Ferrate (Fe(Ⅵ))-acetylacetone (AA) has great potential for the degradation of antibiotics in mariculture tailwater. This study found that Fe(Ⅵ)-AA degradation of sulfadimethoxine (SDM) showed good results. When [Fe(Ⅵ)]0:[AA]0=8:1, the removal rate of SDM could reach 95.73% in 10 min, which is a 66.01% enhancement over the result of Fe(Ⅵ) alone. Under the actual mariculture tailwater conditions, Fe(Ⅵ)-AA still removed 77.9% of SDM in 10 min, which is still 36.4% higher than the degradation result of Fe(Ⅵ) alone, indicating that it has good potential for application. A series of quenching experiments showed that high-valent iron (Fe(V), Fe(Ⅳ)) was the main active substance in the degradation of SDM by Fe(Ⅵ)-AA. ECOSAR analysis showed that most of the by-products produced by Fe(Ⅵ)-AA degradation of SDM were at non-toxic and low-toxicity levels, proving that Fe(Ⅵ)-AA is a green and efficient water treatment technology.
研究领域:
环境科学
·
水产养殖学
·
药理学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaojun Chu,Ruichen Geng,Zekai Shen,Yaxuan Li,Xiaorui Fan,Zhaoyou Zhu,Yinglong Wang,Shuli Yin
Electrocatalytic glycerol oxidation reaction (GOR) is an economical and promising technology producing high-value chemicals. However, the development of highly active GOR electrocatalysts remains a critical issue. In this work, PdFe bimetallene catalyst was synthesized by a one-pot method. Owing to its abundant crystal defects, high surface energy and expanded surface active sites, defect-rich crimped perforated PdFe bimetallene exhibits excellent activity and stability toward GOR. PdFe bimetallene only requires potential of 0.68 and 0.81 V to provide currents of 100 and 200 mA cm −2 , respectively. The Faradic efficiency, selectivity and yield of glycolic acid were 98.3 %, 92.7 % and 292.5 μg h −1 mmol, respectively. This work provides valuable guidance for developing GOR electrocatalysts and new ideas and directions for high-value electrocatalytic conversion of biomass glycerol.
研究领域:
材料科学
·
电化学
·
催化反应
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Yi-Ran Du,Xiao-Qiang Li,Xian-Xia Yang,Guo-Yi Duan,Yong-Mei Chen,Bao-Hua Xu
In this study, the copper-nickel (Cu–Ni) bimetallic electrocatalysts for electrochemical CO 2 reduction reaction(CO 2 RR) are fabricated by taking the finely designed poly(ionic liquids) (PIL) containing abundant Salen and imidazolium chelating sites as the surficial layer, wherein Cu–Ni, PIL–Cu and PIL–Ni interaction can be readily regulated by different synthetic scheme. As a proof of concept, Cu@Salen-PIL@Ni(NO 3 ) 2 and Cu@Salen-PIL(Ni) hybrids differ significantly in the types and distribution of Ni species and Cu species at the surface, thereby delivering distinct Cu–Ni cooperation fashion for the CO 2 RR. Remarkably, Cu@Salen-PIL@Ni(NO 3 ) 2 provides a C2+ faradaic efficiency (FE C2+ ) of 80.9% with partial current density ( j C 2+ ) of 262.9 mA cm −2 at −0.80 V (versus reversible hydrogen electrode, RHE) in 1 m KOH in a flow cell, while Cu@Salen-PIL(Ni) delivers the optimal FE C2+ of 63.8% at j C2+ of 146.7 mA cm −2 at −0.78 V. Mechanistic studies indicates that the presence of Cu–Ni interfaces in Cu@Salen-PIL@Ni(NO 3 ) 2 accounts for the preserve of high-valence Cu(I) species under CO 2 RR conditions. It results in a high activity of both CO 2 -to-CO conversion and C–C coupling while inhibition of the competitive HER.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Kecheng Wen,Yanting Zhang,Jinhui Xu,Xinyu Wang,Tinghui Zheng,Zhiwei Yang,Guozhong Zheng,Yuan Huang,Jing Zhang
