Dongyi Guo
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View article: Contrasting Effects of Catecholate and Hydroxamate Siderophores on Molybdenite Dissolution
Contrasting Effects of Catecholate and Hydroxamate Siderophores on Molybdenite Dissolution Open
Molybdenum (Mo) is essential for many enzymes but is often sequestered within minerals, rendering it not readily bioavailable. Metallophores, metabolites secreted by microorganisms and plants, promote mineral dissolution to increase the me…
View article: Differential degradation of petroleum hydrocarbons by Shewanella putrefaciens under aerobic and anaerobic conditions
Differential degradation of petroleum hydrocarbons by Shewanella putrefaciens under aerobic and anaerobic conditions Open
The complexity of crude oil composition, combined with the fluctuating oxygen level in contaminated environments, poses challenges for the bioremediation of oil pollutants, because of compound-specific microbial degradation of petroleum hy…
View article: Inhibition of Extracellular Enzyme Activity by Reactive Oxygen Species upon Oxygenation of Reduced Iron-Bearing Minerals
Inhibition of Extracellular Enzyme Activity by Reactive Oxygen Species upon Oxygenation of Reduced Iron-Bearing Minerals Open
The dual roles of minerals in inhibiting and prolonging extracellular enzyme activity in soils and sediments are governed by enzyme adsorption to mineral surfaces. Oxygenation of mineral-bound Fe(II) generates reactive oxygen species (ROS)…
View article: A critical review of mineral–microbe interaction and co-evolution: mechanisms and applications
A critical review of mineral–microbe interaction and co-evolution: mechanisms and applications Open
Mineral–microbe interactions play important roles in environmental change, biogeochemical cycling of elements and formation of ore deposits. Minerals provide both beneficial (physical and chemical protection, nutrients, and energy) and det…
View article: Synthesis and Characterization of Corn Stover-Based Cellulose Triacetate Catalyzed by Ionic Liquid Phosphotungstate
Synthesis and Characterization of Corn Stover-Based Cellulose Triacetate Catalyzed by Ionic Liquid Phosphotungstate Open
Cellulose triacetate (CTA) was successfully synthesized from corn stover cellulose (CSC) in the presence of [PyPS]3PW12O40 (IL-POM). The effects of IL-POM contents, reaction temperature, and reaction time on the yield and degree of substit…
View article: Minerals Determined a Special Ecological Niche and Selectively Enriched Microbial Species from Bulk Water Communities in Hot Springs
Minerals Determined a Special Ecological Niche and Selectively Enriched Microbial Species from Bulk Water Communities in Hot Springs Open
Minerals provide physical niches and supply nutrients or serve as electron donors/acceptors for microorganism survival and growth, and thus minerals and microbes co-evolved. Yet, little is known about how sediment minerals impact microbial…
View article: Nylon membranes modified by gold nanoparticles as surface-enhanced Raman spectroscopy substrates for several pesticides detection
Nylon membranes modified by gold nanoparticles as surface-enhanced Raman spectroscopy substrates for several pesticides detection Open
Nylon membranes modified by gold nanoparticles as substrates showed preferable test reproducibility and appropriate sensitivity. This process provided a low-cost and reliable SERS testing strategy for qualitative and quantitative analysis.
View article: Mechanismsof Enhanced Antibacterial Activity by ReducedChitosan-Intercalated Nontronite
Mechanismsof Enhanced Antibacterial Activity by ReducedChitosan-Intercalated Nontronite Open
Previous studies have documented
the antibacterial activity of
certain iron-containing clays. However, the repulsion between negatively
charged bacteria and the clay surface makes this process inefficient.
The objective of this study is to…
View article: Mechanisms of Enhanced Antibacterial Activity by Reduced Chitosan-Intercalated Nontronite
Mechanisms of Enhanced Antibacterial Activity by Reduced Chitosan-Intercalated Nontronite Open
Previous studies have documented the antibacterial activity of certain iron-containing clays. However, the repulsion between negatively charged bacteria and the clay surface makes this process inefficient. The objective of this study is to…