Search Results - "Zhu, Mengqiang"

X‑ray Absorption Spectroscopic Quantification and Speciation Modeling of Sulfate Adsorption on Ferrihydrite Surfaces by Gu, Chunhao, Wang, Zimeng, Kubicki, James D, Wang, Xiaoming, Zhu, Mengqiang

“…Sulfate adsorption on mineral surfaces is an important environmental chemical process, but the structures and respective contribution of different adsorption…”
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Coupled Kinetics of Ferrihydrite Transformation and As(V) Sequestration under the Effect of Humic Acids: A Mechanistic and Quantitative Study by Hu, Shiwen, Lu, Yang, Peng, Lanfang, Wang, Pei, Zhu, Mengqiang, Dohnalkova, Alice C, Chen, Hong, Lin, Zhang, Dang, Zhi, Shi, Zhenqing

“…In natural environments, kinetics of As­(V) sequestration/release is usually coupled with dynamic Fe mineral transformation, which is further influenced by the…”
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Quantifying Uncertainties in Sequential Chemical Extraction of Soil Phosphorus Using XANES Spectroscopy by Gu, Chunhao, Dam, Than, Hart, Stephen C, Turner, Benjamin L, Chadwick, Oliver A, Berhe, Asmeret Asefaw, Hu, Yongfeng, Zhu, Mengqiang

“…Sequential chemical extraction has been widely used to study soil phosphorus (P) dynamics and inform nutrient management, but its efficacy for assigning P into…”
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Redox Reactions between Mn(II) and Hexagonal Birnessite Change Its Layer Symmetry by Zhao, Huaiyan, Zhu, Mengqiang, Li, Wei, Elzinga, Evert J, Villalobos, Mario, Liu, Fan, Zhang, Jing, Feng, Xionghan, Sparks, Donald L

“…Birnessite, a phyllomanganate and the most common type of Mn oxide, affects the fate and transport of numerous contaminants and nutrients in nature. Birnessite…”
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Impacts of Ionic Strength on Three-Dimensional Nanoparticle Aggregate Structure and Consequences for Environmental Transport and Deposition by Legg, Benjamin A, Zhu, Mengqiang, Comolli, Luis R, Gilbert, Benjamin, Banfield, Jillian F

“…The transport of nanoparticles through aqueous systems is a complex process with important environmental policy ramifications. Ferrihydrite nanoparticles…”
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Cd(II) retention and remobilization on δ-MnO2 and Mn(III)-rich δ-MnO2 affected by Mn(II) by Sun, Qian, Cui, Pei-Xin, Zhu, Mengqiang, Fan, Ting-Ting, Ata-Ul-Karim, Syed Tahir, Gu, Jia-Hui, Wu, Song, Zhou, Dong-Mei, Wang, Yu-Jun

“…Birnessite owing to its negative surface charge and defective structure exhibits high sorption affinities for Cd(II). However, Mn(II) can not only compete for…”
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Formation of Cd precipitates on γ-Al2O3: Implications for Cd sequestration in the environment by Sun, Qian, Liu, Cun, Cui, Peixin, Fan, Tingting, Zhu, Mengqiang, Alves, Marcelo Eduardo, Siebecker, Matthew G., Sparks, Donald L., Wu, Tongliang, Li, Wei, Zhou, Dongmei, Wang, Yujun

“…Apart from surface complexation, precipitation of minerals also plays an important role in reducing the mobility and transport of heavy metals in the…”
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Precipitation pathways for ferrihydrite formation in acidic solutions by Zhu, Mengqiang, Frandsen, Cathrine, Wallace, Adam F., Legg, Benjamin, Khalid, Syed, Zhang, Hengzhong, Mørup, Steen, Banfield, Jillian F., Waychunas, Glenn A.

“…Iron oxides and oxyhydroxides form via Fe3+ hydrolysis and polymerization in many aqueous environments, but the pathway from Fe3+ monomers to oligomers and…”
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Arsenite Oxidation by a Poorly Crystalline Manganese-Oxide. 2. Results from X-ray Absorption Spectroscopy and X-ray Diffraction by Lafferty, Brandon J, Ginder-Vogel, Matthew, Zhu, Mengqiang, Livi, Kenneth J. T, Sparks, Donald L

