TREE PHYSIOLOGY
·
2024
·
IF 3.5
Liu Jian,Li Jing,Deng Chen,Liu Zhe,Yin Kexin,Zhang Ying,Zhao Ziyan,Zhao Rui,Zhao Nan,Zhou Xiaoyang,Chen Shaoliang
Nitrogen (N) plays an important role in mitigating salt stress in tree species. We investigate the genotypic differences in the uptake of ammonium (NH4+) and nitrate (NO3−) and the importance for salt tolerance in two contrasting poplars, salt-tolerant Populus euphratica and salt-sensitive P. popularis. Total N content, growth, and photosynthesis were significantly reduced in P. popularis after 7 days exposure to NaCl (100 mM) supplied with 1 mM NH4+ and 1 mM NO3−, while the salt effects were not pronounced in P. euphratica. The 15NH4+ trace and root flux profiles showed that salt-stressed poplars retained ammonium uptake, which was related to the up-regulation of ammonium transporters (AMTs) in roots, as two of the four AMTs tested significantly increased in salt-stressed P. euphratica (i.e., AMT1.2, 2.1) and P. popularis (i.e., AMT1.1, 1.6). It should be noted that P. euphratica differs from salt-sensitive poplar in the maintenance of NO3− under salinity. 15NO3− tracing and root flux profiles showed that P. euphratica maintained nitrate uptake and transport, while the capacity to uptake NO3− was limited in salt-sensitive P. popularis. Salt increased the transcription of nitrate transporters (NRTs), NRT1.1, 1.2, 2.4, 3.1, in P. euphratica, while P. popularis showed a decrease in the transcripts of NRT1.1, 2.4, 3.1 after 7 days of salt stress. Furthermore, salt-stimulated transcription of plasmalemma H+-ATPases (HAs), HA2, HA4 and HA11 contributed to H+-pump activation and NO3− uptake in P. euphratica. However, salt stimulation of HAs was less pronounced in P. popularis, where a decrease in HA2 transcripts was observed in the stressed roots. We conclude that the salinity-decreased transcripts of NRTs and HAs reduced the ability to uptake NO3− in P. popularis, resulting in limited nitrogen supply. In comparison, P. euphratica maintains NH4+ and NO3− supply, mitigating the negative effects of salt stress.
研究领域:
植物学
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植物生理学
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Feng Zhang,Xiaodong Zhang,Pengyu Han,Jiali Cui,Chaoxu Wang,Qibin Chen
In this study, Pt@MOF(Fe)/NF, which was successfully employed as the cathode in the investigation of electrochemical activation of persulfate (PDS) for degradation of tetracycline hydrochloride (TCH), was successfully prepared by loading Fe-MOF and Pt on NF substrate using hydrothermal method. The loading of Fe-MOF and Pt increases the active site as well as the charge transfer ability, endowing the materials with high catalytic activity. The results revealed a synergistic reinforcing effect in the electrochemical activation of PDS, and the strong oxidizing substances generated by the activation of PDS on the cathode surface facilitated the degradation of TCH. The main active substances are SO 4 − . and OH . , primarily ·OH. The optimal degradation conditions include a current density of 20 mA/cm 2 , an initial concentration of PDS of 5 mmol/L, and an initial pH of 7. The degradation rate of TCH in the activation of PDS based on Pt@MOF(Fe)/NF reached 77.2 % after 120 mins of degradation under the optimal conditions, 32.7 % higher than that of the NF cathode system. In the degradation process of TCH, its characteristic functional groups are attacked and destroyed by active substances such as SO 4 − . and OH . , producing intermediates with structures similar to TCH, followed by further mineralization.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Shuwang Zhang,Luping Zhang,Jialing Zhao,Wenying Yuan,Xing Fang,Qianqian Yu,Jing Cheng,Xinhong Qiu
