Unveiling selective nitrate reduction to ammonia with Co3O4 nanosheets/TiO2 nanobelt heterostructure catalyst

Article Chemistry, Physical

Boosting electrochemical nitrate-to-ammonia conversion by self- supported MnCo2O4 nanowire array

Jun Li et al.

Summary: In this study, a self-supported spinel-type MnCo2O4 nanowire array was demonstrated to efficiently catalyze the conversion of NO3- to NH3 under ambient conditions, achieving excellent electrocatalytic performance.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

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Article Chemistry, Physical

In situ grown Fe3O4 particle on stainless steel: A highly efficient electrocatalyst for nitrate reduction to ammonia

Xiaoya Fan et al.

Summary: This work presents Fe3O4/SS as an efficient electrocatalyst for NO3- reduction to NH3, achieving high Faradaic efficiency and NH3 yield in NaNO3 and NaOH solution, with robust structural and electrochemical stability. The study provides valuable insights for expanding the application of metallic oxide electrocatalysts in NH3 synthesis, supported by theoretical calculations uncovering the catalytic mechanism.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Sulfur-deficient Bi2S3-x synergistically coupling Ti3C2Tx-MXene for boosting electrocatalytic N2 reduction

Yaojing Luo et al.

Summary: In this study, an efficient NRR catalyst was designed using defect and interface engineering. The catalyst exhibited enhanced NRR activity, surpassing other reported catalysts. Theoretical investigations revealed the synergistic effect of the catalyst's dual-active-center system in the NRR process.

NANO RESEARCH (2022)

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Article Chemistry, Physical

Highly efficient two-electron electroreduction of oxygen into hydrogen peroxide over Cu-doped TiO2

Zhiqin Deng et al.

Summary: In this study, Cu-doped TiO2 was reported as an efficient electrocatalyst for sustainable electrochemical synthesis of hydrogen peroxide. The Cu doping induced lattice distortion and the formation of oxygen vacancies and Ti3+ species, leading to improved selectivity and yield of hydrogen peroxide. Theoretical calculations revealed that Cu doping not only enhanced the electrical conductivity of TiO2, but also facilitated the oxygen reduction reaction process.

NANO RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Ambient Ammonia Synthesis via Electrochemical Reduction of Nitrate Enabled by NiCo2O4 Nanowire Array

Qian Liu et al.

Summary: NiCo2O4 nanowire array on carbon cloth (NiCo2O4/CC) is proposed as a highly active electrocatalyst for ambient nitrate (NO3-) reduction to ammonia (NH3). It achieves a high Faradic efficiency of 99.0% and a large NH3 yield up to 973.2 mu mol h(-1) cm(-2). The superior catalytic activity comes from its half-metal feature and optimized adsorption energy due to the existence of Ni in the crystal structure.

SMALL (2022)

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Article Chemistry, Physical

Unveiling the Synergy of O-Vacancy and Heterostructure over MoO3-x/MXene for N2 Electroreduction to NH3

Ke Chu et al.

Summary: In this study, vacancy and heterostructure engineering were integrated to develop O-vacancy-rich MoO3-x anchored on Ti3C2Tx-MXene as a highly active and selective NRR electrocatalyst. Experimental results demonstrated exceptional NRR activity, increased NH3 yield, and Faradaic efficiency for the catalyst.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Inorganic & Nuclear

Ambient electrochemical N2-to-NH3 conversion catalyzed by TiO2 decorated juncus effusus-derived carbon microtubes

Haijun Chen et al.

Summary: In this study, a hybrid catalyst of TiO2 and juncus effusus-derived carbon microtubes with a three-dimensional cross-linked hollow tubular structure is proposed for efficient electrocatalytic conversion of N-2 to NH3 at ambient conditions. The catalyst shows a high NH3 yield and faradaic efficiency in 0.1M Na2SO4, along with superior electrochemical and structural stability.

INORGANIC CHEMISTRY FRONTIERS (2022)

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Article Chemistry, Multidisciplinary

High-Efficiency N2 Electroreduction Enabled by Se-Vacancy-Rich WSe2-x in Water-in-Salt Electrolytes

Peng Shen et al.