A magnetic field (MF) was applied to selectively enhance the generation of reactive species in a ferrate (Fe(VI)) water treatment system, effectively mitigating the limitations associated with the selective oxidation of Fe(VI) for organic matter. An MF was introduced into Fe(VI) and Fe(VI)/H 2 O 2 systems, and a significant difference was observed in its enhancement of the removal efficiency of different types of contaminants. The results of radical scavenging experiments, high-valent Fe inhibition experiments, and methyl phenyl sulfoxide ( PMSO) chemical probe experiments indicated that the MF promoted the production of Fe(V)/Fe(IV) in the Fe(VI) system and ·O 2 – in the Fe(VI)/H 2 O 2 system, which modulated the generation of active species. Subsequently, by monitoring the change in product quantities during the decomposition of Fe(VI) and considering the theory of paramagnetism, it was hypothesized that the MF weakened the pathways for further self-reduction of Fe(V)/Fe(IV) in the Fe(VI) system and strengthened these pathways in the Fe(VI)/H 2 O 2 system: Fe(IV) → Fe(III) → ·O 2 − . Furthermore, the systems enhanced by the MF were more resistant to partial anions and environmental interference in water quality experiments. This suggested that the MF modulation method may have significant potential for practical applications.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 25
·11167-11176
·
IF 3.553
Zhang Jiyun,Song Yanyan,Dong Xianhui,Jiang Haoyang,Tang Jianguo,Li Haidong
We, herein, report the synthesis of umbrella-like CdS single crystal with exposed high-activity (002) facets first time by using a one-step hydrothermal method with cadmium acetate dihydrate (Cd(CH 3 COO) 2 ·2H 2 O) and ammonium thiocyanate (NH 4 SCN), and its possible growth mechanism was discussed. As a contrast, CdS nanoparticles with different morphologies were also synthesized. The morphology, composition and photocatalytic property of as-synthesized samples were determined by XRD, SEM, TEM, UV–Vis DRS, PL and photocurrent tests, respectively. The results show that umbrella-like CdS under UV (20 min) and visible light (80 min) irradiation, the removal rate of rhodamine B was as high as 99.1% and 99.3%, respectively. Moreover, even though the particle size of umbrella-like CdS particle is larger than as-synthesized CdS nanospheres, it still shows excellent photocatalytic degradation activity due to its exposed high-energy (002) facets. And its excellent application prospects are conceivable. The current work provides a new paradigm in material morphology design, especially in the construction of highly active surfaces for photocatalysis and photoelectric conversion.
研究领域:
材料科学
·
光催化领域
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2014
·Vol. 6
·期 8
·2221-2231
·
IF 2.505
Dong-Bin Fan,Gai-Yun Li,Te-Fu Qin,Fu-Xiang Chu
The objective of this research was to provide a useful approach of polymer synthesis for accelerating the fast cure of phenol-urea-formaldehyde (PUF) resin as wood adhesive by optimizing its structure and composition. The PUF resins containing high contents of very reactive groups such aspara-methylol groups were synthesized by reacting methylolurea, phenol, and formaldehyde in the presence of magnesium oxide (MgO) as catalyst. The effects of synthesis parameters including F/(P + U), OH/P, and MgO/P mole ratios on the structure, composition, curing characteristics, and their relationships of PUF resins were investigated. The results indicated that MgO seemed to be an efficacious catalyst for PUF resin synthesis and promote its faster cure. The increase in the F/(P + U) mole ratio or/and OH/P mole ratio appeared to be beneficial for the formation ofpara-methylol groups and cocondensed methylene linkages between phenolic methylol groups and urea units, and for the removal of unreacted urea. In case of Catalyst/P mole ratio, an appropriate dosage of added metal-ion was very important for synthesizing the high-content reactive groups of PUF resins, otherwise leading to the reverse effects.Keywords:phenol-urea-formaldehyde resin;catalyst;synthesis;chemical structure;high-content reactive group;fast cure
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Yi-Tong Wang,Xiao-Man Wang,Di Gao,Fu-Ping Wang,Ya-Nan Zeng,Jun-Guo Li,Li-Qun Jiang,Qing Yu,Rui Ji,Le-Le Kang,Ya-Jun Wang,Zhen Fang