ABSTRACT In this study, the degradation of bisphenol A (BPA) was enhanced by adding the reducing agent hydroxylamine hydrochloride (HAHC) into the layered double hydroxides (LDH)/peroxymono- sulfate (PMS) system to promote the conversion of ferric iron (Fe(III)) to Fe(II). The results showed that the degradation efficiency exceeded 90% within 120 min after the addition of HAHC. The effects of initial BPA, PMS concentration, and LDH dosage on BPA degradation efficiency were also evaluated in the HAHC/LDH/PMS system. In addition, the catalyst showed high catalytic activity over a wide pH range (2~10) within the experiment. Radical scavenging tests confirmed that the main reactive oxygen species were sulfate radical (SO 4 •– ), hydroxyl radical ( • OH) and superoxide radical (O 2 •– ) in the HAHC/LDH/PMS process. The reaction mechanism was also inferred by using various analytical techniques, including X-ray photoelectron spectroscopy, X-ray diffraction, electron paramagnetic resonance, scanning electron microscopy, transmission electron microscopy, liquid chromatography–mass spectrometry. This work provides a new strategy for the degradation of organic pollutants by the addition of HAHC to promote the activation of PMS by catalysts.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Peilei Zhou,Kaijie Yang,Li Liu,Qianqian Liu,Naizhong Zhang,Jia Xu
Solar-driven interfacial evaporation presents significant potential for seawater desalination and wastewater purification. However, prolonged operation in marine environments often results in salt accumulation, which adversely impacts the performance and lifetime of system. Despite the progress in material design, achieving efficient evaporation while mitigating salt crystallization remains challenging in high-salinity water. In this study, we synthesized a hierarchically structured C 18 H 37 -MXene/PA/MS evaporator employing a simple yet effective methodology specifically designed for applications in high-salinity water environments. The evaporator features a dual-region configuration, with an upper hydrophobic light-absorbing layer comprising modified MXene and polyamide (PA) membranes and a hydrophilic lower layer consists of hydrophilic melamine sponge (MS). This innovative design, incorporating an ultra-thin polyamide interlayer, significantly enhances interfacial stability, thereby mitigating the interfacial separation typically observed in conventional Janus materials during prolonged usage. Furthermore, the meticulous control over the thickness of the hydrophobic layer (5.54 μm) ensures optimal thermal insulation properties of the material. Consequently, the C 18 H 37 -MXene/PA/MS evaporator demonstrates an impressive evaporation rate of 1.49 kg m −2 h −1 under 1 sun illumination, with a high energy efficiency of 92.8 %. Furthermore, the Janus architecture ensures steady performance in high salinity conditions, sustaining a high evaporation rate of 1.46 kg m −2 h −1 even in a 20 wt% NaCl solution. Furthermore, under natural sunlight, the daily freshwater yield reaches 8.91 kg m −2 . The exceptional evaporation efficiency and robust salt resistance highlight its strong potential for water desalination and wastewater treatment, contributing to the advancement of sustainable water resource management.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zixuan Liu,Junhui Li,Yongxu Liu,Qi Sun,Dengchao Liang,Xuan Yang,Wenwen Zhao,Yafang Zhang,Hong Liu,Jiebing Tang,Weijia Zhou,Guobin Xue
Saline soil remediating is crucial to enhance arable land and address the global food crisis. One of the great challenges is to develop low-cost and effective technology to directly extract salt from saline soil. Herein, we designed a biomimetic solar-driven salt extractor to extract the salt from saline soil with the fact that the salt will migrate along with water flow during evaporation process. A salt-resistant polyacrylic acid sodium hydrogel was used as the evaporator to ensure prolonged stable operation and salt was enriched in a cotton fabric beneath the evaporator. In one desalination cycle of 10 days under one solar irradiation, the soil salinity was reduced from 27 g kg −1 to 1.4 g kg −1 , thereby meeting the requirements for normal agricultural crops. Under outdoor conditions, similar salt extraction process could be reduced to 7 days with a desalination efficiency of 95.2 %, and the desalted soil could be used to plant ryegrass. We envisioned that such a high-efficiency solar-driven salt extraction strategy could have great potential application in saline land remediation.