Summary: Combining catalyst and electrolyte engineering, a high-efficiency electrocatalytic nitrogen reduction reaction (NRR) is achieved using a Se-vacancy-rich WSe2-x catalyst in water-in-salt electrolyte (WISE), which suppresses H2 evolution, improves N2 affinity, and enhances active site pi-back-donation ability for promoting both activity and selectivity of NRR. The WSe2-x in 12m LiClO4 exhibits excellent faradaic efficiency and NH3 yield, among the highest reported to date.

ACS NANO (2022)

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Article Chemistry, Physical

Iron-doped cobalt oxide nanoarray for efficient electrocatalytic nitrate-to-ammonia conversion

Peipei Wei et al.

Summary: In this study, Fe-doped Co3O4 nanoarray is reported to efficiently catalyze NO3RR for NH3 production in neutral conditions, achieving high yield and Faradaic efficiency.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Nanoscience & Nanotechnology

Boosting Hydrogen Evolution Electrocatalysis via Regulating the Electronic Structure in a Crystalline-Amorphous CoP/CeOX p-n Heterojunction

Xue-Zhi Song et al.

Summary: This study successfully combines catalytically inactive CeOx with active CoP to form a CoP/CeOx heterojunction, achieving modulation of the electronic structure of active CoP. The CoP/CeOx heterojunction optimizes water dissociation and H adsorption, significantly improving the catalytic activity and kinetics of the hydrogen evolution reaction.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Chemistry, Physical

Enhanced N2-to-NH3 conversion efficiency on Cu3P nanoribbon electrocatalyst

Qian Liu et al.

Summary: Cu3P nanoribbon is proposed as a highly efficient electrocatalyst for the conversion of nitrogen to ammonia. It shows excellent catalytic performance and stability under benign conditions and achieves high Faradaic efficiency and large yield.

NANO RESEARCH (2022)

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Article Nanoscience & Nanotechnology

High-Efficiency Electrochemical Nitrate Reduction to Ammonia on a Co3O4 Nanoarray Catalyst with Cobalt Vacancies

Zhiqin Deng et al.

Summary: This study demonstrates that Co3O4 nanosheet array with cobalt vacancies can enhance the efficiency of nitrate reduction reaction and achieve carbon-free ammonia synthesis with high yield.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Engineering, Environmental

Efficient electrocatalytic nitrate reduction via boosting oxygen vacancies of TiO2 nanotube array by highly dispersed trace Cu doping

Qinan Song et al.

Summary: This study proposes a strategy for efficient nitrate removal through the activation of oxygen vacancies on a highly dispersed Cu-doped TiO(2 )nanotube array (Cu/ TNTA) cathode via electrodeposition. The results show that trace Cu doping promotes efficient charge transfer between nitrate and the electrode, leading to enhanced nitrate removal rate and stability.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Construction of CoP/TiO2 nanoarray for enhanced electrochemical nitrate reduction to ammonia

Z. Deng et al.

Summary: The NO3RR activity of CoP is effectively enhanced by constructing a p-n heterojunction of CoP/TiO2 nanoarray on a titanium plate. This heterojunction establishes an electric field, accelerating electron transport and leading to an excellent Faradaic efficiency of 95.0% and a high NH3 yield of 499.8 μmol/h/cm2.

MATERIALS TODAY PHYSICS (2022)

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Article Nanoscience & Nanotechnology

Ambient Electroreduction of Nitrite to Ammonia over Ni Nanoparticle Supported on Molasses-Derived Carbon Sheets

Xun He et al.

Summary: In this study, Ni nanoparticles supported on molasses-derived carbon sheets were reported as an electrocatalyst for the reduction of NO2- to NH3. The electrocatalyst exhibited high NH3 yield and remarkable electrochemical stability in alkaline solutions.

ACS APPLIED NANO MATERIALS (2022)

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Article Chemistry, Inorganic & Nuclear

Plasma-etched Ti2O3 with oxygen vacancies for enhanced NH3 electrosynthesis and Zn-N2 batteries

Hai-jun Chen et al.

Summary: In this study, a novel electrocatalyst, OV-Ti2O3, was reported for sustainable NH3 production. OV-Ti2O3 exhibited outstanding N-2 fixation performance in experiments and showed excellent performance in the assembled Zn-N-2 battery.