In this study, nanocatalysts for biodiesel production were prepared via wet impregnation of blast furnace dust (BFD) in Na 2 CO 3 (Na-BFD) and CaCO 3 (Ca-BFD) suspension solutions and calcination at 500 and 600 °C, respectively. Biodiesel yields of 100.0 wt% (Na-BFD 500 ) and 98.3 wt% (Ca-BFD 600 ) were achieved at 65 °C. Synthesized catalysts showed outstanding activity and recyclability, due to the transition of CaCO 3 , Na 2 CO 3 and Fe 2 O 3 to nanocrystals of NaFeO 2 (29.9 nm), Ca 2 Fe 2 O 5 (10.5 nm), CaO (100.1 nm) and Ca 2 Fe 2 O 5 (50.0 nm). Na-BFD 500 achieved 95.8 wt% biodiesel yield with 16 cycles, whereas Ca-BFD 600 reached 94.1 wt% biodiesel yield with 7 cycles via magnetic separation. BFD containing convertible magnetic and active components (Fe 2 O 3 and CaCO 3 ) was an ideal raw material to synthesize catalyst for biodiesel production with high catalytic efficiency and easy separation. The study provided a practical utilization of industrial solid waste for biodiesel production.
研究领域:
能源科学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2013
·Vol. 3
·期 1
·1-7
·
IF 2.927
Wang Chengming,Ma Liang,Liao Lingwen,Bai Song,Long Ran,Zuo Ming,Xiong Yujie
It remains a grand challenge to achieve both high activity and durability in Pt electrocatalysts for oxygen reduction reaction (ORR) in fuel cells. Here we develop a class of Pt highly concave cubic (HCC) nanocrystals, which are enriched with high-index facets, to enable high ORR activity. The durability of HCC nanocrystals can be significantly improved via assembly with graphene. Meanwhile, the unique hybrid structure displays further enhanced specific activity, which is 7-fold greater than the state-of-the-art Pt/C catalysts. Strikingly, it exhibits impressive performance in terms of half-wave potential (E 1/2 ). The E 1/2 of 0.967 V at the Pt loading as low as 46 μg cm −2 , which stands as 63 mV higher than that of the Pt/C catalysts, is slightly superior to the record observed for the most active porous Pt-Ni catalyst in literature. This work paves the way to designing high-performance electrocatalysts by modulating their surface and interface with loading substrates.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 47
·8214-8220
·
IF 3.117
Tao-Tao Lv,Hui-Xiang Wang,Xiao-Bo Ren,Lian-Cheng Wang,Rui-Min Ding,Jing-Pei Cao,Bao-Liang Lv
For crystalline catalysts with special morphology, the corners and edges are usually of high activities due to the presence of unsaturated coordination sites, so it will be an ideal strategy to promote catalytic properties by only keeping the corners and edges of such kinds of catalysts. In this work, a Cu2O tetradecahedral nanocage with plenty of corners and edges was formed by selectively etching the (111) and (100) facets on the basis of a simple top-down method, in which SDS was used as a protective agent to keep the active corners and edges while hydroxylamine hydrochloride was used as a reducing agent and an etchant. The decomposition of ammonium perchlorate (AP) was used as a probe reaction to test its catalytic performance. It was found that the low temperature decomposition (LTD) and high temperature decomposition (HTD) were reduced by 27.1 °C and 107 °C, respectively, and the heat release increased by three times in comparison with pure AP. The Cu2O nanocage exhibits excellent activity and high catalytic performance in the reaction. This work provides us an effective AP thermal decomposition catalyst and a simple strategy to fabricate a hollow structure with low-energy facets etched and highly active facets exposed.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Peng He,Chunyao Gu,Binlin Tang,Yihao Zhou,Min Gan,Jianyu Zhu