研究领域:
环境科学
·
农学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 51
·76782-76792
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IF 5.19
Tian Tingting,Zhu Xinfeng,Song Zhongxian,Li Xindong,Zhang Wei,Mao Yanli,Chen Songtao,Wu Junfeng,Ouyang Guozi
In the existing research, most of the heterogeneous catalysts applied in the activation of persulfate to degrade organic pollutants were synthesized from chemical reagents in the laboratory. In this paper, we have obtained a spent iron ore (IO) residue directly collecting from the iron ore plants, and efficiently activating peroxydisulfate (PS) to produce reactive free radicals. The experimental results demonstrated that the IO could effectively activate PS to degrade tetracycline hydrochloride (TCH), with TCH removal rate reaching up to 85.6% within 2 h at room temperature. The TCH removal rate was increased with increasing iron ore dosage, while the more acidic pH condition would be favorable to TCH removal process. The material characterization results demonstrated that the dominant components of IO were Fe 3 O 4 and FeOOH. The transformation from Fe(II) to Fe(III) at the surface IO was observed after TCH degradation. What’s more, the quenching experiment and EPR detection results confirmed that the sulfate radical (SO 4 •− ) and hydroxyl radicals (•OH) would be acting as the main free radicals for TCH degradation. This study could not only explore a novel way to recycle the discarded iron ore, but also further expand its application in an effective activation of PS in an aqueous solution. Graphical abstract
研究领域:
环境科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fengbo Zhu,Ke Qian,Fukai Li,Jianhang Zhao,Peng Yan,Meng An,Qiang Zheng,Zi Liang Wu,Wenwen Yu
Recently, the development of hydrogel-based solar vapor generators (SVGs) has greatly promoted the applications of solar-driven interfacial desalination (SID) technology toward practical freshwater generation. Nevertheless, the hydrogel SVGs are facing risks of microbial contamination as well as retarded water generation performance in high-salinity brine. Herein, a charge engineering concept is proposed for developing SVG with concurrent strong salt rejection and antibacterial performance toward sustainable SID in high-salinity brine. The SVG is composed of polyhexamethylene guanidine hydrochloride (PHMG) groups grafted starch chains, and poly(vinyl alcohol) (PVA) networks with distributed coal powders as solar absorbents. The introduced positively charged PHMG aids in enhancing the Donnan effect in the hydrogel, accelerating liquid transport while minimizing the local salt concentrations, therefore the obtained SVG retains strong salt-rejection capabilities. Compared with bare starch constructed hydrogel composite, the hydrogel with engineered PHMG can spontaneously avoid salt accumulation and exhibit sustainable highly efficient solar desalination performance in nearly saturated saline (20 wt% NaCl) for over 2 weeks (with an average evaporation rate of 2.21 kg · m −2 · h −1 under one sun irradiation). Additionally, the intrinsic broad-spectrum antibacterial properties of the quaternary ammonium groups enable prominent inhibitory performance against typical Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). It is envisioned that the charge engineering strategy could promote the practical applications of SID technology toward sustainable and scalable freshwater production in high salinity brine.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
·
水处理
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 11
·4571-4579
·
IF 2.5
Lv Qian,Junfu Xiong,Xicheng Li,Bicheng Ji,Changzheng Wang
The strong driving force for carrier separation is a pivotal consideration in designing advanced environmental photocatalysts. In this study, bismuth vanadate (BiVO4) photocatalysts enriched with oxygen defects were synthesized via a one-step hydrothermal method, enabling precise control over the density of active sites and the concentration of localized electrons. Experimental results indicate that defective BiVO4 achieves a remarkable degradation efficiency of 86.3% for tetracycline hydrochloride under 90 minutes of visible-light irradiation. Furthermore, we found that the introduction of oxygen defects significantly increased the surface charge density of BiVO4, and the catalyst bulk phase induced a strong internal electric field by the oxygen defects, which was not the case for conventional BiVO4 samples. This work elucidates the vital role of oxygen defects in catalytic performance and offers valuable insights into developing in situ strategies for surface oxygen defect engineering.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2019
·
IF 2.291
Yucheng Hao,Linbo He,Guangjie Ge,Quanzheng Zhang,Ningjing Luo,Shuping Huang,Haijian Li,Evgeny V. Alekseev
Investigation of the Pt-B-O system reveals the first magnesium platinum borate Mg 3 Pt(BO 3 ) 2 O 2 obtained from the high temperature flux method. The compound crystallizes in the centrosymmetric monoclinic space group C 2/ m (no. 12) with the lattice parameters of a = 16.8073(8) Å, b = 3.10610(1) Å, c = 5.2107(2) Å, and β = 90.546(4)° (Z = 2). The crystal structure of Mg 3 Pt(BO 3 ) 2 O 2 is based upon isolated BO 3 triangles and PtO 6 and MgO 6 octahedra . The PtO 6 octahedra are connected with each other in an edge-sharing manner forming one dimensional (1D) chains. Each of the PtO 6 octahedra links with two BO 3 units to form anionic [Pt(BO 3 ) 2 O 2 ] 6- chains along the b -axis. MgO 6 octahedra are arranged in the form of two dimensional (2D) layers. The 2D MgO 6 layers are further connected by the anionic [Pt(BO 3 ) 2 O 2 ] 6- chains into the 3D framework structure of Mg 3 Pt(BO 3 ) 2 O 2 . The material was experimentally and theoretically characterized in regards to its optical and spectroscopic properties.