“…Arsenite (AsIII) oxidation by manganese oxides (Mn-oxides) serves to detoxify and, under many conditions, immobilize arsenic (As) by forming arsenate (AsV)…”
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Quantum Chemical Study of Arsenic (III, V) Adsorption on Mn-Oxides: Implications for Arsenic(III) Oxidation by Zhu, Mengqiang, Paul, Kristian W, Kubicki, James D, Sparks, Donald L

“…Density functional theory (DFT) calculations were used to investigate As(V) and As(III) surface complex structures and reaction energies on both Mn(III) and…”
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Frontiers and advances in environmental soil chemistry: a special issue in honor of Prof. Donald L. Sparks by Jun, Young-Shin, Zhu, Mengqiang, Peak, Derek

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Synthesis of Birnessite in the Presence of Phosphate, Silicate, or Sulfate by Wang, Qian, Liao, Xianya, Xu, Wenqian, Ren, Yang, Livi, Kenneth J., Zhu, Mengqiang

“…Layered manganese (Mn) oxides, such as birnessite, are versatile materials in industrial applications and common minerals mediating elemental cycling in…”
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Effect of Zn coprecipitation on the structure of layered Mn oxides by Zhao, Shiliang, Wang, Qian, Sun, Jingying, Borkiewicz, Olaf J., Huang, Rixiang, Saad, Emily M., Fields, Benjamin, Chen, Shuo, Zhu, Mengqiang, Tang, Yuanzhi

“…Mn oxides (MnOx) are a group of ubiquitous metal oxides in the environment and can significantly affect the biogeochemical cycles of metals, nutrients, and…”
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Cation Effects on the Layer Structure of Biogenic Mn-Oxides by Zhu, Mengqiang, Ginder-Vogel, Matthew, Parikh, Sanjai J, Feng, Xiong-Han, Sparks, Donald L

“…Biologically catalyzed Mn(II) oxidation produces biogenic Mn-oxides (BioMnO x ) and may serve as one of the major formation pathways for layered Mn-oxides in…”
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Ni(II) Sorption on Biogenic Mn-Oxides with Varying Mn Octahedral Layer Structure by Zhu, Mengqiang, Ginder-Vogel, Matthew, Sparks, Donald L

“…Biogenic Mn-oxides (BioMnO x ), produced by microorganisms, possess an extraordinary ability to sequester metals. BioMnO x are generally layered structures…”
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Quantification of Coexisting Inner- and Outer-Sphere Complexation of Sulfate on Hematite Surfaces by Wang, Xiaoming, Wang, Zimeng, Peak, Derek, Tang, Yadong, Feng, Xionghan, Zhu, Mengqiang

“…Sulfate adsorption on hematite surfaces controls sulfate mobility and environmental behavior but whether sulfate forms both inner- and outer-sphere complexes…”
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Early Stage Formation of Iron Oxyhydroxides during Neutralization of Simulated Acid Mine Drainage Solutions by Zhu, Mengqiang, Legg, Benjamin, Zhang, Hengzhong, Gilbert, Benjamin, Ren, Yang, Banfield, Jillian F, Waychunas, Glenn A

“…The phases and stability of ferric iron products formed early during neutralization of acid mine drainage waters remain largely unknown. In this work, we used…”
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Formation of nano-crystalline todorokite from biogenic Mn oxides by Feng, Xiong Han, Zhu, Mengqiang, Ginder-Vogel, Matthew, Ni, Chaoying, Parikh, Sanjai J., Sparks, Donald L.

“…Todorokite, as one of three main Mn oxide phases present in oceanic Mn nodules and an active MnO 6 octahedral molecular sieve (OMS), has garnered much…”
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Structure and properties of vanadium(V)-doped hexagonal turbostratic birnessite and its enhanced scavenging of Pb2+ from solutions by Yin, Hui, Feng, Xionghan, Tan, Wenfeng, Koopal, Luuk K., Hu, Tiandou, Zhu, Mengqiang, Liu, Fan

“…[Display omitted] •V was coprecipitated with birnessite at a series of V/Mn molar ratios.•V-doped birnessites have greatly reduced particle sizes and increased…”
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Phosphate Sorption Speciation and Precipitation Mechanisms on Amorphous Aluminum Hydroxide by Wang, Xiaoming, Phillips, Brian, Boily, Jean-François, Hu, Yongfeng, Hu, Zhen, Yang, Peng, Feng, Xionghan, Xu, Wenqian, Zhu, Mengqiang

“…Aluminum (Al) oxides are important adsorbents for phosphate in soils and sediments, and significantly limit Phosphate (P) mobility and bioavailability, but the…”
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