With excellent photoelectric properties and catalytic stability, carbon nitride and its derivatives are drawing increasing interest in persulfate activation for treating emerging pollutants in wastewater. In the present work, the synthesized cobalt-doped C 3 N 5 (C 3 N 5 -Co) has well-defined surface properties and excellent performance in SMX degradation by activating peroxymonosulfate (PMS) with the assistance of visible light, and the removal rate can reach 99.57 % within 20 min. Moreover, the system shows superior operability over a wide pH range with promising catalytic stability and environmental suitability. Quenching experiments and EPR spectroscopic indicated that high-valent cobalt oxide (Co(IV)) species, SO 4 •- , •OH, O 2 •- , and 1 O 2 work in C 3 N 5 -Co 0.59 /PMS/SMX-vis combined system. The conversion of the oxidation product phenyl methyl sulfoxide (PMSO 2 ) > 98 % using phenyl methyl sulfoxide (PMSO) as a probe agent demonstrated that high-valent cobalt oxide (Co(IV)) species as the major active species dominated the degradation process of SMX. The Co(II) species on the surface of C3N5-Co0.59 worked as a direct driver to rapidly and efficiently activate the PMS, producing various active species involved in the degradation process, while the photo-carriers generated by visible radiation act as another contributing force to regenerate Co(II) species and activate PMS. This study presented the heterogeneous C 3 N 5 -Co 0.59 /PMS/SMX-vis system is an effective strategy for the degradation of emerging pollutants and provides a promising novel ideal for the treatment of various organic pollutants in wastewater.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Cheng Zhou,Lina Wang,Junting Sun,Hongbo Wu,Jian Zhang,Zhong Li
Enhancing oxygen reduction reaction (ORR) efficiency relies heavily on designing non-noble metal single-atom catalysts (SACs) with high-density and high-activity sites. For efficient ORR, Fe single atoms are precisely regulated and embedded into porous concave carbon derived from ZIF-8 in this work. ORR performance is significantly improved by the catalyst's concave design and microporous features, which optimize mass transfer and expose more active sites. Furthermore, the high-density, high-activity, and high-spin Fe (III) sites inside the material help to explain the increased intrinsic activity of the catalyst. Due to its unique carrier structure and iron site coordination, this catalyst exhibits outstanding ORR activity in a 0.1 M KOH solution. Additionally, zinc-air batteries constructed with this catalyst display a maximum peak power density of 151 mW cm −2 and a high specific capacity of 818 mAh g Zn −1 , outperforming Pt/C-based systems. This study presents a method for precursor treatment to efficiently and conveniently synthesize microporous carbon-based ORR SACs, aiming to advance ORR catalyst design.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ningzhao Shang,Wenjiong Li,Qingyao Wu,Huafan Li,Hongchao Wang,Chun Wang,Guoyi Bai
The electrocatalytic 5-hydroxymethylfurfural (HMF) oxidation reaction coupling with hydrogen evolution reaction (HER) serves as a promising strategy to generate both high-value-added products and clean energy, which is limited by the poor catalytic efficiency of bifunctional electrocatalysts and unclear electrocatalytic mechanism for HMF oxidation reaction. Herein, we fabricate a bifunctional NiSe 2 -NiMoO 4 heterostructure nanowire electrocatalyst for the conversion of HMF to 2,5-furandicarboxylic acid (FDCA) and simultaneous H 2 production. As expected, the NiSe 2 -NiMoO 4 exhibits outstanding activity and selectivity toward HMF oxidation reaction. In particular, at a potential of 1.50 V, the yield of FDCA could reach 98 % with a faradaic efficiency of 96.5 %, as well as excellent stability. Density functional theory calculation results demonstrate that the NiSe 2 -NiMoO 4 heterostructure could tune the adsorption energy of HMF, facilitate high-valence active species formation, and enhance electronic conductivity. Furthermore, a two-electrode electrolyzer assembled using NiSe 2 -NiMoO 4 as a bifunctional catalyst requires 1.53 V to acquire a current density of 50 mA cm −2 , which is 201 mV lower than that of water electrolysis. This work provides new insights for designing multifunctional catalysts for biomass upgrading coupled with hydrogen evolution.
研究领域:
催化化学
·
能源材料科学
✓ 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）