研究领域:
材料科学
·
晶体学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yiqun Chen,Baitian Zeng,Liying Long,Qing Shao,Zizheng Liu,Feng Wu,Pengchao Xie
The ultraviolet/persulfate (UV/PS) process has attracted more and more attention for water treatment. However, it runs the risk of producing bromate in the presence of bromide ions. In this work, we propose a new strategy using sulfite to inhibit bromate formation. The results show that the addition of sulfite significantly reduced the formed bromate in the UV/PS system by 61.2% and 24.5% in 30 min and 120 min, respectively. Increasing sulfite dosage or pH could enhance bromate control. From the standpoint of reaction kinetics, sulfite is likely to inhibit bromate formation by reducing bromine radicals (Br ) back to bromide ions, the energy profile of which was quantified by density functional theory (DFT) calculations. In the UV/PS/sulfite system, the conversion of SO 3 − to HO was observed, indicating that sulfite also served as a source of reactive radicals. Moreover, sulfite apparently promoted the degradation of benzoic acid and phenol in a UV/PS system, showing advantages over other inorganic reductants. As a result, we discovered that sulfite could not only help control bromate formation in UV/PS but also improve the system’s oxidation capacity.
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
Catalysts
·
2022
·Vol. 12
·期 11
·1345
·
IF 4.501
Tingting Tian,Xinfeng Zhu,Zhongxian Song,Xindong Li,Jinhui Zhang,Yanli Mao,Junfeng Wu,Wei Zhang,Chaohai Wang
Iron-based catalysts are widely used in water treatment and environmental remediation due to their abundant content in nature and their ability to activate persulfate at room temperature. Here, eggshell biochar-loaded natural iron slag (IO@ESBC) was successfully synthesized to remove tetracycline hydrochloride (TCH) by activated persulfate. The morphology, structure and chemical composition of IO@ESBC were systematically characterized. The IO@ESBC/PS process showed good performance for TCH removal. The decomposition rate constant (k) for IO@ESBC was 0.011 min−1and the degradation rate was 3690 mmol/g/h in this system. With the increase of PS concentration and IO@ESBC content, the removal rate of TCH both increased. The IO@ESBC/PS process can effectively remove TCH at pH 3–9. There are different effects on TCH removal for the reason that the addition of water matrix species (humic acid, Cl−, HCO3−, NO3−and HPO42−). The IO@ESBC/PS system for degrading TCH was mainly controlled by both the free radical pathway (SO4•−, •OH and O2•−) and non-free radical pathway (1O2). The loading of ESBC slows down the agglomeration between iron particles, and more active sites are exposed. The removal rate of TCH was still above 75% after five cycles of IO@ESBC. This interesting investigation has provided a green route for synthesis of composite driving from waste resources, expanding its further application for environmental remediations.Keywords:iron ore;eggshell biochar;tetracycline hydrochloride;persulfate-based advanced oxidation
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 12
·8383-8393
·
IF 3.9
Yan Wang,Jingyu Xiu,Tao Gan,Haiming Zou,Feiyue Li
In this work, a visible light-driven La/TiO2@g-C3N4 photocatalyst was synthesized for the photodegradation of tetracycline hydrochloride (TCH) in the presence of peroxydisulfate (PDS) in an internal loop-lift reactor. The surface morphology and structure of La/TiO2@g-C3N4 have been characterized by XRD, SEM-EDS, FTIR, XPS, and UV/vis DRS. La/TiO2@g-C3N4 displays outstanding photocatalytic performance and reusability. After four reuse cycles of the vis/La/TiO2@g-C3N4/PDS system, the TCH degradation rate and efficiency still reached 0.083 min−1 and 97.68%, respectively. Reactive species in this system included free radicals SO4˙−, ˙OH, and ˙O2−, as well as non-radicals e−, and h+, as established from the results of chemical quenching experiments. Moreover, a mechanism of action of the vis/La/TiO2@g-C3N4/PDS system for TCH degradation was proposed. The acute toxicity of the reaction solution towards Photobacterium phosphoreum T3 spp. in the vis/La/TiO2@g-C3N4/PDS process increased during the first 60 min and then decreased, illustrating that vis/La/TiO2@g-C3N4/PDS provided an effective and safe method for the removal of TCH.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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