INORGANIC CHEMISTRY FRONTIERS (2022)

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Article Chemistry, Inorganic & Nuclear

A vacancy engineered MnO2-x electrocatalyst promotes nitrate electroreduction to ammonia

Guohui Wang et al.

Summary: This study attempted to construct O-vacancies on MnO2 nanosheets, resulting in OV-rich MnO2-x catalysts that exhibited high NH3 yield, excellent FE, and outstanding stability in the NO3RR reaction.

DALTON TRANSACTIONS (2022)

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Article Chemistry, Multidisciplinary

CoO nanoparticle decorated N-doped carbon nanotubes: a high-efficiency catalyst for nitrate reduction to ammonia

Qiru Chen et al.

Summary: This study reports an efficient catalyst, CoO nanoparticle decorated N-doped carbon nanotubes, for the selective hydrogenation of NO3- to NH3, achieving high NH3 yield and faradaic efficiency.

CHEMICAL COMMUNICATIONS (2022)

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Review Chemistry, Multidisciplinary

Electrocatalytic reduction of nitrate - a step towards a sustainable nitrogen cycle

Hui Xu et al.

Summary: Nitrate enrichment poses negative effects on the environment and human health. Traditional techniques for reducing nitrate levels in water bodies have limitations. Electrocatalytic nitrate reduction is a promising method due to its low cost, high efficiency, and environmental friendliness. This article provides a comprehensive account of the principles, methods, challenges, and opportunities in electrocatalytic nitrate reduction.

CHEMICAL SOCIETY REVIEWS (2022)

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Review Engineering, Environmental

Recent advances in non-noble metal electrocatalysts for nitrate reduction

Xi Zhang et al.

Summary: This review highlights the latest research progress in non-noble metal materials for electrochemical nitrate reduction, discussing mechanistic insights and strategies for improving performance.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Electrocatalytic Reduction of Nitrate to Ammonia on Low-Cost Ultrathin CoOx Nanosheets

Jing Wang et al.

Summary: The electrochemical nitrate reduction reaction (NITRR) is an attractive method for ammonia synthesis. By designing ultrathin CoOx nanosheets with abundant surface oxygen as catalysts, the efficiency of NITRR can be increased, hydrogen evolution reaction can be suppressed, and the yield of ammonia can be enhanced.

ACS CATALYSIS (2021)

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Article Chemistry, Physical

Electrochemical nitrogen fixation via bimetallic Sn-Ti sites on defective titanium oxide catalysts

Na Cao et al.

Summary: The study demonstrated the successful development of a bi-metallic Sn-Ti structure in TiO2 for efficient electrocatalytic N-2 fixation, highlighting the potential of atomic-scale designing and constructing bimetallic active sites.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

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Article Engineering, Environmental

Selective adsorption and enhanced photodegradation of diclofenac in water by molecularly imprinted TiO2

Lanbo Bi et al.

Summary: The molecularly imprinted TiO2 prepared in the study demonstrated superior adsorption capacity, selectivity, and photodegradation performance for diclofenac compared to non-imprinted TiO2, making it a valuable tool for efficient removal of persistent toxic pollutants in water treatment and environmental restoration.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Pd doping-weakened intermediate adsorption to promote electrocatalytic nitrate reduction on TiO2 nanoarrays for ammonia production and energy supply with zinc-nitrate batteries

Ying Guo et al.

Summary: This study presents a highly efficient Pd-doped TiO2 nanoarray electrode for ammonia production through nitrate electroreduction, achieving high yields and selectivity. By introducing Pd, the adsorption abilities of intermediates were weakened, leading to record-high NH3 yield, NH3 FE, and nitrate conversion.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Nitrate electroreduction: mechanism insight, in situ characterization, performance evaluation, and challenges

Yuting Wang et al.

Summary: Excessive nitrate ions in the environment pose a significant threat to human health by disrupting the natural nitrogen cycle. Nitrate electroreduction, utilizing green electrons as reductants, shows promise due to its ability to operate under ambient conditions. Understanding the nitrate reaction mechanism is crucial for designing efficient electrocatalysts for selective nitrate reduction.

CHEMICAL SOCIETY REVIEWS (2021)

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Article Chemistry, Multidisciplinary